/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/Problem03_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 00:46:36,442 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 00:46:36,444 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 00:46:36,469 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 00:46:36,469 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 00:46:36,470 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 00:46:36,472 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 00:46:36,474 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 00:46:36,475 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 00:46:36,479 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 00:46:36,480 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 00:46:36,481 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 00:46:36,481 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 00:46:36,484 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 00:46:36,485 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 00:46:36,486 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 00:46:36,489 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 00:46:36,490 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 00:46:36,494 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 00:46:36,496 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 00:46:36,501 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 00:46:36,503 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 00:46:36,504 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 00:46:36,505 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 00:46:36,510 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 00:46:36,510 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 00:46:36,511 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 00:46:36,512 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 00:46:36,513 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 00:46:36,514 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 00:46:36,514 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 00:46:36,515 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 00:46:36,516 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 00:46:36,516 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 00:46:36,518 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 00:46:36,518 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 00:46:36,519 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 00:46:36,519 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 00:46:36,519 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 00:46:36,520 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 00:46:36,532 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 00:46:36,535 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 00:46:36,581 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 00:46:36,581 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 00:46:36,582 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 00:46:36,583 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 00:46:36,583 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 00:46:36,583 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 00:46:36,583 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 00:46:36,583 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 00:46:36,584 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 00:46:36,584 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 00:46:36,584 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 00:46:36,585 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 00:46:36,585 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 00:46:36,585 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 00:46:36,586 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 00:46:36,586 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 00:46:36,586 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 00:46:36,587 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 00:46:36,587 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 00:46:36,587 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 00:46:36,587 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 00:46:36,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 00:46:36,588 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 00:46:36,588 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 00:46:36,588 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 00:46:36,588 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 00:46:36,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 00:46:36,589 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 00:46:36,589 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 00:46:36,590 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 00:46:36,925 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 00:46:36,943 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 00:46:36,949 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 00:46:36,953 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 00:46:36,953 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 00:46:36,954 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label00.c [2020-10-14 00:46:37,016 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a3ea5dc3a/ce9c97c6a5364ed1a88b7357e14ddfc2/FLAGc29defc8d [2020-10-14 00:46:37,707 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 00:46:37,708 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label00.c [2020-10-14 00:46:37,724 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a3ea5dc3a/ce9c97c6a5364ed1a88b7357e14ddfc2/FLAGc29defc8d [2020-10-14 00:46:37,867 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a3ea5dc3a/ce9c97c6a5364ed1a88b7357e14ddfc2 [2020-10-14 00:46:37,876 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 00:46:37,878 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 00:46:37,880 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 00:46:37,880 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 00:46:37,885 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 00:46:37,886 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:46:37" (1/1) ... [2020-10-14 00:46:37,889 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50be01d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:46:37, skipping insertion in model container [2020-10-14 00:46:37,890 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:46:37" (1/1) ... [2020-10-14 00:46:37,899 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 00:46:37,974 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 00:46:38,765 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:46:38,771 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 00:46:39,101 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:46:39,126 INFO L208 MainTranslator]: Completed translation [2020-10-14 00:46:39,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:46:39 WrapperNode [2020-10-14 00:46:39,127 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 00:46:39,128 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 00:46:39,128 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 00:46:39,128 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 00:46:39,145 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:46:39" (1/1) ... [2020-10-14 00:46:39,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:46:39" (1/1) ... [2020-10-14 00:46:39,190 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:46:39" (1/1) ... [2020-10-14 00:46:39,190 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:46:39" (1/1) ... [2020-10-14 00:46:39,259 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:46:39" (1/1) ... [2020-10-14 00:46:39,276 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:46:39" (1/1) ... [2020-10-14 00:46:39,287 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:46:39" (1/1) ... [2020-10-14 00:46:39,308 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 00:46:39,309 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 00:46:39,309 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 00:46:39,309 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 00:46:39,310 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:46:39" (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 00:46:39,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 00:46:39,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 00:46:39,390 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 00:46:39,390 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 00:46:39,390 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 00:46:39,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 00:46:39,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 00:46:39,391 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 00:46:39,391 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 00:46:39,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 00:46:39,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 00:46:41,462 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 00:46:41,463 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 00:46:41,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:46:41 BoogieIcfgContainer [2020-10-14 00:46:41,477 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 00:46:41,481 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 00:46:41,481 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 00:46:41,484 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 00:46:41,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 12:46:37" (1/3) ... [2020-10-14 00:46:41,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a44bb5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:46:41, skipping insertion in model container [2020-10-14 00:46:41,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:46:39" (2/3) ... [2020-10-14 00:46:41,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a44bb5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:46:41, skipping insertion in model container [2020-10-14 00:46:41,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:46:41" (3/3) ... [2020-10-14 00:46:41,489 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label00.c [2020-10-14 00:46:41,500 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 00:46:41,511 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 00:46:41,525 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 00:46:41,555 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 00:46:41,556 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 00:46:41,557 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 00:46:41,557 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 00:46:41,557 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 00:46:41,557 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 00:46:41,557 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 00:46:41,557 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 00:46:41,591 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-14 00:46:41,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-10-14 00:46:41,609 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:46:41,611 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:46:41,611 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:46:41,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:46:41,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1862638405, now seen corresponding path program 1 times [2020-10-14 00:46:41,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:46:41,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2100442366] [2020-10-14 00:46:41,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:46:42,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:46:42,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:46:42,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:46:46,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:46:46,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-14 00:46:46,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:46:46,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4200 [2020-10-14 00:46:46,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:46:46,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:46:46,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 00:46:46,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:46:46,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-14 00:46:46,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 00:46:46,871 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:46:46,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:46:46,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:46:46,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:46:46,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:46:46,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:46:46,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:46:46,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 00:46:46,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:46:46,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:46:46,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:46:46,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:46:46,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:46:46,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:46:47,153 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 00:46:47,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2100442366] [2020-10-14 00:46:47,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:46:47,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 00:46:47,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855172250] [2020-10-14 00:46:47,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:46:47,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:46:47,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:46:47,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:46:47,185 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 5 states. [2020-10-14 00:46:47,412 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 00:46:47,895 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:46:52,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:46:52,066 INFO L93 Difference]: Finished difference Result 1093 states and 1952 transitions. [2020-10-14 00:46:52,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 00:46:52,068 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 198 [2020-10-14 00:46:52,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:46:52,090 INFO L225 Difference]: With dead ends: 1093 [2020-10-14 00:46:52,090 INFO L226 Difference]: Without dead ends: 685 [2020-10-14 00:46:52,100 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:46:52,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2020-10-14 00:46:52,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 677. [2020-10-14 00:46:52,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 677 states. [2020-10-14 00:46:52,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 1061 transitions. [2020-10-14 00:46:52,219 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 1061 transitions. Word has length 198 [2020-10-14 00:46:52,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:46:52,220 INFO L479 AbstractCegarLoop]: Abstraction has 677 states and 1061 transitions. [2020-10-14 00:46:52,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:46:52,221 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 1061 transitions. [2020-10-14 00:46:52,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-10-14 00:46:52,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:46:52,230 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:46:52,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 00:46:52,231 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:46:52,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:46:52,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1394096354, now