/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/Problem15_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 03:27:10,224 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 03:27:10,229 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 03:27:10,282 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 03:27:10,283 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 03:27:10,294 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 03:27:10,296 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 03:27:10,299 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 03:27:10,301 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 03:27:10,302 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 03:27:10,303 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 03:27:10,306 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 03:27:10,306 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 03:27:10,310 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 03:27:10,312 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 03:27:10,313 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 03:27:10,315 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 03:27:10,317 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 03:27:10,319 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 03:27:10,325 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 03:27:10,327 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 03:27:10,329 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 03:27:10,330 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 03:27:10,331 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 03:27:10,335 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 03:27:10,335 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 03:27:10,335 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 03:27:10,338 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 03:27:10,339 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 03:27:10,341 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 03:27:10,342 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 03:27:10,342 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 03:27:10,343 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 03:27:10,344 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 03:27:10,345 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 03:27:10,345 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 03:27:10,346 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 03:27:10,346 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 03:27:10,346 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 03:27:10,347 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 03:27:10,348 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 03:27:10,349 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 03:27:10,386 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 03:27:10,386 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 03:27:10,389 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 03:27:10,389 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 03:27:10,389 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 03:27:10,390 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 03:27:10,390 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 03:27:10,390 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 03:27:10,391 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 03:27:10,391 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 03:27:10,392 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 03:27:10,392 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 03:27:10,393 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 03:27:10,393 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 03:27:10,393 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 03:27:10,394 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 03:27:10,394 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 03:27:10,394 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 03:27:10,394 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 03:27:10,394 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 03:27:10,395 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 03:27:10,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:27:10,395 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 03:27:10,395 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 03:27:10,395 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 03:27:10,396 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 03:27:10,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 03:27:10,396 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 03:27:10,396 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 03:27:10,396 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 03:27:10,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 03:27:10,725 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 03:27:10,729 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 03:27:10,731 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 03:27:10,731 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 03:27:10,732 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label17.c [2020-10-14 03:27:10,805 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/64627a4c8/f047027585634af3b2ea16a6ca644156/FLAG3ac8eadc8 [2020-10-14 03:27:11,473 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 03:27:11,474 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label17.c [2020-10-14 03:27:11,500 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/64627a4c8/f047027585634af3b2ea16a6ca644156/FLAG3ac8eadc8 [2020-10-14 03:27:11,629 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/64627a4c8/f047027585634af3b2ea16a6ca644156 [2020-10-14 03:27:11,640 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 03:27:11,642 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 03:27:11,646 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 03:27:11,646 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 03:27:11,650 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 03:27:11,651 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:27:11" (1/1) ... [2020-10-14 03:27:11,655 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8a52991 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:27:11, skipping insertion in model container [2020-10-14 03:27:11,655 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:27:11" (1/1) ... [2020-10-14 03:27:11,664 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 03:27:11,741 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 03:27:12,753 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:27:12,758 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 03:27:13,024 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:27:13,046 INFO L208 MainTranslator]: Completed translation [2020-10-14 03:27:13,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:27:13 WrapperNode [2020-10-14 03:27:13,048 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 03:27:13,049 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 03:27:13,049 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 03:27:13,049 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 03:27:13,066 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:27:13" (1/1) ... [2020-10-14 03:27:13,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:27:13" (1/1) ... [2020-10-14 03:27:13,123 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:27:13" (1/1) ... [2020-10-14 03:27:13,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:27:13" (1/1) ... [2020-10-14 03:27:13,178 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:27:13" (1/1) ... [2020-10-14 03:27:13,194 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:27:13" (1/1) ... [2020-10-14 03:27:13,208 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:27:13" (1/1) ... [2020-10-14 03:27:13,229 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 03:27:13,230 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 03:27:13,230 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 03:27:13,230 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 03:27:13,231 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:27:13" (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 03:27:13,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 03:27:13,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 03:27:13,305 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 03:27:13,306 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 03:27:13,306 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 03:27:13,306 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 03:27:13,306 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 03:27:13,306 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 03:27:13,306 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 03:27:13,307 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 03:27:13,307 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 03:27:13,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 03:27:13,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 03:27:19,339 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 03:27:19,340 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 03:27:19,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:27:19 BoogieIcfgContainer [2020-10-14 03:27:19,348 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 03:27:19,350 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 03:27:19,350 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 03:27:19,354 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 03:27:19,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:27:11" (1/3) ... [2020-10-14 03:27:19,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cdd05a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:27:19, skipping insertion in model container [2020-10-14 03:27:19,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:27:13" (2/3) ... [2020-10-14 03:27:19,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cdd05a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:27:19, skipping insertion in model container [2020-10-14 03:27:19,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:27:19" (3/3) ... [2020-10-14 03:27:19,359 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label17.c [2020-10-14 03:27:19,372 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 03:27:19,382 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 03:27:19,398 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 03:27:19,429 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 03:27:19,429 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 03:27:19,429 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 03:27:19,429 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 03:27:19,429 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 03:27:19,430 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 03:27:19,430 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 03:27:19,430 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 03:27:19,461 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-14 