/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=BIGGEST --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/Problem04_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 11:41:41,275 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 11:41:41,278 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 11:41:41,320 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 11:41:41,320 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 11:41:41,329 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 11:41:41,330 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 11:41:41,334 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 11:41:41,337 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 11:41:41,340 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 11:41:41,341 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 11:41:41,341 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 11:41:41,342 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 11:41:41,344 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 11:41:41,347 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 11:41:41,349 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 11:41:41,350 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 11:41:41,352 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 11:41:41,354 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 11:41:41,364 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 11:41:41,366 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 11:41:41,367 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 11:41:41,368 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 11:41:41,369 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 11:41:41,381 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 11:41:41,381 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 11:41:41,382 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 11:41:41,387 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 11:41:41,387 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 11:41:41,391 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 11:41:41,391 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 11:41:41,392 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 11:41:41,393 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 11:41:41,394 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 11:41:41,394 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 11:41:41,395 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 11:41:41,395 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 11:41:41,396 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 11:41:41,396 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 11:41:41,400 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 11:41:41,401 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 11:41:41,401 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 [2020-10-12 11:41:41,440 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 11:41:41,441 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 11:41:41,443 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 11:41:41,443 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 11:41:41,443 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 11:41:41,443 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 11:41:41,444 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 11:41:41,444 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 11:41:41,444 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 11:41:41,444 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 11:41:41,446 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 11:41:41,446 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 11:41:41,446 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 11:41:41,446 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 11:41:41,447 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 11:41:41,447 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 11:41:41,447 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 11:41:41,447 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 11:41:41,447 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 11:41:41,448 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 11:41:41,448 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 11:41:41,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 11:41:41,448 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 11:41:41,449 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 11:41:41,449 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 11:41:41,449 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 11:41:41,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 11:41:41,449 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 11:41:41,449 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 11:41:41,449 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 11:41:41,807 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 11:41:41,822 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 11:41:41,826 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 11:41:41,827 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 11:41:41,828 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 11:41:41,828 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label44.c [2020-10-12 11:41:41,890 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c7ded0932/ff6e4cfaba8243f49c3f1ab8df4848b3/FLAGfa46041f1 [2020-10-12 11:41:42,637 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 11:41:42,638 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label44.c [2020-10-12 11:41:42,674 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c7ded0932/ff6e4cfaba8243f49c3f1ab8df4848b3/FLAGfa46041f1 [2020-10-12 11:41:42,695 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c7ded0932/ff6e4cfaba8243f49c3f1ab8df4848b3 [2020-10-12 11:41:42,706 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 11:41:42,709 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 11:41:42,713 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 11:41:42,713 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 11:41:42,717 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 11:41:42,719 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:41:42" (1/1) ... [2020-10-12 11:41:42,723 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ff1ef1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:41:42, skipping insertion in model container [2020-10-12 11:41:42,723 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:41:42" (1/1) ... [2020-10-12 11:41:42,734 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 11:41:42,911 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 11:41:44,585 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:41:44,590 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 11:41:45,401 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:41:45,434 INFO L208 MainTranslator]: Completed translation [2020-10-12 11:41:45,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:41:45 WrapperNode [2020-10-12 11:41:45,436 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 11:41:45,437 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 11:41:45,437 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 11:41:45,437 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 11:41:45,452 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:41:45" (1/1) ... [2020-10-12 11:41:45,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:41:45" (1/1) ... [2020-10-12 11:41:45,508 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:41:45" (1/1) ... [2020-10-12 11:41:45,509 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:41:45" (1/1) ... [2020-10-12 11:41:45,609 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:41:45" (1/1) ... [2020-10-12 11:41:45,639 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:41:45" (1/1) ... [2020-10-12 11:41:45,661 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:41:45" (1/1) ... [2020-10-12 11:41:45,685 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 11:41:45,686 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 11:41:45,686 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 11:41:45,686 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 11:41:45,688 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:41:45" (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 [2020-10-12 11:41:45,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 11:41:45,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 11:41:45,770 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 11:41:45,770 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 11:41:45,771 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 11:41:45,771 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 11:41:45,771 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 11:41:45,772 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 11:41:45,772 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 11:41:45,772 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 11:41:45,773 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 11:41:45,773 