seen corresponding path program 1 times [2020-10-14 00:46:52,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:46:52,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1149287099] [2020-10-14 00:46:52,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:46:52,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:46:52,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:46:52,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:46:53,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:46:55,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:46:55,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:46:55,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-14 00:46:55,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:46:55,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3192 [2020-10-14 00:46:55,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:46:55,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:46:55,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:46:55,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 00:46:55,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 197 [2020-10-14 00:46:55,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:46:55,738 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:46:55,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:46:55,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:46:55,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:46:55,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:46:55,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:46:55,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:46:55,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 00:46:55,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:46:55,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:46:55,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:46:55,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:46:55,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:46:55,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:46:55,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:46:55,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:46:55,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:46:55,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:46:55,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:46:55,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:46:55,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 00:46:55,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:46:55,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:46:55,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:46:55,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:46:55,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 00:46:55,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:46:56,035 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:46:56,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1149287099] [2020-10-14 00:46:56,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:46:56,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 00:46:56,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051556214] [2020-10-14 00:46:56,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 00:46:56,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:46:56,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 00:46:56,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:46:56,040 INFO L87 Difference]: Start difference. First operand 677 states and 1061 transitions. Second operand 6 states. [2020-10-14 00:46:56,475 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:46:57,374 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:47:00,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:47:00,474 INFO L93 Difference]: Finished difference Result 2433 states and 3919 transitions. [2020-10-14 00:47:00,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 00:47:00,476 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 207 [2020-10-14 00:47:00,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:47:00,501 INFO L225 Difference]: With dead ends: 2433 [2020-10-14 00:47:00,502 INFO L226 Difference]: Without dead ends: 1762 [2020-10-14 00:47:00,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:47:00,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1762 states. [2020-10-14 00:47:00,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1762 to 1728. [2020-10-14 00:47:00,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1728 states. [2020-10-14 00:47:00,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1728 states to 1728 states and 2673 transitions. [2020-10-14 00:47:00,617 INFO L78 Accepts]: Start accepts. Automaton has 1728 states and 2673 transitions. Word has length 207 [2020-10-14 00:47:00,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:47:00,619 INFO L479 AbstractCegarLoop]: Abstraction has 1728 states and 2673 transitions. [2020-10-14 00:47:00,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 00:47:00,619 INFO L276 IsEmpty]: Start isEmpty. Operand 1728 states and 2673 transitions. [2020-10-14 00:47:00,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-14 00:47:00,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:47:00,629 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:47:00,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 00:47:00,629 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:47:00,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:47:00,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1094558799, now seen corresponding path program 1 times [2020-10-14 00:47:00,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:47:00,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1928835930] [2020-10-14 00:47:00,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:47:00,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:00,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:00,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:02,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:03,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:03,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-14 00:47:03,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:47:03,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2876 [2020-10-14 00:47:03,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:03,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:03,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:47:03,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 00:47:03,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 197 [2020-10-14 00:47:03,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:03,871 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:47:03,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:47:03,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:03,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:03,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:03,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:47:03,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:03,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 00:47:03,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:03,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:03,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:47:03,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:03,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:47:03,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:03,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:47:03,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:03,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:03,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:03,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 00:47:03,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:03,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 00:47:03,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:03,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:03,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:47:03,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:03,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:47:03,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:04,074 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:47:04,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1928835930] [2020-10-14 00:47:04,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:47:04,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:47:04,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394889786] [2020-10-14 00:47:04,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:47:04,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:47:04,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:47:04,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:47:04,078 INFO L87 Difference]: Start difference. First operand 1728 states and 2673 transitions. Second operand 5 states. [2020-10-14 00:47:04,274 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-14 00:47:07,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:47:07,192 INFO L93 Difference]: Finished difference Result 5144 states and 8132 transitions. [2020-10-14 00:47:07,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:47:07,202 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 210 [2020-10-14 00:47:07,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:47:07,227 INFO L225 Difference]: With dead ends: 5144 [2020-10-14 00:47:07,227 INFO L226 Difference]: Without dead ends: 3422 [2020-10-14 00:47:07,232 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:47:07,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3422 states. [2020-10-14 00:47:07,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3422 to 3400. [2020-10-14 00:47:07,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3400 states. [2020-10-14 00:47:07,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3400 states to 3400 states and 5236 transitions. [2020-10-14 00:47:07,360 INFO L78 Accepts]: Start accepts. Automaton has 3400 states and 5236 transitions. Word has length 210 [2020-10-14 00:47:07,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:47:07,361 INFO L479 AbstractCegarLoop]: Abstraction has 3400 states and 5236 transitions. [2020-10-14 00:47:07,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:47:07,361 INFO L276 IsEmpty]: Start isEmpty. Operand 3400 states and 5236 transitions. [2020-10-14 00:47:07,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-14 00:47:07,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:47:07,372 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:47:07,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 00:47:07,373 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:47:07,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:47:07,373 INFO L82 PathProgramCache]: Analyzing trace with hash 944450125, now seen corresponding path program 1 times [2020-10-14 00:47:07,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:47:07,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [906069424] [2020-10-14 00:47:07,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:47:07,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:07,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:07,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:09,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:10,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:10,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-14 00:47:10,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:47:10,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2858 [2020-10-14 00:47:10,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:10,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:10,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:47:10,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 00:47:10,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 197 [2020-10-14 00:47:10,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:10,645 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:47:10,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:47:10,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:10,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:10,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:10,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:47:10,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:10,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:47:10,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:10,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:10,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:47:10,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:10,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:47:10,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:10,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:47:10,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:10,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:10,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:10,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 00:47:10,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:10,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 00:47:10,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:10,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:10,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:47:10,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:10,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 00:47:10,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:10,863 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:47:10,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [906069424] [2020-10-14 00:47:10,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:47:10,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:47:10,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646114586] [2020-10-14 00:47:10,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:47:10,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:47:10,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:47:10,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:47:10,867 INFO L87 Difference]: Start difference. First operand 3400 states and 5236 transitions. Second operand 5 states. [2020-10-14 00:47:11,077 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:47:13,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:47:13,739 INFO L93 Difference]: Finished difference Result 9953 states and 15708 transitions. [2020-10-14 00:47:13,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:47:13,740 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 212 [2020-10-14 00:47:13,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:47:13,781 INFO L225 Difference]: With dead ends: 9953 [2020-10-14 00:47:13,781 INFO L226 Difference]: Without dead ends: 6559 [2020-10-14 00:47:13,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:47:13,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6559 states. [2020-10-14 00:47:14,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6559 to 6554. [2020-10-14 00:47:14,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6554 states. [2020-10-14 00:47:14,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6554 states to 6554 states and 9946 transitions. [2020-10-14 00:47:14,043 INFO L78 Accepts]: Start accepts. Automaton has 6554 states and 9946 transitions. Word has length 212 [2020-10-14 00:47:14,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:47:14,043 INFO L479 AbstractCegarLoop]: Abstraction has 6554 states and 9946 transitions. [2020-10-14 00:47:14,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:47:14,044 INFO L276 IsEmpty]: Start isEmpty. Operand 6554 states and 9946 transitions. [2020-10-14 00:47:14,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-10-14 00:47:14,117 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:47:14,118 