03:27:19,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-14 03:27:19,472 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:27:19,474 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] [2020-10-14 03:27:19,475 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:27:19,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:27:19,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1566506531, now seen corresponding path program 1 times [2020-10-14 03:27:19,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:27:19,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1403156558] [2020-10-14 03:27:19,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:27:19,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:19,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:20,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:20,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 03:27:20,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:20,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 502 [2020-10-14 03:27:20,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:20,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:20,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:27:20,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:27:20,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 03:27:20,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 03:27:20,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:27:20,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:20,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:20,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:20,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:27:20,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:20,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 03:27:20,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:20,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:20,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:27:20,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:20,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:27:20,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:27:20,476 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 03:27:20,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1403156558] [2020-10-14 03:27:20,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:27:20,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 03:27:20,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342901590] [2020-10-14 03:27:20,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:27:20,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:27:20,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:27:20,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:27:20,514 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 5 states. [2020-10-14 03:27:29,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:27:29,419 INFO L93 Difference]: Finished difference Result 1584 states and 2883 transitions. [2020-10-14 03:27:29,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 03:27:29,422 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-10-14 03:27:29,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:27:29,450 INFO L225 Difference]: With dead ends: 1584 [2020-10-14 03:27:29,450 INFO L226 Difference]: Without dead ends: 1049 [2020-10-14 03:27:29,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:27:29,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1049 states. [2020-10-14 03:27:29,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1049 to 1024. [2020-10-14 03:27:29,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1024 states. [2020-10-14 03:27:29,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1566 transitions. [2020-10-14 03:27:29,604 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1566 transitions. Word has length 69 [2020-10-14 03:27:29,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:27:29,606 INFO L479 AbstractCegarLoop]: Abstraction has 1024 states and 1566 transitions. [2020-10-14 03:27:29,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:27:29,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1566 transitions. [2020-10-14 03:27:29,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-14 03:27:29,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:27:29,622 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:27:29,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 03:27:29,624 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:27:29,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:27:29,624 INFO L82 PathProgramCache]: Analyzing trace with hash 2129337345, now seen corresponding path program 1 times [2020-10-14 03:27:29,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:27:29,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1761227538] [2020-10-14 03:27:29,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:27:29,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:29,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:29,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:31,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:31,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:32,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:32,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-14 03:27:32,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:27:32,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2806 [2020-10-14 03:27:32,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:32,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:32,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:27:32,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-14 03:27:32,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 03:27:32,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:27:32,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:27:32,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:32,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:32,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:32,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:27:32,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:32,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 03:27:32,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:32,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:32,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:27:32,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:32,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:27:32,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:27:32,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:27:32,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:32,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:32,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:32,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 03:27:32,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:32,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-14 03:27:32,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:32,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:32,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:27:32,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:32,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 03:27:32,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:27:33,001 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:27:33,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1761227538] [2020-10-14 03:27:33,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:27:33,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:27:33,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758171144] [2020-10-14 03:27:33,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:27:33,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:27:33,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:27:33,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:27:33,007 INFO L87 Difference]: Start difference. First operand 1024 states and 1566 transitions. Second operand 5 states. [2020-10-14 03:27:43,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:27:43,664 INFO L93 Difference]: Finished difference Result 2680 states and 4201 transitions. [2020-10-14 03:27:43,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:27:43,666 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-10-14 03:27:43,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:27:43,683 INFO L225 Difference]: With dead ends: 2680 [2020-10-14 03:27:43,683 INFO L226 Difference]: Without dead ends: 1972 [2020-10-14 03:27:43,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:27:43,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1972 states. [2020-10-14 03:27:43,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1972 to 1964. [2020-10-14 03:27:43,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1964 states. [2020-10-14 03:27:43,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1964 states to 1964 states and 2924 transitions. [2020-10-14 03:27:43,755 INFO L78 Accepts]: Start accepts. Automaton has 1964 states and 2924 transitions. Word has length 141 [2020-10-14 03:27:43,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:27:43,756 INFO L479 AbstractCegarLoop]: Abstraction has 1964 states and 2924 transitions. [2020-10-14 03:27:43,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:27:43,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1964 states and 2924 transitions. [2020-10-14 03:27:43,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-14 03:27:43,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:27:43,759 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, 1, 1, 1, 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 03:27:43,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 03:27:43,760 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:27:43,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:27:43,761 INFO L82 PathProgramCache]: Analyzing trace with hash 290774033, now seen corresponding path program 1 times [2020-10-14 03:27:43,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:27:43,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [196767028] [2020-10-14 03:27:43,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:27:43,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:43,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:43,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:45,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:45,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-14 03:27:45,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:27:45,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1310 [2020-10-14 03:27:45,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:45,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:45,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:27:45,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-14 03:27:45,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 