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 11:41:45,773 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 11:41:45,773 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 11:41:45,774 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 11:41:45,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 11:41:45,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 11:41:50,208 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 11:41:50,208 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 11:41:50,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:41:50 BoogieIcfgContainer [2020-10-12 11:41:50,231 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 11:41:50,234 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 11:41:50,234 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 11:41:50,240 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 11:41:50,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 11:41:42" (1/3) ... [2020-10-12 11:41:50,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ecd6451 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:41:50, skipping insertion in model container [2020-10-12 11:41:50,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:41:45" (2/3) ... [2020-10-12 11:41:50,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ecd6451 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:41:50, skipping insertion in model container [2020-10-12 11:41:50,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:41:50" (3/3) ... [2020-10-12 11:41:50,246 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label44.c [2020-10-12 11:41:50,263 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 11:41:50,273 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 11:41:50,287 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 11:41:50,316 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 11:41:50,317 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 11:41:50,317 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 11:41:50,317 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 11:41:50,317 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 11:41:50,317 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 11:41:50,317 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 11:41:50,318 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 11:41:50,354 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2020-10-12 11:41:50,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 795 [2020-10-12 11:41:50,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:41:50,413 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:41:50,414 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:41:50,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:41:50,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1766115387, now seen corresponding path program 1 times [2020-10-12 11:41:50,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:41:50,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1184455765] [2020-10-12 11:41:50,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:41:51,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:41:51,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:41:55,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:41:56,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:41:56,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 808 [2020-10-12 11:41:56,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:41:56,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-12 11:41:56,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:41:56,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 11:41:56,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:41:56,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 742 [2020-10-12 11:41:56,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 11:41:57,839 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-10-12 11:41:58,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:41:58,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:41:58,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:41:58,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:41:58,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:41:58,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:41:58,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 11:41:58,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:41:58,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:41:58,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:41:58,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:41:58,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:42:02,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:42:02,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1184455765] [2020-10-12 11:42:02,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 11:42:02,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-12 11:42:02,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964080280] [2020-10-12 11:42:02,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 11:42:02,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:42:02,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 11:42:02,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2020-10-12 11:42:02,786 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 18 states. [2020-10-12 11:42:03,798 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-12 11:42:05,824 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-12 11:42:06,162 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 93 [2020-10-12 11:42:08,190 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2020-10-12 11:42:09,256 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 83 [2020-10-12 11:42:18,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:42:18,070 INFO L93 Difference]: Finished difference Result 2548 states and 4905 transitions. [2020-10-12 11:42:18,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 11:42:18,074 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 794 [2020-10-12 11:42:18,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:42:18,136 INFO L225 Difference]: With dead ends: 2548 [2020-10-12 11:42:18,136 INFO L226 Difference]: Without dead ends: 1580 [2020-10-12 11:42:18,147 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=186, Invalid=870, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 11:42:18,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2020-10-12 11:42:18,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 1580. [2020-10-12 11:42:18,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-10-12 11:42:18,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 2339 transitions. [2020-10-12 11:42:18,341 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 2339 transitions. Word has length 794 [2020-10-12 11:42:18,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:42:18,345 INFO L479 AbstractCegarLoop]: Abstraction has 1580 states and 2339 transitions. [2020-10-12 11:42:18,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 11:42:18,346 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 2339 transitions. [2020-10-12 11:42:18,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 814 [2020-10-12 11:42:18,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:42:18,385 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:42:18,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 11:42:18,385 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:42:18,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:42:18,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1490903796, now seen corresponding path program 1 times [2020-10-12 11:42:18,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:42:18,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [110809713] [2020-10-12 11:42:18,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:42:18,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:42:18,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:42:19,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:42:23,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:42:23,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:42:23,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 829 [2020-10-12 11:42:23,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:42:23,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-12 11:42:23,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:42:23,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 11:42:23,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-12 11:42:23,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 705 [2020-10-12 11:42:23,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-12 11:42:29,981 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 32 [2020-10-12 11:42:30,150 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2020-10-12 11:42:30,287 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2020-10-12 11:42:30,487 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 49 [2020-10-12 11:42:30,689 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 47 [2020-10-12 11:42:30,892 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 44 [2020-10-12 