/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 SequenceOfStatements --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=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 02:38:50,062 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 02:38:50,065 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 02:38:50,089 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 02:38:50,090 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 02:38:50,091 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 02:38:50,092 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 02:38:50,094 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 02:38:50,096 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 02:38:50,096 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 02:38:50,097 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 02:38:50,098 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 02:38:50,099 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 02:38:50,100 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 02:38:50,101 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 02:38:50,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 02:38:50,103 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 02:38:50,104 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 02:38:50,105 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 02:38:50,110 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 02:38:50,115 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 02:38:50,116 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 02:38:50,120 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 02:38:50,122 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 02:38:50,127 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 02:38:50,128 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 02:38:50,128 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 02:38:50,129 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 02:38:50,132 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 02:38:50,133 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 02:38:50,133 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 02:38:50,134 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 02:38:50,135 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 02:38:50,136 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 02:38:50,137 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 02:38:50,137 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 02:38:50,138 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 02:38:50,138 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 02:38:50,138 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 02:38:50,140 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 02:38:50,143 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 02:38:50,144 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 [2020-10-14 02:38:50,192 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 02:38:50,195 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 02:38:50,196 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 02:38:50,197 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 02:38:50,200 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 02:38:50,200 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 02:38:50,201 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 02:38:50,201 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 02:38:50,201 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 02:38:50,201 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 02:38:50,201 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 02:38:50,201 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 02:38:50,202 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 02:38:50,202 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 02:38:50,202 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 02:38:50,202 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 02:38:50,202 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 02:38:50,203 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 02:38:50,203 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 02:38:50,204 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 02:38:50,205 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 02:38:50,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 02:38:50,205 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 02:38:50,205 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 02:38:50,205 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 02:38:50,206 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 02:38:50,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 02:38:50,206 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 02:38:50,206 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 02:38:50,206 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 -> SequenceOfStatements 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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 02:38:50,518 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 02:38:50,541 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 02:38:50,547 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 02:38:50,550 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 02:38:50,550 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 02:38:50,551 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label46.c [2020-10-14 02:38:50,612 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/53cb2739c/a944b10467954ce59e2543629802f08f/FLAGf36337df8 [2020-10-14 02:38:51,245 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 02:38:51,246 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label46.c [2020-10-14 02:38:51,259 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/53cb2739c/a944b10467954ce59e2543629802f08f/FLAGf36337df8 [2020-10-14 02:38:51,479 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/53cb2739c/a944b10467954ce59e2543629802f08f [2020-10-14 02:38:51,487 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 02:38:51,489 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 02:38:51,491 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 02:38:51,491 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 02:38:51,495 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 02:38:51,496 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:38:51" (1/1) ... [2020-10-14 02:38:51,499 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d6133a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:38:51, skipping insertion in model container [2020-10-14 02:38:51,499 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:38:51" (1/1) ... [2020-10-14 02:38:51,508 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 02:38:51,565 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 02:38:52,264 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:38:52,274 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 02:38:52,507 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:38:52,530 INFO L208 MainTranslator]: Completed translation [2020-10-14 02:38:52,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:38:52 WrapperNode [2020-10-14 02:38:52,531 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 02:38:52,532 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 02:38:52,532 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 02:38:52,533 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 02:38:52,556 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:38:52" (1/1) ... [2020-10-14 02:38:52,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:38:52" (1/1) ... [2020-10-14 02:38:52,584 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:38:52" (1/1) ... [2020-10-14 02:38:52,584 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:38:52" (1/1) ... [2020-10-14 02:38:52,649 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:38:52" (1/1) ... [2020-10-14 02:38:52,688 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:38:52" (1/1) ... [2020-10-14 02:38:52,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:38:52" (1/1) ... [2020-10-14 02:38:52,727 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 02:38:52,728 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 02:38:52,728 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 02:38:52,729 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 02:38:52,730 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:38:52" (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 [2020-10-14 02:38:52,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 02:38:52,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 02:38:52,826 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 02:38:52,827 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 02:38:52,827 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 02:38:52,827 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 02:38:52,827 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 02:38:52,827 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 02:38:52,828 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 02:38:52,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 02:38:52,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 02:38:54,839 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 02:38:54,840 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 02:38:54,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:38:54 BoogieIcfgContainer [2020-10-14 02:38:54,847 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 02:38:54,849 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 02:38:54,849 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 02:38:54,853 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 02:38:54,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:38:51" (1/3) ... [2020-10-14 02:38:54,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d77386d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:38:54, skipping insertion in model container [2020-10-14 02:38:54,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:38:52" (2/3) ... [2020-10-14 02:38:54,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d77386d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:38:54, skipping insertion in model container [2020-10-14 02:38:54,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:38:54" (3/3) ... [2020-10-14 02:38:54,857 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label46.c [2020-10-14 02:38:54,871 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 02:38:54,881 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 02:38:54,929 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 02:38:54,968 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 02:38:54,969 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 02:38:54,970 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 02:38:54,970 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 02:38:54,970 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 02:38:54,970 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 02:38:54,970 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 02:38:54,970 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 02:38:55,005 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2020-10-14 02:38:55,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 02:38:55,020 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:38:55,022 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:38:55,022 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:38:55,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:38:55,029 INFO L82 PathProgramCache]: Analyzing trace with hash -611621221, now seen corresponding path program 1 times [2020-10-14 02:38:55,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:38:55,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [311911376] [2020-10-14 02:38:55,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:38:55,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:55,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:55,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:55,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 02:38:55,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:55,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 458 [2020-10-14 02:38:55,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:55,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:55,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 02:38:55,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 02:38:55,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 02:38:55,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 02:38:55,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:38:55,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:55,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:55,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:55,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:38:55,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:55,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 02:38:55,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:55,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:55,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:38:55,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:38:55,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:38:55,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:38:55,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:38:55,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [311911376] [2020-10-14 02:38:55,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 02:38:55,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 02:38:55,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645078031] [2020-10-14 02:38:55,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:38:55,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:38:55,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:38:55,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:38:55,936 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 5 states. [2020-10-14 02:38:59,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:38:59,230 INFO L93 Difference]: Finished difference Result 999 states and 1795 transitions. [2020-10-14 02:38:59,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 02:38:59,232 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-10-14 02:38:59,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:38:59,254 INFO L225 Difference]: With dead ends: 999 [2020-10-14 02:38:59,255 INFO L226 Difference]: Without dead ends: 639 [2020-10-14 02:38:59,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:38:59,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2020-10-14 02:38:59,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 621. [2020-10-14 02:38:59,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2020-10-14 02:38:59,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 956 transitions. [2020-10-14 02:38:59,385 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 956 transitions. Word has length 68 [2020-10-14 02:38:59,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:38:59,386 INFO L479 AbstractCegarLoop]: Abstraction has 621 states and 956 transitions. [2020-10-14 02:38:59,386 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:38:59,386 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 956 transitions. [2020-10-14 02:38:59,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-14 02:38:59,394 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:38:59,394 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:38:59,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 02:38:59,395 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:38:59,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:38:59,396 INFO L82 PathProgramCache]: Analyzing trace with hash 742132470, now seen corresponding path program 1 times [2020-10-14 02:38:59,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:38:59,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1782666663] [2020-10-14 02:38:59,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:38:59,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:59,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:59,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:59,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:02,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:02,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-14 02:39:02,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:39:02,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2953 [2020-10-14 02:39:02,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:02,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:02,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:39:02,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 02:39:02,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 02:39:02,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 02:39:02,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:39:02,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:02,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:02,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:02,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:39:02,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:02,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 02:39:02,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:02,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:02,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:39:02,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:02,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:39:02,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:39:02,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:39:02,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:02,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:02,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:02,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 02:39:02,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:02,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-14 02:39:02,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:02,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:02,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:39:02,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:02,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 02:39:02,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-14 02:39:02,754 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 60 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:39:02,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1782666663] [2020-10-14 02:39:02,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:39:02,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:39:02,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958246157] [2020-10-14 