/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/bitvector/soft_float_1-2a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 05:30:32,946 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 05:30:32,950 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 05:30:33,006 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 05:30:33,006 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 05:30:33,016 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 05:30:33,019 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 05:30:33,024 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 05:30:33,028 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 05:30:33,032 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 05:30:33,033 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 05:30:33,034 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 05:30:33,035 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 05:30:33,038 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 05:30:33,041 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 05:30:33,043 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 05:30:33,046 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 05:30:33,048 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 05:30:33,050 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 05:30:33,059 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 05:30:33,062 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 05:30:33,063 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 05:30:33,064 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 05:30:33,065 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 05:30:33,083 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 05:30:33,083 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 05:30:33,084 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 05:30:33,085 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 05:30:33,085 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 05:30:33,089 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 05:30:33,090 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 05:30:33,094 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 05:30:33,095 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 05:30:33,096 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 05:30:33,098 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 05:30:33,098 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 05:30:33,099 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 05:30:33,099 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 05:30:33,099 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 05:30:33,101 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 05:30:33,102 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 05:30:33,103 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 05:30:33,128 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 05:30:33,129 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 05:30:33,130 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 05:30:33,130 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 05:30:33,131 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 05:30:33,131 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 05:30:33,131 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 05:30:33,131 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 05:30:33,132 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 05:30:33,132 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 05:30:33,132 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 05:30:33,132 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 05:30:33,132 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 05:30:33,133 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 05:30:33,133 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 05:30:33,133 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 05:30:33,133 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 05:30:33,134 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 05:30:33,134 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 05:30:33,134 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 05:30:33,134 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 05:30:33,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 05:30:33,135 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 05:30:33,135 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 05:30:33,135 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 05:30:33,135 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 05:30:33,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 05:30:33,136 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 05:30:33,136 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 05:30:33,136 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 05:30:33,533 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 05:30:33,554 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 05:30:33,564 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 05:30:33,566 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 05:30:33,567 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 05:30:33,568 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_1-2a.c.cil.c [2020-10-13 05:30:33,650 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d7194df4/530bd80b2855433cbf55341b3e3bbd25/FLAG60167d797 [2020-10-13 05:30:34,168 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 05:30:34,169 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/soft_float_1-2a.c.cil.c [2020-10-13 05:30:34,177 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d7194df4/530bd80b2855433cbf55341b3e3bbd25/FLAG60167d797 [2020-10-13 05:30:34,478 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d7194df4/530bd80b2855433cbf55341b3e3bbd25 [2020-10-13 05:30:34,485 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 05:30:34,487 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 05:30:34,488 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 05:30:34,488 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 05:30:34,491 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 05:30:34,492 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:30:34" (1/1) ... [2020-10-13 05:30:34,495 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ecced43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:30:34, skipping insertion in model container [2020-10-13 05:30:34,495 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:30:34" (1/1) ... [2020-10-13 05:30:34,503 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 05:30:34,553 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 05:30:34,768 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 05:30:34,772 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 05:30:34,912 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 05:30:34,928 INFO L208 MainTranslator]: Completed translation [2020-10-13 05:30:34,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:30:34 WrapperNode [2020-10-13 05:30:34,929 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 05:30:34,929 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 05:30:34,930 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 05:30:34,930 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 05:30:34,942 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:30:34" (1/1) ... [2020-10-13 05:30:34,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:30:34" (1/1) ... [2020-10-13 05:30:34,951 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:30:34" (1/1) ... [2020-10-13 05:30:34,951 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:30:34" (1/1) ... [2020-10-13 05:30:34,962 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:30:34" (1/1) ... [2020-10-13 05:30:34,970 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:30:34" (1/1) ... [2020-10-13 05:30:34,973 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:30:34" (1/1) ... [2020-10-13 05:30:34,977 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 05:30:34,977 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 05:30:34,977 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 05:30:34,978 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 05:30:34,978 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:30:34" (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 05:30:35,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 05:30:35,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 05:30:35,041 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-13 05:30:35,041 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2020-10-13 05:30:35,041 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2020-10-13 05:30:35,041 INFO L138 BoogieDeclarations]: Found implementation of procedure mulflt [2020-10-13 05:30:35,042 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 05:30:35,042 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 05:30:35,042 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 05:30:35,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 05:30:35,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-13 05:30:35,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 05:30:35,043 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2020-10-13 05:30:35,043 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2020-10-13 05:30:35,043 INFO L130 BoogieDeclarations]: Found specification of procedure mulflt [2020-10-13 05:30:35,044 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 05:30:35,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 05:30:35,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 05:30:35,613 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 05:30:35,613 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-13 05:30:35,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:30:35 