/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_4-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:45:01,694 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:45:01,699 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:45:01,747 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:45:01,747 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:45:01,758 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:45:01,763 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:45:01,765 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:45:01,766 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:45:01,767 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:45:01,772 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:45:01,773 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:45:01,773 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:45:01,774 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:45:01,775 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:45:01,777 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:45:01,778 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:45:01,779 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:45:01,780 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:45:01,782 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:45:01,784 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:45:01,785 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:45:01,786 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:45:01,787 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:45:01,789 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:45:01,790 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:45:01,790 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:45:01,791 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:45:01,791 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:45:01,792 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:45:01,793 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:45:01,794 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:45:01,794 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:45:01,795 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:45:01,796 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:45:01,797 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:45:01,797 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:45:01,798 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:45:01,798 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:45:01,799 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:45:01,800 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:45:01,800 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 07:45:01,829 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:45:01,830 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:45:01,831 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:45:01,831 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:45:01,831 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:45:01,832 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:45:01,832 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:45:01,832 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:45:01,832 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:45:01,833 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:45:01,833 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:45:01,833 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:45:01,833 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:45:01,833 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:45:01,834 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:45:01,834 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:45:01,834 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:45:01,834 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:45:01,834 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:45:01,835 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:45:01,835 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:45:01,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:45:01,835 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:45:01,836 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:45:01,836 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:45:01,836 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:45:01,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:45:01,836 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:45:01,837 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:45:01,837 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:45:02,240 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:45:02,267 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:45:02,272 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:45:02,274 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:45:02,275 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:45:02,276 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_4-1.c [2020-09-25 07:45:02,375 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4a8a63f59/0b55016199eb439b939e0f5215260be8/FLAGc4cbc183a [2020-09-25 07:45:02,918 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:45:02,919 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_4-1.c [2020-09-25 07:45:02,929 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4a8a63f59/0b55016199eb439b939e0f5215260be8/FLAGc4cbc183a [2020-09-25 07:45:03,256 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4a8a63f59/0b55016199eb439b939e0f5215260be8 [2020-09-25 07:45:03,269 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:45:03,273 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:45:03,274 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:45:03,274 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:45:03,279 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:45:03,280 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:45:03" (1/1) ... [2020-09-25 07:45:03,284 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26f88baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:45:03, skipping insertion in model container [2020-09-25 07:45:03,284 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:45:03" (1/1) ... [2020-09-25 07:45:03,295 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:45:03,324 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:45:03,528 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:45:03,534 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:45:03,556 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:45:03,574 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:45:03,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:45:03 WrapperNode [2020-09-25 07:45:03,575 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:45:03,576 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:45:03,576 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:45:03,576 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:45:03,594 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:45:03" (1/1) ... [2020-09-25 07:45:03,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:45:03" (1/1) ... [2020-09-25 07:45:03,600 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:45:03" (1/1) ... [2020-09-25 07:45:03,600 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:45:03" (1/1) ... [2020-09-25 07:45:03,682 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:45:03" (1/1) ... [2020-09-25 07:45:03,685 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:45:03" (1/1) ... [2020-09-25 07:45:03,686 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:45:03" (1/1) ... [2020-09-25 07:45:03,688 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:45:03,688 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:45:03,688 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:45:03,689 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:45:03,690 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:45:03" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:45:03,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:45:03,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:45:03,768 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 07:45:03,768 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 07:45:03,768 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:45:03,769 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:45:03,769 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:45:03,769 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 07:45:03,769 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 07:45:03,769 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:45:03,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:45:03,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:45:04,011 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:45:04,012 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 07:45:04,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:45:04 BoogieIcfgContainer [2020-09-25 07:45:04,019 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:45:04,033 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:45:04,033 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:45:04,037 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:45:04,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:45:03" (1/3) ... [2020-09-25 07:45:04,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c96f36e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:45:04, skipping insertion in model container [2020-09-25 07:45:04,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:45:03" (2/3) ... [2020-09-25 07:45:04,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c96f36e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:45:04, skipping insertion in model container [2020-09-25 07:45:04,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:45:04" (3/3) ... [2020-09-25 07:45:04,054 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_4-1.c [2020-09-25 07:45:04,072 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:45:04,081 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:45:04,111 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:45:04,151 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:45:04,151 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:45:04,151 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:45:04,151 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:45:04,151 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:45:04,151 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:45:04,152 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:45:04,152 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:45:04,172 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 07:45:04,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 07:45:04,180 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:45:04,181 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:45:04,182 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:45:04,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:45:04,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 07:45:04,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:45:04,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1932208191] [2020-09-25 07:45:04,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:45:04,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:04,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:04,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:04,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:45:04,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:04,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 07:45:04,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:04,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:04,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:45:04,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:45:04,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 07:45:04,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 07:45:04,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:45:04,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:04,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:04,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:04,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:45:04,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:04,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:45:04,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:04,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:04,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:45:04,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:04,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:45:04,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:04,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 07:45:04,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:04,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:04,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:04,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:45:04,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:04,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 07:45:04,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:04,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:04,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:45:04,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:45:04,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:45:04,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:04,543 