02:39:02,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:39:02,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:39:02,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:39:02,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:39:02,759 INFO L87 Difference]: Start difference. First operand 621 states and 956 transitions. Second operand 5 states. [2020-10-14 02:39:05,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:39:05,222 INFO L93 Difference]: Finished difference Result 1816 states and 2843 transitions. [2020-10-14 02:39:05,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:39:05,223 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-10-14 02:39:05,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:39:05,234 INFO L225 Difference]: With dead ends: 1816 [2020-10-14 02:39:05,234 INFO L226 Difference]: Without dead ends: 1201 [2020-10-14 02:39:05,237 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:39:05,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1201 states. [2020-10-14 02:39:05,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1201 to 1197. [2020-10-14 02:39:05,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1197 states. [2020-10-14 02:39:05,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1763 transitions. [2020-10-14 02:39:05,298 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1763 transitions. Word has length 142 [2020-10-14 02:39:05,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:39:05,299 INFO L479 AbstractCegarLoop]: Abstraction has 1197 states and 1763 transitions. [2020-10-14 02:39:05,300 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:39:05,300 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1763 transitions. [2020-10-14 02:39:05,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-14 02:39:05,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:39:05,307 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:39:05,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 02:39:05,308 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:39:05,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:39:05,308 INFO L82 PathProgramCache]: Analyzing trace with hash 2062680534, now seen corresponding path program 1 times [2020-10-14 02:39:05,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:39:05,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [422915057] [2020-10-14 02:39:05,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:39:05,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:05,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:05,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:06,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:06,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-14 02:39:06,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:39:06,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 966 [2020-10-14 02:39:06,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:06,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:06,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 02:39:06,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 02:39:06,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-14 02:39:06,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:39:06,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:39:06,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:06,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:06,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:06,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:39:06,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:06,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 02:39:06,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:06,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:06,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:39:06,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:06,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:39:06,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:39:06,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:39:06,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:06,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:06,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:06,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:06,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 02:39:06,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:39:06,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-10-14 02:39:06,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:06,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:06,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:39:06,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:39:06,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 02:39:06,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:39:06,801 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 02:39:06,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [422915057] [2020-10-14 02:39:06,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:39:06,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:39:06,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960535570] [2020-10-14 02:39:06,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 02:39:06,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:39:06,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 02:39:06,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:39:06,804 INFO L87 Difference]: Start difference. First operand 1197 states and 1763 transitions. Second operand 6 states. [2020-10-14 02:39:09,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:39:09,077 INFO L93 Difference]: Finished difference Result 3577 states and 5489 transitions. [2020-10-14 02:39:09,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 02:39:09,078 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2020-10-14 02:39:09,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:39:09,094 INFO L225 Difference]: With dead ends: 3577 [2020-10-14 02:39:09,094 INFO L226 Difference]: Without dead ends: 2386 [2020-10-14 02:39:09,099 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 02:39:09,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2386 states. [2020-10-14 02:39:09,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2386 to 1988. [2020-10-14 02:39:09,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1988 states. [2020-10-14 02:39:09,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1988 states to 1988 states and 2804 transitions. [2020-10-14 02:39:09,185 INFO L78 Accepts]: Start accepts. Automaton has 1988 states and 2804 transitions. Word has length 158 [2020-10-14 02:39:09,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:39:09,185 INFO L479 AbstractCegarLoop]: Abstraction has 1988 states and 2804 transitions. [2020-10-14 02:39:09,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 02:39:09,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1988 states and 2804 transitions. [2020-10-14 02:39:09,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-14 02:39:09,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:39:09,193 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:39:09,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 02:39:09,193 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:39:09,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:39:09,194 INFO L82 PathProgramCache]: Analyzing trace with hash -581558230, now seen corresponding path program 1 times [2020-10-14 02:39:09,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:39:09,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [588874640] [2020-10-14 02:39:09,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:39:09,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:09,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:09,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:09,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-14 02:39:09,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:09,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 645 [2020-10-14 02:39:09,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:09,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:09,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 02:39:09,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 02:39:09,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-14 02:39:09,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:09,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:39:09,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:09,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:09,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:09,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:39:09,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:09,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 02:39:09,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:09,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:09,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:39:09,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:09,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:39:09,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:39:10,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:39:10,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:10,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:10,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:10,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:39:10,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:10,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 292 [2020-10-14 02:39:10,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:10,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:10,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:39:10,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:39:10,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 02:39:10,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:39:10,600 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:39:10,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [588874640] [2020-10-14 02:39:10,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 02:39:10,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 02:39:10,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908049530] [2020-10-14 02:39:10,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:39:10,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:39:10,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:39:10,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:39:10,605 INFO L87 Difference]: Start difference. First operand 1988 states and 2804 transitions. Second operand 7 states. [2020-10-14 02:39:13,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:39:13,125 INFO L93 Difference]: Finished difference Result 5567 states and 8165 transitions. [2020-10-14 02:39:13,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 02:39:13,126 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 205 [2020-10-14 02:39:13,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:39:13,148 INFO L225 Difference]: With dead ends: 5567 [2020-10-14 02:39:13,149 INFO L226 Difference]: Without dead ends: 3585 [2020-10-14 02:39:13,158 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:39:13,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3585 states. [2020-10-14 02:39:13,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3585 to 2963. [2020-10-14 02:39:13,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2963 states. [2020-10-14 02:39:13,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2963 states to 2963 states and 3785 transitions. [2020-10-14 02:39:13,315 INFO L78 Accepts]: Start accepts. Automaton has 2963 states and 3785 transitions. Word has length 205 [2020-10-14 02:39:13,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:39:13,316 INFO L479 AbstractCegarLoop]: Abstraction has 2963 states and 3785 transitions. [2020-10-14 02:39:13,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:39:13,317 INFO L276 IsEmpty]: Start isEmpty. Operand 2963 states and 3785 transitions. [2020-10-14 02:39:13,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-10-14 02:39:13,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:39:13,321 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:39:13,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 02:39:13,322 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:39:13,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:39:13,322 INFO L82 PathProgramCache]: Analyzing trace with hash -1651859484, now seen corresponding path program 1 times [2020-10-14 02:39:13,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:39:13,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [453802975] [2020-10-14 02:39:13,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:39:13,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:13,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:13,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:15,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:15,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-10-14 02:39:15,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:39:15,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1932 [2020-10-14 02:39:15,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:15,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:15,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:39:15,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 175 [2020-10-14 02:39:15,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 02:39:15,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:39:15,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:39:15,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:15,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:15,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:15,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:39:15,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:15,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:39:15,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:15,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:15,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:39:15,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:15,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:39:15,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:39:15,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:39:15,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:15,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:15,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:15,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-14 02:39:15,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:15,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-14 02:39:15,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:15,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:15,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:39:15,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:15,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-14 02:39:15,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:39:15,891 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 60 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:39:15,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [453802975] [2020-10-14 02:39:15,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:39:15,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:39:15,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427494445] [2020-10-14 02:39:15,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:39:15,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:39:15,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:39:15,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:39:15,894 INFO L87 Difference]: Start difference. First operand 2963 states and 3785 transitions. Second operand 5 states. [2020-10-14 02:39:18,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:39:18,043 INFO L93 Difference]: Finished difference Result 6891 states and 8784 transitions. [2020-10-14 02:39:18,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:39:18,044 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 233 [2020-10-14 02:39:18,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:39:18,065 INFO L225 Difference]: With dead ends: 6891 [2020-10-14 02:39:18,065 INFO L226 Difference]: Without dead ends: 3934 [2020-10-14 02:39:18,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:39:18,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3934 states. [2020-10-14 02:39:18,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3934 to 3737. [2020-10-14 02:39:18,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3737 states. [2020-10-14 02:39:18,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3737 states to 3737 states and 4730 transitions. [2020-10-14 02:39:18,182 INFO L78 Accepts]: Start accepts. Automaton has 3737 states and 4730 transitions. Word has length 233 [2020-10-14 02:39:18,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:39:18,184 INFO L479 AbstractCegarLoop]: Abstraction has 3737 states and 4730 transitions. [2020-10-14 02:39:18,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:39:18,184 INFO L276 IsEmpty]: Start isEmpty. Operand 3737 states and 4730 transitions. [2020-10-14 02:39:18,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2020-10-14 02:39:18,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:39:18,193 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:39:18,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 02:39:18,194 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:39:18,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:39:18,194 INFO L82 PathProgramCache]: Analyzing trace with hash -2139129697, now seen corresponding path program 1 times [2020-10-14 02:39:18,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:39:18,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1027310017] [2020-10-14 02:39:18,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:39:18,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:18,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:18,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:19,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:19,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 301 [2020-10-14 02:39:19,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:39:19,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1160 [2020-10-14 02:39:19,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:19,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:19,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:39:19,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-14 02:39:19,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 02:39:19,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:19,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:39:19,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:19,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:19,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:19,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:39:19,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:19,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 