/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=NARROWEST --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_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 07:16:16,259 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 07:16:16,262 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 07:16:16,299 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 07:16:16,299 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 07:16:16,308 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 07:16:16,310 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 07:16:16,313 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 07:16:16,316 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 07:16:16,319 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 07:16:16,320 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 07:16:16,321 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 07:16:16,321 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 07:16:16,324 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 07:16:16,327 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 07:16:16,329 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 07:16:16,330 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 07:16:16,331 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 07:16:16,333 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 07:16:16,341 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 07:16:16,343 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 07:16:16,345 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 07:16:16,346 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 07:16:16,346 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 07:16:16,361 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 07:16:16,364 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 07:16:16,364 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 07:16:16,365 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 07:16:16,366 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 07:16:16,369 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 07:16:16,369 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 07:16:16,370 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 07:16:16,372 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 07:16:16,373 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 07:16:16,374 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 07:16:16,377 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 07:16:16,378 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 07:16:16,378 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 07:16:16,378 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 07:16:16,379 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 07:16:16,380 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 07:16:16,381 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 [2020-10-13 07:16:16,420 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 07:16:16,420 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 07:16:16,422 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 07:16:16,422 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 07:16:16,422 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 07:16:16,422 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 07:16:16,423 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 07:16:16,423 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 07:16:16,423 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 07:16:16,423 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 07:16:16,424 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 07:16:16,424 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 07:16:16,425 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 07:16:16,425 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 07:16:16,425 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 07:16:16,425 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 07:16:16,426 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 07:16:16,426 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 07:16:16,426 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 07:16:16,426 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 07:16:16,427 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 07:16:16,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 07:16:16,427 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 07:16:16,427 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 07:16:16,427 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 07:16:16,428 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 07:16:16,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 07:16:16,428 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 07:16:16,428 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 07:16:16,428 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 07:16:16,738 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 07:16:16,750 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 07:16:16,753 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 07:16:16,755 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 07:16:16,755 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 07:16:16,756 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label58.c [2020-10-13 07:16:16,817 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a881555e/5531a91fc69f405cb30f5b39600acc76/FLAGed91e5ad0 [2020-10-13 07:16:17,733 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 07:16:17,734 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label58.c [2020-10-13 07:16:17,801 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a881555e/5531a91fc69f405cb30f5b39600acc76/FLAGed91e5ad0 [2020-10-13 07:16:18,055 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a881555e/5531a91fc69f405cb30f5b39600acc76 [2020-10-13 07:16:18,064 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 07:16:18,065 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 07:16:18,066 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 07:16:18,066 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 07:16:18,070 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 07:16:18,071 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:16:18" (1/1) ... [2020-10-13 07:16:18,074 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cd0480f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:16:18, skipping insertion in model container [2020-10-13 07:16:18,074 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:16:18" (1/1) ... [2020-10-13 07:16:18,083 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 07:16:18,362 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 07:16:20,729 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 07:16:20,735 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 07:16:21,773 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 07:16:21,824 INFO L208 MainTranslator]: Completed translation [2020-10-13 07:16:21,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:16:21 WrapperNode [2020-10-13 07:16:21,825 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 07:16:21,826 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 07:16:21,826 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 07:16:21,826 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 07:16:21,840 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:16:21" (1/1) ... [2020-10-13 07:16:21,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:16:21" (1/1) ... [2020-10-13 07:16:21,897 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:16:21" (1/1) ... [2020-10-13 07:16:21,897 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:16:21" (1/1) ... [2020-10-13 07:16:22,030 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:16:21" (1/1) ... [2020-10-13 07:16:22,099 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:16:21" (1/1) ... [2020-10-13 07:16:22,149 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:16:21" (1/1) ... [2020-10-13 07:16:22,206 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 07:16:22,207 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 07:16:22,207 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 07:16:22,207 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 07:16:22,208 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:16:21" (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 [2020-10-13 07:16:22,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 07:16:22,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 07:16:22,272 