03:27:45,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:27:45,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:27:45,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:45,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:45,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:45,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:27:45,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:45,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:27:45,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:45,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:45,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:27:45,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:45,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:27:45,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:27:45,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:27:45,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:45,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:45,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:45,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 03:27:45,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:45,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-14 03:27:45,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:45,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:45,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:27:45,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:45,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 03:27:45,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:27:45,374 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:27:45,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [196767028] [2020-10-14 03:27:45,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:27:45,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:27:45,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896123880] [2020-10-14 03:27:45,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:27:45,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:27:45,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:27:45,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:27:45,378 INFO L87 Difference]: Start difference. First operand 1964 states and 2924 transitions. Second operand 5 states. [2020-10-14 03:27:56,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:27:56,088 INFO L93 Difference]: Finished difference Result 4617 states and 7103 transitions. [2020-10-14 03:27:56,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:27:56,089 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-10-14 03:27:56,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:27:56,117 INFO L225 Difference]: With dead ends: 4617 [2020-10-14 03:27:56,118 INFO L226 Difference]: Without dead ends: 3280 [2020-10-14 03:27:56,123 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:27:56,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3280 states. [2020-10-14 03:27:56,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3280 to 3271. [2020-10-14 03:27:56,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3271 states. [2020-10-14 03:27:56,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3271 states to 3271 states and 4811 transitions. [2020-10-14 03:27:56,229 INFO L78 Accepts]: Start accepts. Automaton has 3271 states and 4811 transitions. Word has length 149 [2020-10-14 03:27:56,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:27:56,230 INFO L479 AbstractCegarLoop]: Abstraction has 3271 states and 4811 transitions. [2020-10-14 03:27:56,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:27:56,230 INFO L276 IsEmpty]: Start isEmpty. Operand 3271 states and 4811 transitions. [2020-10-14 03:27:56,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-14 03:27:56,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:27:56,233 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, 1, 1, 1, 1, 1, 1, 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 03:27:56,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 03:27:56,233 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:27:56,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:27:56,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1571300643, now seen corresponding path program 1 times [2020-10-14 03:27:56,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:27:56,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [130389791] [2020-10-14 03:27:56,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:27:56,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:56,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:56,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:56,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-14 03:27:56,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:56,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 465 [2020-10-14 03:27:56,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:56,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:56,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:27:56,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:27:56,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 03:27:56,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:27:56,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:27:56,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:56,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:56,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:56,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:27:56,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:56,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 03:27:56,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:56,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:56,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:27:56,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:56,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:27:56,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:27:56,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:27:56,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:56,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:57,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:57,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 03:27:57,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:57,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-14 03:27:57,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:57,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:57,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:27:57,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:27:57,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 03:27:57,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:27:57,104 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:27:57,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [130389791] [2020-10-14 03:27:57,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:27:57,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 03:27:57,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139475494] [2020-10-14 03:27:57,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:27:57,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:27:57,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:27:57,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:27:57,107 INFO L87 Difference]: Start difference. First operand 3271 states and 4811 transitions. Second operand 7 states. [2020-10-14 03:28:08,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:28:08,182 INFO L93 Difference]: Finished difference Result 7528 states and 11268 transitions. [2020-10-14 03:28:08,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:28:08,184 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 152 [2020-10-14 03:28:08,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:28:08,214 INFO L225 Difference]: With dead ends: 7528 [2020-10-14 03:28:08,214 INFO L226 Difference]: Without dead ends: 4263 [2020-10-14 03:28:08,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 03:28:08,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4263 states. [2020-10-14 03:28:08,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4263 to 3938. [2020-10-14 03:28:08,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3938 states. [2020-10-14 03:28:08,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3938 states to 3938 states and 5469 transitions. [2020-10-14 03:28:08,373 INFO L78 Accepts]: Start accepts. Automaton has 3938 states and 5469 transitions. Word has length 152 [2020-10-14 03:28:08,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:28:08,375 INFO L479 AbstractCegarLoop]: Abstraction has 3938 states and 5469 transitions. [2020-10-14 03:28:08,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:28:08,376 INFO L276 IsEmpty]: Start isEmpty. Operand 3938 states and 5469 transitions. [2020-10-14 03:28:08,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-14 03:28:08,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:28:08,378 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:28:08,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 03:28:08,379 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:28:08,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:28:08,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1604771147, now seen corresponding path program 1 times [2020-10-14 03:28:08,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:28:08,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [854837453] [2020-10-14 03:28:08,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:28:08,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:08,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:08,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:09,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:09,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-14 03:28:09,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:28:09,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1158 [2020-10-14 03:28:09,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:09,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:09,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:28:09,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-14 03:28:09,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 03:28:09,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:28:09,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:28:09,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:09,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:09,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:09,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:28:09,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:09,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:28:09,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:09,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:09,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:28:09,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:28:09,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:28:09,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:28:09,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:28:09,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:09,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:09,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:09,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 