02:39:19,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:19,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:19,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:39:19,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:19,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:39:19,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:39:19,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:39:19,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:19,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:19,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:19,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:39:19,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:19,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-14 02:39:19,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:19,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:19,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:39:19,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:19,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 02:39:19,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:39:19,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 02:39:19,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:19,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:19,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:19,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 02:39:19,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:19,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-14 02:39:19,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:19,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:19,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:39:19,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:39:19,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 02:39:19,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:39:20,100 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 209 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:39:20,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1027310017] [2020-10-14 02:39:20,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:39:20,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:39:20,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113655349] [2020-10-14 02:39:20,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:39:20,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:39:20,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:39:20,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:39:20,105 INFO L87 Difference]: Start difference. First operand 3737 states and 4730 transitions. Second operand 7 states. [2020-10-14 02:39:23,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:39:23,050 INFO L93 Difference]: Finished difference Result 8291 states and 10534 transitions. [2020-10-14 02:39:23,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 02:39:23,051 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 289 [2020-10-14 02:39:23,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:39:23,070 INFO L225 Difference]: With dead ends: 8291 [2020-10-14 02:39:23,071 INFO L226 Difference]: Without dead ends: 4748 [2020-10-14 02:39:23,080 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:39:23,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4748 states. [2020-10-14 02:39:23,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4748 to 4350. [2020-10-14 02:39:23,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4350 states. [2020-10-14 02:39:23,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4350 states to 4350 states and 5422 transitions. [2020-10-14 02:39:23,191 INFO L78 Accepts]: Start accepts. Automaton has 4350 states and 5422 transitions. Word has length 289 [2020-10-14 02:39:23,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:39:23,192 INFO L479 AbstractCegarLoop]: Abstraction has 4350 states and 5422 transitions. [2020-10-14 02:39:23,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:39:23,192 INFO L276 IsEmpty]: Start isEmpty. Operand 4350 states and 5422 transitions. [2020-10-14 02:39:23,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-10-14 02:39:23,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:39:23,202 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:39:23,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 02:39:23,202 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:39:23,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:39:23,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1375107468, now seen corresponding path program 1 times [2020-10-14 02:39:23,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:39:23,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [858190558] [2020-10-14 02:39:23,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:39:23,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:23,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:23,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:25,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:25,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 319 [2020-10-14 02:39:25,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:39:25,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1727 [2020-10-14 02:39:25,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:25,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:25,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:39:25,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-14 02:39:25,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 02:39:25,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:39:25,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:39:25,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:25,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:25,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:25,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:39:25,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:25,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 02:39:25,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:25,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:25,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:39:25,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:25,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:39:25,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:39:25,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:39:25,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:25,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:25,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:25,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:39:25,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:25,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-14 02:39:25,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:25,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:25,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:39:25,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:25,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 02:39:25,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:39:25,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 02:39:25,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:25,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:25,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:25,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 02:39:25,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:25,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-14 02:39:25,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:25,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:25,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:39:25,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:39:25,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 02:39:25,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:39:25,814 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 227 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:39:25,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [858190558] [2020-10-14 02:39:25,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:39:25,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:39:25,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495270014] [2020-10-14 02:39:25,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:39:25,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:39:25,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:39:25,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:39:25,818 INFO L87 Difference]: Start difference. First operand 4350 states and 5422 transitions. Second operand 7 states. [2020-10-14 02:39:28,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:39:28,894 INFO L93 Difference]: Finished difference Result 10662 states and 15051 transitions. [2020-10-14 02:39:28,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 02:39:28,895 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 307 [2020-10-14 02:39:28,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:39:28,935 INFO L225 Difference]: With dead ends: 10662 [2020-10-14 02:39:28,935 INFO L226 Difference]: Without dead ends: 6506 [2020-10-14 02:39:28,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:39:28,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6506 states. [2020-10-14 02:39:29,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6506 to 6330. [2020-10-14 02:39:29,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6330 states. [2020-10-14 02:39:29,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6330 states to 6330 states and 7947 transitions. [2020-10-14 02:39:29,185 INFO L78 Accepts]: Start accepts. Automaton has 6330 states and 7947 transitions. Word has length 307 [2020-10-14 02:39:29,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:39:29,186 INFO L479 AbstractCegarLoop]: Abstraction has 6330 states and 7947 transitions. [2020-10-14 02:39:29,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:39:29,186 INFO L276 IsEmpty]: Start isEmpty. Operand 6330 states and 7947 transitions. [2020-10-14 02:39:29,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2020-10-14 02:39:29,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:39:29,221 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:39:29,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 02:39:29,221 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:39:29,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:39:29,222 INFO L82 PathProgramCache]: Analyzing trace with hash -2043225877, now seen corresponding path program 1 times [2020-10-14 02:39:29,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:39:29,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [262678897] [2020-10-14 02:39:29,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:39:29,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:29,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:29,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:31,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:31,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:34,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:34,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:34,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 455 [2020-10-14 02:39:34,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 02:39:34,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-14 02:39:34,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:34,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:34,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:39:34,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-14 02:39:34,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-14 02:39:34,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:34,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:39:34,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:34,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:34,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:34,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:39:34,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:34,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:39:34,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:34,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:34,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:39:34,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:34,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:39:34,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:39:34,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:39:34,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:34,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:34,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:34,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:39:34,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:34,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 02:39:34,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:34,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:34,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:39:34,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:34,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 02:39:34,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:34,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 02:39:34,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:34,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:34,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:34,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-14 02:39:34,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:34,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-14 02:39:34,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:34,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:34,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:39:34,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:39:34,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-14 02:39:34,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:39:35,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-10-14 02:39:35,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:35,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:35,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:35,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 02:39:35,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:35,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 02:39:35,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:35,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:35,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:39:35,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-14 02:39:35,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:39:35,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:39:35,289 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 313 proven. 89 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-14 02:39:35,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [262678897] [2020-10-14 02:39:35,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:39:35,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:39:35,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798350999] [2020-10-14 02:39:35,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:39:35,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:39:35,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:39:35,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:39:35,293 INFO L87 Difference]: Start difference. First operand 6330 states and 7947 transitions. Second operand 7 states. [2020-10-14 02:39:38,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:39:38,304 INFO L93 Difference]: Finished difference Result 13914 states and 17559 transitions. [2020-10-14 02:39:38,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 02:39:38,305 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 441 [2020-10-14 02:39:38,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:39:38,347 INFO L225 Difference]: With dead ends: 13914 [2020-10-14 02:39:38,347 INFO L226 Difference]: Without dead ends: 7778 [2020-10-14 02:39:38,363 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:39:38,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7778 states. [2020-10-14 02:39:38,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7778 to 7744. [2020-10-14 02:39:38,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7744 states. [2020-10-14 02:39:38,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7744 states to 7744 states and 9491 transitions. [2020-10-14 02:39:38,572 INFO L78 Accepts]: Start accepts. Automaton has 7744 states and 9491 transitions. Word has length 441 [2020-10-14 02:39:38,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:39:38,573 INFO L479 AbstractCegarLoop]: Abstraction has 7744 states and 9491 transitions. [2020-10-14 02:39:38,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:39:38,573 INFO L276 IsEmpty]: Start isEmpty. Operand 7744 states and 9491 transitions. [2020-10-14 02:39:38,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2020-10-14 02:39:38,609 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:39:38,610 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:39:38,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 02:39:38,610 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:39:38,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:39:38,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1632127052, now seen corresponding path program 1 times [2020-10-14 02:39:38,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:39:38,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [989169321] [2020-10-14 02:39:38,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:39:38,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:38,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:38,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:39,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:43,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:43,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 460 [2020-10-14 02:39:43,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:39:43,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-14 02:39:43,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:43,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:43,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:39:43,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 253 [2020-10-14 02:39:43,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 