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 07:45:04,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1932208191] [2020-09-25 07:45:04,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:45:04,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 07:45:04,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136260031] [2020-09-25 07:45:04,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:45:04,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:45:04,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:45:04,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:45:04,570 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 07:45:04,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:45:04,708 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 07:45:04,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:45:04,710 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 07:45:04,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:45:04,724 INFO L225 Difference]: With dead ends: 58 [2020-09-25 07:45:04,725 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 07:45:04,729 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:45:04,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 07:45:04,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 07:45:04,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 07:45:04,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 07:45:04,789 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 07:45:04,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:45:04,790 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 07:45:04,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:45:04,790 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 07:45:04,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 07:45:04,792 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:45:04,792 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:45:04,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:45:04,793 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:45:04,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:45:04,793 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 07:45:04,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:45:04,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905521492] [2020-09-25 07:45:04,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:45:04,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:04,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:04,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:04,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 07:45:04,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:04,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 07:45:04,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:04,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:04,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:45:04,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:45:04,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:45:04,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:04,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:45:04,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:04,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:04,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:04,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:45:04,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:04,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:45:04,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:04,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:04,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:45:04,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:04,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:45:04,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:04,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 07:45:04,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:04,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:04,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:04,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:45:04,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:04,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 07:45:04,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:04,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:04,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:45:04,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:45:04,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:45:04,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:04,981 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 07:45:04,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905521492] [2020-09-25 07:45:04,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:45:04,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 07:45:04,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539859680] [2020-09-25 07:45:04,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:45:04,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:45:04,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:45:04,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:45:04,986 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 07:45:05,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:45:05,062 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 07:45:05,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:45:05,063 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 07:45:05,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:45:05,065 INFO L225 Difference]: With dead ends: 50 [2020-09-25 07:45:05,065 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 07:45:05,066 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:45:05,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 07:45:05,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 07:45:05,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 07:45:05,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 07:45:05,076 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 07:45:05,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:45:05,077 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 07:45:05,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:45:05,077 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 07:45:05,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 07:45:05,079 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:45:05,079 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 07:45:05,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:45:05,080 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:45:05,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:45:05,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 07:45:05,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:45:05,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [89647888] [2020-09-25 07:45:05,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:45:05,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:05,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:05,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:05,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:05,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:05,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 07:45:05,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:45:05,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 579 [2020-09-25 07:45:05,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:05,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:05,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:45:05,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:45:05,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 07:45:05,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:45:05,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:45:05,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:05,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:05,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:05,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:45:05,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:05,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:45:05,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:05,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:05,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:45:05,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:05,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:45:05,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:05,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 07:45:05,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:05,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:05,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:05,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:05,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:05,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 07:45:05,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:45:05,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-09-25 07:45:05,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:05,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:05,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:45:05,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:45:05,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 07:45:05,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:05,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:45:05,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:05,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:05,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:05,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:45:05,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:05,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 07:45:05,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:05,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:05,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:45:05,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:05,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:45:05,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:05,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 07:45:05,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:05,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:05,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:05,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:45:05,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:05,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 07:45:05,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:05,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:05,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:45:05,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:05,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:45:05,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:06,020 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:45:06,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [89647888] [2020-09-25 07:45:06,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:45:06,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:45:06,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967274364] [2020-09-25 07:45:06,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:45:06,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:45:06,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:45:06,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:45:06,023 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-09-25 07:45:06,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:45:06,157 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-09-25 07:45:06,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 07:45:06,158 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 07:45:06,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:45:06,160 INFO L225 Difference]: With dead ends: 58 [2020-09-25 07:45:06,161 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 07:45:06,161 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:45:06,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 07:45:06,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-25 07:45:06,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 07:45:06,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 07:45:06,174 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 07:45:06,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:45:06,175 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 07:45:06,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:45:06,175 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 07:45:06,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 07:45:06,177 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:45:06,178 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 07:45:06,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:45:06,178 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:45:06,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:45:06,179 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 07:45:06,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:45:06,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359290847] [2020-09-25 