03:28:09,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:09,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-14 03:28:09,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:09,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:09,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:28:09,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:28:09,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 03:28:09,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:28:09,881 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:28:09,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [854837453] [2020-10-14 03:28:09,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:28:09,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:28:09,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663967808] [2020-10-14 03:28:09,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:28:09,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:28:09,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:28:09,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:28:09,884 INFO L87 Difference]: Start difference. First operand 3938 states and 5469 transitions. Second operand 5 states. [2020-10-14 03:28:24,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:28:24,263 INFO L93 Difference]: Finished difference Result 10386 states and 15021 transitions. [2020-10-14 03:28:24,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:28:24,269 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-10-14 03:28:24,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:28:24,301 INFO L225 Difference]: With dead ends: 10386 [2020-10-14 03:28:24,301 INFO L226 Difference]: Without dead ends: 6761 [2020-10-14 03:28:24,312 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:28:24,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6761 states. [2020-10-14 03:28:24,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6761 to 6447. [2020-10-14 03:28:24,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6447 states. [2020-10-14 03:28:24,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6447 states to 6447 states and 8691 transitions. [2020-10-14 03:28:24,483 INFO L78 Accepts]: Start accepts. Automaton has 6447 states and 8691 transitions. Word has length 168 [2020-10-14 03:28:24,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:28:24,484 INFO L479 AbstractCegarLoop]: Abstraction has 6447 states and 8691 transitions. [2020-10-14 03:28:24,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:28:24,484 INFO L276 IsEmpty]: Start isEmpty. Operand 6447 states and 8691 transitions. [2020-10-14 03:28:24,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2020-10-14 03:28:24,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:28:24,493 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 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 03:28:24,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 03:28:24,493 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:28:24,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:28:24,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1722102800, now seen corresponding path program 1 times [2020-10-14 03:28:24,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:28:24,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1465278744] [2020-10-14 03:28:24,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:28:24,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:24,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:24,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:25,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:25,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:26,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:29,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:29,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 365 [2020-10-14 03:28:29,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:28:29,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-14 03:28:29,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:29,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:29,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:28:29,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 03:28:29,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 03:28:29,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:28:29,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:28:29,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:29,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:29,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:29,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:28:29,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:29,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 03:28:29,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:29,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:29,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:28:29,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:28:29,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:28:29,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:28:29,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:28:29,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:29,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:29,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:29,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 03:28:29,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:29,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-14 03:28:29,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:29,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:29,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:28:29,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:28:29,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 03:28:29,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:28:29,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 03:28:29,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:29,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:30,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:30,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:28:30,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:30,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-14 03:28:30,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:30,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:30,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:28:30,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:28:30,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 03:28:30,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:28:30,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-10-14 03:28:30,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:30,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:30,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:30,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 03:28:30,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:30,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 03:28:30,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:30,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:30,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:28:30,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-14 03:28:30,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:28:30,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:28:30,537 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 282 proven. 75 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-14 03:28:30,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1465278744] [2020-10-14 03:28:30,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:28:30,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:28:30,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402117462] [2020-10-14 03:28:30,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:28:30,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:28:30,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:28:30,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:28:30,543 INFO L87 Difference]: Start difference. First operand 6447 states and 8691 transitions. Second operand 7 states. [2020-10-14 03:28:41,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:28:41,873 INFO L93 Difference]: Finished difference Result 16383 states and 22495 transitions. [2020-10-14 03:28:41,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:28:41,875 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 351 [2020-10-14 03:28:41,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:28:41,932 INFO L225 Difference]: With dead ends: 16383 [2020-10-14 03:28:41,932 INFO L226 Difference]: Without dead ends: 9628 [2020-10-14 03:28:41,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:28:41,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9628 states. [2020-10-14 03:28:42,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9628 to 8384. [2020-10-14 03:28:42,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8384 states. [2020-10-14 03:28:42,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8384 states to 8384 states and 11117 transitions. [2020-10-14 03:28:42,217 INFO L78 Accepts]: Start accepts. Automaton has 8384 states and 11117 transitions. Word has length 351 [2020-10-14 03:28:42,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:28:42,218 INFO L479 AbstractCegarLoop]: Abstraction has 8384 states and 11117 transitions. [2020-10-14 03:28:42,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:28:42,218 INFO L276 IsEmpty]: Start isEmpty. Operand 8384 states and 11117 transitions. [2020-10-14 03:28:42,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2020-10-14 03:28:42,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:28:42,228 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:28:42,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 03:28:42,229 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:28:42,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:28:42,230 INFO L82 PathProgramCache]: Analyzing trace with hash -233536041, now seen corresponding path program 1 times [2020-10-14 03:28:42,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:28:42,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1579278774] [2020-10-14 03:28:42,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:28:42,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:42,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:42,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:44,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:47,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:47,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 391 [2020-10-14 03:28:47,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:28:47,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-14 03:28:47,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:47,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:47,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:28:47,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-14 