02:39:43,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:39:43,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:39:43,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:43,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:43,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:43,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:39:43,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:43,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:39:43,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:43,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:43,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:39:43,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:43,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:39:43,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:43,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:39:43,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:43,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:43,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:43,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 02:39:43,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:43,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 02:39:43,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:43,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:43,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:39:43,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:43,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:39:43,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:39:43,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-14 02:39:44,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:44,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:44,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:44,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:39:44,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:44,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-14 02:39:44,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:44,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:44,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:39:44,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:44,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-14 02:39:44,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:39:44,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-10-14 02:39:44,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:44,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:44,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:44,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:39:44,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:44,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-14 02:39:44,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:44,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:44,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:39:44,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:39:44,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 02:39:44,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:44,662 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 423 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-10-14 02:39:44,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [989169321] [2020-10-14 02:39:44,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:39:44,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:39:44,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355306005] [2020-10-14 02:39:44,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:39:44,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:39:44,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:39:44,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:39:44,665 INFO L87 Difference]: Start difference. First operand 7744 states and 9491 transitions. Second operand 7 states. [2020-10-14 02:39:47,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:39:47,033 INFO L93 Difference]: Finished difference Result 17043 states and 20962 transitions. [2020-10-14 02:39:47,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 02:39:47,035 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 446 [2020-10-14 02:39:47,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:39:47,065 INFO L225 Difference]: With dead ends: 17043 [2020-10-14 02:39:47,065 INFO L226 Difference]: Without dead ends: 9493 [2020-10-14 02:39:47,083 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:39:47,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9493 states. [2020-10-14 02:39:47,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9493 to 8522. [2020-10-14 02:39:47,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8522 states. [2020-10-14 02:39:47,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8522 states to 8522 states and 10492 transitions. [2020-10-14 02:39:47,276 INFO L78 Accepts]: Start accepts. Automaton has 8522 states and 10492 transitions. Word has length 446 [2020-10-14 02:39:47,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:39:47,277 INFO L479 AbstractCegarLoop]: Abstraction has 8522 states and 10492 transitions. [2020-10-14 02:39:47,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:39:47,277 INFO L276 IsEmpty]: Start isEmpty. Operand 8522 states and 10492 transitions. [2020-10-14 02:39:47,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2020-10-14 02:39:47,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:39:47,309 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:39:47,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 02:39:47,309 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:39:47,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:39:47,310 INFO L82 PathProgramCache]: Analyzing trace with hash -237163012, now seen corresponding path program 1 times [2020-10-14 02:39:47,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:39:47,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [464564817] [2020-10-14 02:39:47,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:39:47,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:47,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:47,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:47,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:50,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:52,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:52,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 524 [2020-10-14 02:39:52,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:39:52,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-14 02:39:52,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:52,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:52,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:39:52,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 226 [2020-10-14 02:39:52,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-14 02:39:52,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:52,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:39:52,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:52,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:52,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:52,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:39:52,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:52,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:39:52,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:52,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:52,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:39:52,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:52,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:39:52,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:52,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:39:52,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:52,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:52,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:52,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:39:52,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:52,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 02:39:52,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:52,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:52,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:39:52,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:52,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:39:52,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:52,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 02:39:52,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:52,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:52,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:52,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 02:39:52,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:52,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 02:39:52,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:52,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:52,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:39:52,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:52,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 02:39:52,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:52,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-14 02:39:52,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:52,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:52,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:52,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-14 02:39:52,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:52,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-14 02:39:52,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:52,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:52,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:39:52,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:39:52,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-14 02:39:52,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:39:52,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-10-14 02:39:52,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:53,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:53,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:53,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 02:39:53,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:53,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 02:39:53,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:53,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:53,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:39:53,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-14 02:39:53,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:39:53,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:53,288 INFO L134 CoverageAnalysis]: Checked inductivity of 802 backedges. 463 proven. 89 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2020-10-14 02:39:53,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [464564817] [2020-10-14 02:39:53,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:39:53,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:39:53,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727579275] [2020-10-14 02:39:53,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:39:53,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:39:53,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:39:53,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:39:53,290 INFO L87 Difference]: Start difference. First operand 8522 states and 10492 transitions. Second operand 7 states. [2020-10-14 02:39:56,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:39:56,399 INFO L93 Difference]: Finished difference Result 19487 states and 26293 transitions. [2020-10-14 02:39:56,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 02:39:56,400 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 508 [2020-10-14 02:39:56,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:39:56,447 INFO L225 Difference]: With dead ends: 19487 [2020-10-14 02:39:56,447 INFO L226 Difference]: Without dead ends: 11159 [2020-10-14 02:39:56,471 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:39:56,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11159 states. [2020-10-14 02:39:56,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11159 to 9869. [2020-10-14 02:39:56,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9869 states. [2020-10-14 02:39:56,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9869 states to 9869 states and 12292 transitions. [2020-10-14 02:39:56,796 INFO L78 Accepts]: Start accepts. Automaton has 9869 states and 12292 transitions. Word has length 508 [2020-10-14 02:39:56,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:39:56,797 INFO L479 AbstractCegarLoop]: Abstraction has 9869 states and 12292 transitions. [2020-10-14 02:39:56,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:39:56,798 INFO L276 IsEmpty]: Start isEmpty. Operand 9869 states and 12292 transitions. [2020-10-14 02:39:56,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2020-10-14 02:39:56,840 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:39:56,840 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:39:56,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 02:39:56,841 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:39:56,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:39:56,841 INFO L82 PathProgramCache]: Analyzing trace with hash 374113484, now seen corresponding path program 1 times [2020-10-14 02:39:56,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:39:56,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1105887915] [2020-10-14 02:39:56,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:39:56,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:56,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:57,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:57,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:00,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:00,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:01,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:01,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 548 [2020-10-14 02:40:01,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 02:40:01,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 02:40:01,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:01,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:01,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:01,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 250 [2020-10-14 02:40:01,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-14 02:40:01,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:02,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:40:02,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:02,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:02,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:02,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:40:02,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:02,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 02:40:02,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:02,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:02,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:02,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:02,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:02,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:02,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:40:02,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:02,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:02,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:02,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:40:02,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:02,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 02:40:02,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:02,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:02,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:02,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:02,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:02,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:02,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 02:40:02,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:02,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:02,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:02,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 02:40:02,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:02,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 02:40:02,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:02,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:02,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:40:02,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:02,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 02:40:02,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:02,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-14 02:40:02,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:02,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:02,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:02,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-14 02:40:02,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:02,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-14 02:40:02,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:02,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:02,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:02,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:40:02,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-14 02:40:02,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:02,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2020-10-14 02:40:02,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:02,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:02,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:02,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 02:40:02,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:02,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 02:40:02,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:02,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:02,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:02,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-14 02:40:02,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:02,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:40:02,717 INFO L134 CoverageAnalysis]: Checked inductivity of 857 backedges. 487 proven. 