BoogieIcfgContainer [2020-10-13 05:30:35,620 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 05:30:35,621 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 05:30:35,621 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 05:30:35,629 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 05:30:35,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 05:30:34" (1/3) ... [2020-10-13 05:30:35,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39238dbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:30:35, skipping insertion in model container [2020-10-13 05:30:35,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:30:34" (2/3) ... [2020-10-13 05:30:35,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39238dbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:30:35, skipping insertion in model container [2020-10-13 05:30:35,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:30:35" (3/3) ... [2020-10-13 05:30:35,634 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_1-2a.c.cil.c [2020-10-13 05:30:35,645 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 05:30:35,653 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 05:30:35,667 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 05:30:35,693 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 05:30:35,693 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 05:30:35,693 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 05:30:35,694 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 05:30:35,694 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 05:30:35,694 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 05:30:35,694 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 05:30:35,694 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 05:30:35,713 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states. [2020-10-13 05:30:35,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-13 05:30:35,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:30:35,720 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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 05:30:35,721 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:30:35,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:30:35,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1189805110, now seen corresponding path program 1 times [2020-10-13 05:30:35,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:30:35,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1333467830] [2020-10-13 05:30:35,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:30:35,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:35,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:36,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:36,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:36,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:40,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:40,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 05:30:40,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 05:30:40,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 05:30:40,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:40,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 05:30:40,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 05:30:40,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 05:30:40,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 05:30:41,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:30:41,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:41,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:41,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:41,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:30:41,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:41,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:30:41,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:41,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:41,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:41,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:41,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:30:41,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:30:41,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:41,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:41,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:41,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:30:41,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:41,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:30:41,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:41,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:41,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:41,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:41,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:30:41,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:30:41,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:41,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:41,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:41,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:30:41,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:41,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:30:41,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:41,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:41,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:41,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:41,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:30:41,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 05:30:41,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:41,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:41,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:41,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:30:41,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:41,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 05:30:41,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:41,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:30:41,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:41,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:30:41,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:30:41,169 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-13 05:30:41,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1333467830] [2020-10-13 05:30:41,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:30:41,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 05:30:41,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919520431] [2020-10-13 05:30:41,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 05:30:41,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:30:41,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 05:30:41,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-13 05:30:41,200 INFO L87 Difference]: Start difference. First operand 84 states. Second operand 8 states. [2020-10-13 05:30:41,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:30:41,518 INFO L93 Difference]: Finished difference Result 194 states and 311 transitions. [2020-10-13 05:30:41,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 05:30:41,520 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2020-10-13 05:30:41,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:30:41,536 INFO L225 Difference]: With dead ends: 194 [2020-10-13 05:30:41,536 INFO L226 Difference]: Without dead ends: 113 [2020-10-13 05:30:41,542 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-13 05:30:41,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-13 05:30:41,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 109. [2020-10-13 05:30:41,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-13 05:30:41,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 158 transitions. [2020-10-13 05:30:41,613 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 158 transitions. Word has length 36 [2020-10-13 05:30:41,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:30:41,614 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 158 transitions. [2020-10-13 05:30:41,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 05:30:41,614 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 158 transitions. [2020-10-13 05:30:41,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 05:30:41,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:30:41,619 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-13 05:30:41,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 05:30:41,619 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:30:41,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:30:41,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1042192295, now seen corresponding path program 1 times [2020-10-13 05:30:41,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:30:41,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1777218695] [2020-10-13 05:30:41,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:30:41,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:41,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:41,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:41,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:41,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:46,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:46,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-13 05:30:46,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 05:30:46,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 05:30:46,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:46,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:30:46,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 