03:28:47,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 03:28:47,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:28:47,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:28:47,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:47,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:47,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:47,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:28:47,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:47,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 03:28:47,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:47,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:47,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:28:47,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:28:47,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:28:47,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:28:47,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:28:47,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:47,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:47,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:47,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:28:47,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:47,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-14 03:28:47,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:47,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:47,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:28:47,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:28:47,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-14 03:28:47,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:28:47,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:28:47,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:47,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:48,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:48,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 03:28:48,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:48,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-14 03:28:48,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:48,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:48,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:28:48,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:28:48,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 03:28:48,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:28:48,327 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 231 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:28:48,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1579278774] [2020-10-14 03:28:48,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:28:48,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:28:48,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858943079] [2020-10-14 03:28:48,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:28:48,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:28:48,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:28:48,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:28:48,332 INFO L87 Difference]: Start difference. First operand 8384 states and 11117 transitions. Second operand 7 states. [2020-10-14 03:28:56,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:28:56,924 INFO L93 Difference]: Finished difference Result 20335 states and 28284 transitions. [2020-10-14 03:28:56,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:28:56,929 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 379 [2020-10-14 03:28:56,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:28:56,972 INFO L225 Difference]: With dead ends: 20335 [2020-10-14 03:28:56,972 INFO L226 Difference]: Without dead ends: 12264 [2020-10-14 03:28:56,994 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:28:57,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12264 states. [2020-10-14 03:28:57,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12264 to 12230. [2020-10-14 03:28:57,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12230 states. [2020-10-14 03:28:57,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12230 states to 12230 states and 16512 transitions. [2020-10-14 03:28:57,285 INFO L78 Accepts]: Start accepts. Automaton has 12230 states and 16512 transitions. Word has length 379 [2020-10-14 03:28:57,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:28:57,286 INFO L479 AbstractCegarLoop]: Abstraction has 12230 states and 16512 transitions. [2020-10-14 03:28:57,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:28:57,286 INFO L276 IsEmpty]: Start isEmpty. Operand 12230 states and 16512 transitions. [2020-10-14 03:28:57,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2020-10-14 03:28:57,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:28:57,304 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:28:57,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 03:28:57,304 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:28:57,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:28:57,305 INFO L82 PathProgramCache]: Analyzing trace with hash 506059800, now seen corresponding path program 1 times [2020-10-14 03:28:57,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:28:57,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1565745992] [2020-10-14 03:28:57,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:28:57,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:57,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:57,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:57,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:57,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:02,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:02,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 476 [2020-10-14 03:29:02,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:29:02,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 03:29:02,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:02,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:02,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:29:02,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-14 03:29:02,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 03:29:02,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:29:02,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:29:02,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:02,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:02,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:02,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:29:02,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:02,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:29:02,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:02,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:02,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:29:02,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:29:02,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:29:02,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:29:02,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:29:02,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:02,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:02,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:02,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:29:02,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:02,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 311 [2020-10-14 03:29:02,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:02,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:02,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:29:02,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:29:02,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-14 03:29:02,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:29:03,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:29:03,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:03,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:03,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:03,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:29:03,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:03,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-14 03:29:03,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:03,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:03,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:29:03,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:29:03,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 03:29:03,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:29:03,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-10-14 03:29:03,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:03,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:03,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:03,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 03:29:03,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:03,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 03:29:03,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:03,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:03,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:29:03,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 03:29:03,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:29:03,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:29:03,567 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 298 proven. 81 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-14 03:29:03,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1565745992] [2020-10-14 03:29:03,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:29:03,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:29:03,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936290038] [2020-10-14 03:29:03,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:29:03,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:29:03,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:29:03,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:29:03,570 INFO L87 Difference]: Start difference. First operand 12230 states and 16512 transitions. Second operand 7 states. [2020-10-14 03:29:15,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:29:15,290 INFO L93 Difference]: Finished difference Result 25971 states and 37753 transitions. [2020-10-14 03:29:15,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 03:29:15,292 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 462 [2020-10-14 03:29:15,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:29:15,368 INFO L225 Difference]: With dead ends: 25971 [2020-10-14 03:29:15,368 INFO L226 Difference]: Without dead ends: 14054 [2020-10-14 03:29:15,408 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 03:29:15,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14054 states. [2020-10-14 03:29:15,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14054 to 13838. [2020-10-14 03:29:15,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13838 states. [2020-10-14 03:29:15,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13838 states to 13838 states and 18580 transitions. [2020-10-14 03:29:15,848 INFO L78 Accepts]: Start accepts. Automaton has 13838 states and 18580 