/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_label57.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 07:14:33,941 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 07:14:33,944 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 07:14:33,969 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 07:14:33,969 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 07:14:33,970 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 07:14:33,972 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 07:14:33,973 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 07:14:33,975 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 07:14:33,976 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 07:14:33,977 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 07:14:33,978 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 07:14:33,978 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 07:14:33,979 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 07:14:33,980 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 07:14:33,981 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 07:14:33,982 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 07:14:33,983 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 07:14:33,984 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 07:14:33,986 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 07:14:33,990 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 07:14:33,994 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 07:14:33,995 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 07:14:33,996 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 07:14:34,001 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 07:14:34,001 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 07:14:34,002 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 07:14:34,004 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 07:14:34,004 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 07:14:34,007 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 07:14:34,008 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 07:14:34,008 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 07:14:34,009 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 07:14:34,010 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 07:14:34,010 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 07:14:34,011 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 07:14:34,011 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 07:14:34,011 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 07:14:34,012 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 07:14:34,013 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 07:14:34,014 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 07:14:34,015 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 07:14:34,067 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 07:14:34,069 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 07:14:34,070 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 07:14:34,071 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 07:14:34,071 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 07:14:34,071 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 07:14:34,071 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 07:14:34,071 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 07:14:34,072 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 07:14:34,072 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 07:14:34,076 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 07:14:34,076 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 07:14:34,077 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 07:14:34,077 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 07:14:34,077 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 07:14:34,077 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 07:14:34,077 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 07:14:34,077 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 07:14:34,078 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 07:14:34,078 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 07:14:34,078 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 07:14:34,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 07:14:34,078 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 07:14:34,079 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 07:14:34,079 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 07:14:34,081 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 07:14:34,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 07:14:34,081 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 07:14:34,082 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 07:14:34,082 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 07:14:34,383 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 07:14:34,396 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 07:14:34,399 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 07:14:34,400 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 07:14:34,401 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 07:14:34,401 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label57.c [2020-10-13 07:14:34,465 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e1619ab9/414cc7f9162a49b2adaadd5cf3706749/FLAGa3189b227 [2020-10-13 07:14:35,327 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 07:14:35,328 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label57.c [2020-10-13 07:14:35,377 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e1619ab9/414cc7f9162a49b2adaadd5cf3706749/FLAGa3189b227 [2020-10-13 07:14:35,805 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e1619ab9/414cc7f9162a49b2adaadd5cf3706749 [2020-10-13 07:14:35,813 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 07:14:35,816 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 07:14:35,817 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 07:14:35,817 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 07:14:35,821 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 07:14:35,822 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:14:35" (1/1) ... [2020-10-13 07:14:35,825 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b2fc715 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:14:35, skipping insertion in model container [2020-10-13 07:14:35,825 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:14:35" (1/1) ... [2020-10-13 07:14:35,834 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 07:14:36,109 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 07:14:38,530 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 07:14:38,539 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 07:14:39,628 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 07:14:39,679 INFO L208 MainTranslator]: Completed translation [2020-10-13 07:14:39,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:14:39 WrapperNode [2020-10-13 07:14:39,680 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 07:14:39,681 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 07:14:39,681 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 07:14:39,681 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 07:14:39,696 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:14:39" (1/1) ... [2020-10-13 07:14:39,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:14:39" (1/1) ... [2020-10-13 07:14:39,756 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:14:39" (1/1) ... [2020-10-13 07:14:39,757 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:14:39" (1/1) ... [2020-10-13 07:14:39,905 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:14:39" (1/1) ... [2020-10-13 07:14:39,948 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:14:39" (1/1) ... [2020-10-13 