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:47:14,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 00:47:14,118 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:47:14,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:47:14,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1851829785, now seen corresponding path program 1 times [2020-10-14 00:47:14,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:47:14,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2097514104] [2020-10-14 00:47:14,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:47:14,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:14,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:14,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:15,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:16,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:18,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:19,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:19,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-10-14 00:47:19,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:47:19,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-14 00:47:19,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:19,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:19,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:47:19,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-14 00:47:19,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 197 [2020-10-14 00:47:19,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:19,404 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:47:19,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:47:19,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:19,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:19,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:19,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:47:19,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:19,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:47:19,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:19,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:19,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:47:19,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:19,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:47:19,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:19,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:47:19,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:19,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:19,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:19,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:47:19,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:19,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:47:19,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:19,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:19,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:47:19,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:19,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:47:19,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:47:19,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 00:47:19,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:19,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:19,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:19,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 00:47:19,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:19,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 00:47:19,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:19,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:19,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:47:19,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:19,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 00:47:19,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:19,661 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 00:47:19,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2097514104] [2020-10-14 00:47:19,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:47:19,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:47:19,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551079205] [2020-10-14 00:47:19,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:47:19,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:47:19,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:47:19,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:47:19,663 INFO L87 Difference]: Start difference. First operand 6554 states and 9946 transitions. Second operand 5 states. [2020-10-14 00:47:19,924 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:47:22,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:47:22,852 INFO L93 Difference]: Finished difference Result 18564 states and 28997 transitions. [2020-10-14 00:47:22,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:47:22,853 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 235 [2020-10-14 00:47:22,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:47:22,932 INFO L225 Difference]: With dead ends: 18564 [2020-10-14 00:47:22,932 INFO L226 Difference]: Without dead ends: 12016 [2020-10-14 00:47:22,953 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:47:22,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12016 states. [2020-10-14 00:47:23,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12016 to 11370. [2020-10-14 00:47:23,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11370 states. [2020-10-14 00:47:23,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11370 states to 11370 states and 17450 transitions. [2020-10-14 00:47:23,391 INFO L78 Accepts]: Start accepts. Automaton has 11370 states and 17450 transitions. Word has length 235 [2020-10-14 00:47:23,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:47:23,392 INFO L479 AbstractCegarLoop]: Abstraction has 11370 states and 17450 transitions. [2020-10-14 00:47:23,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:47:23,392 INFO L276 IsEmpty]: Start isEmpty. Operand 11370 states and 17450 transitions. [2020-10-14 00:47:23,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-10-14 00:47:23,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:47:23,432 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:47:23,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 00:47:23,433 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:47:23,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:47:23,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1587883555, now seen corresponding path program 1 times [2020-10-14 00:47:23,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:47:23,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [338546696] [2020-10-14 00:47:23,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:47:23,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:23,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:23,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:24,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:25,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:26,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:26,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:26,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-14 00:47:26,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:47:26,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3523 [2020-10-14 00:47:26,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:27,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:27,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:47:27,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 00:47:27,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 00:47:27,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:47:27,158 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:47:27,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:47:27,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:27,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:27,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:27,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:47:27,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:27,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:47:27,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:27,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:27,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:47:27,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:27,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:47:27,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:47:27,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:47:27,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:27,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:27,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:27,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:47:27,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:27,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 00:47:27,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:27,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:27,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:47:27,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:27,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 00:47:27,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:47:27,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 00:47:27,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:27,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:27,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:27,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 00:47:27,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:27,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-14 00:47:27,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:27,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:27,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:47:27,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:47:27,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 00:47:27,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:47:27,531 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 00:47:27,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [338546696] [2020-10-14 00:47:27,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:47:27,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:47:27,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394373128] [2020-10-14 00:47:27,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:47:27,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:47:27,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:47:27,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:47:27,534 INFO L87 Difference]: Start difference. First operand 11370 states and 17450 transitions. Second operand 7 states. [2020-10-14 00:47:27,688 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:47:29,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:47:29,525 INFO L93 Difference]: Finished difference Result 22711 states and 35110 transitions. [2020-10-14 00:47:29,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 00:47:29,525 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 250 [2020-10-14 00:47:29,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:47:29,571 INFO L225 Difference]: With dead ends: 22711 [2020-10-14 00:47:29,572 INFO L226 Difference]: Without dead ends: 11347 [2020-10-14 00:47:29,600 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-14 00:47:29,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11347 states. [2020-10-14 00:47:29,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11347 to 11343. [2020-10-14 00:47:29,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11343 states. [2020-10-14 00:47:29,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11343 states to 11343 states and 17109 transitions. [2020-10-14 00:47:29,990 INFO L78 Accepts]: Start accepts. Automaton has 11343 states and 17109 transitions. Word has length 250 [2020-10-14 00:47:29,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:47:29,991 INFO L479 AbstractCegarLoop]: Abstraction has 11343 states and 17109 transitions. [2020-10-14 00:47:29,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:47:29,992 INFO L276 IsEmpty]: Start isEmpty. Operand 11343 states and 17109 transitions. [2020-10-14 00:47:30,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-10-14 00:47:30,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:47:30,034 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, 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:47:30,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 00:47:30,034 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:47:30,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:47:30,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1036187343, now seen corresponding path program 1 times [2020-10-14 00:47:30,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:47:30,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [362915792] [2020-10-14 00:47:30,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:47:30,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:30,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:30,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:32,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:32,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 294 [2020-10-14 00:47:32,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:47:32,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2779 [2020-10-14 00:47:32,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:32,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:32,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:47:32,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-14 00:47:32,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 197 [2020-10-14 00:47:32,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:47:33,167 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:47:33,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:47:33,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:33,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:33,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:33,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:47:33,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:33,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:47:33,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:33,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:33,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:47:33,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:33,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:47:33,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:47:33,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:47:33,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:33,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:33,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:33,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 00:47:33,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:33,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-14 00:47:33,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:33,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:33,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:47:33,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:33,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 00:47:33,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:47:33,473 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 82 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:47:33,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [362915792] [2020-10-14 00:47:33,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:47:33,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:47:33,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130385540] [2020-10-14 