05:30:46,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:30:46,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:46,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:30:46,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:46,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:46,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:46,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:30:46,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:46,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:30:46,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:46,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:46,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:46,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:46,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:30:46,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:30:46,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:46,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:46,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:46,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:30:46,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:46,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:30:46,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:46,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:46,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:46,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:46,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:46,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:30:46,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:46,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:46,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:46,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:30:46,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:46,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:30:46,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:46,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:46,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:46,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:46,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:46,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 05:30:46,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:46,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:46,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:46,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:30:46,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:46,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 05:30:46,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:46,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:30:46,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:46,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 05:30:46,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:46,776 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-13 05:30:46,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1777218695] [2020-10-13 05:30:46,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:30:46,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 05:30:46,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722295602] [2020-10-13 05:30:46,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 05:30:46,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:30:46,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 05:30:46,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 05:30:46,781 INFO L87 Difference]: Start difference. First operand 109 states and 158 transitions. Second operand 6 states. [2020-10-13 05:30:46,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:30:46,908 INFO L93 Difference]: Finished difference Result 186 states and 278 transitions. [2020-10-13 05:30:46,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 05:30:46,908 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-10-13 05:30:46,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:30:46,911 INFO L225 Difference]: With dead ends: 186 [2020-10-13 05:30:46,911 INFO L226 Difference]: Without dead ends: 142 [2020-10-13 05:30:46,913 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-13 05:30:46,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-13 05:30:46,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 139. [2020-10-13 05:30:46,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-13 05:30:46,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 206 transitions. [2020-10-13 05:30:46,933 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 206 transitions. Word has length 40 [2020-10-13 05:30:46,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:30:46,933 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 206 transitions. [2020-10-13 05:30:46,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 05:30:46,934 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 206 transitions. [2020-10-13 05:30:46,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 05:30:46,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:30:46,936 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-13 05:30:46,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 05:30:46,937 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:30:46,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:30:46,937 INFO L82 PathProgramCache]: Analyzing trace with hash 476500203, now seen corresponding path program 1 times [2020-10-13 05:30:46,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:30:46,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1596943482] [2020-10-13 05:30:46,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:30:46,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:46,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:46,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:47,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:47,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:47,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-13 05:30:47,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:30:47,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 946 [2020-10-13 05:30:47,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:47,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 05:30:47,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 05:30:47,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 05:30:47,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:48,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:30:48,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:48,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:48,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:48,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:30:48,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:48,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:30:48,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:48,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:48,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:48,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:48,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:48,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:30:48,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:48,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:48,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:48,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:30:48,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:48,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:30:48,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:48,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:48,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:48,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:48,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:48,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:30:48,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:48,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:48,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:48,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:30:48,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:48,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 05:30:48,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:48,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:30:48,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:48,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:30:48,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:48,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 05:30:48,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:48,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:48,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:48,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:30:48,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:48,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 05:30:48,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:48,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:30:48,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:48,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 05:30:48,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:30:48,111 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-13 05:30:48,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1596943482] [2020-10-13 05:30:48,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:30:48,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 05:30:48,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77077708] [2020-10-13 05:30:48,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 05:30:48,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:30:48,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 05:30:48,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-13 05:30:48,118 INFO L87 Difference]: Start difference. First operand 139 states and 206 transitions. Second operand 9 states. [2020-10-13 05:30:48,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:30:48,411 INFO L93 Difference]: Finished difference Result 350 states and 529 transitions. [2020-10-13 05:30:48,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 05:30:48,412 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2020-10-13 05:30:48,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:30:48,415 INFO L225 Difference]: With dead ends: 350 [2020-10-13 05:30:48,415 INFO L226 Difference]: Without dead ends: 249 [2020-10-13 05:30:48,417 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-13 05:30:48,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-10-13 05:30:48,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 229. [2020-10-13 05:30:48,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-10-13 05:30:48,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 336 transitions. [2020-10-13 05:30:48,443 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 336 transitions. Word has length 40 [2020-10-13 05:30:48,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:30:48,443 INFO L479 AbstractCegarLoop]: Abstraction has 229 states and 336 transitions. [2020-10-13 05:30:48,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 05:30:48,443 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 336 transitions. [2020-10-13 05:30:48,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 05:30:48,446 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:30:48,446 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-13 05:30:48,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 05:30:48,447 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:30:48,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:30:48,447 INFO L82 PathProgramCache]: Analyzing trace with hash 533758505, now seen corresponding path program 1 times [2020-10-13 05:30:48,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:30:48,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [130454394] [2020-10-13 05:30:48,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:30:48,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:48,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:48,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:48,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:49,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:49,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-13 05:30:49,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:30:49,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 928 [2020-10-13 05:30:49,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:49,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 05:30:49,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 05:30:49,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 05:30:49,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:49,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:30:49,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:49,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:49,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:49,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:30:49,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:49,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:30:49,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:49,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:49,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:49,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:49,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:30:49,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:30:49,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:49,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:49,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:49,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:30:49,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:49,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:30:49,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:49,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:49,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:49,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:49,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:30:49,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:30:49,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:49,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:49,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:49,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:30:49,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:49,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 05:30:49,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:49,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:30:49,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:49,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:30:49,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:49,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 05:30:49,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:49,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:49,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:49,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:30:49,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:49,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 05:30:49,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:49,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:30:49,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:49,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 05:30:49,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:49,554 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-13 05:30:49,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [130454394] [2020-10-13 05:30:49,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:30:49,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 05:30:49,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287094307] [2020-10-13 05:30:49,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 05:30:49,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:30:49,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 05:30:49,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-13 05:30:49,557 INFO L87 Difference]: Start difference. First operand 229 states and 336 transitions. Second operand 9 states. [2020-10-13 05:30:49,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:30:49,804 INFO L93 Difference]: Finished difference Result 302 states and 444 transitions. [2020-10-13 05:30:49,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 05:30:49,804 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2020-10-13 05:30:49,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:30:49,807 INFO L225 Difference]: With dead ends: 302 [2020-10-13 05:30:49,807 INFO L226 Difference]: Without dead ends: 243 [2020-10-13 05:30:49,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-10-13 05:30:49,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-10-13 05:30:49,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 219. [2020-10-13 05:30:49,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-10-13 05:30:49,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 320 transitions. [2020-10-13 05:30:49,834 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 320 transitions. Word has length 40 [2020-10-13 05:30:49,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:30:49,835 INFO L479 AbstractCegarLoop]: Abstraction has 219 states and 320 transitions. [2020-10-13 05:30:49,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 05:30:49,837 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 320 transitions. [2020-10-13 05:30:49,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-13 05:30:49,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:30:49,843 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-13 05:30:49,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 05:30:49,843 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:30:49,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:30:49,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1098047782, now seen corresponding path program 1 times [2020-10-13 05:30:49,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:30:49,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1590027996] [2020-10-13 05:30:49,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:30:49,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:49,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:49,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:49,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:50,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:50,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:50,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 05:30:50,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 05:30:50,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 898 [2020-10-13 05:30:50,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:50,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:30:50,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 05:30:50,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 