89 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2020-10-14 02:40:02,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1105887915] [2020-10-14 02:40:02,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:40:02,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:40:02,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307280210] [2020-10-14 02:40:02,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:40:02,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:40:02,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:40:02,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:40:02,720 INFO L87 Difference]: Start difference. First operand 9869 states and 12292 transitions. Second operand 7 states. [2020-10-14 02:40:06,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:40:06,048 INFO L93 Difference]: Finished difference Result 19963 states and 26278 transitions. [2020-10-14 02:40:06,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 02:40:06,049 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 532 [2020-10-14 02:40:06,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:40:06,091 INFO L225 Difference]: With dead ends: 19963 [2020-10-14 02:40:06,092 INFO L226 Difference]: Without dead ends: 10288 [2020-10-14 02:40:06,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:40:06,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10288 states. [2020-10-14 02:40:06,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10288 to 9855. [2020-10-14 02:40:06,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9855 states. [2020-10-14 02:40:06,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9855 states to 9855 states and 12151 transitions. [2020-10-14 02:40:06,384 INFO L78 Accepts]: Start accepts. Automaton has 9855 states and 12151 transitions. Word has length 532 [2020-10-14 02:40:06,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:40:06,385 INFO L479 AbstractCegarLoop]: Abstraction has 9855 states and 12151 transitions. [2020-10-14 02:40:06,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:40:06,385 INFO L276 IsEmpty]: Start isEmpty. Operand 9855 states and 12151 transitions. [2020-10-14 02:40:06,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2020-10-14 02:40:06,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:40:06,417 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:40:06,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 02:40:06,418 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:40:06,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:40:06,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1963867933, now seen corresponding path program 1 times [2020-10-14 02:40:06,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:40:06,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041530657] [2020-10-14 02:40:06,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:40:06,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:06,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:06,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:08,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:09,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:11,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:11,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 554 [2020-10-14 02:40:11,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:40:11,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 02:40:11,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:11,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:11,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:11,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-10-14 02:40:11,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 02:40:11,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:11,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:40:11,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:11,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:11,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:11,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:40:11,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:11,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:40:11,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:11,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:11,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:11,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:11,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:11,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:11,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:40:11,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:11,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:11,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:11,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 02:40:11,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:11,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 02:40:11,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:11,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:11,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:40:11,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:11,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-14 02:40:11,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:11,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-14 02:40:11,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:11,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:11,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:11,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 02:40:11,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:11,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 02:40:11,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:11,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:11,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:11,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:40:11,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 02:40:11,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:11,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-14 02:40:11,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:11,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:11,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:11,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:40:11,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:11,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 02:40:11,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:11,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:11,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:11,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 02:40:11,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:11,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:11,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2020-10-14 02:40:11,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:11,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:11,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:11,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:40:11,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:11,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 02:40:11,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:11,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:11,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:11,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 02:40:11,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:11,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:12,101 INFO L134 CoverageAnalysis]: Checked inductivity of 857 backedges. 335 proven. 168 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2020-10-14 02:40:12,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041530657] [2020-10-14 02:40:12,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:40:12,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:40:12,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443253252] [2020-10-14 02:40:12,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:40:12,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:40:12,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:40:12,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:40:12,103 INFO L87 Difference]: Start difference. First operand 9855 states and 12151 transitions. Second operand 7 states. [2020-10-14 02:40:15,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:40:15,186 INFO L93 Difference]: Finished difference Result 22033 states and 27325 transitions. [2020-10-14 02:40:15,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:40:15,190 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 538 [2020-10-14 02:40:15,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:40:15,213 INFO L225 Difference]: With dead ends: 22033 [2020-10-14 02:40:15,214 INFO L226 Difference]: Without dead ends: 12372 [2020-10-14 02:40:15,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:40:15,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12372 states. [2020-10-14 02:40:15,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12372 to 11978. [2020-10-14 02:40:15,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11978 states. [2020-10-14 02:40:15,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11978 states to 11978 states and 14637 transitions. [2020-10-14 02:40:15,454 INFO L78 Accepts]: Start accepts. Automaton has 11978 states and 14637 transitions. Word has length 538 [2020-10-14 02:40:15,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:40:15,454 INFO L479 AbstractCegarLoop]: Abstraction has 11978 states and 14637 transitions. [2020-10-14 02:40:15,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:40:15,455 INFO L276 IsEmpty]: Start isEmpty. Operand 11978 states and 14637 transitions. [2020-10-14 02:40:15,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2020-10-14 02:40:15,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:40:15,481 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:40:15,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 02:40:15,482 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:40:15,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:40:15,482 INFO L82 PathProgramCache]: Analyzing trace with hash -916253145, now seen corresponding path program 1 times [2020-10-14 02:40:15,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:40:15,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [986380413] [2020-10-14 02:40:15,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:40:15,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:15,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:15,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:16,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:18,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:18,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 564 [2020-10-14 02:40:18,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:40:18,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3247 [2020-10-14 02:40:18,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:18,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:18,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:18,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 250 [2020-10-14 02:40:18,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-14 02:40:18,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:18,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:40:18,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:18,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:18,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:18,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:40:18,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:18,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:40:18,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:18,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:18,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:18,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:18,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:18,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:18,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:40:18,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:18,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:18,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:18,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:40:18,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:18,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 02:40:18,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:18,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:18,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:18,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:18,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:18,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:18,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 02:40:18,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:18,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:19,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:19,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 02:40:19,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:19,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 02:40:19,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:19,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:19,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:40:19,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:19,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 02:40:19,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:19,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-14 02:40:19,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:19,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:19,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:19,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-14 02:40:19,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:19,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-14 02:40:19,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:19,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:19,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:19,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:40:19,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-14 02:40:19,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:19,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-10-14 02:40:19,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:19,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:19,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:19,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 02:40:19,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:19,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 02:40:19,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:19,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:19,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:19,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-14 02:40:19,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:19,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:19,456 INFO L134 CoverageAnalysis]: Checked inductivity of 857 backedges. 487 proven. 89 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2020-10-14 02:40:19,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [986380413] [2020-10-14 02:40:19,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:40:19,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:40:19,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782723772] [2020-10-14 02:40:19,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:40:19,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:40:19,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:40:19,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:40:19,458 INFO L87 Difference]: Start difference. First operand 11978 states and 14637 transitions. Second operand 7 states. [2020-10-14 02:40:22,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:40:22,008 INFO L93 Difference]: Finished difference Result 26262 states and 32208 transitions. [2020-10-14 02:40:22,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 02:40:22,009 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 548 [2020-10-14 02:40:22,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:40:22,048 INFO L225 Difference]: With dead ends: 26262 [2020-10-14 02:40:22,048 INFO L226 Difference]: Without dead ends: 14478 [2020-10-14 02:40:22,066 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:40:22,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14478 states. [2020-10-14 02:40:22,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14478 to 14438. [2020-10-14 02:40:22,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14438 states. [2020-10-14 02:40:22,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14438 states to 14438 states and 17368 transitions. [2020-10-14 02:40:22,513 INFO L78 Accepts]: Start accepts. Automaton has 14438 states and 17368 transitions. Word has length 548 [2020-10-14 02:40:22,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:40:22,514 INFO L479 AbstractCegarLoop]: Abstraction has 14438 states and 17368 transitions. [2020-10-14 02:40:22,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:40:22,514 INFO L276 IsEmpty]: Start isEmpty. Operand 14438 states and 17368 transitions. [2020-10-14 02:40:22,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 555 [2020-10-14 02:40:22,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:40:22,538 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 02:40:22,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 02:40:22,538 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:40:22,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:40:22,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1842942852, now seen corresponding path program 1 times [2020-10-14 02:40:22,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:40:22,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1323163043] [2020-10-14 02:40:22,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:40:22,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:22,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:23,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:23,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:26,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:27,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:27,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 570 [2020-10-14 02:40:27,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:40:27,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-14 02:40:27,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:27,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:27,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 02:40:27,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 02:40:27,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 358 [2020-10-14 02:40:27,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:27,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:40:27,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:27,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:27,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:27,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:40:27,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:27,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:40:27,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:27,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:27,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:40:27,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:27,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:40:27,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:27,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:40:27,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:27,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:27,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:27,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 