11:42:31,067 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 42 [2020-10-12 11:42:31,245 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 42 [2020-10-12 11:42:31,432 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 42 [2020-10-12 11:42:31,594 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 35 [2020-10-12 11:42:31,767 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 35 [2020-10-12 11:42:31,959 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 35 [2020-10-12 11:42:32,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:42:32,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:42:32,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:42:32,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:42:32,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:42:32,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:42:32,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:42:32,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:42:32,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:42:32,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:42:32,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:42:32,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:42:32,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:42:32,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:42:32,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:42:32,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:42:32,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:42:32,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:42:32,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 11:42:32,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:42:32,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:42:32,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:42:32,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 11:42:32,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:42:38,023 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:42:38,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [110809713] [2020-10-12 11:42:38,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:42:38,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 11:42:38,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800559539] [2020-10-12 11:42:38,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 11:42:38,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:42:38,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 11:42:38,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-10-12 11:42:38,029 INFO L87 Difference]: Start difference. First operand 1580 states and 2339 transitions. Second operand 19 states. [2020-10-12 11:42:38,327 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-12 11:42:38,528 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-12 11:42:39,096 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 113 [2020-10-12 11:42:41,823 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 112 [2020-10-12 11:42:43,041 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 109 [2020-10-12 11:42:44,454 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 110 [2020-10-12 11:42:44,908 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-12 11:42:45,233 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 99 [2020-10-12 11:42:46,332 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 94 [2020-10-12 11:42:50,451 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-12 11:42:50,622 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-10-12 11:42:55,391 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-10-12 11:42:55,558 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-12 11:42:56,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:42:56,838 INFO L93 Difference]: Finished difference Result 3123 states and 5328 transitions. [2020-10-12 11:42:56,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 11:42:56,840 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 813 [2020-10-12 11:42:56,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:42:56,852 INFO L225 Difference]: With dead ends: 3123 [2020-10-12 11:42:56,852 INFO L226 Difference]: Without dead ends: 2276 [2020-10-12 11:42:56,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=179, Invalid=813, Unknown=0, NotChecked=0, Total=992 [2020-10-12 11:42:56,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2276 states. [2020-10-12 11:42:56,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2276 to 2276. [2020-10-12 11:42:56,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2276 states. [2020-10-12 11:42:56,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2276 states to 2276 states and 3045 transitions. [2020-10-12 11:42:56,917 INFO L78 Accepts]: Start accepts. Automaton has 2276 states and 3045 transitions. Word has length 813 [2020-10-12 11:42:56,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:42:56,918 INFO L479 AbstractCegarLoop]: Abstraction has 2276 states and 3045 transitions. [2020-10-12 11:42:56,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 11:42:56,918 INFO L276 IsEmpty]: Start isEmpty. Operand 2276 states and 3045 transitions. [2020-10-12 11:42:56,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 821 [2020-10-12 11:42:56,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:42:56,930 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:42:56,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 11:42:56,931 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:42:56,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:42:56,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1414149606, now seen corresponding path program 1 times [2020-10-12 11:42:56,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:42:56,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [252879092] [2020-10-12 11:42:56,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:42:57,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:42:57,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:42:57,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:42:59,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:02,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:43:02,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 836 [2020-10-12 11:43:02,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:43:02,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5102 [2020-10-12 11:43:02,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:43:02,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 11:43:02,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-12 11:43:02,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 517 [2020-10-12 11:43:02,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:43:03,893 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 36 [2020-10-12 11:43:04,013 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 34 [2020-10-12 11:43:04,174 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-10-12 11:43:04,316 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 43 [2020-10-12 11:43:04,461 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 40 [2020-10-12 11:43:05,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:43:05,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:43:05,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:05,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:43:05,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:43:05,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:43:05,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 11:43:05,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:43:05,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:43:05,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:43:05,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:43:05,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:43:05,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:43:05,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:43:05,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:05,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:43:05,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-12 11:43:05,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:43:05,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 11:43:05,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:43:05,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:43:05,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:43:05,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 11:43:05,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:43:08,576 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:43:08,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [252879092] [2020-10-12 11:43:08,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:43:08,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 11:43:08,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094686449] [2020-10-12 11:43:08,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 11:43:08,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:43:08,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 11:43:08,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2020-10-12 