/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_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 11:34:32,264 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 11:34:32,268 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 11:34:32,310 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 11:34:32,311 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 11:34:32,322 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 11:34:32,324 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 11:34:32,328 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 11:34:32,330 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 11:34:32,333 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 11:34:32,334 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 11:34:32,335 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 11:34:32,335 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 11:34:32,338 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 11:34:32,341 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 11:34:32,342 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 11:34:32,344 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 11:34:32,345 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 11:34:32,346 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 11:34:32,356 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 11:34:32,358 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 11:34:32,359 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 11:34:32,360 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 11:34:32,361 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 11:34:32,364 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 11:34:32,364 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 11:34:32,365 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 11:34:32,368 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 11:34:32,368 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 11:34:32,370 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 11:34:32,371 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 11:34:32,371 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 11:34:32,372 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 11:34:32,373 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 11:34:32,374 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 11:34:32,374 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 11:34:32,375 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 11:34:32,375 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 11:34:32,375 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 11:34:32,376 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 11:34:32,378 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 11:34:32,378 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 11:34:32,421 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 11:34:32,422 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 11:34:32,424 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 11:34:32,424 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 11:34:32,424 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 11:34:32,425 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 11:34:32,425 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 11:34:32,425 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 11:34:32,426 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 11:34:32,426 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 11:34:32,427 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 11:34:32,427 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 11:34:32,427 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 11:34:32,428 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 11:34:32,428 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 11:34:32,428 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 11:34:32,429 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 11:34:32,429 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 11:34:32,429 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 11:34:32,429 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 11:34:32,429 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 11:34:32,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 11:34:32,430 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 11:34:32,430 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 11:34:32,430 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 11:34:32,430 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 11:34:32,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 11:34:32,431 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 11:34:32,431 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 11:34:32,431 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 11:34:32,731 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 11:34:32,744 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 11:34:32,747 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 11:34:32,749 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 11:34:32,749 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 11:34:32,750 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label21.c [2020-10-12 11:34:32,816 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/286f9aacf/b9be72c52b4146e7a7276c94f059f601/FLAGebd6d3bc5 [2020-10-12 11:34:33,605 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 11:34:33,606 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label21.c [2020-10-12 11:34:33,638 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/286f9aacf/b9be72c52b4146e7a7276c94f059f601/FLAGebd6d3bc5 [2020-10-12 11:34:34,137 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/286f9aacf/b9be72c52b4146e7a7276c94f059f601 [2020-10-12 11:34:34,146 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 11:34:34,148 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 11:34:34,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 11:34:34,149 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 11:34:34,153 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 11:34:34,154 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:34:34" (1/1) ... [2020-10-12 11:34:34,157 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d5d5e76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:34:34, skipping insertion in model container [2020-10-12 11:34:34,158 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:34:34" (1/1) ... [2020-10-12 11:34:34,166 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 11:34:34,345 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 11:34:35,849 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:34:35,861 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 11:34:36,605 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:34:36,637 INFO L208 MainTranslator]: Completed translation [2020-10-12 11:34:36,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:34:36 WrapperNode [2020-10-12 11:34:36,639 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 11:34:36,640 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 11:34:36,641 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 11:34:36,641 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 11:34:36,656 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:34:36" (1/1) ... [2020-10-12 11:34:36,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:34:36" (1/1) ... [2020-10-12 11:34:36,702 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:34:36" (1/1) ... [2020-10-12 11:34:36,702 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:34:36" (1/1) ... [2020-10-12 11:34:36,799 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:34:36" (1/1) ... [2020-10-12 11:34:36,827 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:34:36" (1/1) ... [2020-10-12 11:34:36,847 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:34:36" (1/1) ... [2020-10-12 11:34:36,872 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 11:34:36,872 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 11:34:36,872 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 11:34:36,873 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 11:34:36,874 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:34:36" (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 11:34:36,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 11:34:36,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 11:34:36,957 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 11:34:36,958 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 11:34:36,958 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 11:34:36,958 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 11:34:36,959 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 11:34:36,960 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 11:34:36,960 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 11:34:36,960 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 11:34:36,960 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 11:34:36,960 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 11:34:36,961 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 11:34:36,961 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 11:34:36,961 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 11:34:36,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 11:34:36,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 11:34:41,306 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 11:34:41,306 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 11:34:41,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:34:41 BoogieIcfgContainer [2020-10-12 11:34:41,316 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 11:34:41,318 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 11:34:41,318 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 11:34:41,322 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 11:34:41,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 11:34:34" (1/3) ... [2020-10-12 11:34:41,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c09b898 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:34:41, skipping insertion in model container [2020-10-12 11:34:41,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:34:36" (2/3) ... [2020-10-12 11:34:41,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c09b898 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:34:41, skipping insertion in model container [2020-10-12 11:34:41,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:34:41" (3/3) ... [2020-10-12 11:34:41,325 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label21.c [2020-10-12 11:34:41,337 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 11:34:41,346 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 11:34:41,360 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 11:34:41,390 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 11:34:41,390 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 11:34:41,391 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 11:34:41,391 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 11:34:41,391 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 11:34:41,391 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 11:34:41,391 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 11:34:41,391 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 11:34:41,428 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2020-10-12 11:34:41,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 809 [2020-10-12 11:34:41,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:34:41,490 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:34:41,490 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:34:41,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:34:41,497 INFO L82 PathProgramCache]: Analyzing trace with hash 449962387, now seen corresponding path program 1 times [2020-10-12 11:34:41,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:34:41,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1421322178] [2020-10-12 11:34:41,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:34:42,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:34:42,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:34:46,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:34:47,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:34:47,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 822 [2020-10-12 11:34:47,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:34:47,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5117 [2020-10-12 11:34:47,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:34:47,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 11:34:47,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:34:47,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 742 [2020-10-12 11:34:47,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 11:34:49,686 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2020-10-12 11:34:49,817 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2020-10-12 11:34:50,054 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 47 [2020-10-12 11:34:50,247 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2020-10-12 11:34:50,383 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 40 [2020-10-12 11:34:51,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:34:51,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:34:51,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:34:51,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:34:51,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:34:51,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:34:51,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 11:34:51,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:34:51,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:34:51,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:34:51,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:34:51,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:34:55,979 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 11:34:55,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1421322178] [2020-10-12 11:34:55,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 11:34:55,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-12 11:34:55,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121687313] [2020-10-12 11:34:55,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 11:34:55,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:34:55,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 11:34:56,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2020-10-12 11:34:56,002 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 18 states. [2020-10-12 11:34:56,374 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-12 11:34:56,526 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-12 11:34:56,727 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-12 11:34:57,093 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-12 11:34:57,371 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-12 11:34:59,457 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-12 11:34:59,787 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 107 [2020-10-12 11:35:01,914 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 91 [2020-10-12 11:35:03,129 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 86 [2020-10-12 11:35:12,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:35:12,701 INFO L93 Difference]: Finished difference Result 2548 states and 4905 transitions. [2020-10-12 11:35:12,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 11:35:12,708 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 808 [2020-10-12 11:35:12,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:35:12,779 INFO L225 Difference]: With dead ends: 2548 [2020-10-12 11:35:12,779 INFO L226 Difference]: Without dead ends: 1580 [2020-10-12 11:35:12,794 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=186, Invalid=870, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 11:35:12,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2020-10-12 11:35:12,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 1580. [2020-10-12 11:35:12,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-10-12 11:35:12,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 2339 transitions. [2020-10-12 11:35:12,993 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 2339 transitions. Word has length 808 [2020-10-12 11:35:12,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:35:12,997 INFO L479 AbstractCegarLoop]: Abstraction has 1580 states and 2339 transitions. [2020-10-12 11:35:12,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 11:35:12,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 2339 transitions. [2020-10-12 11:35:13,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 828 [2020-10-12 11:35:13,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:35:13,038 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:35:13,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 11:35:13,039 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:35:13,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:35:13,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1645114532, now seen corresponding path program 1 times [2020-10-12 11:35:13,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:35:13,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974361018] [2020-10-12 11:35:13,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:35:13,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:35:13,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:35:14,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:35:18,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:35:18,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 843 [2020-10-12 11:35:18,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:35:18,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-12 11:35:18,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:35:18,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 11:35:18,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-12 11:35:18,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 705 [2020-10-12 11:35:18,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:35:20,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:35:20,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:35:20,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:35:20,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:35:20,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:35:20,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:35:20,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 11:35:20,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:35:20,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:35:20,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:35:20,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:35:20,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:35:20,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:35:20,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:35:20,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:35:20,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:35:20,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:35:20,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:35:20,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 11:35:20,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:35:20,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:35:20,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:35:20,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 11:35:20,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:35:23,969 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 11:35:23,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974361018] [2020-10-12 11:35:23,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:35:23,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 11:35:23,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219270183] [2020-10-12 11:35:23,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 11:35:23,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:35:23,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 11:35:23,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-10-12 11:35:23,974 INFO L87 Difference]: Start difference. First operand 1580 states and 2339 transitions. Second operand 19 states. [2020-10-12 11:35:28,402 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 92 [2020-10-12 11:35:28,982 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2020-10-12 11:35:29,835 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 83 [2020-10-12 11:35:38,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:35:38,650 INFO L93 Difference]: Finished difference Result 3123 states and 5328 transitions. [2020-10-12 11:35:38,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 11:35:38,651 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 827 [2020-10-12 11:35:38,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:35:38,665 INFO L225 Difference]: With dead ends: 3123 [2020-10-12 11:35:38,665 INFO L226 Difference]: Without dead ends: 2276 [2020-10-12 11:35:38,669 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=179, Invalid=813, Unknown=0, NotChecked=0, Total=992 [2020-10-12 11:35:38,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2276 states. [2020-10-12 11:35:38,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2276 to 2276. [2020-10-12 11:35:38,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2276 states. [2020-10-12 11:35:38,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2276 states to 2276 states and 3045 transitions. [2020-10-12 11:35:38,732 INFO L78 Accepts]: Start accepts. Automaton has 2276 states and 3045 transitions. Word has length 827 [2020-10-12 11:35:38,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:35:38,734 INFO L479 AbstractCegarLoop]: Abstraction has 2276 states and 3045 transitions. [2020-10-12 11:35:38,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 11:35:38,734 INFO L276 IsEmpty]: Start isEmpty. Operand 2276 states and 3045 transitions. [2020-10-12 11:35:38,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 835 [2020-10-12 11:35:38,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:35:38,746 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:35:38,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 11:35:38,747 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:35:38,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:35:38,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1256491006, now seen corresponding path program 1 times [2020-10-12 11:35:38,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:35:38,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1146669972] [2020-10-12 11:35:38,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:35:38,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:35:39,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:35:39,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:35:40,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:35:43,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:35:43,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 850 [2020-10-12 11:35:43,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:35:43,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-12 11:35:43,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:35:43,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 11:35:43,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-12 11:35:43,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 517 [2020-10-12 11:35:43,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:35:45,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:35:45,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:35:45,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:35:45,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:35:45,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:35:45,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:35:45,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 11:35:45,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:35:45,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:35:45,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:35:45,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:35:45,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:35:45,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:35:45,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:35:45,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:35:45,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:35:45,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-12 11:35:45,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:35:45,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 11:35:45,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:35:45,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:35:45,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:35:45,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 11:35:45,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:35:48,813 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 11:35:48,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1146669972] [2020-10-12 11:35:48,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:35:48,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 11:35:48,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696975744] [2020-10-12 11:35:48,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 11:35:48,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:35:48,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 11:35:48,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2020-10-12 11:35:48,816 INFO L87 Difference]: Start difference. First operand 2276 states and 3045 transitions. Second operand 17 states. [2020-10-12 11:35:54,362 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-12 11:35:54,636 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 95 [2020-10-12 11:35:55,049 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 92 [2020-10-12 11:35:56,201 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 91 [2020-10-12 11:35:59,563 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 87 [2020-10-12 11:35:59,922 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-10-12 11:36:00,127 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-10-12 11:36:04,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:36:04,577 INFO L93 Difference]: Finished difference Result 4329 states and 6367 transitions. [2020-10-12 11:36:04,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 11:36:04,581 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 834 [2020-10-12 11:36:04,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:36:04,595 INFO L225 Difference]: With dead ends: 4329 [2020-10-12 11:36:04,595 INFO L226 Difference]: Without dead ends: 2786 [2020-10-12 11:36:04,600 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=149, Invalid=607, Unknown=0, NotChecked=0, Total=756 [2020-10-12 11:36:04,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2786 states. [2020-10-12 11:36:04,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2786 to 2786. [2020-10-12 11:36:04,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2786 states. [2020-10-12 11:36:04,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2786 states to 2786 states and 3564 transitions. [2020-10-12 11:36:04,663 INFO L78 Accepts]: Start accepts. Automaton has 2786 states and 3564 transitions. Word has length 834 [2020-10-12 11:36:04,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:36:04,665 INFO L479 AbstractCegarLoop]: Abstraction has 2786 states and 3564 transitions. [2020-10-12 11:36:04,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 11:36:04,665 INFO L276 IsEmpty]: Start isEmpty. Operand 2786 states and 3564 transitions. [2020-10-12 11:36:04,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 845 [2020-10-12 11:36:04,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:36:04,678 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:36:04,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 11:36:04,679 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:36:04,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:36:04,679 INFO L82 PathProgramCache]: Analyzing trace with hash -741237129, now seen corresponding path program 1 times [2020-10-12 11:36:04,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:36:04,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [450926337] [2020-10-12 11:36:04,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:36:04,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:04,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:05,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:05,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:09,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:09,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 862 [2020-10-12 11:36:09,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:36:09,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-12 11:36:09,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:09,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 11:36:09,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:36:09,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 856 [2020-10-12 11:36:09,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:36:10,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:36:10,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:10,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:10,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:10,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:36:10,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:36:10,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:36:10,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:10,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:36:10,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:36:10,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:36:10,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:36:10,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:36:10,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:10,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:10,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:10,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:10,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:36:10,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:36:10,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 11:36:10,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:10,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:36:10,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:36:10,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 11:36:10,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:36:10,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:36:10,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:10,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:10,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:10,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:10,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 11:36:10,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:36:10,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 11:36:10,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:10,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:36:10,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:36:10,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 11:36:10,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:36:10,900 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 24 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 11:36:10,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [450926337] [2020-10-12 11:36:10,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:36:10,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:36:10,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085311905] [2020-10-12 11:36:10,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:36:10,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:36:10,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:36:10,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:36:10,903 INFO L87 Difference]: Start difference. First operand 2786 states and 3564 transitions. Second operand 8 states. [2020-10-12 11:36:24,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:36:24,383 INFO L93 Difference]: Finished difference Result 6574 states and 9697 transitions. [2020-10-12 11:36:24,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 11:36:24,384 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 844 [2020-10-12 11:36:24,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:36:24,410 INFO L225 Difference]: With dead ends: 6574 [2020-10-12 11:36:24,410 INFO L226 Difference]: Without dead ends: 4521 [2020-10-12 11:36:24,416 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2020-10-12 11:36:24,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4521 states. [2020-10-12 11:36:24,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4521 to 4487. [2020-10-12 11:36:24,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4487 states. [2020-10-12 11:36:24,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4487 states to 4487 states and 6126 transitions. [2020-10-12 11:36:24,530 INFO L78 Accepts]: Start accepts. Automaton has 4487 states and 6126 transitions. Word has length 844 [2020-10-12 11:36:24,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:36:24,532 INFO L479 AbstractCegarLoop]: Abstraction has 4487 states and 6126 transitions. [2020-10-12 11:36:24,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:36:24,532 INFO L276 IsEmpty]: Start isEmpty. Operand 4487 states and 6126 transitions. [2020-10-12 11:36:24,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 918 [2020-10-12 11:36:24,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:36:24,562 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, 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] [2020-10-12 11:36:24,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 11:36:24,563 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:36:24,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:36:24,563 INFO L82 PathProgramCache]: Analyzing trace with hash 841736883, now seen corresponding path program 1 times [2020-10-12 11:36:24,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:36:24,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2091727376] [2020-10-12 11:36:24,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:36:24,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:24,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:24,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:25,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:25,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:29,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:29,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 939 [2020-10-12 11:36:29,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:36:29,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 11:36:29,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:29,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 11:36:29,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:36:29,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-12 11:36:29,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:36:29,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:36:29,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:29,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:29,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:29,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:36:29,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:36:29,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 11:36:29,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:29,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:36:29,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:36:29,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:36:29,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:36:29,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:36:29,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:29,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:29,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:29,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:29,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:36:29,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:36:29,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-12 11:36:29,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:29,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:36:29,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:36:29,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 11:36:29,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:36:29,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:36:29,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:29,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:29,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:29,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:29,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 11:36:29,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:36:29,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-12 11:36:29,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:29,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:36:29,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:36:29,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 11:36:29,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:36:29,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-12 11:36:29,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:29,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:29,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:29,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 11:36:29,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:36:29,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 11:36:29,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:29,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:36:29,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:36:29,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 11:36:29,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:36:29,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-12 11:36:29,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:29,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:30,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:30,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-12 11:36:30,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:36:30,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 11:36:30,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:30,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:36:30,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-12 11:36:30,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:36:30,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:36:30,351 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 107 proven. 40 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-10-12 11:36:30,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2091727376] [2020-10-12 11:36:30,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:36:30,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:36:30,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158219224] [2020-10-12 11:36:30,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:36:30,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:36:30,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:36:30,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:36:30,354 INFO L87 Difference]: Start difference. First operand 4487 states and 6126 transitions. Second operand 7 states. [2020-10-12 11:36:40,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:36:40,904 INFO L93 Difference]: Finished difference Result 10973 states and 16088 transitions. [2020-10-12 11:36:40,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 11:36:40,905 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 917 [2020-10-12 11:36:40,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:36:40,936 INFO L225 Difference]: With dead ends: 10973 [2020-10-12 11:36:40,937 INFO L226 Difference]: Without dead ends: 7219 [2020-10-12 11:36:40,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 11:36:40,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7219 states. [2020-10-12 11:36:41,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7219 to 7150. [2020-10-12 11:36:41,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7150 states. [2020-10-12 11:36:41,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7150 states to 7150 states and 9557 transitions. [2020-10-12 11:36:41,129 INFO L78 Accepts]: Start accepts. Automaton has 7150 states and 9557 transitions. Word has length 917 [2020-10-12 11:36:41,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:36:41,130 INFO L479 AbstractCegarLoop]: Abstraction has 7150 states and 9557 transitions. [2020-10-12 11:36:41,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:36:41,130 INFO L276 IsEmpty]: Start isEmpty. Operand 7150 states and 9557 transitions. [2020-10-12 11:36:41,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 953 [2020-10-12 11:36:41,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:36:41,161 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 11:36:41,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 11:36:41,161 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:36:41,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:36:41,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1534520673, now seen corresponding path program 1 times [2020-10-12 11:36:41,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:36:41,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [694665461] [2020-10-12 11:36:41,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:36:41,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:41,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:42,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:43,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:45,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:46,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:46,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 970 [2020-10-12 11:36:46,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:36:46,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-12 11:36:46,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:46,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 11:36:46,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 156 [2020-10-12 11:36:46,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 713 [2020-10-12 11:36:46,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:36:48,237 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 27 [2020-10-12 11:36:48,405 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 34 [2020-10-12 11:36:48,569 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 30 [2020-10-12 11:36:49,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:36:49,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:49,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:49,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:49,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:36:49,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:36:49,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 11:36:49,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:49,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:36:49,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:36:49,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:36:49,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:36:49,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:36:49,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:49,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:49,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:49,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:36:49,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:36:49,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:36:49,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:49,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:36:49,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:36:49,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:36:49,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:36:49,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:36:49,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:49,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:49,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:49,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-12 11:36:49,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:36:49,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-12 11:36:49,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:49,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:36:49,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:36:49,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-12 11:36:49,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:36:53,707 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 139 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-12 11:36:53,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [694665461] [2020-10-12 11:36:53,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:36:53,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 11:36:53,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960373921] [2020-10-12 11:36:53,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 11:36:53,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:36:53,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 11:36:53,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-10-12 11:36:53,711 INFO L87 Difference]: Start difference. First operand 7150 states and 9557 transitions. Second operand 19 states. [2020-10-12 11:36:59,500 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2020-10-12 11:37:01,815 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 84 [2020-10-12 11:37:02,579 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2020-10-12 11:37:02,805 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2020-10-12 11:37:06,071 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 88 [2020-10-12 11:37:07,723 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2020-10-12 11:37:09,591 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2020-10-12 11:37:09,825 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2020-10-12 11:37:10,389 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-10-12 11:37:16,186 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-10-12 11:37:16,387 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-10-12 11:37:17,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:37:17,727 INFO L93 Difference]: Finished difference Result 14309 states and 19438 transitions. [2020-10-12 11:37:17,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 11:37:17,728 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 952 [2020-10-12 11:37:17,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:37:17,760 INFO L225 Difference]: With dead ends: 14309 [2020-10-12 11:37:17,761 INFO L226 Difference]: Without dead ends: 7892 [2020-10-12 11:37:17,774 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=161, Invalid=895, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 11:37:17,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7892 states. [2020-10-12 11:37:17,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7892 to 7854. [2020-10-12 11:37:17,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7854 states. [2020-10-12 11:37:17,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7854 states to 7854 states and 10276 transitions. [2020-10-12 11:37:17,956 INFO L78 Accepts]: Start accepts. Automaton has 7854 states and 10276 transitions. Word has length 952 [2020-10-12 11:37:17,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:37:17,957 INFO L479 AbstractCegarLoop]: Abstraction has 7854 states and 10276 transitions. [2020-10-12 11:37:17,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 11:37:17,957 INFO L276 IsEmpty]: Start isEmpty. Operand 7854 states and 10276 transitions. [2020-10-12 11:37:17,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 968 [2020-10-12 11:37:17,986 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:37:17,987 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 11:37:17,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 11:37:17,988 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:37:17,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:37:17,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1209362648, now seen corresponding path program 1 times [2020-10-12 11:37:17,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:37:17,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1105698830] [2020-10-12 11:37:17,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:37:18,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:18,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:18,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:18,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:22,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:23,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:23,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 991 [2020-10-12 11:37:23,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:37:23,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5150 [2020-10-12 11:37:23,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:23,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 11:37:23,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-12 11:37:23,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 813 [2020-10-12 11:37:23,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:23,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:37:23,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:23,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:23,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:23,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:37:23,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:37:23,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 11:37:23,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:23,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:37:23,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:37:23,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:37:23,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:23,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:37:23,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:23,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:23,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:23,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:37:23,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:37:23,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:37:23,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:23,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:37:23,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:37:23,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:37:23,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:23,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:37:23,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:23,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:23,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:23,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 11:37:23,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:37:23,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:37:23,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:23,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:37:23,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:37:23,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:37:23,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:23,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-12 11:37:23,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:23,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:23,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:23,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-12 11:37:23,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:37:23,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 11:37:23,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:23,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:37:23,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:37:23,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:37:23,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:23,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-12 11:37:23,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:23,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:23,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:23,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 11:37:23,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:37:23,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 11:37:23,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:23,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:37:23,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:37:23,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:37:23,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:23,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-12 11:37:23,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:23,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:23,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:23,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-12 11:37:23,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:37:23,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 11:37:23,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:23,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:37:23,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:37:23,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-12 11:37:23,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:24,340 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 151 proven. 5 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-10-12 11:37:24,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1105698830] [2020-10-12 11:37:24,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:37:24,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 11:37:24,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961734596] [2020-10-12 11:37:24,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 11:37:24,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:37:24,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 11:37:24,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:37:24,344 INFO L87 Difference]: Start difference. First operand 7854 states and 10276 transitions. Second operand 6 states. [2020-10-12 11:37:37,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:37:37,804 INFO L93 Difference]: Finished difference Result 25271 states and 35956 transitions. [2020-10-12 11:37:37,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 11:37:37,805 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 967 [2020-10-12 11:37:37,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:37:37,863 INFO L225 Difference]: With dead ends: 25271 [2020-10-12 11:37:37,864 INFO L226 Difference]: Without dead ends: 18150 [2020-10-12 11:37:37,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:37:37,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18150 states. [2020-10-12 11:37:38,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18150 to 18140. [2020-10-12 11:37:38,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18140 states. [2020-10-12 11:37:38,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18140 states to 18140 states and 24245 transitions. [2020-10-12 11:37:38,254 INFO L78 Accepts]: Start accepts. Automaton has 18140 states and 24245 transitions. Word has length 967 [2020-10-12 11:37:38,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:37:38,254 INFO L479 AbstractCegarLoop]: Abstraction has 18140 states and 24245 transitions. [2020-10-12 11:37:38,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 11:37:38,255 INFO L276 IsEmpty]: Start isEmpty. Operand 18140 states and 24245 transitions. [2020-10-12 11:37:38,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 973 [2020-10-12 11:37:38,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:37:38,308 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2020-10-12 11:37:38,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 11:37:38,308 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:37:38,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:37:38,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1074878197, now seen corresponding path program 1 times [2020-10-12 11:37:38,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:37:38,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1313062910] [2020-10-12 11:37:38,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:37:38,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:38,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:38,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:41,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:43,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:43,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 994 [2020-10-12 11:37:43,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:37:43,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5266 [2020-10-12 11:37:43,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:43,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 11:37:43,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-12 11:37:43,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 893 [2020-10-12 11:37:43,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:43,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:37:43,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:43,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:43,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:43,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:37:43,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:37:43,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 11:37:43,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:43,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:37:43,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:37:43,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:37:43,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:43,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:37:43,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:43,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:43,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:43,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:37:43,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:37:43,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 11:37:43,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:43,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:37:43,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:37:43,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:37:43,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:43,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:37:43,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:43,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:43,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:43,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 11:37:43,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:37:43,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 11:37:43,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:43,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:37:43,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:37:43,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:37:43,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:43,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-12 11:37:44,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:44,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:44,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:44,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-12 11:37:44,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:37:44,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-12 11:37:44,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:44,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:37:44,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:37:44,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-12 11:37:44,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:44,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-12 11:37:44,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:44,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:44,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:44,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 11:37:44,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:37:44,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-12 11:37:44,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:44,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:37:44,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:37:44,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-12 11:37:44,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:45,226 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 231 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-10-12 11:37:45,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1313062910] [2020-10-12 11:37:45,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:37:45,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 11:37:45,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787614992] [2020-10-12 11:37:45,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 11:37:45,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:37:45,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 11:37:45,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:37:45,228 INFO L87 Difference]: Start difference. First operand 18140 states and 24245 transitions. Second operand 6 states. [2020-10-12 11:37:54,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:37:54,129 INFO L93 Difference]: Finished difference Result 35627 states and 48082 transitions. [2020-10-12 11:37:54,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 11:37:54,133 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 972 [2020-10-12 11:37:54,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:37:54,208 INFO L225 Difference]: With dead ends: 35627 [2020-10-12 11:37:54,209 INFO L226 Difference]: Without dead ends: 18220 [2020-10-12 11:37:54,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:37:54,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18220 states. [2020-10-12 11:37:54,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18220 to 18162. [2020-10-12 11:37:54,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18162 states. [2020-10-12 11:37:54,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18162 states to 18162 states and 22501 transitions. [2020-10-12 11:37:54,626 INFO L78 Accepts]: Start accepts. Automaton has 18162 states and 22501 transitions. Word has length 972 [2020-10-12 11:37:54,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:37:54,628 INFO L479 AbstractCegarLoop]: Abstraction has 18162 states and 22501 transitions. [2020-10-12 11:37:54,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 11:37:54,628 INFO L276 IsEmpty]: Start isEmpty. Operand 18162 states and 22501 transitions. [2020-10-12 11:37:54,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1123 [2020-10-12 11:37:54,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:37:54,686 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 11:37:54,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 11:37:54,686 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:37:54,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:37:54,687 INFO L82 PathProgramCache]: Analyzing trace with hash 840828915, now seen corresponding path program 1 times [2020-10-12 11:37:54,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:37:54,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [902364348] [2020-10-12 11:37:54,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:37:54,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:55,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:56,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:58,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:59,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:38:00,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:38:00,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1142 [2020-10-12 11:38:00,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:38:00,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-12 11:38:00,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:38:00,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 11:38:00,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 325 [2020-10-12 11:38:00,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 625 [2020-10-12 11:38:00,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:38:00,951 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2020-10-12 11:38:01,082 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2020-10-12 11:38:01,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:38:01,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:38:01,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:38:01,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:38:01,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:38:01,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:38:01,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 11:38:01,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:38:01,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:38:01,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:38:01,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:38:01,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:38:01,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:38:01,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:38:01,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:38:01,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:38:01,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-12 11:38:01,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:38:01,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 11:38:01,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:38:01,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:38:01,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:38:01,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:38:01,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:38:01,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-12 11:38:01,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:38:01,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:38:01,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:38:01,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 291 [2020-10-12 11:38:01,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:38:01,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-12 11:38:01,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:38:01,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:38:01,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:38:01,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 282 [2020-10-12 11:38:01,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:38:02,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-12 11:38:02,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:38:02,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:38:02,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:38:02,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 11:38:02,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:38:02,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-12 11:38:02,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:38:02,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:38:02,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:38:02,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 11:38:02,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:38:07,317 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 305 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-12 11:38:07,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [902364348] [2020-10-12 11:38:07,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:38:07,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 11:38:07,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481189496] [2020-10-12 11:38:07,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 11:38:07,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:38:07,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 11:38:07,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2020-10-12 11:38:07,320 INFO L87 Difference]: Start difference. First operand 18162 states and 22501 transitions. Second operand 17 states. [2020-10-12 11:38:12,438 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-10-12 11:38:12,601 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 94