transitions. Word has length 462 [2020-10-14 03:29:15,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:29:15,849 INFO L479 AbstractCegarLoop]: Abstraction has 13838 states and 18580 transitions. [2020-10-14 03:29:15,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:29:15,849 INFO L276 IsEmpty]: Start isEmpty. Operand 13838 states and 18580 transitions. [2020-10-14 03:29:15,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2020-10-14 03:29:15,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:29:15,871 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:29:15,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 03:29:15,872 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:29:15,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:29:15,872 INFO L82 PathProgramCache]: Analyzing trace with hash 41639311, now seen corresponding path program 1 times [2020-10-14 03:29:15,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:29:15,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [438186886] [2020-10-14 03:29:15,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:29:15,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:16,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:16,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:16,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:19,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:19,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:20,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:21,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:21,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 513 [2020-10-14 03:29:21,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 03:29:21,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 03:29:21,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:21,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:21,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:29:21,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 247 [2020-10-14 03:29:21,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 03:29:21,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:29:21,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:29:21,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:21,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:21,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:21,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:29:21,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:21,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:29:21,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:21,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:21,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:29:21,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:29:21,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:29:21,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:29:21,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:29:21,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:21,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:21,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:21,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-14 03:29:21,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:21,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-14 03:29:21,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:21,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:21,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:29:21,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:29:21,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 232 [2020-10-14 03:29:21,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:29:21,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-14 03:29:21,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:21,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:21,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:21,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:29:21,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:21,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-14 03:29:21,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:21,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:21,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:29:21,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:29:21,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 03:29:21,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:29:21,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-10-14 03:29:21,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:21,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:21,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:21,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 03:29:21,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:21,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 03:29:21,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:21,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:21,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:29:21,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 03:29:21,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:29:21,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:29:21,832 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 298 proven. 81 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-14 03:29:21,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [438186886] [2020-10-14 03:29:21,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:29:21,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:29:21,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599980608] [2020-10-14 03:29:21,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:29:21,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:29:21,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:29:21,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:29:21,835 INFO L87 Difference]: Start difference. First operand 13838 states and 18580 transitions. Second operand 7 states. [2020-10-14 03:29:31,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:29:31,625 INFO L93 Difference]: Finished difference Result 31197 states and 42211 transitions. [2020-10-14 03:29:31,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:29:31,627 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 499 [2020-10-14 03:29:31,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:29:31,695 INFO L225 Difference]: With dead ends: 31197 [2020-10-14 03:29:31,695 INFO L226 Difference]: Without dead ends: 17672 [2020-10-14 03:29:31,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:29:31,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17672 states. [2020-10-14 03:29:32,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17672 to 17307. [2020-10-14 03:29:32,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17307 states. [2020-10-14 03:29:32,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17307 states to 17307 states and 22898 transitions. [2020-10-14 03:29:32,099 INFO L78 Accepts]: Start accepts. Automaton has 17307 states and 22898 transitions. Word has length 499 [2020-10-14 03:29:32,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:29:32,100 INFO L479 AbstractCegarLoop]: Abstraction has 17307 states and 22898 transitions. [2020-10-14 03:29:32,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:29:32,100 INFO L276 IsEmpty]: Start isEmpty. Operand 17307 states and 22898 transitions. [2020-10-14 03:29:32,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2020-10-14 03:29:32,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:29:32,116 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:29:32,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 03:29:32,117 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:29:32,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:29:32,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1112512037, now seen corresponding path program 1 times [2020-10-14 03:29:32,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:29:32,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2074422928] [2020-10-14 03:29:32,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:29:32,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:32,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:32,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:32,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:32,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:37,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:37,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 527 [2020-10-14 03:29:37,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:29:37,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 03:29:37,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:37,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:37,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:29:37,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 261 [2020-10-14 03:29:37,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 03:29:37,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:29:37,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:29:37,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:37,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:37,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:37,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:29:37,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:37,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:29:37,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:37,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:37,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:29:37,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:29:37,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:29:37,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:29:37,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:29:37,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:37,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:37,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:37,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-14 03:29:37,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:37,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-14 03:29:37,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:37,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:37,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:29:37,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:29:37,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 246 [2020-10-14 03:29:37,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:29:37,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-10-14 03:29:37,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:37,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:37,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:37,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:29:37,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:37,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-14 03:29:37,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:37,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:37,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:29:37,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:29:37,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 03:29:37,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:29:37,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2020-10-14 03:29:37,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:37,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:37,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:37,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 03:29:37,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:37,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 03:29:37,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:37,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:37,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:29:37,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 03:29:37,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:29:37,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:29:38,097 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 298 proven. 