07:45:06,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:45:06,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:06,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:06,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:06,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:06,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:06,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:06,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 07:45:06,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:45:06,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 576 [2020-09-25 07:45:06,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:06,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:06,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:45:06,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:45:06,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 07:45:06,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:06,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:45:06,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:06,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:06,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:06,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:45:06,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:06,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:45:06,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:06,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:06,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:45:06,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:06,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:45:06,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:06,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 07:45:06,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:06,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:06,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:06,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:06,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:07,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:07,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 07:45:07,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:45:07,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 419 [2020-09-25 07:45:07,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:07,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:07,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:45:07,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:45:07,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 07:45:07,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:07,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:45:07,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:07,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:07,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:07,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:45:07,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:07,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 07:45:07,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:07,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:07,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:45:07,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:07,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:45:07,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:07,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 07:45:07,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:07,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:07,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:07,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:45:07,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:07,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:45:07,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:07,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:07,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:45:07,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:07,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:45:07,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:07,330 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:45:07,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [359290847] [2020-09-25 07:45:07,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:45:07,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:45:07,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571501301] [2020-09-25 07:45:07,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:45:07,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:45:07,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:45:07,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:45:07,332 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 7 states. [2020-09-25 07:45:07,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:45:07,494 INFO L93 Difference]: Finished difference Result 110 states and 146 transitions. [2020-09-25 07:45:07,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 07:45:07,494 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 07:45:07,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:45:07,497 INFO L225 Difference]: With dead ends: 110 [2020-09-25 07:45:07,497 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 07:45:07,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:45:07,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 07:45:07,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-09-25 07:45:07,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 07:45:07,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2020-09-25 07:45:07,512 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 35 [2020-09-25 07:45:07,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:45:07,512 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2020-09-25 07:45:07,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:45:07,512 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2020-09-25 07:45:07,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 07:45:07,516 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:45:07,516 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-09-25 07:45:07,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:45:07,516 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:45:07,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:45:07,517 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 1 times [2020-09-25 07:45:07,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:45:07,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143814768] [2020-09-25 07:45:07,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:45:07,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:07,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:07,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:07,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:07,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:07,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:07,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:07,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:12,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:12,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 07:45:12,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:45:12,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 07:45:12,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:12,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:12,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:45:12,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:45:12,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 07:45:12,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:45:12,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:45:12,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:12,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:12,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:12,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:45:12,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:12,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:45:12,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:12,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:12,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:45:12,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:12,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:45:12,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:12,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 07:45:12,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:12,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:12,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:12,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:12,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:13,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:13,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:13,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:15,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:15,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 07:45:15,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:45:15,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3266 [2020-09-25 07:45:15,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:15,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:15,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 07:45:15,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:45:15,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 07:45:15,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:15,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:45:15,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:15,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:15,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:15,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:16,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:16,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 07:45:16,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:45:16,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-09-25 07:45:16,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:16,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:16,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:45:16,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:16,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 07:45:16,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:16,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:45:16,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:16,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:16,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:16,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:45:16,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:16,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 07:45:16,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:16,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:16,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:45:16,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:16,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:45:16,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:16,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 07:45:16,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:16,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:16,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:16,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:45:16,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:16,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 07:45:16,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:16,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:16,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:45:16,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:16,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:45:16,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:16,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 07:45:16,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:16,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:16,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:16,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:45:16,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:16,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 07:45:16,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:16,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:16,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:45:16,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:16,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:45:16,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:45:16,195 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 07:45:16,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1143814768] [2020-09-25 07:45:16,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:45:16,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 07:45:16,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432251051] [2020-09-25 07:45:16,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 07:45:16,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:45:16,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 07:45:16,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:45:16,199 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand 9 states. [2020-09-25 