11:43:08,580 INFO L87 Difference]: Start difference. First operand 2276 states and 3045 transitions. Second operand 17 states. [2020-10-12 11:43:08,971 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-12 11:43:12,426 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-12 11:43:13,075 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-12 11:43:13,254 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-12 11:43:13,455 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-12 11:43:13,817 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-12 11:43:14,764 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-12 11:43:17,973 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 98 [2020-10-12 11:43:21,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:43:21,813 INFO L93 Difference]: Finished difference Result 4329 states and 6367 transitions. [2020-10-12 11:43:21,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 11:43:21,815 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 820 [2020-10-12 11:43:21,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:43:21,829 INFO L225 Difference]: With dead ends: 4329 [2020-10-12 11:43:21,830 INFO L226 Difference]: Without dead ends: 2786 [2020-10-12 11:43:21,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=159, Invalid=597, Unknown=0, NotChecked=0, Total=756 [2020-10-12 11:43:21,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2786 states. [2020-10-12 11:43:21,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2786 to 2786. [2020-10-12 11:43:21,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2786 states. [2020-10-12 11:43:21,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2786 states to 2786 states and 3564 transitions. [2020-10-12 11:43:21,943 INFO L78 Accepts]: Start accepts. Automaton has 2786 states and 3564 transitions. Word has length 820 [2020-10-12 11:43:21,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:43:21,945 INFO L479 AbstractCegarLoop]: Abstraction has 2786 states and 3564 transitions. [2020-10-12 11:43:21,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 11:43:21,945 INFO L276 IsEmpty]: Start isEmpty. Operand 2786 states and 3564 transitions. [2020-10-12 11:43:21,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 831 [2020-10-12 11:43:21,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:43:21,959 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:43:21,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 11:43:21,959 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:43:21,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:43:21,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1209345055, now seen corresponding path program 1 times [2020-10-12 11:43:21,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:43:21,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1776686077] [2020-10-12 11:43:21,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:43:22,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:43:22,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:22,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:22,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:27,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:43:27,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 848 [2020-10-12 11:43:27,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:43:27,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5194 [2020-10-12 11:43:27,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:43:27,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 11:43:27,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:43:27,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 842 [2020-10-12 11:43:27,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:43:27,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:43:27,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:43:27,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:27,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:43:27,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:43:27,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:43:27,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 11:43:27,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:43:27,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:43:27,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:43:27,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:43:27,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:43:27,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:43:27,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:43:27,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:27,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:27,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:43:27,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:43:27,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:43:27,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 11:43:27,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:43:27,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:43:27,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:43:27,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 11:43:27,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:43:27,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:43:27,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:43:27,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:27,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:27,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:43:27,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 11:43:27,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:43:27,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 11:43:27,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:43:27,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:43:27,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:43:27,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 11:43:27,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:43:28,539 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-12 11:43:28,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1776686077] [2020-10-12 11:43:28,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:43:28,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 11:43:28,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404110224] [2020-10-12 11:43:28,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:43:28,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:43:28,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:43:28,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:43:28,543 INFO L87 Difference]: Start difference. First operand 2786 states and 3564 transitions. Second operand 7 states. [2020-10-12 11:43:42,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:43:42,075 INFO L93 Difference]: Finished difference Result 6574 states and 9697 transitions. [2020-10-12 11:43:42,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 11:43:42,080 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 830 [2020-10-12 11:43:42,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:43:42,112 INFO L225 Difference]: With dead ends: 6574 [2020-10-12 11:43:42,112 INFO L226 Difference]: Without dead ends: 4521 [2020-10-12 11:43:42,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-12 11:43:42,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4521 states. [2020-10-12 11:43:42,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4521 to 4489. [2020-10-12 11:43:42,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4489 states. [2020-10-12 11:43:42,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4489 states to 4489 states and 6140 transitions. [2020-10-12 11:43:42,261 INFO L78 Accepts]: Start accepts. Automaton has 4489 states and 6140 transitions. Word has length 830 [2020-10-12 11:43:42,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:43:42,263 INFO L479 AbstractCegarLoop]: Abstraction has 4489 states and 6140 transitions. [2020-10-12 11:43:42,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:43:42,263 INFO L276 IsEmpty]: Start isEmpty. Operand 4489 states and 6140 transitions. [2020-10-12 11:43:42,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 846 [2020-10-12 11:43:42,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:43:42,287 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:43:42,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 11:43:42,287 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:43:42,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:43:42,288 INFO L82 PathProgramCache]: Analyzing trace with hash 548584496, now seen corresponding path program 1 times [2020-10-12 11:43:42,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:43:42,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [454518740] [2020-10-12 11:43:42,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:43:42,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:43:42,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:42,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:42,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:47,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:47,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:43:47,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 