05:30:50,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:50,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:30:50,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:50,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:50,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:50,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:30:50,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:50,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:30:50,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:50,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:50,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:50,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:50,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:50,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:30:50,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:50,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:50,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:50,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:30:50,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:50,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:30:50,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:50,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:50,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:50,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:50,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:50,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:30:50,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:50,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:50,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:50,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:30:50,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:50,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 05:30:50,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:50,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:30:50,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:50,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 05:30:50,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:50,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 05:30:50,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:50,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:50,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:50,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:30:50,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:50,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 05:30:50,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:50,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:30:50,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:50,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 05:30:50,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:50,868 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-13 05:30:50,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1590027996] [2020-10-13 05:30:50,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:30:50,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 05:30:50,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221428309] [2020-10-13 05:30:50,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 05:30:50,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:30:50,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 05:30:50,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 05:30:50,870 INFO L87 Difference]: Start difference. First operand 219 states and 320 transitions. Second operand 6 states. [2020-10-13 05:30:50,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:30:50,977 INFO L93 Difference]: Finished difference Result 402 states and 606 transitions. [2020-10-13 05:30:50,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 05:30:50,978 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-10-13 05:30:50,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:30:50,981 INFO L225 Difference]: With dead ends: 402 [2020-10-13 05:30:50,981 INFO L226 Difference]: Without dead ends: 304 [2020-10-13 05:30:50,982 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-13 05:30:50,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-10-13 05:30:50,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 290. [2020-10-13 05:30:50,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-13 05:30:50,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 429 transitions. [2020-10-13 05:30:50,999 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 429 transitions. Word has length 44 [2020-10-13 05:30:50,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:30:50,999 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 429 transitions. [2020-10-13 05:30:51,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 05:30:51,000 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 429 transitions. [2020-10-13 05:30:51,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-13 05:30:51,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:30:51,002 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:30:51,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 05:30:51,003 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:30:51,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:30:51,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1011299094, now seen corresponding path program 2 times [2020-10-13 05:30:51,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:30:51,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563873638] [2020-10-13 05:30:51,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:30:51,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:51,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:51,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:51,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:51,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 05:30:51,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:30:51,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-13 05:30:51,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:51,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:30:51,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 05:30:51,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 05:30:51,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:51,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:30:51,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:51,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:51,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:51,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:30:51,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:51,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:30:51,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:51,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:51,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:51,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:51,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:51,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:30:51,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:51,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:51,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:51,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:30:51,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:51,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 05:30:51,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:51,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:30:51,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:51,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:30:51,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:30:51,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:30:51,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:51,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:51,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:51,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:30:51,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:51,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 05:30:51,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:51,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:30:51,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:51,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 05:30:51,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:51,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 05:30:51,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:51,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:51,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:51,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:30:51,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:51,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 05:30:51,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:51,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:30:51,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:51,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 05:30:51,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:30:51,237 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-13 05:30:51,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563873638] [2020-10-13 05:30:51,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:30:51,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 05:30:51,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752958749] [2020-10-13 05:30:51,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 05:30:51,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:30:51,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 05:30:51,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 05:30:51,241 INFO L87 Difference]: Start difference. First operand 290 states and 429 transitions. Second operand 6 states. [2020-10-13 05:30:51,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:30:51,354 INFO L93 Difference]: Finished difference Result 712 states and 1077 transitions. [2020-10-13 05:30:51,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 05:30:51,355 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-10-13 05:30:51,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:30:51,359 INFO L225 Difference]: With dead ends: 712 [2020-10-13 05:30:51,359 INFO L226 Difference]: Without dead ends: 516 [2020-10-13 05:30:51,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-13 05:30:51,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2020-10-13 05:30:51,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 