/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_1-3a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 05:30:36,379 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 05:30:36,382 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 05:30:36,422 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 05:30:36,423 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 05:30:36,430 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 05:30:36,432 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 05:30:36,436 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 05:30:36,438 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 05:30:36,442 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 05:30:36,443 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 05:30:36,444 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 05:30:36,444 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 05:30:36,447 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 05:30:36,450 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 05:30:36,451 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 05:30:36,452 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 05:30:36,453 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 05:30:36,454 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 05:30:36,460 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 05:30:36,462 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 05:30:36,463 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 05:30:36,464 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 05:30:36,465 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 05:30:36,467 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 05:30:36,467 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 05:30:36,467 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 05:30:36,468 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 05:30:36,469 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 05:30:36,469 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 05:30:36,470 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 05:30:36,470 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 05:30:36,471 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 05:30:36,472 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 05:30:36,473 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 05:30:36,473 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 05:30:36,473 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 05:30:36,474 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 05:30:36,474 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 05:30:36,475 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 05:30:36,475 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 05:30:36,476 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 05:30:36,498 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 05:30:36,498 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 05:30:36,499 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 05:30:36,500 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 05:30:36,500 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 05:30:36,500 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 05:30:36,500 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 05:30:36,500 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 05:30:36,501 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 05:30:36,501 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 05:30:36,501 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 05:30:36,501 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 05:30:36,501 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 05:30:36,502 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 05:30:36,502 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 05:30:36,502 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 05:30:36,502 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 05:30:36,502 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 05:30:36,503 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 05:30:36,503 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 05:30:36,503 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 05:30:36,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 05:30:36,503 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 05:30:36,504 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 05:30:36,504 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 05:30:36,504 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 05:30:36,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 05:30:36,504 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 05:30:36,505 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 05:30:36,505 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 05:30:36,795 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 05:30:36,807 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 05:30:36,810 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 05:30:36,812 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 05:30:36,812 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 05:30:36,813 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_1-3a.c.cil.c [2020-10-13 05:30:36,872 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b6fe8c86f/93c1c9b8f42246739117c89ff4686e4a/FLAG2e69a7c10 [2020-10-13 05:30:37,379 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 05:30:37,380 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/soft_float_1-3a.c.cil.c [2020-10-13 05:30:37,393 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b6fe8c86f/93c1c9b8f42246739117c89ff4686e4a/FLAG2e69a7c10 [2020-10-13 05:30:37,716 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b6fe8c86f/93c1c9b8f42246739117c89ff4686e4a [2020-10-13 05:30:37,725 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 05:30:37,727 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 05:30:37,728 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 05:30:37,729 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 05:30:37,733 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 05:30:37,734 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:30:37" (1/1) ... [2020-10-13 05:30:37,737 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11d031f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:30:37, skipping insertion in model container [2020-10-13 05:30:37,737 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:30:37" (1/1) ... [2020-10-13 05:30:37,746 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 05:30:37,793 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 05:30:38,134 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 05:30:38,139 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 05:30:38,271 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 05:30:38,287 INFO L208 MainTranslator]: Completed translation [2020-10-13 05:30:38,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:30:38 WrapperNode [2020-10-13 05:30:38,287 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 05:30:38,288 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 05:30:38,288 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 05:30:38,289 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 05:30:38,303 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:30:38" (1/1) ... [2020-10-13 05:30:38,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:30:38" (1/1) ... [2020-10-13 05:30:38,313 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:30:38" (1/1) ... [2020-10-13 05:30:38,313 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:30:38" (1/1) ... [2020-10-13 05:30:38,324 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:30:38" (1/1) ... [2020-10-13 05:30:38,333 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:30:38" (1/1) ... [2020-10-13 05:30:38,335 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:30:38" (1/1) ... [2020-10-13 05:30:38,339 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 05:30:38,340 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 05:30:38,340 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 05:30:38,340 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 05:30:38,341 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:30:38" (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 05:30:38,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 05:30:38,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 05:30:38,398 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-13 05:30:38,398 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2020-10-13 05:30:38,399 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2020-10-13 05:30:38,399 INFO L138 BoogieDeclarations]: Found implementation of procedure mulflt [2020-10-13 05:30:38,399 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 05:30:38,399 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 05:30:38,399 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 05:30:38,399 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-13 05:30:38,400 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 05:30:38,400 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2020-10-13 05:30:38,400 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2020-10-13 05:30:38,400 INFO L130 BoogieDeclarations]: Found specification of procedure mulflt [2020-10-13 05:30:38,400 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 05:30:38,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 05:30:38,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 05:30:39,012 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 05:30:39,012 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-13 05:30:39,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:30:39 