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 07:16:22,272 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 07:16:22,272 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 07:16:22,272 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 07:16:22,272 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-13 07:16:22,272 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 07:16:22,273 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 07:16:22,273 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 07:16:22,273 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 07:16:22,273 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 07:16:22,273 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-13 07:16:22,274 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 07:16:22,274 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 07:16:22,274 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 07:16:22,274 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 07:16:22,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 07:16:22,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 07:16:29,035 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 07:16:29,036 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 07:16:29,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:16:29 BoogieIcfgContainer [2020-10-13 07:16:29,052 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 07:16:29,055 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 07:16:29,055 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 07:16:29,059 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 07:16:29,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:16:18" (1/3) ... [2020-10-13 07:16:29,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23039bc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:16:29, skipping insertion in model container [2020-10-13 07:16:29,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:16:21" (2/3) ... [2020-10-13 07:16:29,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23039bc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:16:29, skipping insertion in model container [2020-10-13 07:16:29,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:16:29" (3/3) ... [2020-10-13 07:16:29,064 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem06_label58.c [2020-10-13 07:16:29,074 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 07:16:29,085 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 07:16:29,099 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 07:16:29,130 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 07:16:29,130 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 07:16:29,130 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 07:16:29,130 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 07:16:29,130 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 07:16:29,130 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 07:16:29,131 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 07:16:29,131 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 07:16:29,174 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states. [2020-10-13 07:16:29,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 969 [2020-10-13 07:16:29,250 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:16:29,252 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 07:16:29,252 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:16:29,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:16:29,260 INFO L82 PathProgramCache]: Analyzing trace with hash -704078729, now seen corresponding path program 1 times [2020-10-13 07:16:29,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:16:29,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1342760745] [2020-10-13 07:16:29,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:16:30,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:16:30,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:16:33,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:16:35,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:16:35,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 984 [2020-10-13 07:16:35,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 07:16:35,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5156 [2020-10-13 07:16:35,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:16:35,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 07:16:35,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:16:35,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 769 [2020-10-13 07:16:35,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 07:16:38,131 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 66 [2020-10-13 07:16:38,392 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 73 [2020-10-13 07:16:38,583 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 73 [2020-10-13 07:16:38,780 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 73 [2020-10-13 07:16:38,957 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 69 [2020-10-13 07:16:39,119 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 65 [2020-10-13 07:16:39,300 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 65 [2020-10-13 07:16:39,486 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 65 [2020-10-13 07:16:39,663 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2020-10-13 07:16:39,820 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2020-10-13 07:16:39,987 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2020-10-13 07:16:40,441 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:16:40,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:16:40,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:16:40,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:16:40,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:16:40,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:16:40,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:16:40,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 07:16:40,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:16:40,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:16:40,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:16:40,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:16:40,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:16:51,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 07:16:51,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1342760745] [2020-10-13 07:16:51,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 07:16:51,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-13 07:16:51,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019478386] [2020-10-13 07:16:51,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 07:16:51,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:16:51,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 07:16:51,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2020-10-13 07:16:51,941 INFO L87 Difference]: Start difference. First operand 1315 states. Second operand 20 states. [2020-10-13 07:16:52,309 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-13 07:16:52,968 WARN L193 SmtUtils]: Spent 551.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 167 [2020-10-13 07:16:53,644 WARN L193 SmtUtils]: Spent 574.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 167 [2020-10-13 07:16:54,322 WARN L193 SmtUtils]: Spent 585.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 175 [2020-10-13 07:16:58,208 WARN L193 SmtUtils]: Spent 591.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 174 [2020-10-13 07:17:01,498 WARN L193 SmtUtils]: Spent 885.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 173 [2020-10-13 07:17:03,873 WARN L193 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 164 [2020-10-13 07:17:04,556 WARN L193 SmtUtils]: Spent 599.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 170 [2020-10-13 07:17:05,800 WARN L193 SmtUtils]: Spent 903.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 169 [2020-10-13 07:17:14,929 WARN L193 SmtUtils]: Spent 513.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 162 [2020-10-13 07:17:15,574 WARN L193 SmtUtils]: Spent 569.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 167 [2020-10-13 07:17:18,485 WARN L193 SmtUtils]: Spent 571.