00:47:33,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:47:33,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:47:33,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:47:33,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:47:33,475 INFO L87 Difference]: Start difference. First operand 11343 states and 17109 transitions. Second operand 5 states. [2020-10-14 00:47:33,637 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:47:35,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:47:35,968 INFO L93 Difference]: Finished difference Result 32331 states and 50017 transitions. [2020-10-14 00:47:35,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:47:35,969 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 284 [2020-10-14 00:47:35,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:47:36,067 INFO L225 Difference]: With dead ends: 32331 [2020-10-14 00:47:36,068 INFO L226 Difference]: Without dead ends: 20994 [2020-10-14 00:47:36,101 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:47:36,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20994 states. [2020-10-14 00:47:36,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20994 to 19950. [2020-10-14 00:47:36,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19950 states. [2020-10-14 00:47:36,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19950 states to 19950 states and 29558 transitions. [2020-10-14 00:47:36,889 INFO L78 Accepts]: Start accepts. Automaton has 19950 states and 29558 transitions. Word has length 284 [2020-10-14 00:47:36,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:47:36,890 INFO L479 AbstractCegarLoop]: Abstraction has 19950 states and 29558 transitions. [2020-10-14 00:47:36,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:47:36,890 INFO L276 IsEmpty]: Start isEmpty. Operand 19950 states and 29558 transitions. [2020-10-14 00:47:36,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-10-14 00:47:36,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:47:36,964 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:47:36,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 00:47:36,965 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:47:36,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:47:36,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1888683979, now seen corresponding path program 1 times [2020-10-14 00:47:36,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:47:36,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [820204083] [2020-10-14 00:47:36,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:47:37,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:37,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:37,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:40,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:40,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-10-14 00:47:40,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:47:40,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3388 [2020-10-14 00:47:40,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:40,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:40,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 00:47:40,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:47:40,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 00:47:40,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:47:40,664 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:47:40,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:47:40,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:40,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:40,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:40,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:47:40,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:40,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 00:47:40,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:40,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:40,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:47:40,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:40,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:47:40,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:47:40,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:47:40,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:40,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:41,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:41,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 00:47:41,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:41,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-14 00:47:41,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:41,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:41,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:47:41,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:47:41,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 00:47:41,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:47:41,509 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:47:41,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [820204083] [2020-10-14 00:47:41,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:47:41,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 00:47:41,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425700412] [2020-10-14 00:47:41,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:47:41,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:47:41,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:47:41,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:47:41,513 INFO L87 Difference]: Start difference. First operand 19950 states and 29558 transitions. Second operand 7 states. [2020-10-14 00:47:41,682 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:47:42,555 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 00:47:44,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:47:44,569 INFO L93 Difference]: Finished difference Result 43173 states and 64065 transitions. [2020-10-14 00:47:44,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 00:47:44,570 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 317 [2020-10-14 00:47:44,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:47:44,690 INFO L225 Difference]: With dead ends: 43173 [2020-10-14 00:47:44,691 INFO L226 Difference]: Without dead ends: 23229 [2020-10-14 00:47:44,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-14 00:47:44,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23229 states. [2020-10-14 00:47:45,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23229 to 22767. [2020-10-14 00:47:45,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22767 states. [2020-10-14 00:47:45,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22767 states to 22767 states and 33766 transitions. [2020-10-14 00:47:45,365 INFO L78 Accepts]: Start accepts. Automaton has 22767 states and 33766 transitions. Word has length 317 [2020-10-14 00:47:45,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:47:45,365 INFO L479 AbstractCegarLoop]: Abstraction has 22767 states and 33766 transitions. [2020-10-14 00:47:45,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:47:45,366 INFO L276 IsEmpty]: Start isEmpty. Operand 22767 states and 33766 transitions. [2020-10-14 00:47:45,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-10-14 00:47:45,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:47:45,410 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 00:47:45,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 00:47:45,410 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:47:45,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:47:45,411 INFO L82 PathProgramCache]: Analyzing trace with hash 2023593061, now seen corresponding path program 1 times [2020-10-14 00:47:45,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:47:45,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1646407058] [2020-10-14 00:47:45,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:47:45,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:45,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:45,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:48,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:49,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:50,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:50,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 339 [2020-10-14 00:47:50,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:47:50,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4625 [2020-10-14 00:47:50,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:50,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:50,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:47:50,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 00:47:50,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-14 00:47:50,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:47:50,232 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:47:50,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:47:50,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:50,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:50,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:50,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:47:50,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:50,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:47:50,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:50,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:50,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:47:50,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:50,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:47:50,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:47:50,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:47:50,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:50,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:50,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:50,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:47:50,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:50,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 00:47:50,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:50,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:50,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:47:50,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:50,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 00:47:50,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:47:50,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 00:47:50,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:50,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:50,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:50,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 00:47:50,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:50,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-14 00:47:50,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:50,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:50,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:47:50,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:47:50,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 00:47:50,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:47:50,730 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 130 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 00:47:50,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1646407058] [2020-10-14 00:47:50,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:47:50,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:47:50,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135346859] [2020-10-14 00:47:50,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:47:50,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:47:50,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:47:50,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:47:50,733 INFO L87 Difference]: Start difference. First operand 22767 states and 33766 transitions. Second operand 7 states. [2020-10-14 00:47:51,008 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:47:52,233 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:47:54,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:47:54,277 INFO L93 Difference]: Finished difference Result 47190 states and 76588 transitions. [2020-10-14 00:47:54,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:47:54,278 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 327 [2020-10-14 00:47:54,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:47:54,435 INFO L225 Difference]: With dead ends: 47190 [2020-10-14 00:47:54,435 INFO L226 Difference]: Without dead ends: 24636 [2020-10-14 00:47:54,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:47:54,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24636 states. [2020-10-14 00:47:55,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24636 to 22403. [2020-10-14 00:47:55,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22403 states. [2020-10-14 00:47:55,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22403 states to 22403 states and 31981 transitions. [2020-10-14 00:47:55,282 INFO L78 Accepts]: Start accepts. Automaton has 22403 states and 31981 transitions. Word has length 327 [2020-10-14 00:47:55,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:47:55,283 INFO L479 AbstractCegarLoop]: Abstraction has 22403 states and 31981 transitions. [2020-10-14 00:47:55,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:47:55,283 INFO L276 IsEmpty]: Start isEmpty. Operand 22403 states and 31981 transitions. [2020-10-14 00:47:55,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-10-14 00:47:55,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:47:55,329 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 00:47:55,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 00:47:55,329 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:47:55,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:47:55,330 INFO L82 PathProgramCache]: Analyzing trace with hash -567183716, now seen corresponding path program 1 times [2020-10-14 00:47:55,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:47:55,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1964454480] [2020-10-14 00:47:55,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:47:55,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:55,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:56,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:56,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 340 [2020-10-14 00:47:56,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:56,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1332 [2020-10-14 00:47:56,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:56,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:56,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 00:47:56,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:47:56,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 00:47:56,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:47:57,002 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:47:57,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:47:57,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:57,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:57,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:57,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:47:57,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:57,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 00:47:57,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:57,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:57,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:47:57,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:57,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:47:57,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:47:57,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:47:57,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:57,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:57,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:57,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 