BoogieIcfgContainer [2020-10-13 05:30:39,017 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 05:30:39,018 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 05:30:39,018 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 05:30:39,022 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 05:30:39,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 05:30:37" (1/3) ... [2020-10-13 05:30:39,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8947ce1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:30:39, skipping insertion in model container [2020-10-13 05:30:39,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:30:38" (2/3) ... [2020-10-13 05:30:39,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8947ce1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:30:39, skipping insertion in model container [2020-10-13 05:30:39,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:30:39" (3/3) ... [2020-10-13 05:30:39,026 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_1-3a.c.cil.c [2020-10-13 05:30:39,037 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 05:30:39,045 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 05:30:39,059 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 05:30:39,085 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 05:30:39,086 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 05:30:39,086 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 05:30:39,086 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 05:30:39,087 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 05:30:39,087 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 05:30:39,087 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 05:30:39,087 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 05:30:39,105 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states. [2020-10-13 05:30:39,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-13 05:30:39,113 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:30:39,114 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 05:30:39,114 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:30:39,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:30:39,119 INFO L82 PathProgramCache]: Analyzing trace with hash 931229349, now seen corresponding path program 1 times [2020-10-13 05:30:39,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:30:39,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [539638145] [2020-10-13 05:30:39,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:30:39,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:39,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:39,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:39,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:39,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:44,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:44,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 05:30:44,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 05:30:44,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 05:30:44,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:44,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 05:30:44,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 05:30:44,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 05:30:44,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 05:30:44,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:30:44,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:44,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:44,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:44,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:30:44,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:44,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:30:44,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:44,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:44,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:44,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:44,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:44,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:30:44,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:44,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:44,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:44,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:30:44,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:44,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 05:30:44,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:44,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:44,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:44,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:44,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:44,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:30:44,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:44,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:44,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:44,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:30:44,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:44,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:30:44,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:44,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:44,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:44,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:44,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:44,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 05:30:44,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:44,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:44,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:44,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:30:44,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:44,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 05:30:44,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:44,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:30:44,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:44,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:30:44,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:30:44,541 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 05:30:44,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [539638145] [2020-10-13 05:30:44,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:30:44,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 05:30:44,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097243299] [2020-10-13 05:30:44,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 05:30:44,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:30:44,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 05:30:44,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-13 05:30:44,573 INFO L87 Difference]: Start difference. First operand 84 states. Second operand 8 states. [2020-10-13 05:30:44,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:30:44,900 INFO L93 Difference]: Finished difference Result 194 states and 312 transitions. [2020-10-13 05:30:44,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 05:30:44,902 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2020-10-13 05:30:44,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:30:44,917 INFO L225 Difference]: With dead ends: 194 [2020-10-13 05:30:44,918 INFO L226 Difference]: Without dead ends: 113 [2020-10-13 05:30:44,923 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 05:30:44,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-13 05:30:44,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 109. [2020-10-13 05:30:44,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-13 05:30:44,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 159 transitions. [2020-10-13 05:30:44,988 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 159 transitions. Word has length 36 [2020-10-13 05:30:44,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:30:44,989 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 159 transitions. [2020-10-13 05:30:44,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 05:30:44,989 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 159 transitions. [2020-10-13 05:30:44,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 05:30:44,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:30:44,993 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 05:30:44,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 05:30:44,994 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:30:44,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:30:44,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1474344426, now seen corresponding path program 1 times [2020-10-13 05:30:44,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:30:44,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484983610] [2020-10-13 05:30:44,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:30:45,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:45,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:45,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:45,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:45,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:49,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:49,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-13 05:30:49,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 05:30:49,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4133 [2020-10-13 05:30:49,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:49,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:30:49,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 