81 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-14 03:29:38,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2074422928] [2020-10-14 03:29:38,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:29:38,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:29:38,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862941055] [2020-10-14 03:29:38,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:29:38,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:29:38,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:29:38,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:29:38,100 INFO L87 Difference]: Start difference. First operand 17307 states and 22898 transitions. Second operand 7 states. [2020-10-14 03:29:53,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:29:53,195 INFO L93 Difference]: Finished difference Result 38706 states and 52552 transitions. [2020-10-14 03:29:53,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:29:53,196 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 513 [2020-10-14 03:29:53,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:29:53,255 INFO L225 Difference]: With dead ends: 38706 [2020-10-14 03:29:53,255 INFO L226 Difference]: Without dead ends: 21405 [2020-10-14 03:29:53,290 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:29:53,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21405 states. [2020-10-14 03:29:53,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21405 to 21361. [2020-10-14 03:29:53,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21361 states. [2020-10-14 03:29:53,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21361 states to 21361 states and 28045 transitions. [2020-10-14 03:29:53,748 INFO L78 Accepts]: Start accepts. Automaton has 21361 states and 28045 transitions. Word has length 513 [2020-10-14 03:29:53,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:29:53,749 INFO L479 AbstractCegarLoop]: Abstraction has 21361 states and 28045 transitions. [2020-10-14 03:29:53,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:29:53,750 INFO L276 IsEmpty]: Start isEmpty. Operand 21361 states and 28045 transitions. [2020-10-14 03:29:53,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2020-10-14 03:29:53,774 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:29:53,775 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:29:53,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 03:29:53,775 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:29:53,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:29:53,776 INFO L82 PathProgramCache]: Analyzing trace with hash 419482575, now seen corresponding path program 1 times [2020-10-14 03:29:53,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:29:53,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807403561] [2020-10-14 03:29:53,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:29:53,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:53,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:54,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:54,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:57,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:58,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:58,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 550 [2020-10-14 03:29:58,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:29:58,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-14 03:29:58,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:58,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:58,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:29:58,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-14 03:29:58,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 03:29:58,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:29:59,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:29:59,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:59,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:59,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:59,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:29:59,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:59,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:29:59,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:59,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:59,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:29:59,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:29:59,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:29:59,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:29:59,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:29:59,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:59,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:59,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:59,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 03:29:59,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:59,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-14 03:29:59,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:59,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:59,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:29:59,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:29:59,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 03:29:59,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:29:59,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 03:29:59,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:59,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:59,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:59,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:29:59,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:59,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-14 03:29:59,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:59,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:59,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:29:59,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:29:59,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 03:29:59,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:29:59,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-14 03:29:59,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:59,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:59,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:59,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 03:29:59,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:59,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 03:29:59,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:59,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:59,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:29:59,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 03:29:59,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:29:59,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:30:00,440 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 298 proven. 81 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-14 03:30:00,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807403561] [2020-10-14 03:30:00,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:30:00,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 03:30:00,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064205398] [2020-10-14 03:30:00,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:30:00,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:30:00,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:30:00,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:30:00,444 INFO L87 Difference]: Start difference. First operand 21361 states and 28045 transitions. Second operand 8 states. [2020-10-14 03:30:25,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:30:25,063 INFO L93 Difference]: Finished difference Result 45911 states and 64458 transitions. [2020-10-14 03:30:25,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 03:30:25,066 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 536 [2020-10-14 03:30:25,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:30:25,199 INFO L225 Difference]: With dead ends: 45911 [2020-10-14 03:30:25,199 INFO L226 Difference]: Without dead ends: 24556 [2020-10-14 03:30:25,253 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2020-10-14 03:30:25,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24556 states. [2020-10-14 03:30:26,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24556 to 23888. [2020-10-14 03:30:26,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23888 states. [2020-10-14 03:30:26,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23888 states to 23888 states and 31365 transitions. [2020-10-14 03:30:26,201 INFO L78 Accepts]: Start accepts. Automaton has 23888 states and 31365 transitions. Word has length 536 [2020-10-14 03:30:26,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:30:26,202 INFO L479 AbstractCegarLoop]: Abstraction has 23888 states and 31365 transitions. [2020-10-14 03:30:26,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 03:30:26,202 INFO L276 IsEmpty]: Start isEmpty. Operand 23888 states and 31365 transitions. [2020-10-14 03:30:26,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2020-10-14 03:30:26,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:30:26,218 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:30:26,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 03:30:26,218 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:30:26,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:30:26,219 INFO L82 PathProgramCache]: Analyzing trace with hash 88620691, now seen corresponding path program 1 times [2020-10-14 03:30:26,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:30:26,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1483180549] [2020-10-14 03:30:26,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:30:26,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:26,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:26,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:29,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:31,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:31,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 