00:47:57,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:57,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 00:47:57,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:57,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:57,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:47:57,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:47:57,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 00:47:57,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:47:57,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 00:47:57,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:57,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:57,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:57,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 00:47:57,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:57,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 303 [2020-10-14 00:47:57,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:57,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:57,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:47:57,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:47:57,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 00:47:57,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:47:58,009 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 125 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 00:47:58,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1964454480] [2020-10-14 00:47:58,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:47:58,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 00:47:58,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625933144] [2020-10-14 00:47:58,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 00:47:58,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:47:58,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 00:47:58,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-14 00:47:58,015 INFO L87 Difference]: Start difference. First operand 22403 states and 31981 transitions. Second operand 9 states. [2020-10-14 00:47:58,188 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 00:47:59,366 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 00:48:01,090 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 00:48:02,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:48:02,701 INFO L93 Difference]: Finished difference Result 54978 states and 79041 transitions. [2020-10-14 00:48:02,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 00:48:02,702 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 328 [2020-10-14 00:48:02,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:48:02,824 INFO L225 Difference]: With dead ends: 54978 [2020-10-14 00:48:02,824 INFO L226 Difference]: Without dead ends: 32792 [2020-10-14 00:48:02,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2020-10-14 00:48:02,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32792 states. [2020-10-14 00:48:03,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32792 to 32509. [2020-10-14 00:48:03,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32509 states. [2020-10-14 00:48:03,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32509 states to 32509 states and 46623 transitions. [2020-10-14 00:48:03,633 INFO L78 Accepts]: Start accepts. Automaton has 32509 states and 46623 transitions. Word has length 328 [2020-10-14 00:48:03,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:48:03,633 INFO L479 AbstractCegarLoop]: Abstraction has 32509 states and 46623 transitions. [2020-10-14 00:48:03,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 00:48:03,633 INFO L276 IsEmpty]: Start isEmpty. Operand 32509 states and 46623 transitions. [2020-10-14 00:48:03,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2020-10-14 00:48:03,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:48:03,691 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 00:48:03,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 00:48:03,691 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:48:03,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:48:03,692 INFO L82 PathProgramCache]: Analyzing trace with hash 324722744, now seen corresponding path program 1 times [2020-10-14 00:48:03,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:48:03,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1054851840] [2020-10-14 00:48:03,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:48:03,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:03,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:03,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:05,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:08,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:08,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:08,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 381 [2020-10-14 00:48:08,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:48:08,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-14 00:48:08,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:08,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:08,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:48:08,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 00:48:08,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 00:48:08,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:08,920 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:48:08,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:48:08,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:08,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:08,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:08,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:48:08,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:08,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:48:08,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:08,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:08,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:48:08,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:08,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:48:08,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:48:09,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:48:09,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:09,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:09,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:09,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 00:48:09,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:09,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 00:48:09,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:09,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:09,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:48:09,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:09,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:48:09,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:09,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 00:48:09,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:09,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:09,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:09,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 00:48:09,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:09,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 00:48:09,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:09,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:09,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:48:09,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:48:09,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 00:48:09,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:09,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 00:48:09,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:09,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:09,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:09,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 00:48:09,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:09,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 00:48:09,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:09,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:09,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:48:09,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 117 [2020-10-14 00:48:09,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:48:09,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:09,411 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 173 proven. 37 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 00:48:09,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1054851840] [2020-10-14 00:48:09,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:48:09,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:48:09,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383473039] [2020-10-14 00:48:09,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:48:09,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:48:09,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:48:09,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:48:09,414 INFO L87 Difference]: Start difference. First operand 32509 states and 46623 transitions. Second operand 7 states. [2020-10-14 00:48:09,742 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:48:10,853 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 00:48:13,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:48:13,116 INFO L93 Difference]: Finished difference Result 59942 states and 92771 transitions. [2020-10-14 00:48:13,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:48:13,116 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 367 [2020-10-14 00:48:13,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:48:13,265 INFO L225 Difference]: With dead ends: 59942 [2020-10-14 00:48:13,266 INFO L226 Difference]: Without dead ends: 27650 [2020-10-14 00:48:13,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:48:13,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27650 states. [2020-10-14 00:48:14,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27650 to 26858. [2020-10-14 00:48:14,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26858 states. [2020-10-14 00:48:14,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26858 states to 26858 states and 37166 transitions. [2020-10-14 00:48:14,450 INFO L78 Accepts]: Start accepts. Automaton has 26858 states and 37166 transitions. Word has length 367 [2020-10-14 00:48:14,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:48:14,451 INFO L479 AbstractCegarLoop]: Abstraction has 26858 states and 37166 transitions. [2020-10-14 00:48:14,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:48:14,451 INFO L276 IsEmpty]: Start isEmpty. Operand 26858 states and 37166 transitions. [2020-10-14 00:48:14,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2020-10-14 00:48:14,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:48:14,499 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 00:48:14,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 00:48:14,500 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:48:14,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:48:14,500 INFO L82 PathProgramCache]: Analyzing trace with hash 598808795, now seen corresponding path program 1 times [2020-10-14 00:48:14,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:48:14,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [878339423] [2020-10-14 00:48:14,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:48:14,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:14,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:14,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:15,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:18,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:19,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:19,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 388 [2020-10-14 00:48:19,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:48:19,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 00:48:19,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:19,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:19,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:48:19,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 00:48:19,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 00:48:19,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:19,750 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:48:19,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:48:19,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:19,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:19,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:19,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:48:19,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:19,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:48:19,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:19,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:19,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:48:19,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:19,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:48:19,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:19,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:48:19,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:19,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:19,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:19,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 00:48:19,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:19,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 00:48:19,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:19,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:19,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:48:19,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:19,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 00:48:19,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:19,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 00:48:19,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:19,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:19,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:19,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 00:48:19,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:19,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 00:48:19,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:19,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:19,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:48:19,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:48:19,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 00:48:19,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:19,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-14 00:48:20,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:20,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:20,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:20,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 00:48:20,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:20,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 00:48:20,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:20,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:20,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:48:20,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 117 [2020-10-14 00:48:20,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:48:20,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:20,245 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 187 proven. 