05:30:49,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:30:49,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:30:49,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:30:49,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:49,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:49,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:49,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:30:49,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:49,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:30:49,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:49,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:49,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:49,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:49,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:30:49,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:30:49,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:49,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:49,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:49,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:30:49,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:49,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:30:49,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:49,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:49,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:49,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:49,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:30:49,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:30:49,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:49,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:49,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:49,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:30:49,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:49,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:30:49,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:49,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:49,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:49,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:49,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:30:49,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 05:30:49,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:49,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:49,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:49,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:30:49,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:49,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 05:30:49,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:49,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:30:49,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:49,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 05:30:49,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:49,338 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 05:30:49,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [484983610] [2020-10-13 05:30:49,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:30:49,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 05:30:49,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362135629] [2020-10-13 05:30:49,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 05:30:49,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:30:49,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 05:30:49,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 05:30:49,344 INFO L87 Difference]: Start difference. First operand 109 states and 159 transitions. Second operand 6 states. [2020-10-13 05:30:49,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:30:49,510 INFO L93 Difference]: Finished difference Result 186 states and 280 transitions. [2020-10-13 05:30:49,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 05:30:49,512 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-10-13 05:30:49,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:30:49,514 INFO L225 Difference]: With dead ends: 186 [2020-10-13 05:30:49,515 INFO L226 Difference]: Without dead ends: 142 [2020-10-13 05:30:49,519 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 05:30:49,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-13 05:30:49,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 139. [2020-10-13 05:30:49,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-13 05:30:49,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 207 transitions. [2020-10-13 05:30:49,560 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 207 transitions. Word has length 40 [2020-10-13 05:30:49,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:30:49,561 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 207 transitions. [2020-10-13 05:30:49,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 05:30:49,561 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 207 transitions. [2020-10-13 05:30:49,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 05:30:49,565 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:30:49,566 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 05:30:49,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 05:30:49,567 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:30:49,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:30:49,568 INFO L82 PathProgramCache]: Analyzing trace with hash -2040036518, now seen corresponding path program 1 times [2020-10-13 05:30:49,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:30:49,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1025088099] [2020-10-13 05:30:49,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:30:49,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:49,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:49,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:49,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:50,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:50,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-13 05:30:50,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:30:50,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-10-13 05:30:50,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:50,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 05:30:50,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 05:30:50,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 05:30:50,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:50,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:30:50,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:50,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:50,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:50,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:30:50,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:50,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:30:50,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:50,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:50,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:50,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:50,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:50,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:30:50,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:50,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:50,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:50,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:30:50,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:50,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:30:50,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:50,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:50,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:50,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:50,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:50,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:30:50,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:50,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:50,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:50,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:30:50,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:50,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 05:30:50,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:50,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:30:50,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:50,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:30:50,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:50,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 05:30:50,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:50,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:50,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:50,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:30:50,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:50,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 05:30:50,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:50,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:30:50,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:50,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 05:30:50,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:50,762 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 05:30:50,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1025088099] [2020-10-13 05:30:50,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:30:50,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 05:30:50,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615441568] [2020-10-13 05:30:50,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 05:30:50,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:30:50,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 05:30:50,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-13 05:30:50,765 INFO L87 Difference]: Start difference. First operand 139 