865 [2020-10-12 11:43:47,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:43:47,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5105 [2020-10-12 11:43:47,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:43:47,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 11:43:47,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:43:47,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-12 11:43:47,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:43:47,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:43:47,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:43:47,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:47,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:43:47,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:43:47,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:43:47,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:43:47,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:43:47,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:43:47,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:43:47,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:43:47,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:43:47,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:43:47,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:43:47,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:47,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:47,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:43:47,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:43:47,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:43:47,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 11:43:47,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:43:47,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:43:47,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:43:47,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 11:43:47,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:43:47,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:43:47,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:43:47,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:47,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:47,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:43:47,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 11:43:47,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:43:47,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 11:43:47,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:43:47,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:43:47,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:43:47,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 11:43:47,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:43:47,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-12 11:43:47,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:43:47,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:47,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:43:47,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 11:43:47,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:43:47,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 11:43:47,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:43:47,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:43:47,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:43:47,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 11:43:47,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:43:48,096 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 64 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-12 11:43:48,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [454518740] [2020-10-12 11:43:48,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:43:48,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:43:48,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783802698] [2020-10-12 11:43:48,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:43:48,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:43:48,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:43:48,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:43:48,099 INFO L87 Difference]: Start difference. First operand 4489 states and 6140 transitions. Second operand 8 states. [2020-10-12 11:43:59,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:43:59,545 INFO L93 Difference]: Finished difference Result 10975 states and 16133 transitions. [2020-10-12 11:43:59,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 11:43:59,546 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 845 [2020-10-12 11:43:59,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:43:59,581 INFO L225 Difference]: With dead ends: 10975 [2020-10-12 11:43:59,581 INFO L226 Difference]: Without dead ends: 7219 [2020-10-12 11:43:59,592 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-12 11:43:59,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7219 states. [2020-10-12 11:43:59,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7219 to 7161. [2020-10-12 11:43:59,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7161 states. [2020-10-12 11:43:59,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7161 states to 7161 states and 9581 transitions. [2020-10-12 11:43:59,789 INFO L78 Accepts]: Start accepts. Automaton has 7161 states and 9581 transitions. Word has length 845 [2020-10-12 11:43:59,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:43:59,790 INFO L479 AbstractCegarLoop]: Abstraction has 7161 states and 9581 transitions. [2020-10-12 11:43:59,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:43:59,790 INFO L276 IsEmpty]: Start isEmpty. Operand 7161 states and 9581 transitions. [2020-10-12 11:43:59,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 896 [2020-10-12 11:43:59,818 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:43:59,819 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:43:59,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 11:43:59,819 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:43:59,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:43:59,820 INFO L82 PathProgramCache]: Analyzing trace with hash 223272789, now seen corresponding path program 1 times [2020-10-12 11:43:59,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:43:59,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [17038894] [2020-10-12 11:43:59,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:43:59,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:43:59,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:44:00,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:44:02,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:44:04,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:44:04,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 917 [2020-10-12 11:44:04,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:44:04,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-12 11:44:04,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:44:04,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 11:44:04,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-12 11:44:04,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 816 [2020-10-12 11:44:04,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:44:05,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:44:05,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:44:05,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:44:05,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:44:05,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:44:05,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:44:05,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 11:44:05,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:44:05,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:44:05,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:44:05,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:44:05,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:44:05,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:44:05,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:44:05,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:44:05,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:44:05,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:44:05,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:44:05,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 11:44:05,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:44:05,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:44:05,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:44:05,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:44:05,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:44:05,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:44:05,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:44:05,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:44:05,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:44:05,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 11:44:05,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:44:05,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 