07:45:16,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:45:16,494 INFO L93 Difference]: Finished difference Result 140 states and 211 transitions. [2020-09-25 07:45:16,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 07:45:16,497 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-09-25 07:45:16,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:45:16,502 INFO L225 Difference]: With dead ends: 140 [2020-09-25 07:45:16,502 INFO L226 Difference]: Without dead ends: 92 [2020-09-25 07:45:16,506 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-09-25 07:45:16,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-25 07:45:16,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 84. [2020-09-25 07:45:16,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-25 07:45:16,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 119 transitions. [2020-09-25 07:45:16,538 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 119 transitions. Word has length 51 [2020-09-25 07:45:16,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:45:16,538 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 119 transitions. [2020-09-25 07:45:16,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 07:45:16,539 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 119 transitions. [2020-09-25 07:45:16,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 07:45:16,542 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:45:16,543 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 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] [2020-09-25 07:45:16,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:45:16,543 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:45:16,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:45:16,544 INFO L82 PathProgramCache]: Analyzing trace with hash -387134248, now seen corresponding path program 1 times [2020-09-25 07:45:16,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:45:16,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936782074] [2020-09-25 07:45:16,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:45:16,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:16,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:16,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:16,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:16,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:16,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:16,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:17,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:18,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:19,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:19,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:21,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:21,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:21,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 07:45:21,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 07:45:21,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 07:45:21,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:21,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:21,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 07:45:21,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 07:45:21,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 07:45:21,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:21,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:45:21,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:21,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:21,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:21,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:45:21,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:21,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:45:21,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:21,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:21,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:45:21,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:21,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:45:21,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:45:21,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 07:45:21,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:21,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:21,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:21,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:21,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:21,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:21,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:23,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:23,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:23,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:26,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:26,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 07:45:26,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 07:45:26,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 07:45:26,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:26,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:26,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 07:45:26,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 07:45:26,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 07:45:26,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:26,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:45:26,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:26,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:26,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:26,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:26,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 07:45:26,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:45:26,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-09-25 07:45:26,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:26,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:26,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:45:26,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:26,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 07:45:26,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:26,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:45:26,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:26,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:26,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:26,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:45:26,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:26,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 07:45:26,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:26,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:26,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:45:26,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:26,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:45:26,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:26,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 07:45:26,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:26,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:26,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:26,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:45:26,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:26,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 07:45:26,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:26,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:26,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:45:26,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:26,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:45:26,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:26,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:45:26,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:26,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:26,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:26,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:27,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:27,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 07:45:27,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:45:27,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 278 [2020-09-25 07:45:27,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:27,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:27,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:45:27,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:45:27,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 07:45:27,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:27,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:45:27,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:27,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:27,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:27,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:45:27,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:27,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 07:45:27,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:27,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:27,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:45:27,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:27,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:45:27,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:27,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 07:45:27,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:27,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:27,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:27,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:45:27,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:27,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 07:45:27,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:27,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:27,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:45:27,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:27,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:45:27,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:27,276 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-09-25 07:45:27,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936782074] [2020-09-25 07:45:27,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:45:27,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 07:45:27,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232259467] [2020-09-25 07:45:27,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 07:45:27,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:45:27,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 07:45:27,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-25 07:45:27,281 INFO L87 Difference]: Start difference. First operand 84 states and 119 transitions. Second operand 10 states. [2020-09-25 07:45:27,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:45:27,684 INFO L93 Difference]: Finished difference Result 171 states and 272 transitions. [2020-09-25 07:45:27,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 07:45:27,684 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 69 [2020-09-25 07:45:27,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:45:27,687 INFO L225 Difference]: With dead ends: 171 [2020-09-25 07:45:27,687 INFO L226 Difference]: Without dead ends: 73 [2020-09-25 07:45:27,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2020-09-25 07:45:27,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-09-25 07:45:27,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 65. [2020-09-25 07:45:27,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-25 07:45:27,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 79 transitions. [2020-09-25 07:45:27,701 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 79 transitions. Word has length 69 [2020-09-25 07:45:27,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:45:27,702 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 79 transitions. [2020-09-25 07:45:27,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 07:45:27,702 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 79 transitions. [2020-09-25 07:45:27,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 07:45:27,705 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:45:27,705 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 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] [2020-09-25 07:45:27,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 07:45:27,706 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:45:27,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:45:27,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1208671938, now seen corresponding path program 1 times [2020-09-25 07:45:27,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:45:27,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2112663862] [2020-09-25 07:45:27,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:45:27,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:27,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:27,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:27,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:27,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:27,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:27,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:28,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:31,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:31,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:32,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:32,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:32,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:32,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:32,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 