states and 207 transitions. Second operand 9 states. [2020-10-13 05:30:51,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:30:51,043 INFO L93 Difference]: Finished difference Result 350 states and 532 transitions. [2020-10-13 05:30:51,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 05:30:51,044 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2020-10-13 05:30:51,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:30:51,047 INFO L225 Difference]: With dead ends: 350 [2020-10-13 05:30:51,048 INFO L226 Difference]: Without dead ends: 249 [2020-10-13 05:30:51,050 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 05:30:51,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-10-13 05:30:51,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 229. [2020-10-13 05:30:51,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-10-13 05:30:51,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 338 transitions. [2020-10-13 05:30:51,075 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 338 transitions. Word has length 40 [2020-10-13 05:30:51,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:30:51,076 INFO L479 AbstractCegarLoop]: Abstraction has 229 states and 338 transitions. [2020-10-13 05:30:51,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 05:30:51,076 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 338 transitions. [2020-10-13 05:30:51,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 05:30:51,079 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:30:51,079 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 05:30:51,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 05:30:51,080 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:30:51,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:30:51,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1982778216, now seen corresponding path program 1 times [2020-10-13 05:30:51,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:30:51,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [632873845] [2020-10-13 05:30:51,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:30:51,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:51,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:51,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:51,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:51,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:51,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-13 05:30:51,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:30:51,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 794 [2020-10-13 05:30:51,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:51,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 05:30:51,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 05:30:51,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 05:30:51,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:51,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:30:51,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:51,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:51,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:51,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:30:51,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:51,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:30:51,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:51,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:51,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:51,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:51,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:30:51,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:30:51,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:51,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:51,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:51,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:30:51,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:51,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:30:51,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:51,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:51,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:51,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:51,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:30:51,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:30:51,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:51,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:52,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:52,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:30:52,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:52,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 05:30:52,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:52,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:30:52,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:52,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:30:52,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:30:52,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 05:30:52,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:52,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:52,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:52,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:30:52,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:52,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 05:30:52,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:52,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:30:52,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:52,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 05:30:52,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:52,063 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 05:30:52,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [632873845] [2020-10-13 05:30:52,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:30:52,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 05:30:52,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452184836] [2020-10-13 05:30:52,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 05:30:52,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:30:52,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 05:30:52,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-13 05:30:52,066 INFO L87 Difference]: Start difference. First operand 229 states and 338 transitions. Second operand 9 states. [2020-10-13 05:30:52,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:30:52,326 INFO L93 Difference]: Finished difference Result 302 states and 446 transitions. [2020-10-13 05:30:52,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 05:30:52,327 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2020-10-13 05:30:52,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:30:52,330 INFO L225 Difference]: With dead ends: 302 [2020-10-13 05:30:52,330 INFO L226 Difference]: Without dead ends: 243 [2020-10-13 05:30:52,331 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 05:30:52,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-10-13 05:30:52,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 219. [2020-10-13 05:30:52,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-10-13 05:30:52,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 321 transitions. [2020-10-13 05:30:52,349 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 321 transitions. Word has length 40 [2020-10-13 05:30:52,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:30:52,350 INFO L479 AbstractCegarLoop]: Abstraction has 219 states and 321 transitions. [2020-10-13 05:30:52,350 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 05:30:52,350 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 321 transitions. [2020-10-13 05:30:52,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-13 05:30:52,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:30:52,352 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 05:30:52,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 05:30:52,353 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:30:52,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:30:52,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1684675657, now seen corresponding path program 1 times [2020-10-13 05:30:52,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:30:52,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1657307913] [2020-10-13 05:30:52,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:30:52,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:52,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:52,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:52,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:52,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:53,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:53,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 05:30:53,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 05:30:53,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 942 [2020-10-13 05:30:53,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:53,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:30:53,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 05:30:53,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 