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 166 [2020-10-13 07:17:25,633 WARN L193 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 160 [2020-10-13 07:17:26,287 WARN L193 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 164 [2020-10-13 07:17:28,774 WARN L193 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 162 [2020-10-13 07:17:41,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:17:41,080 INFO L93 Difference]: Finished difference Result 3396 states and 6359 transitions. [2020-10-13 07:17:41,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 07:17:41,083 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 968 [2020-10-13 07:17:41,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:17:41,125 INFO L225 Difference]: With dead ends: 3396 [2020-10-13 07:17:41,125 INFO L226 Difference]: Without dead ends: 2019 [2020-10-13 07:17:41,139 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=191, Invalid=999, Unknown=0, NotChecked=0, Total=1190 [2020-10-13 07:17:41,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2019 states. [2020-10-13 07:17:41,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2019 to 2019. [2020-10-13 07:17:41,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2019 states. [2020-10-13 07:17:41,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 3053 transitions. [2020-10-13 07:17:41,301 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 3053 transitions. Word has length 968 [2020-10-13 07:17:41,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:17:41,304 INFO L479 AbstractCegarLoop]: Abstraction has 2019 states and 3053 transitions. [2020-10-13 07:17:41,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-13 07:17:41,304 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 3053 transitions. [2020-10-13 07:17:41,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1039 [2020-10-13 07:17:41,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:17:41,352 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 07:17:41,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 07:17:41,352 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:17:41,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:17:41,353 INFO L82 PathProgramCache]: Analyzing trace with hash 667940170, now seen corresponding path program 1 times [2020-10-13 07:17:41,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:17:41,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [393748567] [2020-10-13 07:17:41,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:17:41,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:17:42,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:17:42,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:17:47,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:17:47,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1056 [2020-10-13 07:17:47,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 07:17:47,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5182 [2020-10-13 07:17:47,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:17:47,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 07:17:47,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:17:47,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 07:17:47,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:17:47,473 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:17:47,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:17:47,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:17:47,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:17:47,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:17:47,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:17:47,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:17:47,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 07:17:47,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:17:47,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:17:47,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:17:47,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:17:47,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:17:47,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:17:47,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:17:47,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:17:47,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:17:47,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 07:17:47,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:17:47,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-13 07:17:47,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:17:47,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 07:17:47,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:17:47,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 07:17:47,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:17:48,527 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 07:17:48,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [393748567] [2020-10-13 07:17:48,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 07:17:48,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 07:17:48,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276522293] [2020-10-13 07:17:48,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 07:17:48,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:17:48,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 07:17:48,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 07:17:48,533 INFO L87 Difference]: Start difference. First operand 2019 states and 3053 transitions. Second operand 7 states. [2020-10-13 07:17:48,703 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 07:17:49,951 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-13 07:18:09,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:18:09,189 INFO L93 Difference]: Finished difference Result 4486 states and 7525 transitions. [2020-10-13 07:18:09,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 07:18:09,197 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1038 [2020-10-13 07:18:09,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:18:09,216 INFO L225 Difference]: With dead ends: 4486 [2020-10-13 07:18:09,216 INFO L226 Difference]: Without dead ends: 3227 [2020-10-13 07:18:09,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-13 07:18:09,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3227 states. [2020-10-13 07:18:09,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3227 to 3147. [2020-10-13 07:18:09,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3147 states. [2020-10-13 07:18:09,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3147 states to 3147 states and 4653 transitions. [2020-10-13 07:18:09,368 INFO L78 Accepts]: Start accepts. Automaton has 3147 states and 4653 transitions. Word has length 1038 [2020-10-13 07:18:09,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:18:09,368 INFO L479 AbstractCegarLoop]: Abstraction has 3147 states and 4653 transitions. [2020-10-13 07:18:09,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 07:18:09,369 INFO L276 IsEmpty]: Start isEmpty. Operand 3147 states and 4653 transitions. [2020-10-13 07:18:09,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1091 [2020-10-13 07:18:09,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:18:09,390 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 07:18:09,390 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 07:18:09,390 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:18:09,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:18:09,391 INFO L82 PathProgramCache]: Analyzing trace with hash 571467405, now seen corresponding path program 1 times [2020-10-13 07:18:09,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:18:09,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1028230759] [2020-10-13 07:18:09,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:18:09,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:18:09,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:18:10,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:18:14,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:18:14,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1108 [2020-10-13 07:18:14,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 07:18:14,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-13 07:18:14,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:18:14,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 07:18:14,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:18:14,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 552 [2020-10-13 07:18:14,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:18:16,504 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 78 [2020-10-13 07:18:16,682 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 78 [2020-10-13 07:18:16,883 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 78 [2020-10-13 07:18:17,071 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 