02:40:27,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:27,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-14 02:40:27,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:27,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:27,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:27,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:40:27,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-14 02:40:27,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:27,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 02:40:27,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:27,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:28,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:28,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 02:40:28,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:28,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 02:40:28,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:28,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:28,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 02:40:28,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:40:28,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 02:40:28,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:28,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-14 02:40:28,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:28,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:28,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:28,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:28,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:40:28,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:40:28,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-14 02:40:28,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:28,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:28,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:28,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:40:28,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 02:40:28,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:28,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-10-14 02:40:28,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:28,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:28,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:28,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:40:28,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:28,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 02:40:28,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:28,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:28,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:28,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 02:40:28,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:28,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:28,771 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 261 proven. 536 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-14 02:40:28,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1323163043] [2020-10-14 02:40:28,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:40:28,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 02:40:28,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344418260] [2020-10-14 02:40:28,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 02:40:28,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:40:28,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 02:40:28,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-14 02:40:28,773 INFO L87 Difference]: Start difference. First operand 14438 states and 17368 transitions. Second operand 10 states. [2020-10-14 02:40:34,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:40:34,565 INFO L93 Difference]: Finished difference Result 37577 states and 48327 transitions. [2020-10-14 02:40:34,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 02:40:34,567 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 554 [2020-10-14 02:40:34,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:40:34,647 INFO L225 Difference]: With dead ends: 37577 [2020-10-14 02:40:34,647 INFO L226 Difference]: Without dead ends: 23333 [2020-10-14 02:40:34,676 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2020-10-14 02:40:34,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23333 states. [2020-10-14 02:40:35,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23333 to 22183. [2020-10-14 02:40:35,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22183 states. [2020-10-14 02:40:35,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22183 states to 22183 states and 26610 transitions. [2020-10-14 02:40:35,225 INFO L78 Accepts]: Start accepts. Automaton has 22183 states and 26610 transitions. Word has length 554 [2020-10-14 02:40:35,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:40:35,225 INFO L479 AbstractCegarLoop]: Abstraction has 22183 states and 26610 transitions. [2020-10-14 02:40:35,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 02:40:35,226 INFO L276 IsEmpty]: Start isEmpty. Operand 22183 states and 26610 transitions. [2020-10-14 02:40:35,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2020-10-14 02:40:35,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:40:35,259 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:40:35,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 02:40:35,260 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:40:35,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:40:35,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1619757918, now seen corresponding path program 1 times [2020-10-14 02:40:35,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:40:35,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [250849962] [2020-10-14 02:40:35,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:40:35,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:35,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:35,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:37,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:37,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:40,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:40,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 597 [2020-10-14 02:40:40,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:40:40,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-14 02:40:40,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:40,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:40,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:40,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-14 02:40:40,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-14 02:40:40,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:40,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:40:40,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:40,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:40,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:40,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:40:40,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:40,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:40:40,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:40,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:40,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:40,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:40,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:40,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:40,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:40:40,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:40,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:40,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:40,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:40:40,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:40,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 02:40:40,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:40,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:40,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:40:40,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:40,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 02:40:40,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:40,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 02:40:40,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:40,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:40,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:40,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 02:40:40,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:40,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 02:40:40,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:40,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:40,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:40,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:40:40,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 02:40:40,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:40,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2020-10-14 02:40:40,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:40,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:40,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:40,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-14 02:40:40,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:40,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 02:40:40,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:40,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:40,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:40,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 167 [2020-10-14 02:40:40,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:40,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:40,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2020-10-14 02:40:40,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:40,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:40,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:40,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 02:40:40,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:40,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 02:40:40,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:40,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:40,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:40,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-14 02:40:40,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:40,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:41,076 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 372 proven. 209 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2020-10-14 02:40:41,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [250849962] [2020-10-14 02:40:41,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:40:41,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:40:41,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213193106] [2020-10-14 02:40:41,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:40:41,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:40:41,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:40:41,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:40:41,078 INFO L87 Difference]: Start difference. First operand 22183 states and 26610 transitions. Second operand 7 states. [2020-10-14 02:40:44,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:40:44,029 INFO L93 Difference]: Finished difference Result 48168 states and 57633 transitions. [2020-10-14 02:40:44,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:40:44,031 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 581 [2020-10-14 02:40:44,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:40:44,106 INFO L225 Difference]: With dead ends: 48168 [2020-10-14 02:40:44,106 INFO L226 Difference]: Without dead ends: 26371 [2020-10-14 02:40:44,140 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:40:44,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26371 states. [2020-10-14 02:40:44,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26371 to 25589. [2020-10-14 02:40:44,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25589 states. [2020-10-14 02:40:44,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25589 states to 25589 states and 30281 transitions. [2020-10-14 02:40:44,635 INFO L78 Accepts]: Start accepts. Automaton has 25589 states and 30281 transitions. Word has length 581 [2020-10-14 02:40:44,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:40:44,636 INFO L479 AbstractCegarLoop]: Abstraction has 25589 states and 30281 transitions. [2020-10-14 02:40:44,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:40:44,636 INFO L276 IsEmpty]: Start isEmpty. Operand 25589 states and 30281 transitions. [2020-10-14 02:40:44,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 593 [2020-10-14 02:40:44,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:40:44,675 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:40:44,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 02:40:44,675 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:40:44,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:40:44,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1873009983, now seen corresponding path program 1 times [2020-10-14 02:40:44,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:40:44,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1499338898] [2020-10-14 02:40:44,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:40:44,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:44,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:44,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:44,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:45,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:49,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:49,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 608 [2020-10-14 02:40:49,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:40:49,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 02:40:49,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:49,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:49,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:49,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 277 [2020-10-14 02:40:49,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-14 02:40:49,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:49,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:40:49,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:49,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:49,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:49,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:40:49,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:49,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:40:49,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:49,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:49,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:49,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:49,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:49,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:49,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:40:49,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:49,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:49,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:49,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 02:40:49,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:49,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 02:40:49,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:49,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:49,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:49,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:49,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:49,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:49,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-14 02:40:49,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:49,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:50,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:50,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 02:40:50,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:50,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-14 02:40:50,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:50,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:50,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:40:50,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:50,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-14 02:40:50,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:50,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2020-10-14 02:40:50,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:50,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:50,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:50,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-14 02:40:50,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:50,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-14 02:40:50,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:50,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:50,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:50,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:40:50,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-14 02:40:50,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:50,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2020-10-14 02:40:50,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:50,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:50,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:50,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 02:40:50,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:50,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 02:40:50,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:50,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:50,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:50,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-14 02:40:50,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:50,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:50,515 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 516 proven. 