332. [2020-10-13 05:30:51,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2020-10-13 05:30:51,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 487 transitions. [2020-10-13 05:30:51,383 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 487 transitions. Word has length 44 [2020-10-13 05:30:51,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:30:51,383 INFO L479 AbstractCegarLoop]: Abstraction has 332 states and 487 transitions. [2020-10-13 05:30:51,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 05:30:51,384 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 487 transitions. [2020-10-13 05:30:51,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-13 05:30:51,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:30:51,387 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:30:51,387 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 05:30:51,387 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:30:51,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:30:51,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1947769654, now seen corresponding path program 1 times [2020-10-13 05:30:51,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:30:51,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [165890546] [2020-10-13 05:30:51,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:30:51,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:51,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:51,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:51,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 05:30:51,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:51,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-13 05:30:51,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:51,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 05:30:51,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 05:30:51,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 05:30:51,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:51,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:30:51,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:51,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:51,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:51,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:30:51,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:51,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:30:51,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:51,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:51,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:51,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:51,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:51,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:30:51,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:51,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:51,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:51,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:30:51,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:51,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:30:51,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:51,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:51,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:51,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:51,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:51,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:30:51,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:51,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:51,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:51,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:30:51,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:51,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 05:30:51,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:51,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:30:51,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:51,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 05:30:51,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:51,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 05:30:51,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:51,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:51,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:51,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:30:51,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:51,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 05:30:51,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:51,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:30:51,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:51,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 05:30:51,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:51,703 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-13 05:30:51,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [165890546] [2020-10-13 05:30:51,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:30:51,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 05:30:51,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005811039] [2020-10-13 05:30:51,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 05:30:51,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:30:51,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 05:30:51,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-13 05:30:51,706 INFO L87 Difference]: Start difference. First operand 332 states and 487 transitions. Second operand 8 states. [2020-10-13 05:30:51,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:30:51,896 INFO L93 Difference]: Finished difference Result 427 states and 623 transitions. [2020-10-13 05:30:51,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 05:30:51,897 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 48 [2020-10-13 05:30:51,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:30:51,900 INFO L225 Difference]: With dead ends: 427 [2020-10-13 05:30:51,900 INFO L226 Difference]: Without dead ends: 367 [2020-10-13 05:30:51,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-13 05:30:51,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2020-10-13 05:30:51,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 353. [2020-10-13 05:30:51,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2020-10-13 05:30:51,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 512 transitions. [2020-10-13 05:30:51,918 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 512 transitions. Word has length 48 [2020-10-13 05:30:51,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:30:51,918 INFO L479 AbstractCegarLoop]: Abstraction has 353 states and 512 transitions. [2020-10-13 05:30:51,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 05:30:51,919 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 512 transitions. [2020-10-13 05:30:51,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-13 05:30:51,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:30:51,921 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:30:51,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 05:30:51,921 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:30:51,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:30:51,921 INFO L82 PathProgramCache]: Analyzing trace with hash 2005027956, now seen corresponding path program 1 times [2020-10-13 05:30:51,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:30:51,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1971885254] [2020-10-13 05:30:51,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:30:51,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:51,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:52,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:52,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 05:30:52,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:52,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-10-13 05:30:52,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:52,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 05:30:52,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 05:30:52,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 05:30:52,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:52,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:30:52,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:52,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:52,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:52,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:30:52,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:52,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:30:52,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:52,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:52,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:52,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:52,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:52,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:30:52,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:52,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:52,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:52,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:30:52,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:52,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:30:52,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:52,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:52,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:52,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:52,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:52,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:30:52,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:52,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:52,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:52,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:30:52,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:52,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 