07:14:40,011 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:14:39" (1/1) ... [2020-10-13 07:14:40,058 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 07:14:40,059 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 07:14:40,059 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 07:14:40,059 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 07:14:40,060 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:14:39" (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 07:14:40,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 07:14:40,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 07:14:40,136 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 07:14:40,136 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 07:14:40,136 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 07:14:40,137 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 07:14:40,137 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-13 07:14:40,137 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 07:14:40,137 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 07:14:40,137 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 07:14:40,137 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 07:14:40,138 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 07:14:40,138 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-13 07:14:40,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 07:14:40,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 07:14:40,138 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 07:14:40,139 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 07:14:40,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 07:14:40,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 07:14:47,072 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 07:14:47,073 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 07:14:47,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:14:47 BoogieIcfgContainer [2020-10-13 07:14:47,096 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 07:14:47,097 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 07:14:47,098 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 07:14:47,103 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 07:14:47,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:14:35" (1/3) ... [2020-10-13 07:14:47,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2db1f879 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:14:47, skipping insertion in model container [2020-10-13 07:14:47,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:14:39" (2/3) ... [2020-10-13 07:14:47,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2db1f879 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:14:47, skipping insertion in model container [2020-10-13 07:14:47,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:14:47" (3/3) ... [2020-10-13 07:14:47,109 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem06_label57.c [2020-10-13 07:14:47,119 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 07:14:47,129 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 07:14:47,144 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 07:14:47,174 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 07:14:47,174 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 07:14:47,174 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 07:14:47,174 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 07:14:47,174 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 07:14:47,175 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 07:14:47,175 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 07:14:47,175 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 07:14:47,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states. [2020-10-13 07:14:47,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 988 [2020-10-13 07:14:47,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:14:47,268 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 07:14:47,269 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:14:47,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:14:47,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1906250504, now seen corresponding path program 1 times [2020-10-13 07:14:47,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:14:47,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [318998281] [2020-10-13 07:14:47,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:14:48,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:14:48,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:14:52,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:14:53,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:14:53,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1003 [2020-10-13 07:14:53,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 07:14:53,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5661 [2020-10-13 07:14:53,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:14:53,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 07:14:53,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:14:53,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 769 [2020-10-13 07:14:53,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 07:14:57,290 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-13 07:14:57,468 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-13 07:14:57,710 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 73 [2020-10-13 07:14:57,969 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 73 [2020-10-13 07:14:58,247 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 69 [2020-10-13 07:14:58,512 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 65 [2020-10-13 07:14:58,789 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 65 [2020-10-13 07:14:59,066 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 65 [2020-10-13 07:14:59,298 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 56 [2020-10-13 07:14:59,513 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 56 [2020-10-13 07:14:59,727 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 56 [2020-10-13 07:15:00,175 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:15:00,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:15:00,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:15:00,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:15:00,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:15:00,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:15:00,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:15:00,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 07:15:00,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:15:00,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:15:00,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:15:00,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:15:00,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:15:11,204 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 07:15:11,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [318998281] [2020-10-13 07:15:11,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 07:15:11,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-13 07:15:11,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85593825] [2020-10-13 07:15:11,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 07:15:11,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:15:11,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 07:15:11,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2020-10-13 07:15:11,234 INFO L87 Difference]: Start difference. First operand 1315 states. Second operand 18 states. [2020-10-13 07:15:11,681 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-13 07:15:12,485 WARN L193 SmtUtils]: Spent 677.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 184 [2020-10-13 07:15:13,250 WARN L193 SmtUtils]: Spent 690.