07:45:32,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 07:45:32,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 07:45:32,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:32,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:32,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 07:45:32,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:45:32,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-25 07:45:32,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:32,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:45:32,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:32,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:32,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:32,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:45:32,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:32,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:45:32,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:32,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:32,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:45:32,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:32,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:45:32,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:32,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 07:45:32,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:32,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:32,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:32,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:32,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:33,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:33,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:33,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:33,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:33,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:34,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:34,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:37,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:37,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 07:45:37,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 07:45:37,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 07:45:37,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:37,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:37,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 07:45:37,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 07:45:37,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 07:45:37,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:45:37,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:45:37,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:37,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:37,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:37,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:37,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:38,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:38,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 07:45:38,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:45:38,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-09-25 07:45:38,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:38,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:38,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:45:38,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:38,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 07:45:38,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:45:38,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:45:38,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:38,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:38,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:38,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:45:38,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:38,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 07:45:38,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:38,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:38,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:45:38,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:38,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:45:38,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:45:38,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 07:45:38,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:38,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:38,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:38,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:45:38,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:38,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 07:45:38,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:38,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:38,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:45:38,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:38,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:45:38,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:38,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 07:45:38,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:38,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:38,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:38,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:38,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:38,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:38,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 07:45:38,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:45:38,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-09-25 07:45:38,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:38,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:38,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:45:38,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:45:38,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 07:45:38,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:38,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:45:38,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:38,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:38,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:38,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:45:38,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:38,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 07:45:38,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:38,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:38,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:45:38,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:38,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:45:38,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:38,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 07:45:38,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:38,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:38,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:38,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:38,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:45:38,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:45:38,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 07:45:38,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:38,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:38,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:45:38,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:38,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:45:38,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:45:38,465 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 22 proven. 26 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 07:45:38,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2112663862] [2020-09-25 07:45:38,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:45:38,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 07:45:38,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185964379] [2020-09-25 07:45:38,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 07:45:38,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:45:38,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 07:45:38,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:45:38,470 INFO L87 Difference]: Start difference. First operand 65 states and 79 transitions. Second operand 12 states. [2020-09-25 07:45:38,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:45:38,861 INFO L93 Difference]: Finished difference Result 159 states and 210 transitions. [2020-09-25 07:45:38,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 07:45:38,862 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 71 [2020-09-25 07:45:38,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:45:38,864 INFO L225 Difference]: With dead ends: 159 [2020-09-25 07:45:38,864 INFO L226 Difference]: Without dead ends: 100 [2020-09-25 07:45:38,866 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2020-09-25 07:45:38,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-09-25 07:45:38,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 86. [2020-09-25 07:45:38,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-25 07:45:38,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 104 transitions. [2020-09-25 07:45:38,892 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 104 transitions. Word has length 71 [2020-09-25 07:45:38,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:45:38,897 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 104 transitions. [2020-09-25 07:45:38,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 07:45:38,897 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 104 transitions. [2020-09-25 07:45:38,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-09-25 07:45:38,901 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:45:38,901 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:45:38,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 07:45:38,902 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:45:38,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:45:38,902 INFO L82 PathProgramCache]: Analyzing trace with hash 2103958142, now seen corresponding path program 1 times [2020-09-25 07:45:38,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:45:38,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160429659] [2020-09-25 07:45:38,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:45:38,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:38,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:38,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:39,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:39,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:39,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:39,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:39,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:39,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:39,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:39,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:39,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:39,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:39,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:40,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:43,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:43,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:43,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:43,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:43,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:43,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 07:45:43,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-09-25 07:45:43,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 07:45:43,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:43,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:43,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 07:45:43,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:45:43,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 07:45:43,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:45:43,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:45:43,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:43,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:43,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:43,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:45:43,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:43,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:45:43,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:43,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:43,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:45:43,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:43,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:45:43,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:45:43,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 