05:30:53,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:53,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:30:53,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:53,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:53,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:53,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:30:53,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:53,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:30:53,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:53,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:53,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:53,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:53,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:53,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:30:53,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:53,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:53,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:53,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:30:53,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:53,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:30:53,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:53,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:53,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:53,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:53,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:30:53,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:30:53,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:53,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:53,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:53,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:30:53,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:53,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 05:30:53,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:53,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:30:53,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:53,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 05:30:53,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:53,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 05:30:53,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:53,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:53,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:53,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:30:53,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:53,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 05:30:53,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:53,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:30:53,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:53,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 05:30:53,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:53,417 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 05:30:53,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1657307913] [2020-10-13 05:30:53,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:30:53,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 05:30:53,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285272516] [2020-10-13 05:30:53,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 05:30:53,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:30:53,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 05:30:53,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 05:30:53,420 INFO L87 Difference]: Start difference. First operand 219 states and 321 transitions. Second operand 6 states. [2020-10-13 05:30:53,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:30:53,545 INFO L93 Difference]: Finished difference Result 402 states and 608 transitions. [2020-10-13 05:30:53,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 05:30:53,547 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-10-13 05:30:53,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:30:53,550 INFO L225 Difference]: With dead ends: 402 [2020-10-13 05:30:53,551 INFO L226 Difference]: Without dead ends: 304 [2020-10-13 05:30:53,552 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 05:30:53,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-10-13 05:30:53,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 290. [2020-10-13 05:30:53,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-13 05:30:53,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 430 transitions. [2020-10-13 05:30:53,578 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 430 transitions. Word has length 44 [2020-10-13 05:30:53,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:30:53,578 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 430 transitions. [2020-10-13 05:30:53,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 05:30:53,578 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 430 transitions. [2020-10-13 05:30:53,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-13 05:30:53,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:30:53,581 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 05:30:53,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 05:30:53,581 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:30:53,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:30:53,581 INFO L82 PathProgramCache]: Analyzing trace with hash -500944763, now seen corresponding path program 2 times [2020-10-13 05:30:53,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:30:53,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [394442210] [2020-10-13 05:30:53,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:30:53,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:53,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:53,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:53,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:53,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 05:30:53,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:30:53,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-13 05:30:53,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:53,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:30:53,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 05:30:53,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 05:30:53,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:30:53,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:30:53,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:53,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:53,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:53,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:30:53,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:53,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:30:53,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:53,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:53,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:53,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:53,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:53,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:30:53,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:53,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:53,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:53,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:30:53,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:53,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 05:30:53,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:53,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:30:53,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:53,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:30:53,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:53,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:30:53,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:53,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:53,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:53,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:30:53,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:53,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 05:30:53,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:53,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:30:53,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:53,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 05:30:53,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:53,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 05:30:53,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:53,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:53,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:53,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:30:53,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:53,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 05:30:53,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:53,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:30:53,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:53,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 05:30:53,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:53,831 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 05:30:53,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [394442210] [2020-10-13 05:30:53,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:30:53,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 05:30:53,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010846993] [2020-10-13 05:30:53,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 05:30:53,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:30:53,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 05:30:53,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 05:30:53,834 INFO L87 Difference]: Start difference. First operand 290 states and 430 transitions. Second operand 6 states. [2020-10-13 05:30:53,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:30:53,959 INFO L93 Difference]: Finished difference Result 712 states and 1079 transitions. [2020-10-13 05:30:53,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 05:30:53,960 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-10-13 05:30:53,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:30:53,973 INFO L225 Difference]: With dead ends: 712 [2020-10-13 05:30:53,973 INFO L226 Difference]: Without dead ends: 516 [2020-10-13 05:30:53,975 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 05:30:53,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2020-10-13 05:30:54,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 332. [2020-10-13 05:30:54,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2020-10-13 05:30:54,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 488 transitions. [2020-10-13 05:30:54,008 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 488 transitions. Word has length 44 [2020-10-13 05:30:54,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:30:54,009 INFO L479 AbstractCegarLoop]: Abstraction has 332 states and 488 transitions. [2020-10-13 05:30:54,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 05:30:54,010 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 488 transitions. [2020-10-13 05:30:54,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-13 05:30:54,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:30:54,014 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 05:30:54,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 05:30:54,015 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:30:54,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:30:54,015 INFO L82 PathProgramCache]: Analyzing trace with hash -440320475, now seen corresponding path program 1 times [2020-10-13 05:30:54,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:30:54,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1372158551] [2020-10-13 05:30:54,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:30:54,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:54,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:54,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:54,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 05:30:54,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:54,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-13 05:30:54,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:54,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 05:30:54,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 05:30:54,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 05:30:54,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:54,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:30:54,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:54,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:54,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:54,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:30:54,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:54,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:30:54,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:54,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:54,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:54,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:54,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:54,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:30:54,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:54,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:54,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:54,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:30:54,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:54,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:30:54,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:54,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:54,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:54,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:54,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:54,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:30:54,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:54,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:54,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:54,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:30:54,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:54,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 05:30:54,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:54,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:30:54,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:54,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 05:30:54,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:54,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 05:30:54,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:54,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:54,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:54,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:30:54,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:54,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 05:30:54,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:54,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:30:54,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:54,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 05:30:54,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:54,364 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 05:30:54,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1372158551] [2020-10-13 05:30:54,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:30:54,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 05:30:54,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925036804] [2020-10-13 05:30:54,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 05:30:54,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:30:54,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 05:30:54,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-13 05:30:54,367 INFO L87 Difference]: Start difference. First operand 332 states and 488 transitions. Second operand 8 states. [2020-10-13 05:30:54,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:30:54,547 INFO L93 Difference]: Finished difference Result 427 states and 626 transitions. [2020-10-13 05:30:54,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 05:30:54,548 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 48 [2020-10-13 05:30:54,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:30:54,551 INFO L225 Difference]: With dead ends: 427 [2020-10-13 05:30:54,551 INFO L226 Difference]: Without dead ends: 367 [2020-10-13 05:30:54,552 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 05:30:54,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2020-10-13 05:30:54,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 353. [2020-10-13 05:30:54,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2020-10-13 05:30:54,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 514 transitions. [2020-10-13 05:30:54,567 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 514 transitions. Word has length 48 [2020-10-13 05:30:54,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:30:54,568 INFO L479 AbstractCegarLoop]: Abstraction has 353 states and 514 transitions. [2020-10-13 05:30:54,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 05:30:54,568 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 514 transitions. [2020-10-13 05:30:54,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-13 05:30:54,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:30:54,570 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 05:30:54,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 05:30:54,570 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:30:54,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:30:54,571 INFO L82 PathProgramCache]: Analyzing trace with hash -383062173, now seen corresponding path program 1 times [2020-10-13 05:30:54,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:30:54,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [15954695] [2020-10-13 05:30:54,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:30:54,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:54,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:54,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:54,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 05:30:54,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:54,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-10-13 05:30:54,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:54,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 05:30:54,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 05:30:54,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 05:30:54,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:55,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:30:55,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:55,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:55,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:55,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:30:55,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:55,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:30:55,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:55,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:55,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:55,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:55,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:55,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:30:55,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:55,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:55,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:55,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:30:55,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:55,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:30:55,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:55,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:55,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:55,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:55,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:55,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:30:55,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:55,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:55,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:55,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:30:55,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:55,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 05:30:55,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:55,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:30:55,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:55,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 05:30:55,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:55,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 05:30:55,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:55,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:55,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:55,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:30:55,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:55,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 05:30:55,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:55,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:30:55,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:55,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 05:30:55,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:55,085 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 05:30:55,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [15954695] [2020-10-13 05:30:55,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:30:55,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-13 05:30:55,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530973161] [2020-10-13 05:30:55,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 05:30:55,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:30:55,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 05:30:55,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-13 05:30:55,087 INFO L87 Difference]: Start difference. First operand 353 states and 514 transitions. Second operand 13 states. [2020-10-13 05:30:55,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:30:55,695 INFO L93 Difference]: Finished difference Result 420 states and 605 transitions. [2020-10-13 05:30:55,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 05:30:55,696 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 48 [2020-10-13 05:30:55,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:30:55,699 INFO L225 Difference]: With dead ends: 420 [2020-10-13 05:30:55,699 INFO L226 Difference]: Without dead ends: 389 [2020-10-13 05:30:55,700 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 05:30:55,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2020-10-13 05:30:55,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 372. [2020-10-13 05:30:55,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2020-10-13 05:30:55,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 537 transitions. [2020-10-13 05:30:55,721 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 537 transitions. Word has length 48 [2020-10-13 05:30:55,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:30:55,721 INFO L479 AbstractCegarLoop]: Abstraction has 372 states and 537 transitions. [2020-10-13 05:30:55,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 05:30:55,722 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 537 transitions. [2020-10-13 05:30:55,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-13 05:30:55,723 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:30:55,723 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 05:30:55,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 05:30:55,724 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:30:55,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:30:55,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1972574553, now seen corresponding path program 1 times [2020-10-13 05:30:55,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:30:55,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1784352143] [2020-10-13 05:30:55,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:30:55,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 05:30:55,742 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 05:30:55,742 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 05:30:55,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 05:30:55,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 05:30:55 BoogieIcfgContainer [2020-10-13 05:30:55,772 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 05:30:55,775 INFO L168 Benchmark]: Toolchain (without parser) took 18047.71 ms. Allocated memory was 141.0 MB in the beginning and 483.4 MB in the end (delta: 342.4 MB). Free memory was 103.2 MB in the beginning and 136.5 MB in the end (delta: -33.2 MB). Peak memory consumption was 309.1 MB. Max. memory is 7.1 GB. [2020-10-13 05:30:55,776 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-13 05:30:55,777 INFO L168 Benchmark]: CACSL2BoogieTranslator took 559.47 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 103.0 MB in the beginning and 179.5 MB in the end (delta: -76.5 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-10-13 05:30:55,777 INFO L168 Benchmark]: Boogie Preprocessor took 50.87 ms. Allocated memory is still 203.4 MB. Free memory was 179.5 MB in the beginning and 176.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-10-13 05:30:55,778 INFO L168 Benchmark]: RCFGBuilder took 677.30 ms. Allocated memory is still 203.4 MB. Free memory was 176.6 MB in the beginning and 147.2 MB in the end (delta: 29.5 MB). Peak memory consumption was 29.5 MB. Max. memory is 7.1 GB. [2020-10-13 05:30:55,779 INFO L168 Benchmark]: TraceAbstraction took 16754.11 ms. Allocated memory was 203.4 MB in the beginning and 483.4 MB in the end (delta: 280.0 MB). Free memory was 146.5 MB in the beginning and 136.5 MB in the end (delta: 10.0 MB). Peak memory consumption was 290.0 MB. Max. memory is 7.1 GB. [2020-10-13 05:30:55,783 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 559.47 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 103.0 MB in the beginning and 179.5 MB in the end (delta: -76.5 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 50.87 ms. Allocated memory is still 203.4 MB. Free memory was 179.5 MB in the beginning and 176.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 677.30 ms. Allocated memory is still 203.4 MB. Free memory was 176.6 MB in the beginning and 147.2 MB in the end (delta: 29.5 MB). Peak memory consumption was 29.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 16754.11 ms. Allocated memory was 203.4 MB in the beginning and 483.4 MB in the end (delta: 280.0 MB). Free memory was 146.5 MB in the beginning and 136.5 MB in the end (delta: 10.0 MB). Peak memory consumption was 290.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 7]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 100, overapproximation of bitwiseAnd at line 98. Possible FailurePath: [L216] unsigned int a ; [L217] unsigned int ma = __VERIFIER_nondet_uint(); [L218] signed char ea = __VERIFIER_nondet_char(); [L219] unsigned int b ; [L220] unsigned int mb = __VERIFIER_nondet_uint(); [L221] signed char eb = __VERIFIER_nondet_char(); [L222] unsigned int r_add ; [L223] unsigned int zero ; [L224] int sa ; [L225] int sb ; [L226] int tmp ; [L227] int tmp___0 ; [L228] int tmp___1 ; [L229] int tmp___2 ; [L230] int tmp___3 ; [L231] int tmp___4 ; [L232] int tmp___5 ; [L233] int tmp___6 ; [L234] int tmp___7 ; [L235] int tmp___8 ; [L236] int tmp___9 ; [L237] int __retres23 ; [L241] CALL, EXPR base2flt(0, 0) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND TRUE ! m [L20] __retres4 = 0U [L70] return (__retres4); [L241] RET, EXPR base2flt(0, 0) [L241] zero = base2flt(0, 0) [L242] CALL, EXPR base2flt(ma, ea) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND TRUE m >= 1U << 25U [L54] COND TRUE e >= 127 [L55] __retres4 = 4294967295U [L70] return (__retres4); [L242] RET, EXPR base2flt(ma, ea) [L242] a = base2flt(ma, ea) [L243] CALL, EXPR base2flt(mb, eb) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND FALSE !(m >= 1U << 25U) [L66] m = m & ~ (1U << 24U) [L67] res = m | ((unsigned int )(e + 128) << 24U) [L68] __retres4 = res [L70] return (__retres4); [L243] RET, EXPR base2flt(mb, eb) [L243] b = base2flt(mb, eb) [L245] COND FALSE !(a < zero) [L248] COND TRUE a > zero [L249] tmp = 1 [L253] sa = tmp [L255] COND FALSE !(b < zero) [L258] COND TRUE b > zero [L259] tmp___0 = 1 [L263] sb = tmp___0 [L266] CALL addflt(a, b) [L74] unsigned int res ; [L75] unsigned int ma ; [L76] unsigned int mb ; [L77] unsigned int delta ; [L78] int ea ; [L79] int eb ; [L80] unsigned int tmp ; [L81] unsigned int __retres10 ; [L84] COND FALSE !(a < b) [L91] COND FALSE !(! b) [L98] ma = a & ((1U << 24U) - 1U) [L99] ea = (int )(a >> 24U) - 128 [L100] ma = ma | (1U << 24U) [L101] mb = b & ((1U << 24U) - 1U) [L102] eb = (int )(b >> 24U) - 128 [L103] mb = mb | (1U << 24U) [L104] CALL __VERIFIER_assert(ea >= eb) [L6] COND TRUE !(cond) [L7] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 93 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 16.6s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1092 SDtfs, 483 SDslu, 6226 SDs, 0 SdLazy, 1236 SolverSat, 45 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, 13.7s InterpolantComputationTime, 388 NumberOfCodeBlocks, 388 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 332 ConstructedInterpolants, 0 QuantifiedInterpolants, 31132 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...