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 176 [2020-10-13 07:15:14,152 WARN L193 SmtUtils]: Spent 782.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 184 [2020-10-13 07:15:18,175 WARN L193 SmtUtils]: Spent 830.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 183 [2020-10-13 07:15:21,665 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 231 DAG size of output: 182 [2020-10-13 07:15:24,212 WARN L193 SmtUtils]: Spent 725.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 175 [2020-10-13 07:15:25,048 WARN L193 SmtUtils]: Spent 748.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 181 [2020-10-13 07:15:26,115 WARN L193 SmtUtils]: Spent 735.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 180 [2020-10-13 07:15:34,909 WARN L193 SmtUtils]: Spent 683.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 173 [2020-10-13 07:15:35,722 WARN L193 SmtUtils]: Spent 717.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 178 [2020-10-13 07:15:38,558 WARN L193 SmtUtils]: Spent 723.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 177 [2020-10-13 07:15:45,746 WARN L193 SmtUtils]: Spent 726.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 171 [2020-10-13 07:15:46,648 WARN L193 SmtUtils]: Spent 789.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 175 [2020-10-13 07:15:49,143 WARN L193 SmtUtils]: Spent 723.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 173 [2020-10-13 07:16:00,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:16:00,530 INFO L93 Difference]: Finished difference Result 3396 states and 6359 transitions. [2020-10-13 07:16:00,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 07:16:00,532 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 987 [2020-10-13 07:16:00,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:16:00,573 INFO L225 Difference]: With dead ends: 3396 [2020-10-13 07:16:00,574 INFO L226 Difference]: Without dead ends: 2019 [2020-10-13 07:16:00,589 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=155, Invalid=901, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 07:16:00,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2019 states. [2020-10-13 07:16:00,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2019 to 2019. [2020-10-13 07:16:00,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2019 states. [2020-10-13 07:16:00,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 3053 transitions. [2020-10-13 07:16:00,758 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 3053 transitions. Word has length 987 [2020-10-13 07:16:00,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:16:00,767 INFO L479 AbstractCegarLoop]: Abstraction has 2019 states and 3053 transitions. [2020-10-13 07:16:00,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 07:16:00,767 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 3053 transitions. [2020-10-13 07:16:00,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1058 [2020-10-13 07:16:00,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:16:00,832 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 07:16:00,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 07:16:00,833 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:16:00,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:16:00,834 INFO L82 PathProgramCache]: Analyzing trace with hash -850508475, now seen corresponding path program 1 times [2020-10-13 07:16:00,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:16:00,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [145281265] [2020-10-13 07:16:00,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:16:01,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:16:01,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:16:02,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:16:06,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:16:06,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1075 [2020-10-13 07:16:06,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 07:16:06,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5255 [2020-10-13 07:16:06,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:16:06,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 07:16:06,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:16:06,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 07:16:06,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 07:16:07,029 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:16:07,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:16:07,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:16:07,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:16:07,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:16:07,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:16:07,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:16:07,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 07:16:07,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:16:07,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:16:07,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:16:07,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:16:07,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:16:07,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:16:07,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:16:07,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:16:07,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:16:07,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 07:16:07,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:16:07,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-13 07:16:07,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:16:07,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 07:16:07,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:16:07,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 07:16:07,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:16:08,312 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 07:16:08,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [145281265] [2020-10-13 07:16:08,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 07:16:08,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 07:16:08,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138013491] [2020-10-13 07:16:08,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 07:16:08,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:16:08,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 07:16:08,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 07:16:08,319 INFO L87 Difference]: Start difference. First operand 2019 states and 3053 transitions. Second operand 7 states. [2020-10-13 07:16:08,506 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-13 07:16:09,708 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-13 07:16:30,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:16:30,297 INFO L93 Difference]: Finished difference Result 4504 states and 7546 transitions. [2020-10-13 07:16:30,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 07:16:30,298 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1057 [2020-10-13 07:16:30,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:16:30,316 INFO L225 Difference]: With dead ends: 4504 [2020-10-13 07:16:30,316 INFO L226 Difference]: Without dead ends: 3245 [2020-10-13 07:16:30,321 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 07:16:30,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3245 states. [2020-10-13 07:16:30,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3245 to 3165. [2020-10-13 07:16:30,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3165 states. [2020-10-13 07:16:30,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3165 states to 3165 states and 4676 transitions. [2020-10-13 07:16:30,416 INFO L78 Accepts]: Start accepts. Automaton has 3165 states and 4676 transitions. Word has length 1057 [2020-10-13 07:16:30,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:16:30,416 INFO L479 AbstractCegarLoop]: Abstraction has 3165 states and 4676 transitions. [2020-10-13 07:16:30,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 07:16:30,417 INFO L276 IsEmpty]: Start isEmpty. Operand 3165 states and 4676 transitions. [2020-10-13 07:16:30,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1110 [2020-10-13 07:16:30,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:16:30,443 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 07:16:30,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 07:16:30,443 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:16:30,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:16:30,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1322897186, now seen corresponding path program 1 times [2020-10-13 07:16:30,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:16:30,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1871385621] [2020-10-13 07:16:30,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:16:30,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:16:31,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:16:32,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:16:36,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:16:36,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1127 [2020-10-13 07:16:36,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 07:16:36,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-13 07:16:36,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:16:36,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 07:16:36,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:16:36,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 552 [2020-10-13 07:16:36,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 07:16:38,770 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2020-10-13 07:16:38,944 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2020-10-13 07:16:39,103 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2020-10-13 07:16:39,274 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2020-10-13 07:16:39,440 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2020-10-13 07:16:39,694 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2020-10-13 07:16:39,863 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2020-10-13 07:16:40,013 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2020-10-13 07:16:40,162 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 47 [2020-10-13 07:16:40,337 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 46 [2020-10-13 07:16:40,492 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:16:40,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:16:40,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:16:40,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:16:40,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:16:40,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:16:40,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:16:40,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 07:16:40,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:16:40,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:16:40,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:16:40,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:16:40,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:16:40,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:16:40,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:16:40,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:16:41,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:16:41,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 07:16:41,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:16:41,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 516 [2020-10-13 07:16:41,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:16:41,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 07:16:41,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:16:41,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-13 07:16:41,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 07:16:41,888 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-13 07:16:49,848 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 07:16:49,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1871385621] [2020-10-13 07:16:49,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 07:16:49,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 07:16:49,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599352031] [2020-10-13 07:16:49,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 07:16:49,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:16:49,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 07:16:49,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2020-10-13 07:16:49,852 INFO L87 Difference]: Start difference. First operand 3165 states and 4676 transitions. Second operand 19 states. [2020-10-13 07:16:50,105 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-13 07:16:52,214 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 75 [2020-10-13 07:16:52,506 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 67 [2020-10-13 07:16:52,876 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 79 [2020-10-13 07:16:53,615 WARN L193 SmtUtils]: Spent 675.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 169 [2020-10-13 07:16:54,416 WARN L193 SmtUtils]: Spent 726.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 177 [2020-10-13 07:16:55,068 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 36 [2020-10-13 07:16:55,843 WARN L193 SmtUtils]: Spent 730.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 176 [2020-10-13 07:16:59,268 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 206 DAG size of output: 175 [2020-10-13 07:17:08,857 WARN L193 SmtUtils]: Spent 679.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 165 [2020-10-13 07:17:09,702 WARN L193 SmtUtils]: Spent 753.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 171 [2020-10-13 07:17:11,255 WARN L193 SmtUtils]: Spent 731.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 170 [2020-10-13 07:17:21,210 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 202 DAG size of output: 169 [2020-10-13 07:17:22,695 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 206 DAG size of output: 168 [2020-10-13 07:17:48,907 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2020-10-13 07:17:49,172 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2020-10-13 07:17:49,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:17:49,246 INFO L93 Difference]: Finished difference Result 8501 states and 13504 transitions. [2020-10-13 07:17:49,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-13 07:17:49,247 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 1109 [2020-10-13 07:17:49,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:17:49,276 INFO L225 Difference]: With dead ends: 8501 [2020-10-13 07:17:49,276 INFO L226 Difference]: Without dead ends: 6096 [2020-10-13 07:17:49,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=261, Invalid=929, Unknown=0, NotChecked=0, Total=1190 [2020-10-13 07:17:49,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6096 states. [2020-10-13 07:17:49,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6096 to 5963. [2020-10-13 07:17:49,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5963 states. [2020-10-13 07:17:49,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5963 states to 5963 states and 8885 transitions. [2020-10-13 07:17:49,458 INFO L78 Accepts]: Start accepts. Automaton has 5963 states and 8885 transitions. Word has length 1109 [2020-10-13 07:17:49,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:17:49,459 INFO L479 AbstractCegarLoop]: Abstraction has 5963 states and 8885 transitions. [2020-10-13 07:17:49,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 07:17:49,459 INFO L276 IsEmpty]: Start isEmpty. Operand 5963 states and 8885 transitions. [2020-10-13 07:17:49,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1135 [2020-10-13 07:17:49,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:17:49,486 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 07:17:49,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 07:17:49,487 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:17:49,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:17:49,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1442459947, now seen corresponding path program 1 times [2020-10-13 07:17:49,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:17:49,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [380477637] [2020-10-13 07:17:49,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:17:49,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:17:50,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:17:50,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:17:51,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:17:54,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:17:54,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1154 [2020-10-13 07:17:54,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 07:17:54,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 07:17:54,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:17:54,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 07:17:54,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-13 07:17:54,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 994 [2020-10-13 07:17:54,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:17:55,991 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:17:55,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:17:55,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:17:55,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:17:56,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:17:56,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:17:56,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:17:56,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 07:17:56,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:17:56,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 07:17:56,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:17:56,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 07:17:56,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:17:56,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:17:56,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:17:56,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:17:56,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:17:56,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 07:17:56,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:17:56,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 07:17:56,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:17:56,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 07:17:56,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:17:56,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 07:17:56,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:17:56,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 07:17:56,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:17:56,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:17:56,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:17:56,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 07:17:56,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:17:56,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 07:17:56,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:17:56,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:17:56,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:17:56,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 07:17:56,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:17:57,206 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 07:17:57,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [380477637] [2020-10-13 07:17:57,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 07:17:57,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 07:17:57,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74587302] [2020-10-13 07:17:57,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 07:17:57,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:17:57,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 07:17:57,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 07:17:57,216 INFO L87 Difference]: Start difference. First operand 5963 states and 8885 transitions. Second operand 5 states. [2020-10-13 07:17:57,370 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 07:18:13,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:18:13,977 INFO L93 Difference]: Finished difference Result 15501 states and 24313 transitions. [2020-10-13 07:18:13,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 07:18:13,981 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1134 [2020-10-13 07:18:13,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:18:14,027 INFO L225 Difference]: With dead ends: 15501 [2020-10-13 07:18:14,027 INFO L226 Difference]: Without dead ends: 10298 [2020-10-13 07:18:14,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 07:18:14,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10298 states. [2020-10-13 07:18:14,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10298 to 10228. [2020-10-13 07:18:14,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10228 states. [2020-10-13 07:18:14,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10228 states to 10228 states and 15618 transitions. [2020-10-13 07:18:14,339 INFO L78 Accepts]: Start accepts. Automaton has 10228 states and 15618 transitions. Word has length 1134 [2020-10-13 07:18:14,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:18:14,342 INFO L479 AbstractCegarLoop]: Abstraction has 10228 states and 15618 transitions. [2020-10-13 07:18:14,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 07:18:14,342 INFO L276 IsEmpty]: Start isEmpty. Operand 10228 states and 15618 transitions. [2020-10-13 07:18:14,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1145 [2020-10-13 07:18:14,393 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:18:14,394 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 07:18:14,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 07:18:14,395 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:18:14,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:18:14,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1159911218, now seen corresponding path program 1 times [2020-10-13 07:18:14,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:18:14,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1497306294] [2020-10-13 07:18:14,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:18:14,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:18:14,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:18:15,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:18:17,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:18:19,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:18:19,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1166 [2020-10-13 07:18:19,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 07:18:19,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5085 [2020-10-13 07:18:19,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:18:19,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 07:18:19,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-13 07:18:19,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 07:18:19,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0