89 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2020-10-14 02:40:50,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1499338898] [2020-10-14 02:40:50,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:40:50,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:40:50,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730276565] [2020-10-14 02:40:50,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:40:50,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:40:50,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:40:50,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:40:50,518 INFO L87 Difference]: Start difference. First operand 25589 states and 30281 transitions. Second operand 7 states. [2020-10-14 02:40:54,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:40:54,547 INFO L93 Difference]: Finished difference Result 53223 states and 65342 transitions. [2020-10-14 02:40:54,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 02:40:54,548 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 592 [2020-10-14 02:40:54,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:40:54,625 INFO L225 Difference]: With dead ends: 53223 [2020-10-14 02:40:54,626 INFO L226 Difference]: Without dead ends: 28020 [2020-10-14 02:40:54,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:40:54,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28020 states. [2020-10-14 02:40:55,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28020 to 27489. [2020-10-14 02:40:55,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27489 states. [2020-10-14 02:40:55,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27489 states to 27489 states and 31994 transitions. [2020-10-14 02:40:55,281 INFO L78 Accepts]: Start accepts. Automaton has 27489 states and 31994 transitions. Word has length 592 [2020-10-14 02:40:55,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:40:55,281 INFO L479 AbstractCegarLoop]: Abstraction has 27489 states and 31994 transitions. [2020-10-14 02:40:55,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:40:55,282 INFO L276 IsEmpty]: Start isEmpty. Operand 27489 states and 31994 transitions. [2020-10-14 02:40:55,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2020-10-14 02:40:55,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:40:55,334 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:40:55,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 02:40:55,335 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:40:55,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:40:55,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1751106528, now seen corresponding path program 1 times [2020-10-14 02:40:55,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:40:55,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1119901462] [2020-10-14 02:40:55,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:40:55,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:55,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:56,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:56,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:58,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:00,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:00,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 609 [2020-10-14 02:41:00,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:41:00,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5104 [2020-10-14 02:41:00,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:00,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:00,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 02:41:00,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 175 [2020-10-14 02:41:00,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 227 [2020-10-14 02:41:00,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:41:00,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:41:00,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:00,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:00,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:00,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:41:00,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:00,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:41:00,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:00,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:00,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:00,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:00,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:00,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:41:00,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:41:00,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:00,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:00,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:00,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-14 02:41:00,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:00,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-14 02:41:00,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:00,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:00,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:41:00,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:00,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-14 02:41:00,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:01,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-14 02:41:01,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:01,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:01,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:01,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 02:41:01,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:01,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 302 [2020-10-14 02:41:01,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:01,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:01,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 02:41:01,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:41:01,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 02:41:01,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:01,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-10-14 02:41:01,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:01,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:01,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:01,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:01,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:41:01,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:41:01,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-14 02:41:01,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:01,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:01,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:41:01,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:41:01,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 02:41:01,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:01,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2020-10-14 02:41:01,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:01,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:01,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:01,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:41:01,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:01,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 02:41:01,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:01,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:01,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:01,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 02:41:01,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:01,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:02,020 INFO L134 CoverageAnalysis]: Checked inductivity of 909 backedges. 550 proven. 219 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2020-10-14 02:41:02,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1119901462] [2020-10-14 02:41:02,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:41:02,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 02:41:02,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569449016] [2020-10-14 02:41:02,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 02:41:02,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:41:02,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 02:41:02,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-14 02:41:02,022 INFO L87 Difference]: Start difference. First operand 27489 states and 31994 transitions. Second operand 10 states. [2020-10-14 02:41:08,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:41:08,198 INFO L93 Difference]: Finished difference Result 63972 states and 77640 transitions. [2020-10-14 02:41:08,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 02:41:08,199 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 593 [2020-10-14 02:41:08,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:41:08,290 INFO L225 Difference]: With dead ends: 63972 [2020-10-14 02:41:08,291 INFO L226 Difference]: Without dead ends: 39019 [2020-10-14 02:41:08,323 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2020-10-14 02:41:08,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39019 states. [2020-10-14 02:41:09,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39019 to 37679. [2020-10-14 02:41:09,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37679 states. [2020-10-14 02:41:09,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37679 states to 37679 states and 43712 transitions. [2020-10-14 02:41:09,125 INFO L78 Accepts]: Start accepts. Automaton has 37679 states and 43712 transitions. Word has length 593 [2020-10-14 02:41:09,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:41:09,126 INFO L479 AbstractCegarLoop]: Abstraction has 37679 states and 43712 transitions. [2020-10-14 02:41:09,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 02:41:09,126 INFO L276 IsEmpty]: Start isEmpty. Operand 37679 states and 43712 transitions. [2020-10-14 02:41:09,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 720 [2020-10-14 02:41:09,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:41:09,186 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:41:09,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 02:41:09,186 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:41:09,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:41:09,187 INFO L82 PathProgramCache]: Analyzing trace with hash -2139249649, now seen corresponding path program 1 times [2020-10-14 02:41:09,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:41:09,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1230183029] [2020-10-14 02:41:09,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:41:09,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:09,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:10,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:11,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:14,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:14,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:14,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 737 [2020-10-14 02:41:14,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:41:14,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-14 02:41:14,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:14,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:14,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:41:14,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 281 [2020-10-14 02:41:14,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-14 02:41:14,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:14,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:41:14,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:14,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:14,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:14,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:41:14,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:14,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:41:14,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:14,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:14,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:14,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:14,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:14,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:14,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:41:14,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:14,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:14,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:14,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:41:14,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:14,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 02:41:14,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:14,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:14,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:14,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:14,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:14,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:14,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 02:41:14,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:14,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:14,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:14,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-14 02:41:14,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:14,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-14 02:41:14,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:14,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:14,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:41:14,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:14,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-14 02:41:14,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:14,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-14 02:41:14,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:14,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:14,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:14,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 02:41:14,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:14,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 02:41:14,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:14,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:14,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:41:14,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:41:14,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 02:41:14,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:14,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2020-10-14 02:41:14,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:14,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:14,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:14,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-14 02:41:14,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:14,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 02:41:14,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:14,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:14,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:14,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 167 [2020-10-14 02:41:14,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:14,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:14,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 569 [2020-10-14 02:41:14,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:15,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:15,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:15,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 02:41:15,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:15,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 02:41:15,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:15,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:15,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:15,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-14 02:41:15,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:15,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:15,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1430 backedges. 566 proven. 209 refuted. 0 times theorem prover too weak. 655 trivial. 0 not checked. [2020-10-14 02:41:15,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1230183029] [2020-10-14 02:41:15,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:41:15,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:41:15,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49106199] [2020-10-14 02:41:15,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:41:15,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:41:15,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:41:15,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:41:15,442 INFO L87 Difference]: Start difference. First operand 37679 states and 43712 transitions. Second operand 7 states. [2020-10-14 02:41:19,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:41:19,193 INFO L93 Difference]: Finished difference Result 75453 states and 90545 transitions. [2020-10-14 02:41:19,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 02:41:19,194 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 719 [2020-10-14 02:41:19,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:41:19,305 INFO L225 Difference]: With dead ends: 75453 [2020-10-14 02:41:19,305 INFO L226 Difference]: Without dead ends: 40310 [2020-10-14 02:41:19,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 02:41:19,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40310 states. [2020-10-14 02:41:20,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40310 to 38903. [2020-10-14 02:41:20,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38903 states. [2020-10-14 02:41:20,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38903 states to 38903 states and 44939 transitions. [2020-10-14 02:41:20,273 INFO L78 Accepts]: Start accepts. Automaton has 38903 states and 44939 transitions. Word has length 719 [2020-10-14 02:41:20,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:41:20,274 INFO L479 AbstractCegarLoop]: Abstraction has 38903 states and 44939 transitions. [2020-10-14 02:41:20,274 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:41:20,274 INFO L276 IsEmpty]: Start isEmpty. Operand 38903 states and 44939 transitions. [2020-10-14 02:41:20,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 917 [2020-10-14 02:41:20,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:41:20,330 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:41:20,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 02:41:20,330 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:41:20,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:41:20,331 INFO L82 PathProgramCache]: Analyzing trace with hash 543129217, now seen corresponding path program 1 times [2020-10-14 02:41:20,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:41:20,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1840232316] [2020-10-14 02:41:20,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:41:20,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:20,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:20,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:21,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:21,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:21,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:21,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:25,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:25,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:25,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 936 [2020-10-14 02:41:25,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 02:41:25,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 02:41:25,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:25,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:25,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:41:25,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 301 [2020-10-14 02:41:25,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 474 [2020-10-14 02:41:25,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:25,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:41:25,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:25,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:25,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:25,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:41:25,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:25,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:41:25,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:25,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:25,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:25,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:25,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:25,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:25,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:41:25,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:25,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:25,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:25,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:41:25,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:25,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 02:41:25,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:25,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:25,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:25,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:25,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:25,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:25,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 02:41:25,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:25,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:25,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:25,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:25,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-14 02:41:25,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:41:25,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-14 02:41:25,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:25,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:25,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:41:25,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:25,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-14 02:41:25,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:41:25,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-10-14 02:41:25,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:25,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:25,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:26,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:26,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-14 02:41:26,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:41:26,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-14 02:41:26,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:26,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:26,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:41:26,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:26,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-14 02:41:26,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:26,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-10-14 02:41:26,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:26,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:26,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:26,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:26,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 02:41:26,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:41:26,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 02:41:26,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:26,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:26,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:41:26,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:26,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 02:41:26,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:26,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 597 [2020-10-14 02:41:26,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:26,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:26,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:26,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-14 02:41:26,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:26,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 02:41:26,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:26,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:26,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:41:26,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 162 [2020-10-14 02:41:26,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 02:41:26,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:26,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 766 [2020-10-14 02:41:26,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:26,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:26,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:26,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 02:41:26,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:26,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 02:41:26,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:26,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:26,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:26,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-14 02:41:26,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:26,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:26,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2176 backedges. 415 proven. 10 refuted. 0 times theorem prover too weak. 1751 trivial. 0 not checked. [2020-10-14 02:41:26,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1840232316] [2020-10-14 02:41:26,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:41:26,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 02:41:26,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991067429] [2020-10-14 02:41:26,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 02:41:26,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:41:26,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 02:41:26,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:41:26,887 INFO L87 Difference]: Start difference. First operand 38903 states and 44939 transitions. Second operand 6 states. [2020-10-14 02:41:28,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:41:28,743 INFO L93 Difference]: Finished difference Result 73188 states and 84547 transitions. [2020-10-14 02:41:28,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:41:28,744 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 916 [2020-10-14 02:41:28,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:41:28,809 INFO L225 Difference]: With dead ends: 73188 [2020-10-14 02:41:28,810 INFO L226 Difference]: Without dead ends: 37211 [2020-10-14 02:41:28,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:41:28,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37211 states. [2020-10-14 02:41:29,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37211 to 37139. [2020-10-14 02:41:29,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37139 states. [2020-10-14 02:41:29,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37139 states to 37139 states and 42789 transitions. [2020-10-14 02:41:29,359 INFO L78 Accepts]: Start accepts. Automaton has 37139 states and 42789 transitions. Word has length 916 [2020-10-14 02:41:29,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:41:29,360 INFO L479 AbstractCegarLoop]: Abstraction has 37139 states and 42789 transitions. [2020-10-14 02:41:29,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 02:41:29,360 INFO L276 IsEmpty]: Start isEmpty. Operand 37139 states and 42789 transitions. [2020-10-14 02:41:29,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 933 [2020-10-14 02:41:29,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:41:29,402 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:41:29,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 02:41:29,402 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:41:29,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:41:29,403 INFO L82 PathProgramCache]: Analyzing trace with hash -186316557, now seen corresponding path program 1 times [2020-10-14 02:41:29,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:41:29,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1859538669] [2020-10-14 02:41:29,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:41:29,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:29,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:29,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:31,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:33,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:34,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:34,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 952 [2020-10-14 02:41:34,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:41:34,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 02:41:34,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:34,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:34,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:41:34,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 495 [2020-10-14 02:41:34,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-14 02:41:34,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:34,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:41:34,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:34,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:34,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:34,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:41:34,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:34,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:41:34,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:34,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:34,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:34,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:34,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:34,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:34,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:41:34,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:34,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:34,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:34,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:41:34,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:34,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 02:41:34,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:34,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:34,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:34,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:34,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:34,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:41:34,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 02:41:34,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:34,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:34,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:34,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 02:41:34,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:34,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 02:41:34,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:34,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:34,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:34,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:34,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:34,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:34,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-10-14 02:41:34,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:34,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:34,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:34,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-14 02:41:34,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:34,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-14 02:41:34,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:34,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:34,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:41:34,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:34,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-14 02:41:34,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:34,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2020-10-14 02:41:35,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:35,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:35,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:35,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 02:41:35,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:35,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-10-14 02:41:35,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:35,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:35,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:41:35,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:41:35,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 02:41:35,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:35,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 613 [2020-10-14 02:41:35,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:35,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:35,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:35,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-14 02:41:35,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:35,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-14 02:41:35,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:35,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:35,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:35,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 167 [2020-10-14 02:41:35,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:35,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:35,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 782 [2020-10-14 02:41:35,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:35,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:35,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:35,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 02:41:35,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:35,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 02:41:35,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:35,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:35,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:35,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-14 02:41:35,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:35,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:35,932 INFO L134 CoverageAnalysis]: Checked inductivity of 2202 backedges. 760 proven. 209 refuted. 0 times theorem prover too weak. 1233 trivial. 0 not checked. [2020-10-14 02:41:35,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1859538669] [2020-10-14 02:41:35,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:41:35,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:41:35,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914225198] [2020-10-14 02:41:35,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:41:35,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:41:35,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:41:35,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:41:35,935 INFO L87 Difference]: Start difference. First operand 37139 states and 42789 transitions. Second operand 7 states. [2020-10-14 02:41:38,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:41:38,257 INFO L93 Difference]: Finished difference Result 59149 states and 67603 transitions. [2020-10-14 02:41:38,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 02:41:38,258 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 932 [2020-10-14 02:41:38,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:41:38,259 INFO L225 Difference]: With dead ends: 59149 [2020-10-14 02:41:38,259 INFO L226 Difference]: Without dead ends: 0 [2020-10-14 02:41:38,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-14 02:41:38,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-14 02:41:38,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-14 02:41:38,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-14 02:41:38,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-14 02:41:38,310 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 932 [2020-10-14 02:41:38,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:41:38,310 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-14 02:41:38,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:41:38,310 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-14 02:41:38,310 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-14 02:41:38,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 02:41:38,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-14 02:41:39,234 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 92 [2020-10-14 02:41:46,269 WARN L193 SmtUtils]: Spent 5.75 s on a formula simplification. DAG size of input: 1519 DAG size of output: 1406 [2020-10-14 02:41:51,586 WARN L193 SmtUtils]: Spent 5.31 s on a formula simplification. DAG size of input: 1519 DAG size of output: 1406 [2020-10-14 02:41:51,754 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 37 [2020-10-14 02:41:56,895 WARN L193 SmtUtils]: Spent 5.10 s on a formula simplification. DAG size of input: 534 DAG size of output: 117 [2020-10-14 02:42:20,592 WARN L193 SmtUtils]: Spent 23.66 s on a formula simplification. DAG size of input: 1418 DAG size of output: 113