68 [2020-10-13 07:18:17,458 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 65 [2020-10-13 07:18:17,628 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 57 [2020-10-13 07:18:17,778 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 49 [2020-10-13 07:18:18,068 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:18:18,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:18:18,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:18:18,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:18:18,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:18:18,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:18:18,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:18:18,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 07:18:18,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:18:18,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:18:18,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:18:18,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:18:18,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:18:18,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:18:18,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:18:18,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:18:18,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:18:18,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 07:18:18,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:18:18,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 407 [2020-10-13 07:18:18,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:18:18,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 07:18:18,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:18:18,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-13 07:18:18,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:18:27,704 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 2 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 07:18:27,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1028230759] [2020-10-13 07:18:27,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 07:18:27,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 07:18:27,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951911995] [2020-10-13 07:18:27,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 07:18:27,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:18:27,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 07:18:27,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2020-10-13 07:18:27,708 INFO L87 Difference]: Start difference. First operand 3147 states and 4653 transitions. Second operand 19 states. [2020-10-13 07:18:27,944 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-13 07:18:30,089 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 78 [2020-10-13 07:18:30,327 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2020-10-13 07:18:30,660 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 86 [2020-10-13 07:18:31,340 WARN L193 SmtUtils]: Spent 620.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 176 [2020-10-13 07:18:32,132 WARN L193 SmtUtils]: Spent 720.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 192 [2020-10-13 07:18:33,520 WARN L193 SmtUtils]: Spent 767.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 191 [2020-10-13 07:18:36,602 WARN L193 SmtUtils]: Spent 712.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 190 [2020-10-13 07:18:45,567 WARN L193 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 172 [2020-10-13 07:18:46,270 WARN L193 SmtUtils]: Spent 618.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 186 [2020-10-13 07:18:47,585 WARN L193 SmtUtils]: Spent 602.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 183 [2020-10-13 07:18:56,651 WARN L193 SmtUtils]: Spent 627.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 180 [2020-10-13 07:18:57,713 WARN L193 SmtUtils]: Spent 627.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 175 [2020-10-13 07:19:23,223 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2020-10-13 07:19:23,449 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2020-10-13 07:19:23,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:19:23,510 INFO L93 Difference]: Finished difference Result 8464 states and 13440 transitions. [2020-10-13 07:19:23,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-13 07:19:23,511 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 1090 [2020-10-13 07:19:23,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:19:23,540 INFO L225 Difference]: With dead ends: 8464 [2020-10-13 07:19:23,540 INFO L226 Difference]: Without dead ends: 6077 [2020-10-13 07:19:23,547 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=261, Invalid=929, Unknown=0, NotChecked=0, Total=1190 [2020-10-13 07:19:23,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6077 states. [2020-10-13 07:19:23,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6077 to 5949. [2020-10-13 07:19:23,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5949 states. [2020-10-13 07:19:23,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5949 states to 5949 states and 8881 transitions. [2020-10-13 07:19:23,705 INFO L78 Accepts]: Start accepts. Automaton has 5949 states and 8881 transitions. Word has length 1090 [2020-10-13 07:19:23,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:19:23,707 INFO L479 AbstractCegarLoop]: Abstraction has 5949 states and 8881 transitions. [2020-10-13 07:19:23,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 07:19:23,707 INFO L276 IsEmpty]: Start isEmpty. Operand 5949 states and 8881 transitions. [2020-10-13 07:19:23,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1116 [2020-10-13 07:19:23,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:19:23,766 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 07:19:23,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 07:19:23,766 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:19:23,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:19:23,767 INFO L82 PathProgramCache]: Analyzing trace with hash -457296454, now seen corresponding path program 1 times [2020-10-13 07:19:23,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:19:23,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1718890379] [2020-10-13 07:19:23,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:19:24,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:19:24,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:19:25,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:19:26,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:19:29,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:19:29,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1135 [2020-10-13 07:19:29,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 07:19:29,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5139 [2020-10-13 07:19:29,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:19:29,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 07:19:29,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-13 07:19:29,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 975 [2020-10-13 07:19:29,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:19:29,890 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:19:29,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:19:29,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:19:29,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:19:29,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:19:29,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:19:29,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:19:29,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 07:19:29,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:19:29,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 07:19:29,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:19:29,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 07:19:29,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:19:29,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:19:29,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:19:29,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:19:30,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:19:30,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 07:19:30,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:19:30,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 07:19:30,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:19:30,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 07:19:30,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:19:30,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 