05:30:52,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:52,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:30:52,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:52,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 05:30:52,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:52,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 05:30:52,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:52,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:52,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:52,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:30:52,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:52,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 05:30:52,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:52,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:30:52,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:52,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 05:30:52,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:52,459 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-13 05:30:52,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1971885254] [2020-10-13 05:30:52,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:30:52,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-13 05:30:52,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669075092] [2020-10-13 05:30:52,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 05:30:52,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:30:52,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 05:30:52,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-13 05:30:52,462 INFO L87 Difference]: Start difference. First operand 353 states and 512 transitions. Second operand 13 states. [2020-10-13 05:30:53,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:30:53,083 INFO L93 Difference]: Finished difference Result 420 states and 602 transitions. [2020-10-13 05:30:53,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 05:30:53,084 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 48 [2020-10-13 05:30:53,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:30:53,088 INFO L225 Difference]: With dead ends: 420 [2020-10-13 05:30:53,089 INFO L226 Difference]: Without dead ends: 389 [2020-10-13 05:30:53,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2020-10-13 05:30:53,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2020-10-13 05:30:53,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 372. [2020-10-13 05:30:53,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2020-10-13 05:30:53,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 534 transitions. [2020-10-13 05:30:53,123 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 534 transitions. Word has length 48 [2020-10-13 05:30:53,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:30:53,124 INFO L479 AbstractCegarLoop]: Abstraction has 372 states and 534 transitions. [2020-10-13 05:30:53,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 05:30:53,124 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 534 transitions. [2020-10-13 05:30:53,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-13 05:30:53,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:30:53,126 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-13 05:30:53,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 05:30:53,127 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:30:53,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:30:53,127 INFO L82 PathProgramCache]: Analyzing trace with hash 415515576, now seen corresponding path program 1 times [2020-10-13 05:30:53,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:30:53,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [258133789] [2020-10-13 05:30:53,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:30:53,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 05:30:53,148 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 05:30:53,148 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 05:30:53,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 05:30:53,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 05:30:53 BoogieIcfgContainer [2020-10-13 05:30:53,192 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 05:30:53,199 INFO L168 Benchmark]: Toolchain (without parser) took 18707.36 ms. Allocated memory was 140.0 MB in the beginning and 496.5 MB in the end (delta: 356.5 MB). Free memory was 102.6 MB in the beginning and 292.9 MB in the end (delta: -190.3 MB). Peak memory consumption was 166.2 MB. Max. memory is 7.1 GB. [2020-10-13 05:30:53,201 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-10-13 05:30:53,202 INFO L168 Benchmark]: CACSL2BoogieTranslator took 441.39 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 102.3 MB in the beginning and 179.5 MB in the end (delta: -77.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2020-10-13 05:30:53,202 INFO L168 Benchmark]: Boogie Preprocessor took 47.37 ms. Allocated memory is still 203.4 MB. Free memory was 179.5 MB in the beginning and 177.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-13 05:30:53,203 INFO L168 Benchmark]: RCFGBuilder took 642.88 ms. Allocated memory is still 203.4 MB. Free memory was 177.4 MB in the beginning and 146.9 MB in the end (delta: 30.5 MB). Peak memory consumption was 30.5 MB. Max. memory is 7.1 GB. [2020-10-13 05:30:53,206 INFO L168 Benchmark]: TraceAbstraction took 17571.00 ms. Allocated memory was 203.4 MB in the beginning and 496.5 MB in the end (delta: 293.1 MB). Free memory was 146.2 MB in the beginning and 292.9 MB in the end (delta: -146.7 MB). Peak memory consumption was 146.4 MB. Max. memory is 7.1 GB. [2020-10-13 05:30:53,217 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 441.39 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 102.3 MB in the beginning and 179.5 MB in the end (delta: -77.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 47.37 ms. Allocated memory is still 203.4 MB. Free memory was 179.5 MB in the beginning and 177.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 642.88 ms. Allocated memory is still 203.4 MB. Free memory was 177.4 MB in the beginning and 146.9 MB in the end (delta: 30.5 MB). Peak memory consumption was 30.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 17571.00 ms. Allocated memory was 203.4 MB in the beginning and 496.5 MB in the end (delta: 293.1 MB). Free memory was 146.2 MB in the beginning and 292.9 MB in the end (delta: -146.7 MB). Peak memory consumption was 146.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 8]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 101, overapproximation of bitwiseAnd at line 99. Possible FailurePath: [L217] unsigned int a ; [L218] unsigned int ma = __VERIFIER_nondet_uint(); [L219] signed char ea = __VERIFIER_nondet_char(); [L220] unsigned int b ; [L221] unsigned int mb = __VERIFIER_nondet_uint(); [L222] signed char eb = __VERIFIER_nondet_char(); [L223] unsigned int r_add ; [L224] unsigned int zero ; [L225] int sa ; [L226] int sb ; [L227] int tmp ; [L228] int tmp___0 ; [L229] int tmp___1 ; [L230] int tmp___2 ; [L231] int tmp___3 ; [L232] int tmp___4 ; [L233] int tmp___5 ; [L234] int tmp___6 ; [L235] int tmp___7 ; [L236] int tmp___8 ; [L237] int tmp___9 ; [L238] int __retres23 ; [L242] CALL, EXPR base2flt(0, 0) [L16] unsigned int res ; [L17] unsigned int __retres4 ; [L20] COND TRUE ! m [L21] __retres4 = 0U [L71] return (__retres4); [L242] RET, EXPR base2flt(0, 0) [L242] zero = base2flt(0, 0) [L243] CALL, EXPR base2flt(ma, ea) [L16] unsigned int res ; [L17] unsigned int __retres4 ; [L20] COND FALSE !(! m) [L26] COND FALSE !(m < 1U << 24U) [L48] COND TRUE 1 [L50] COND TRUE m >= 1U << 25U [L55] COND TRUE e >= 127 [L56] __retres4 = 4294967295U [L71] return (__retres4); [L243] RET, EXPR base2flt(ma, ea) [L243] a = base2flt(ma, ea) [L244] CALL, EXPR base2flt(mb, eb) [L16] unsigned int res ; [L17] unsigned int __retres4 ; [L20] COND FALSE !(! m) [L26] COND FALSE !(m < 1U << 24U) [L48] COND TRUE 1 [L50] COND FALSE !(m >= 1U << 25U) [L67] m = m & ~ (1U << 24U) [L68] res = m | ((unsigned int ) (e + 128) << 24U) [L69] __retres4 = res [L71] return (__retres4); [L244] RET, EXPR base2flt(mb, eb) [L244] b = base2flt(mb, eb) [L246] COND FALSE !(a < zero) [L249] COND TRUE a > zero [L250] tmp = 1 [L254] sa = tmp [L256] COND FALSE !(b < zero) [L259] COND TRUE b > zero [L260] tmp___0 = 1 [L264] sb = tmp___0 [L267] CALL addflt(a, b) [L75] unsigned int res ; [L76] unsigned int ma ; [L77] unsigned int mb ; [L78] unsigned int delta ; [L79] int ea ; [L80] int eb ; [L81] unsigned int tmp ; [L82] unsigned int __retres10 ; [L85] COND FALSE !(a < b) [L92] COND FALSE !(! b) [L99] ma = a & ((1U << 24U) - 1U) [L100] ea = (int )(a >> 24U) - 128 [L101] ma = ma | (1U << 24U) [L102] mb = b & ((1U << 24U) - 1U) [L103] eb = (int )(b >> 24U) - 128 [L104] mb = mb | (1U << 24U) [L105] CALL __VERIFIER_assert(ea >= eb) [L7] COND TRUE !(cond) [L8] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 93 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 17.4s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1063 SDtfs, 490 SDslu, 6078 SDs, 0 SdLazy, 1233 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 149 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=372occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 280 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 14.6s InterpolantComputationTime, 388 NumberOfCodeBlocks, 388 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 332 ConstructedInterpolants, 0 QuantifiedInterpolants, 30664 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 117/135 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...