07:45:43,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:43,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:43,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:44,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:44,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:44,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:44,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:44,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:44,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:44,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:44,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:44,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:44,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:44,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:45,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:45,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:45,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:45,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:45,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:45,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:48,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:48,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-25 07:45:48,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-09-25 07:45:48,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 07:45:48,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:48,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:48,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 07:45:48,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-09-25 07:45:48,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 07:45:48,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:45:48,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:45:48,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:48,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:48,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:48,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:48,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:49,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:50,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:50,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 07:45:50,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:45:50,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1143 [2020-09-25 07:45:50,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:50,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:50,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:45:50,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:50,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:45:50,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:45:50,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:45:50,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:50,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:50,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:50,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:50,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 07:45:50,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:45:50,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 07:45:50,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:50,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:50,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:45:50,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:50,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:45:50,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:45:50,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:45:50,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:50,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:50,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:50,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:45:50,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:50,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:45:50,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:50,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:50,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:45:50,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:50,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:45:50,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:45:50,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 07:45:50,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:50,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:50,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:50,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:45:50,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:50,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:45:50,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:50,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:50,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:45:50,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:50,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:45:50,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:45:50,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 07:45:50,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:50,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:50,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:50,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:45:50,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:50,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:45:50,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:50,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:50,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:45:50,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:50,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:45:50,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:45:50,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 07:45:50,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:50,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:50,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:50,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:50,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:50,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:50,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 07:45:50,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:45:50,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 604 [2020-09-25 07:45:50,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:50,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:50,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 07:45:50,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 07:45:50,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 07:45:50,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:45:50,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:45:50,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:50,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:50,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:50,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:50,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:50,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:50,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 07:45:50,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:45:50,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-25 07:45:50,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:50,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:50,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:45:50,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:50,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 07:45:50,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:51,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:45:51,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:51,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:51,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:51,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:45:51,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:51,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 07:45:51,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:51,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:51,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:45:51,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:51,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:45:51,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:51,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 07:45:51,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:51,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:51,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:51,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:45:51,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:51,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:45:51,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:51,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:51,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:45:51,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:51,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:45:51,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:51,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 07:45:51,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:51,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:51,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:51,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:45:51,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:51,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 07:45:51,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:51,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:51,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:45:51,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:45:51,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:45:51,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:45:51,091 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 61 proven. 3 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-09-25 07:45:51,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160429659] [2020-09-25 07:45:51,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:45:51,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 07:45:51,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486417313] [2020-09-25 07:45:51,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 07:45:51,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:45:51,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 07:45:51,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-25 07:45:51,094 INFO L87 Difference]: Start difference. First operand 86 states and 104 transitions. Second operand 11 states. [2020-09-25 07:45:51,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:45:51,261 INFO L93 Difference]: Finished difference Result 161 states and 205 transitions. [2020-09-25 07:45:51,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:45:51,261 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 102 [2020-09-25 07:45:51,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:45:51,265 INFO L225 Difference]: With dead ends: 161 [2020-09-25 07:45:51,265 INFO L226 Difference]: Without dead ends: 83 [2020-09-25 07:45:51,266 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-09-25 07:45:51,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-09-25 07:45:51,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 81. [2020-09-25 07:45:51,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-25 07:45:51,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 97 transitions. [2020-09-25 07:45:51,279 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 97 transitions. Word has length 102 [2020-09-25 07:45:51,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:45:51,281 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 97 transitions. [2020-09-25 07:45:51,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 07:45:51,281 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 97 transitions. [2020-09-25 07:45:51,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-25 07:45:51,282 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:45:51,283 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 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] [2020-09-25 07:45:51,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 07:45:51,283 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:45:51,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:45:51,283 INFO L82 PathProgramCache]: Analyzing trace with hash -594280133, now seen corresponding path program 2 times [2020-09-25 07:45:51,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:45:51,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [612573096] [2020-09-25 07:45:51,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:45:51,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:51,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:51,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:51,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:51,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:51,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:51,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:51,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:51,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:51,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:52,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:52,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:52,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking...