/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/Problem06_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 12:14:56,399 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 12:14:56,401 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 12:14:56,424 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 12:14:56,424 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 12:14:56,425 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 12:14:56,427 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 12:14:56,428 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 12:14:56,430 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 12:14:56,431 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 12:14:56,432 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 12:14:56,433 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 12:14:56,433 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 12:14:56,434 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 12:14:56,435 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 12:14:56,436 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 12:14:56,437 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 12:14:56,438 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 12:14:56,439 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 12:14:56,441 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 12:14:56,443 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 12:14:56,444 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 12:14:56,445 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 12:14:56,446 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 12:14:56,448 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 12:14:56,448 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 12:14:56,449 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 12:14:56,450 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 12:14:56,450 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 12:14:56,451 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 12:14:56,451 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 12:14:56,452 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 12:14:56,453 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 12:14:56,453 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 12:14:56,454 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 12:14:56,454 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 12:14:56,455 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 12:14:56,455 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 12:14:56,455 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 12:14:56,456 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 12:14:56,457 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 12:14:56,458 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 12:14:56,501 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 12:14:56,502 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 12:14:56,505 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 12:14:56,506 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 12:14:56,506 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 12:14:56,506 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 12:14:56,506 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 12:14:56,506 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 12:14:56,510 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 12:14:56,510 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 12:14:56,511 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 12:14:56,511 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 12:14:56,511 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 12:14:56,511 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 12:14:56,511 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 12:14:56,511 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 12:14:56,512 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 12:14:56,512 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 12:14:56,512 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 12:14:56,512 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 12:14:56,512 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 12:14:56,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 12:14:56,513 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 12:14:56,515 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 12:14:56,515 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 12:14:56,516 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 12:14:56,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 12:14:56,516 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 12:14:56,516 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 12:14:56,516 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 12:14:56,845 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 12:14:56,862 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 12:14:56,867 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 12:14:56,869 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 12:14:56,871 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 12:14:56,872 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label44.c [2020-10-12 12:14:56,937 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63076cf9d/015f79216e7e4381997d248345c7f5af/FLAGdcac9c481 [2020-10-12 12:14:57,778 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 12:14:57,780 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label44.c [2020-10-12 12:14:57,829 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63076cf9d/015f79216e7e4381997d248345c7f5af/FLAGdcac9c481 [2020-10-12 12:14:58,222 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63076cf9d/015f79216e7e4381997d248345c7f5af [2020-10-12 12:14:58,233 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 12:14:58,235 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 12:14:58,236 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 12:14:58,236 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 12:14:58,239 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 12:14:58,240 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:14:58" (1/1) ... [2020-10-12 12:14:58,243 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32e3ee29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:14:58, skipping insertion in model container [2020-10-12 12:14:58,244 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:14:58" (1/1) ... [2020-10-12 12:14:58,252 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 12:14:58,487 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 12:15:00,820 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 12:15:00,826 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 12:15:01,865 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 12:15:01,920 INFO L208 MainTranslator]: Completed translation [2020-10-12 12:15:01,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:15:01 WrapperNode [2020-10-12 12:15:01,921 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 12:15:01,922 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 12:15:01,922 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 12:15:01,922 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 12:15:01,937 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:15:01" (1/1) ... [2020-10-12 12:15:01,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:15:01" (1/1) ... [2020-10-12 12:15:02,008 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:15:01" (1/1) ... [2020-10-12 12:15:02,008 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:15:01" (1/1) ... [2020-10-12 12:15:02,147 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:15:01" (1/1) ... [2020-10-12 12:15:02,180 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:15:01" (1/1) ... [2020-10-12 12:15:02,213 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:15:01" (1/1) ... [2020-10-12 12:15:02,256 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 12:15:02,257 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 12:15:02,257 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 12:15:02,257 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 12:15:02,258 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:15:01" (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 12:15:02,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 12:15:02,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 12:15:02,341 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 12:15:02,342 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 12:15:02,342 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 12:15:02,342 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 12:15:02,343 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-12 12:15:02,343 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 12:15:02,344 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 12:15:02,344 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 12:15:02,344 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 12:15:02,344 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 12:15:02,345 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-12 12:15:02,345 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 12:15:02,345 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 12:15:02,346 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 12:15:02,346 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 12:15:02,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 12:15:02,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 12:15:09,242 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 12:15:09,242 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 12:15:09,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:15:09 BoogieIcfgContainer [2020-10-12 12:15:09,266 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 12:15:09,269 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 12:15:09,269 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 12:15:09,273 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 12:15:09,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 12:14:58" (1/3) ... [2020-10-12 12:15:09,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2766ce8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:15:09, skipping insertion in model container [2020-10-12 12:15:09,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:15:01" (2/3) ... [2020-10-12 12:15:09,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2766ce8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:15:09, skipping insertion in model container [2020-10-12 12:15:09,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:15:09" (3/3) ... [2020-10-12 12:15:09,279 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem06_label44.c [2020-10-12 12:15:09,293 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 12:15:09,313 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 12:15:09,328 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 12:15:09,360 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 12:15:09,361 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 12:15:09,361 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 12:15:09,361 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 12:15:09,361 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 12:15:09,361 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 12:15:09,361 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 12:15:09,361 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 12:15:09,409 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states. [2020-10-12 12:15:09,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 948 [2020-10-12 12:15:09,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:15:09,487 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:15:09,487 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:15:09,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:15:09,496 INFO L82 PathProgramCache]: Analyzing trace with hash -589424936, now seen corresponding path program 1 times [2020-10-12 12:15:09,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:15:09,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [79248597] [2020-10-12 12:15:09,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:15:10,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:15:11,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:15:12,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:15:15,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:15:15,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 963 [2020-10-12 12:15:15,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 12:15:15,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-12 12:15:15,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:15:15,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 12:15:15,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 12:15:15,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 769 [2020-10-12 12:15:15,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 12:15:28,112 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 67 [2020-10-12 12:15:28,540 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 84 [2020-10-12 12:15:28,861 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 84 [2020-10-12 12:15:29,190 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 84 [2020-10-12 12:15:29,571 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 81 [2020-10-12 12:15:29,877 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 76 [2020-10-12 12:15:30,223 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 76 [2020-10-12 12:15:30,585 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 76 [2020-10-12 12:15:30,918 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 74 [2020-10-12 12:15:31,279 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 74 [2020-10-12 12:15:31,622 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 74 [2020-10-12 12:15:31,940 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 64 [2020-10-12 12:15:32,494 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 64 [2020-10-12 12:15:33,055 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 64 [2020-10-12 12:15:33,523 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 53 [2020-10-12 12:15:33,702 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:15:33,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:15:33,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:15:33,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:15:33,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:15:33,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:15:33,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:15:33,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 12:15:33,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:15:33,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:15:33,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:15:33,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 12:15:33,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:15:48,640 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 12:15:48,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [79248597] [2020-10-12 12:15:48,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 12:15:48,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-12 12:15:48,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600656960] [2020-10-12 12:15:48,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 12:15:48,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:15:48,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 12:15:48,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2020-10-12 12:15:48,673 INFO L87 Difference]: Start difference. First operand 1315 states. Second operand 18 states. [2020-10-12 12:15:49,166 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-12 12:15:50,098 WARN L193 SmtUtils]: Spent 768.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 181 [2020-10-12 12:15:50,971 WARN L193 SmtUtils]: Spent 768.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 181 [2020-10-12 12:15:51,938 WARN L193 SmtUtils]: Spent 832.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 192 [2020-10-12 12:15:56,897 WARN L193 SmtUtils]: Spent 851.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 190 [2020-10-12 12:16:00,741 WARN L193 SmtUtils]: Spent 874.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 191 [2020-10-12 12:16:03,783 WARN L193 SmtUtils]: Spent 792.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 181 [2020-10-12 12:16:04,780 WARN L193 SmtUtils]: Spent 901.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 188 [2020-10-12 12:16:06,189 WARN L193 SmtUtils]: Spent 947.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 191 [2020-10-12 12:16:18,224 WARN L193 SmtUtils]: Spent 844.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 182 [2020-10-12 12:16:19,297 WARN L193 SmtUtils]: Spent 951.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 188 [2020-10-12 12:16:23,396 WARN L193 SmtUtils]: Spent 912.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 187 [2020-10-12 12:16:33,663 WARN L193 SmtUtils]: Spent 811.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 171 [2020-10-12 12:16:34,651 WARN L193 SmtUtils]: Spent 852.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 175 [2020-10-12 12:16:38,019 WARN L193 SmtUtils]: Spent 839.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 172 [2020-10-12 12:16:54,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:16:54,530 INFO L93 Difference]: Finished difference Result 3396 states and 6359 transitions. [2020-10-12 12:16:54,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 12:16:54,534 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 947 [2020-10-12 12:16:54,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:16:54,580 INFO L225 Difference]: With dead ends: 3396 [2020-10-12 12:16:54,580 INFO L226 Difference]: Without dead ends: 2019 [2020-10-12 12:16:54,590 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 19.0s TimeCoverageRelationStatistics Valid=153, Invalid=903, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 12:16:54,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2019 states. [2020-10-12 12:16:54,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2019 to 2019. [2020-10-12 12:16:54,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2019 states. [2020-10-12 12:16:54,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 3053 transitions. [2020-10-12 12:16:54,741 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 3053 transitions. Word has length 947 [2020-10-12 12:16:54,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:16:54,744 INFO L479 AbstractCegarLoop]: Abstraction has 2019 states and 3053 transitions. [2020-10-12 12:16:54,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 12:16:54,744 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 3053 transitions. [2020-10-12 12:16:54,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1018 [2020-10-12 12:16:54,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:16:54,787 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:16:54,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 12:16:54,788 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:16:54,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:16:54,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1056669733, now seen corresponding path program 1 times [2020-10-12 12:16:54,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:16:54,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1372777642] [2020-10-12 12:16:54,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:16:55,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:16:55,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:16:56,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:17:00,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:17:00,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1035 [2020-10-12 12:17:00,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 12:17:00,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5147 [2020-10-12 12:17:00,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:17:00,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 12:17:00,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-12 12:17:00,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 954 [2020-10-12 12:17:00,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:17:01,850 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:17:01,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:17:01,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:17:01,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:17:01,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:17:01,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:17:01,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:17:01,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 12:17:01,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:17:01,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:17:01,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:17:01,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:17:01,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:17:02,008 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-12 12:17:02,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:17:02,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:17:02,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:17:02,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:17:02,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 12:17:02,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:17:02,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-12 12:17:02,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:17:02,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:17:02,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:17:02,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-12 12:17:02,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:17:03,877 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 66 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 12:17:03,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1372777642] [2020-10-12 12:17:03,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:17:03,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 12:17:03,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150346450] [2020-10-12 12:17:03,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 12:17:03,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:17:03,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 12:17:03,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 12:17:03,882 INFO L87 Difference]: Start difference. First operand 2019 states and 3053 transitions. Second operand 5 states. [2020-10-12 12:17:04,045 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 12:17:21,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:17:21,968 INFO L93 Difference]: Finished difference Result 4398 states and 7404 transitions. [2020-10-12 12:17:21,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 12:17:21,971 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1017 [2020-10-12 12:17:21,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:17:21,991 INFO L225 Difference]: With dead ends: 4398 [2020-10-12 12:17:21,992 INFO L226 Difference]: Without dead ends: 3139 [2020-10-12 12:17:21,997 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 12:17:22,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3139 states. [2020-10-12 12:17:22,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3139 to 3124. [2020-10-12 12:17:22,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3124 states. [2020-10-12 12:17:22,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3124 states to 3124 states and 4744 transitions. [2020-10-12 12:17:22,090 INFO L78 Accepts]: Start accepts. Automaton has 3124 states and 4744 transitions. Word has length 1017 [2020-10-12 12:17:22,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:17:22,092 INFO L479 AbstractCegarLoop]: Abstraction has 3124 states and 4744 transitions. [2020-10-12 12:17:22,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 12:17:22,092 INFO L276 IsEmpty]: Start isEmpty. Operand 3124 states and 4744 transitions. [2020-10-12 12:17:22,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1026 [2020-10-12 12:17:22,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:17:22,133 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:17:22,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 12:17:22,133 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:17:22,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:17:22,134 INFO L82 PathProgramCache]: Analyzing trace with hash 2090239002, now seen corresponding path program 1 times [2020-10-12 12:17:22,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:17:22,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2018860398] [2020-10-12 12:17:22,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:17:22,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:17:22,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:17:22,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:17:27,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:17:27,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1045 [2020-10-12 12:17:27,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 12:17:27,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-12 12:17:27,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:17:27,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 12:17:27,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 12:17:27,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 12:17:27,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:17:28,063 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:17:28,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:17:28,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:17:28,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:17:28,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:17:28,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:17:28,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:17:28,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 12:17:28,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:17:28,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:17:28,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:17:28,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 12:17:28,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 12:17:28,285 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-12 12:17:28,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:17:28,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:17:28,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:17:28,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:17:28,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 12:17:28,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:17:28,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-12 12:17:28,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:17:28,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:17:28,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:17:28,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 12:17:28,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-12 12:17:28,819 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 30 [2020-10-12 12:17:28,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 12:17:28,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:17:28,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:17:28,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:17:28,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 12:17:28,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:17:28,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 12:17:28,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:17:28,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:17:28,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 12:17:28,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:17:28,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-12 12:17:30,267 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 72 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 12:17:30,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2018860398] [2020-10-12 12:17:30,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:17:30,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 12:17:30,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505879034] [2020-10-12 12:17:30,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 12:17:30,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:17:30,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 12:17:30,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 12:17:30,271 INFO L87 Difference]: Start difference. First operand 3124 states and 4744 transitions. Second operand 8 states. [2020-10-12 12:17:30,460 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-12 12:17:32,055 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-12 12:17:34,719 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 12:18:05,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:18:05,340 INFO L93 Difference]: Finished difference Result 9978 states and 16522 transitions. [2020-10-12 12:18:05,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 12:18:05,342 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1025 [2020-10-12 12:18:05,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:18:05,382 INFO L225 Difference]: With dead ends: 9978 [2020-10-12 12:18:05,382 INFO L226 Difference]: Without dead ends: 7614 [2020-10-12 12:18:05,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-12 12:18:05,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7614 states. [2020-10-12 12:18:05,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7614 to 7489. [2020-10-12 12:18:05,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7489 states. [2020-10-12 12:18:05,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7489 states to 7489 states and 11186 transitions. [2020-10-12 12:18:05,601 INFO L78 Accepts]: Start accepts. Automaton has 7489 states and 11186 transitions. Word has length 1025 [2020-10-12 12:18:05,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:18:05,602 INFO L479 AbstractCegarLoop]: Abstraction has 7489 states and 11186 transitions. [2020-10-12 12:18:05,602 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 12:18:05,602 INFO L276 IsEmpty]: Start isEmpty. Operand 7489 states and 11186 transitions. [2020-10-12 12:18:05,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1078 [2020-10-12 12:18:05,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:18:05,629 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:18:05,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 12:18:05,630 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:18:05,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:18:05,630 INFO L82 PathProgramCache]: Analyzing trace with hash 2065220087, now seen corresponding path program 1 times [2020-10-12 12:18:05,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:18:05,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1763909993] [2020-10-12 12:18:05,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:18:05,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:18:05,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:06,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:09,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:10,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:18:10,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1097 [2020-10-12 12:18:10,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 12:18:10,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5144 [2020-10-12 12:18:10,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:18:10,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 12:18:10,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-12 12:18:10,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 954 [2020-10-12 12:18:10,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:18:11,768 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:18:11,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:18:11,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:18:11,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:11,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:18:11,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:18:11,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:18:11,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 12:18:11,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:18:11,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:18:11,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:18:11,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:18:11,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:18:11,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:18:11,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:18:11,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:11,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:18:11,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 12:18:11,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:18:11,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-12 12:18:11,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:18:11,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:18:11,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:18:11,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:18:11,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:18:11,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-12 12:18:11,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:18:11,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:11,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:18:11,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 12:18:11,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:18:11,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 12:18:11,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:18:11,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:18:11,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:18:11,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 12:18:11,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:18:12,843 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 125 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 12:18:12,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1763909993] [2020-10-12 12:18:12,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:18:12,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 12:18:12,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119452880] [2020-10-12 12:18:12,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 12:18:12,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:18:12,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 12:18:12,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 12:18:12,847 INFO L87 Difference]: Start difference. First operand 7489 states and 11186 transitions. Second operand 5 states. [2020-10-12 12:18:13,018 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 12:18:31,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:18:31,317 INFO L93 Difference]: Finished difference Result 20521 states and 31975 transitions. [2020-10-12 12:18:31,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 12:18:31,319 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1077 [2020-10-12 12:18:31,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:18:31,379 INFO L225 Difference]: With dead ends: 20521 [2020-10-12 12:18:31,380 INFO L226 Difference]: Without dead ends: 13792 [2020-10-12 12:18:31,398 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 12:18:31,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13792 states. [2020-10-12 12:18:31,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13792 to 13776. [2020-10-12 12:18:31,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13776 states. [2020-10-12 12:18:31,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13776 states to 13776 states and 20071 transitions. [2020-10-12 12:18:31,763 INFO L78 Accepts]: Start accepts. Automaton has 13776 states and 20071 transitions. Word has length 1077 [2020-10-12 12:18:31,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:18:31,765 INFO L479 AbstractCegarLoop]: Abstraction has 13776 states and 20071 transitions. [2020-10-12 12:18:31,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 12:18:31,765 INFO L276 IsEmpty]: Start isEmpty. Operand 13776 states and 20071 transitions. [2020-10-12 12:18:31,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1086 [2020-10-12 12:18:31,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:18:31,823 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:18:31,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 12:18:31,824 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:18:31,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:18:31,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1885975289, now seen corresponding path program 1 times [2020-10-12 12:18:31,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:18:31,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078749690] [2020-10-12 12:18:31,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:18:31,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:18:32,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:32,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:35,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:37,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:18:37,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1105 [2020-10-12 12:18:37,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 12:18:37,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-12 12:18:37,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:18:37,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 12:18:37,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 149 [2020-10-12 12:18:37,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 955 [2020-10-12 12:18:37,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:18:37,586 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:18:37,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:18:37,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:18:37,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:37,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:18:37,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:18:37,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:18:37,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 12:18:37,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:18:37,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:18:37,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:18:37,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:18:37,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:18:37,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:18:37,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:18:37,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:37,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:18:37,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 12:18:37,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:18:37,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-12 12:18:37,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:18:37,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:18:37,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:18:37,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:18:37,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:18:37,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-12 12:18:37,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:18:37,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:37,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:18:37,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 12:18:37,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:18:37,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 12:18:37,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:18:37,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:18:37,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:18:37,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 12:18:37,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:18:39,339 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 12:18:39,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078749690] [2020-10-12 12:18:39,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:18:39,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 12:18:39,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519670775] [2020-10-12 12:18:39,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 12:18:39,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:18:39,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 12:18:39,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 12:18:39,341 INFO L87 Difference]: Start difference. First operand 13776 states and 20071 transitions. Second operand 5 states. [2020-10-12 12:18:40,254 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 129