11:44:05,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:44:05,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:44:05,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:44:05,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:44:05,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:44:05,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-12 11:44:05,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:44:05,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:44:05,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:44:05,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-12 11:44:05,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:44:05,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-12 11:44:05,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:44:05,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:44:05,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:44:05,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-12 11:44:05,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:44:05,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-12 11:44:05,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:44:05,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:44:05,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:44:05,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:44:05,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 11:44:05,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:44:05,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 11:44:05,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:44:05,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:44:05,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:44:05,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 11:44:05,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:44:06,169 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 119 proven. 14 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-10-12 11:44:06,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [17038894] [2020-10-12 11:44:06,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:44:06,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:44:06,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031780111] [2020-10-12 11:44:06,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:44:06,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:44:06,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:44:06,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:44:06,173 INFO L87 Difference]: Start difference. First operand 7161 states and 9581 transitions. Second operand 7 states. [2020-10-12 11:44:17,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:44:17,012 INFO L93 Difference]: Finished difference Result 13658 states and 18542 transitions. [2020-10-12 11:44:17,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 11:44:17,013 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 895 [2020-10-12 11:44:17,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:44:17,041 INFO L225 Difference]: With dead ends: 13658 [2020-10-12 11:44:17,042 INFO L226 Difference]: Without dead ends: 7230 [2020-10-12 11:44:17,053 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-12 11:44:17,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7230 states. [2020-10-12 11:44:17,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7230 to 7175. [2020-10-12 11:44:17,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7175 states. [2020-10-12 11:44:17,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7175 states to 7175 states and 8930 transitions. [2020-10-12 11:44:17,199 INFO L78 Accepts]: Start accepts. Automaton has 7175 states and 8930 transitions. Word has length 895 [2020-10-12 11:44:17,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:44:17,201 INFO L479 AbstractCegarLoop]: Abstraction has 7175 states and 8930 transitions. [2020-10-12 11:44:17,201 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:44:17,201 INFO L276 IsEmpty]: Start isEmpty. Operand 7175 states and 8930 transitions. [2020-10-12 11:44:17,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 904 [2020-10-12 11:44:17,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:44:17,228 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:44:17,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 11:44:17,229 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:44:17,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:44:17,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1954723844, now seen corresponding path program 1 times [2020-10-12 11:44:17,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:44:17,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1580854816] [2020-10-12 11:44:17,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:44:17,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:44:17,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:44:17,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:44:18,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:44:21,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:44:22,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:44:22,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 923 [2020-10-12 11:44:22,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:44:22,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5075 [2020-10-12 11:44:22,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:44:22,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 11:44:22,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-12 11:44:22,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 769 [2020-10-12 11:44:22,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:44:25,856 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 37 [2020-10-12 11:44:26,081 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 38 [2020-10-12 11:44:26,289 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 36 [2020-10-12 11:44:26,564 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 32 [2020-10-12 11:44:26,878 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 31 [2020-10-12 11:44:27,234 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 34 [2020-10-12 11:44:27,416 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 29 [2020-10-12 11:44:28,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:44:28,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:44:28,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:44:28,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:44:28,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:44:28,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:44:28,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 11:44:28,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:44:28,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:44:28,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:44:28,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:44:28,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:44:28,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:44:28,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:44:28,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:44:28,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:44:28,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:44:28,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:44:28,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 11:44:28,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:44:28,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:44:28,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:44:28,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:44:28,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:44:28,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:44:28,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:44:28,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:44:28,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:44:28,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 11:44:28,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:44:28,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:44:28,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:44:28,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:44:28,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:44:28,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:44:28,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:44:28,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-12 11:44:28,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:44:28,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:44:28,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:44:28,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 11:44:28,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:44:28,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-12 11:44:28,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:44:28,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:44:28,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:44:28,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 11:44:28,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:44:33,264 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 103 proven. 