37 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-14 00:48:20,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [878339423] [2020-10-14 00:48:20,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:48:20,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:48:20,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948883317] [2020-10-14 00:48:20,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:48:20,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:48:20,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:48:20,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:48:20,248 INFO L87 Difference]: Start difference. First operand 26858 states and 37166 transitions. Second operand 7 states. [2020-10-14 00:48:20,570 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 00:48:22,464 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 00:48:25,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:48:25,035 INFO L93 Difference]: Finished difference Result 57825 states and 85162 transitions. [2020-10-14 00:48:25,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:48:25,036 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 374 [2020-10-14 00:48:25,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:48:25,125 INFO L225 Difference]: With dead ends: 57825 [2020-10-14 00:48:25,125 INFO L226 Difference]: Without dead ends: 31184 [2020-10-14 00:48:25,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:48:25,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31184 states. [2020-10-14 00:48:25,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31184 to 30581. [2020-10-14 00:48:25,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30581 states. [2020-10-14 00:48:25,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30581 states to 30581 states and 41571 transitions. [2020-10-14 00:48:25,927 INFO L78 Accepts]: Start accepts. Automaton has 30581 states and 41571 transitions. Word has length 374 [2020-10-14 00:48:25,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:48:25,927 INFO L479 AbstractCegarLoop]: Abstraction has 30581 states and 41571 transitions. [2020-10-14 00:48:25,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:48:25,928 INFO L276 IsEmpty]: Start isEmpty. Operand 30581 states and 41571 transitions. [2020-10-14 00:48:25,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2020-10-14 00:48:25,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:48:26,000 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 00:48:26,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 00:48:26,000 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:48:26,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:48:26,001 INFO L82 PathProgramCache]: Analyzing trace with hash -463004413, now seen corresponding path program 1 times [2020-10-14 00:48:26,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:48:26,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626771819] [2020-10-14 00:48:26,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:48:26,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:26,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:26,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:26,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:30,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:31,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:31,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 392 [2020-10-14 00:48:31,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:48:31,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-14 00:48:31,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:31,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:31,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:48:31,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 00:48:31,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 00:48:31,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:31,275 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:48:31,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:48:31,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:31,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:31,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:31,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:48:31,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:31,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:48:31,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:31,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:31,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:48:31,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:31,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:48:31,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:31,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:48:31,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:31,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:31,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:31,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 00:48:31,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:31,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 00:48:31,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:31,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:31,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:48:31,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:31,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 00:48:31,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:31,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 00:48:31,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:31,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:31,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:31,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 00:48:31,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:31,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-14 00:48:31,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:31,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:31,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:48:31,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:48:31,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 00:48:31,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:31,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-14 00:48:31,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:31,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:31,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:31,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 00:48:31,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:31,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 00:48:31,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:31,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:31,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:48:31,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 117 [2020-10-14 00:48:31,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:48:31,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:32,704 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 195 proven. 37 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-14 00:48:32,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626771819] [2020-10-14 00:48:32,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:48:32,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 00:48:32,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818547136] [2020-10-14 00:48:32,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 00:48:32,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:48:32,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 00:48:32,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:48:32,707 INFO L87 Difference]: Start difference. First operand 30581 states and 41571 transitions. Second operand 8 states. [2020-10-14 00:48:32,973 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:48:33,234 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:48:35,769 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:48:38,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:48:38,148 INFO L93 Difference]: Finished difference Result 93314 states and 142670 transitions. [2020-10-14 00:48:38,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 00:48:38,148 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 378 [2020-10-14 00:48:38,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:48:38,536 INFO L225 Difference]: With dead ends: 93314 [2020-10-14 00:48:38,536 INFO L226 Difference]: Without dead ends: 63655 [2020-10-14 00:48:38,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-14 00:48:38,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63655 states. [2020-10-14 00:48:40,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63655 to 61667. [2020-10-14 00:48:40,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61667 states. [2020-10-14 00:48:40,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61667 states to 61667 states and 80799 transitions. [2020-10-14 00:48:40,833 INFO L78 Accepts]: Start accepts. Automaton has 61667 states and 80799 transitions. Word has length 378 [2020-10-14 00:48:40,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:48:40,833 INFO L479 AbstractCegarLoop]: Abstraction has 61667 states and 80799 transitions. [2020-10-14 00:48:40,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 00:48:40,833 INFO L276 IsEmpty]: Start isEmpty. Operand 61667 states and 80799 transitions. [2020-10-14 00:48:40,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2020-10-14 00:48:40,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:48:40,939 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:48:40,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 00:48:40,940 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:48:40,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:48:40,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1901300794, now seen corresponding path program 1 times [2020-10-14 00:48:40,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:48:40,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [60474255] [2020-10-14 00:48:40,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:48:40,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:41,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:41,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:41,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:41,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:45,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:46,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:46,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 420 [2020-10-14 00:48:46,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:48:46,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5064 [2020-10-14 00:48:46,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:46,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:46,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 00:48:46,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 00:48:46,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 194 [2020-10-14 00:48:46,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:46,291 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:48:46,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:48:46,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:46,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:46,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:46,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:48:46,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:46,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:48:46,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:46,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:46,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:48:46,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:46,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:48:46,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:46,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:48:46,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:46,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:46,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:46,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 00:48:46,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:46,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 00:48:46,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:46,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:46,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:48:46,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:46,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 00:48:46,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:46,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 00:48:46,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:46,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:46,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:46,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:46,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 00:48:46,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:48:46,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 00:48:46,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:46,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:46,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:48:46,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:46,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 00:48:46,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:46,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 00:48:46,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:46,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:46,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:46,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 00:48:46,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:46,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 00:48:46,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:46,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:46,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:48:46,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:48:46,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 00:48:46,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:46,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 00:48:46,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:46,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:46,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:46,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 00:48:46,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:46,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-14 00:48:46,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:46,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:46,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:48:46,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:48:46,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 00:48:46,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:47,063 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 276 proven. 