561 [2020-10-14 03:30:31,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:30:31,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 03:30:31,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:31,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:31,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:30:31,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 380 [2020-10-14 03:30:31,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 03:30:31,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:31,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:30:31,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:31,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:31,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:31,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:30:31,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:31,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:30:31,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:31,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:31,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:30:31,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:30:31,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:30:31,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:31,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:30:31,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:31,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:31,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:31,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:30:31,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:31,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 03:30:31,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:31,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:31,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:30:31,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:30:31,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:30:31,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:31,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:30:31,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:31,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:31,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:31,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-14 03:30:31,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:31,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-14 03:30:31,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:31,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:31,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:30:31,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:30:31,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-14 03:30:31,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:31,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-10-14 03:30:31,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:31,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:31,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:31,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 03:30:31,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:31,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-14 03:30:31,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:31,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:31,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:30:31,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:30:31,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 03:30:31,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:32,176 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 405 proven. 2 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2020-10-14 03:30:32,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1483180549] [2020-10-14 03:30:32,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:30:32,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:30:32,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774658726] [2020-10-14 03:30:32,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:30:32,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:30:32,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:30:32,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:30:32,178 INFO L87 Difference]: Start difference. First operand 23888 states and 31365 transitions. Second operand 7 states. [2020-10-14 03:30:45,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:30:45,282 INFO L93 Difference]: Finished difference Result 55395 states and 78698 transitions. [2020-10-14 03:30:45,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:30:45,284 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 547 [2020-10-14 03:30:45,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:30:45,435 INFO L225 Difference]: With dead ends: 55395 [2020-10-14 03:30:45,436 INFO L226 Difference]: Without dead ends: 31513 [2020-10-14 03:30:45,497 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:30:45,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31513 states. [2020-10-14 03:30:46,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31513 to 31073. [2020-10-14 03:30:46,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31073 states. [2020-10-14 03:30:46,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31073 states to 31073 states and 40281 transitions. [2020-10-14 03:30:46,411 INFO L78 Accepts]: Start accepts. Automaton has 31073 states and 40281 transitions. Word has length 547 [2020-10-14 03:30:46,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:30:46,412 INFO L479 AbstractCegarLoop]: Abstraction has 31073 states and 40281 transitions. [2020-10-14 03:30:46,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:30:46,412 INFO L276 IsEmpty]: Start isEmpty. Operand 31073 states and 40281 transitions. [2020-10-14 03:30:46,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2020-10-14 03:30:46,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:30:46,427 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:30:46,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 03:30:46,428 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:30:46,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:30:46,428 INFO L82 PathProgramCache]: Analyzing trace with hash 187040411, now seen corresponding path program 1 times [2020-10-14 03:30:46,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:30:46,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [199446613] [2020-10-14 03:30:46,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:30:46,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:46,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:47,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:47,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 563 [2020-10-14 03:30:47,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:47,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 918 [2020-10-14 03:30:47,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:47,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:47,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:30:47,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 03:30:47,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 03:30:47,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:47,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:30:47,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:47,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:47,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:47,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:30:47,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:47,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:30:47,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:47,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:47,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:30:47,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:30:47,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:30:47,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:47,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:30:47,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:47,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:47,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:47,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 03:30:47,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:47,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 03:30:47,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:47,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:47,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:30:47,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:30:47,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:30:47,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:47,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 03:30:47,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:47,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:47,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:47,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:30:47,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:47,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-14 03:30:47,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:47,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:47,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:30:47,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:30:47,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 03:30:47,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:30:47,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 03:30:47,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:47,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:48,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:48,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 03:30:48,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:48,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-14 03:30:48,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:48,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:48,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:30:48,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:30:48,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 03:30:48,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:48,302 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 351 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-14 03:30:48,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [199446613] [2020-10-14 03:30:48,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:30:48,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:30:48,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254589740] [2020-10-14 03:30:48,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:30:48,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:30:48,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:30:48,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:30:48,305 INFO L87 Difference]: Start difference. First operand 31073 states and 40281 transitions. Second operand 7 states.