3 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-10-12 11:44:33,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1580854816] [2020-10-12 11:44:33,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:44:33,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 11:44:33,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886487249] [2020-10-12 11:44:33,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 11:44:33,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:44:33,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 11:44:33,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2020-10-12 11:44:33,268 INFO L87 Difference]: Start difference. First operand 7175 states and 8930 transitions. Second operand 19 states. [2020-10-12 11:44:34,069 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-10-12 11:44:34,228 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-12 11:44:38,925 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-12 11:44:39,078 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-12 11:44:43,308 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-12 11:44:44,240 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-12 11:44:44,547 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-12 11:44:45,672 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-10-12 11:44:45,843 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-10-12 11:44:46,680 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-12 11:44:51,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:44:51,572 INFO L93 Difference]: Finished difference Result 14412 states and 18259 transitions. [2020-10-12 11:44:51,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 11:44:51,573 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 903 [2020-10-12 11:44:51,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:44:51,599 INFO L225 Difference]: With dead ends: 14412 [2020-10-12 11:44:51,599 INFO L226 Difference]: Without dead ends: 7970 [2020-10-12 11:44:51,612 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=173, Invalid=819, Unknown=0, NotChecked=0, Total=992 [2020-10-12 11:44:51,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7970 states. [2020-10-12 11:44:51,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7970 to 7935. [2020-10-12 11:44:51,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7935 states. [2020-10-12 11:44:51,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7935 states to 7935 states and 9703 transitions. [2020-10-12 11:44:51,753 INFO L78 Accepts]: Start accepts. Automaton has 7935 states and 9703 transitions. Word has length 903 [2020-10-12 11:44:51,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:44:51,755 INFO L479 AbstractCegarLoop]: Abstraction has 7935 states and 9703 transitions. [2020-10-12 11:44:51,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 11:44:51,755 INFO L276 IsEmpty]: Start isEmpty. Operand 7935 states and 9703 transitions. [2020-10-12 11:44:51,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 905 [2020-10-12 11:44:51,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:44:51,780 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:44:51,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 11:44:51,781 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:44:51,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:44:51,782 INFO L82 PathProgramCache]: Analyzing trace with hash 365017706, now seen corresponding path program 1 times [2020-10-12 11:44:51,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:44:51,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [429314560] [2020-10-12 11:44:51,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:44:51,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:44:51,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:44:52,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:44:56,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:44:56,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 924 [2020-10-12 11:44:56,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:44:56,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-12 11:44:56,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:44:56,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 11:44:56,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-10-12 11:44:56,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 593 [2020-10-12 11:44:56,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:44:58,611 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 36 [2020-10-12 11:44:58,760 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 36 [2020-10-12 11:44:58,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:44:58,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:44:58,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:44:58,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:44:58,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:44:58,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:44:58,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 11:44:58,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:44:58,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:44:58,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:44:58,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:44:58,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:44:58,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:44:58,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:44:58,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:44:58,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:44:58,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:44:58,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:44:58,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 11:44:58,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:44:58,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:44:58,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:44:58,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:44:58,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:44:58,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:44:58,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:44:58,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:44:58,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:44:58,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 11:44:58,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:44:58,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 11:44:58,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:44:58,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:44:58,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:44:58,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:44:58,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:44:58,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-12 11:44:58,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:44:58,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:44:58,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:44:58,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 11:44:58,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:44:58,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-12 11:44:58,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:44:58,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:44:58,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:44:58,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-12 11:44:58,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:45:03,732 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 104 proven. 3 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-10-12 11:45:03,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [429314560] [2020-10-12 11:45:03,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:45:03,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 11:45:03,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254532923] [2020-10-12 11:45:03,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 11:45:03,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:45:03,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 11:45:03,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-10-12 11:45:03,735 INFO L87 Difference]: Start difference. First operand 7935 states and 9703 transitions. Second operand 17 states. [2020-10-12 11:45:05,367 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-12 11:45:05,766 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-12 11:45:06,352 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-12 11:45:07,568 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-12 11:45:09,581 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-12 11:45:10,529 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 90 [2020-10-12 11:45:13,043 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-10-12 11:45:13,213 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-10-12 11:45:20,009 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-12 11:45:20,202 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 91