10 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-14 00:48:47,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [60474255] [2020-10-14 00:48:47,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:48:47,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:48:47,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904932088] [2020-10-14 00:48:47,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:48:47,064 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:48:47,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:48:47,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:48:47,065 INFO L87 Difference]: Start difference. First operand 61667 states and 80799 transitions. Second operand 7 states. [2020-10-14 00:48:47,365 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:48:47,524 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:48:52,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:48:52,379 INFO L93 Difference]: Finished difference Result 138080 states and 194259 transitions. [2020-10-14 00:48:52,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:48:52,380 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 404 [2020-10-14 00:48:52,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:48:52,642 INFO L225 Difference]: With dead ends: 138080 [2020-10-14 00:48:52,642 INFO L226 Difference]: Without dead ends: 77341 [2020-10-14 00:48:52,715 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:48:52,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77341 states. [2020-10-14 00:48:54,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77341 to 73446. [2020-10-14 00:48:54,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73446 states. [2020-10-14 00:48:54,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73446 states to 73446 states and 95301 transitions. [2020-10-14 00:48:54,353 INFO L78 Accepts]: Start accepts. Automaton has 73446 states and 95301 transitions. Word has length 404 [2020-10-14 00:48:54,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:48:54,354 INFO L479 AbstractCegarLoop]: Abstraction has 73446 states and 95301 transitions. [2020-10-14 00:48:54,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:48:54,354 INFO L276 IsEmpty]: Start isEmpty. Operand 73446 states and 95301 transitions. [2020-10-14 00:48:54,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2020-10-14 00:48:54,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:48:54,445 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, 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, 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] [2020-10-14 00:48:54,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 00:48:54,445 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:48:54,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:48:54,446 INFO L82 PathProgramCache]: Analyzing trace with hash 934878474, now seen corresponding path program 1 times [2020-10-14 00:48:54,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:48:54,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [703631011] [2020-10-14 00:48:54,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:48:54,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:54,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:54,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:56,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:57,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:58,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:58,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:58,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 424 [2020-10-14 00:48:58,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:48:58,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4262 [2020-10-14 00:48:58,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:58,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:58,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:48:58,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 00:48:58,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-14 00:48:58,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:58,982 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:48:58,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:48:58,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:58,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:58,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:58,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:48:58,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:58,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:48:58,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:58,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:58,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:48:58,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:58,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:48:58,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:59,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:48:59,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:59,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:59,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:59,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 00:48:59,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:59,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 00:48:59,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:59,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:59,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:48:59,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:59,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:48:59,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:59,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 00:48:59,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:59,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:59,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:59,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 00:48:59,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:59,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 00:48:59,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:59,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:59,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:48:59,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:59,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 00:48:59,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:59,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 00:48:59,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:59,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:59,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:59,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 00:48:59,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:59,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-14 00:48:59,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:59,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:59,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:48:59,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:48:59,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 00:48:59,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:01,213 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 295 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-14 00:49:01,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [703631011] [2020-10-14 00:49:01,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:49:01,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:49:01,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188233303] [2020-10-14 00:49:01,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:49:01,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:49:01,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:49:01,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:49:01,215 INFO L87 Difference]: Start difference. First operand 73446 states and 95301 transitions. Second operand 7 states. [2020-10-14 00:49:01,550 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:49:01,815 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:49:05,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:49:05,482 INFO L93 Difference]: Finished difference Result 141846 states and 199414 transitions. [2020-10-14 00:49:05,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:49:05,482 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 410 [2020-10-14 00:49:05,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:49:05,719 INFO L225 Difference]: With dead ends: 141846 [2020-10-14 00:49:05,719 INFO L226 Difference]: Without dead ends: 71473 [2020-10-14 00:49:05,806 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:49:05,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71473 states. [2020-10-14 00:49:07,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71473 to 68659. [2020-10-14 00:49:07,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68659 states. [2020-10-14 00:49:07,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68659 states to 68659 states and 84943 transitions. [2020-10-14 00:49:07,161 INFO L78 Accepts]: Start accepts. Automaton has 68659 states and 84943 transitions. Word has length 410 [2020-10-14 00:49:07,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:49:07,162 INFO L479 AbstractCegarLoop]: Abstraction has 68659 states and 84943 transitions. [2020-10-14 00:49:07,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:49:07,162 INFO L276 IsEmpty]: Start isEmpty. Operand 68659 states and 84943 transitions. [2020-10-14 00:49:07,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2020-10-14 00:49:07,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:49:07,240 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:49:07,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 00:49:07,240 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:49:07,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:49:07,241 INFO L82 PathProgramCache]: Analyzing trace with hash 148238154, now seen corresponding path program 1 times [2020-10-14 00:49:07,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:49:07,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1432013759] [2020-10-14 00:49:07,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:49:07,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:07,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:07,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:08,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:12,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:12,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 447 [2020-10-14 00:49:12,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:49:12,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 00:49:12,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:12,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:12,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 00:49:12,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-14 00:49:12,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-14 00:49:12,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:12,733 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:49:12,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:49:12,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:12,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:12,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:12,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:49:12,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:12,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:49:12,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:12,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:12,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:49:12,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:49:12,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:49:12,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:12,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:49:12,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:12,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:12,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:12,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 00:49:12,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:12,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-14 00:49:12,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:12,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:12,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:49:12,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:49:12,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 00:49:12,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:12,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 00:49:12,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:12,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:13,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:13,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 00:49:13,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:13,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-14 00:49:13,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:13,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:13,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 00:49:13,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:49:13,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 00:49:13,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:13,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 00:49:13,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:13,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:13,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:13,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 00:49:13,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:13,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-14 00:49:13,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:13,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:13,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:49:13,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:49:13,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 00:49:13,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:13,680 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 340 proven. 37 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 00:49:13,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1432013759] [2020-10-14 00:49:13,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:49:13,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 00:49:13,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380904339] [2020-10-14 00:49:13,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 00:49:13,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:49:13,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 00:49:13,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-14 00:49:13,682 INFO L87 Difference]: Start difference. First operand 68659 states and 84943 transitions. Second operand 10 states. [2020-10-14 00:49:14,040 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 00:49:14,208 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:49:14,788 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 136 [2020-10-14 00:49:17,003 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-14 00:49:17,378 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 133 [2020-10-14 00:49:18,070 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 131 [2020-10-14 00:49:28,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:49:28,248 INFO L93 Difference]: Finished difference Result 193026 states and 270137 transitions. [2020-10-14 00:49:28,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-14 00:49:28,248 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 433 [2020-10-14 00:49:28,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:49:30,867 INFO L225 Difference]: With dead ends: 193026 [2020-10-14 00:49:30,867 INFO L226 Difference]: Without dead ends: 125940 [2020-10-14 00:49:30,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=317, Invalid=1323, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 00:49:31,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125940 states. [2020-10-14 00:49:33,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125940 to 120886. [2020-10-14 00:49:33,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120886 states. [2020-10-14 00:49:33,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120886 states to 120886 states and 164017 transitions. [2020-10-14 00:49:33,702 INFO L78 Accepts]: Start accepts. Automaton has 120886 states and 164017 transitions. Word has length 433 [2020-10-14 00:49:33,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:49:33,703 INFO L479 AbstractCegarLoop]: Abstraction has 120886 states and 164017 transitions. [2020-10-14 00:49:33,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 00:49:33,703 INFO L276 IsEmpty]: Start isEmpty. Operand 120886 states and 164017 transitions. [2020-10-14 