07:19:30,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:19:30,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 07:19:30,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:19:30,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:19:30,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:19:30,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 07:19:30,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:19:30,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 07:19:30,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:19:30,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:19:30,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:19:30,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 07:19:30,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:19:31,099 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 142 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-13 07:19:31,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1718890379] [2020-10-13 07:19:31,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 07:19:31,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 07:19:31,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732576386] [2020-10-13 07:19:31,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 07:19:31,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:19:31,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 07:19:31,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 07:19:31,103 INFO L87 Difference]: Start difference. First operand 5949 states and 8881 transitions. Second operand 5 states. [2020-10-13 07:19:31,937 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 07:19:47,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:19:47,584 INFO L93 Difference]: Finished difference Result 15506 states and 24372 transitions. [2020-10-13 07:19:47,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 07:19:47,589 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1115 [2020-10-13 07:19:47,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:19:47,640 INFO L225 Difference]: With dead ends: 15506 [2020-10-13 07:19:47,641 INFO L226 Difference]: Without dead ends: 10317 [2020-10-13 07:19:47,653 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 [2020-10-13 07:19:47,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10317 states. [2020-10-13 07:19:47,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10317 to 10215. [2020-10-13 07:19:47,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10215 states. [2020-10-13 07:19:47,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10215 states to 10215 states and 14560 transitions. [2020-10-13 07:19:47,895 INFO L78 Accepts]: Start accepts. Automaton has 10215 states and 14560 transitions. Word has length 1115 [2020-10-13 07:19:47,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:19:47,897 INFO L479 AbstractCegarLoop]: Abstraction has 10215 states and 14560 transitions. [2020-10-13 07:19:47,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 07:19:47,897 INFO L276 IsEmpty]: Start isEmpty. Operand 10215 states and 14560 transitions. [2020-10-13 07:19:47,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1125 [2020-10-13 07:19:47,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:19:47,936 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 07:19:47,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 07:19:47,936 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:19:47,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:19:47,937 INFO L82 PathProgramCache]: Analyzing trace with hash 590786701, now seen corresponding path program 1 times [2020-10-13 07:19:47,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:19:47,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [143950422] [2020-10-13 07:19:47,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:19:48,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:19:48,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:19:48,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:19:49,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:19:53,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:19:53,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1146 [2020-10-13 07:19:53,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 07:19:53,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 07:19:53,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:19:53,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 07:19:53,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-13 07:19:53,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 07:19:53,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:19:53,542 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:19:53,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:19:53,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:19:53,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:19:53,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:19:53,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:19:53,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:19:53,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 07:19:53,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:19:53,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 07:19:53,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:19:53,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 07:19:53,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:19:53,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:19:53,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:19:53,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:19:53,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:19:53,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 07:19:53,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:19:53,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 07:19:53,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:19:53,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 07:19:53,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:19:53,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 07:19:53,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:19:53,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 07:19:53,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:19:53,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:19:53,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:19:53,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 07:19:53,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:19:53,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 07:19:53,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:19:53,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:19:53,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:19:53,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 07:19:53,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:19:53,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-13 07:19:53,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:19:53,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:19:53,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:19:53,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 07:19:53,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:19:53,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 07:19:53,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:19:53,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 07:19:53,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:19:53,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 07:19:53,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:19:55,185 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-13 07:19:55,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [143950422] [2020-10-13 07:19:55,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 07:19:55,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 07:19:55,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48946149] [2020-10-13 07:19:55,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 07:19:55,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:19:55,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 07:19:55,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 07:19:55,189 INFO L87 Difference]: Start difference. First operand 10215 states and 14560 transitions. Second operand 7 states. [2020-10-13 07:19:55,343 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 07:19:56,868 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 129