00:49:34,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2020-10-14 00:49:34,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:49:34,005 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:49:34,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 00:49:34,005 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:49:34,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:49:34,006 INFO L82 PathProgramCache]: Analyzing trace with hash 742763701, now seen corresponding path program 1 times [2020-10-14 00:49:34,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:49:34,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1057508531] [2020-10-14 00:49:34,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:49:34,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:34,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:34,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:34,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:34,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:34,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:37,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:40,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:40,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 469 [2020-10-14 00:49:40,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:49:40,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6682 [2020-10-14 00:49:40,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:40,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:40,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 00:49:40,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-14 00:49:40,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 00:49:40,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:41,002 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:49:41,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:49:41,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:41,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:41,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:41,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:49:41,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:41,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:49:41,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:41,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:41,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:49:41,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:49:41,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:49:41,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:41,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:49:41,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:41,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:41,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:41,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 00:49:41,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:41,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 00:49:41,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:41,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:41,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:49:41,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:49:41,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:49:41,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:41,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 00:49:41,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:41,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:41,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:41,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:49:41,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:41,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 00:49:41,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:41,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:41,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:49:41,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:49:41,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 00:49:41,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:41,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 00:49:41,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:41,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:41,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:41,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 00:49:41,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:41,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-14 00:49:41,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:41,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:41,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 00:49:41,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:49:41,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 00:49:41,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:41,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 00:49:41,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:41,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:41,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:41,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 00:49:41,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:41,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 00:49:41,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:41,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:41,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:49:41,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 00:49:41,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:49:41,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:41,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 00:49:41,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:41,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:41,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:41,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 00:49:41,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:41,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 00:49:41,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:41,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:41,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:49:41,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 00:49:41,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:49:41,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:41,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-14 00:49:41,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:41,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:41,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:41,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 00:49:41,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:41,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 00:49:41,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:41,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:41,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:49:41,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 117 [2020-10-14 00:49:41,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:49:41,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:42,283 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 285 proven. 96 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2020-10-14 00:49:42,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1057508531] [2020-10-14 00:49:42,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:49:42,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 00:49:42,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377016921] [2020-10-14 00:49:42,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 00:49:42,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:49:42,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 00:49:42,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:49:42,285 INFO L87 Difference]: Start difference. First operand 120886 states and 164017 transitions. Second operand 8 states. [2020-10-14 00:49:42,787 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 164 [2020-10-14 00:49:42,997 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-14 00:49:43,340 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-14 00:49:43,619 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2020-10-14 00:49:44,281 WARN L193 SmtUtils]: Spent 641.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 167 [2020-10-14 00:49:45,612 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 87 [2020-10-14 00:49:47,240 WARN L193 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 161 [2020-10-14 00:49:47,877 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 84 [2020-10-14 00:49:48,809 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-10-14 00:49:51,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:49:51,689 INFO L93 Difference]: Finished difference Result 223380 states and 327354 transitions. [2020-10-14 00:49:51,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 00:49:51,690 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 449 [2020-10-14 00:49:51,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:49:52,438 INFO L225 Difference]: With dead ends: 223380 [2020-10-14 00:49:52,438 INFO L226 Difference]: Without dead ends: 130638 [2020-10-14 00:49:52,621 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2020-10-14 00:49:52,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130638 states. [2020-10-14 00:49:56,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130638 to 125643. [2020-10-14 00:49:56,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125643 states. [2020-10-14 00:49:56,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125643 states to 125643 states and 170108 transitions. [2020-10-14 00:49:56,433 INFO L78 Accepts]: Start accepts. Automaton has 125643 states and 170108 transitions. Word has length 449 [2020-10-14 00:49:56,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:49:56,433 INFO L479 AbstractCegarLoop]: Abstraction has 125643 states and 170108 transitions. [2020-10-14 00:49:56,433 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 00:49:56,433 INFO L276 IsEmpty]: Start isEmpty. Operand 125643 states and 170108 transitions. [2020-10-14 00:49:56,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2020-10-14 00:49:56,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:49:56,729 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 00:49:56,729 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 00:49:56,729 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:49:56,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:49:56,730 INFO L82 PathProgramCache]: Analyzing trace with hash -137481086, now seen corresponding path program 1 times [2020-10-14 00:49:56,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:49:56,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1023029772] [2020-10-14 00:49:56,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:49:56,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:57,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:58,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:59,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:01,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:01,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 475 [2020-10-14 00:50:01,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:50:01,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-14 00:50:01,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:01,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:01,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 00:50:01,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:50:01,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-14 00:50:01,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:50:02,205 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:50:02,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:50:02,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:02,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:02,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:02,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:50:02,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:02,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 00:50:02,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:02,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:02,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:50:02,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:50:02,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:50:02,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:50:02,389 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-14 00:50:02,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:50:02,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:02,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:02,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:02,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 00:50:02,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:02,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 394 [2020-10-14 00:50:02,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:02,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:02,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:50:02,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:50:02,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 00:50:02,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:50:02,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-14 00:50:02,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:03,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:03,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:03,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 00:50:03,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:03,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-14 00:50:03,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:03,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:03,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:50:03,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:50:03,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 00:50:03,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:50:03,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-14 00:50:03,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:03,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:03,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:03,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 00:50:03,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:03,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-14 00:50:03,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:03,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:03,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:50:03,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 117 [2020-10-14 00:50:03,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:50:03,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:50:03,584 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 259 proven. 167 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-14 00:50:03,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1023029772] [2020-10-14 00:50:03,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:50:03,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 00:50:03,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239252237] [2020-10-14 00:50:03,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 00:50:03,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:50:03,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 00:50:03,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:50:03,586 INFO L87 Difference]: Start difference. First operand 125643 states and 170108 transitions. Second operand 8 states. [2020-10-14 00:50:03,758 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 00:50:04,437 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 134