/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/loops/lu.cmp.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 11:08:15,493 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 11:08:15,496 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 11:08:15,527 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 11:08:15,528 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 11:08:15,529 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 11:08:15,530 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 11:08:15,532 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 11:08:15,533 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 11:08:15,534 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 11:08:15,535 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 11:08:15,536 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 11:08:15,537 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 11:08:15,537 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 11:08:15,538 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 11:08:15,540 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 11:08:15,540 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 11:08:15,541 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 11:08:15,543 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 11:08:15,544 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 11:08:15,546 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 11:08:15,547 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 11:08:15,548 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 11:08:15,548 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 11:08:15,551 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 11:08:15,551 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 11:08:15,551 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 11:08:15,552 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 11:08:15,553 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 11:08:15,553 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 11:08:15,554 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 11:08:15,554 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 11:08:15,555 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 11:08:15,556 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 11:08:15,556 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 11:08:15,557 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 11:08:15,557 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 11:08:15,557 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 11:08:15,558 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 11:08:15,559 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 11:08:15,559 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 11:08:15,560 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 11:08:15,584 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 11:08:15,584 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 11:08:15,587 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 11:08:15,588 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 11:08:15,588 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 11:08:15,588 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 11:08:15,588 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 11:08:15,589 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 11:08:15,589 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 11:08:15,589 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 11:08:15,589 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 11:08:15,589 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 11:08:15,589 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 11:08:15,590 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 11:08:15,590 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 11:08:15,593 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 11:08:15,593 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 11:08:15,594 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 11:08:15,594 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 11:08:15,596 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 11:08:15,596 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 11:08:15,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 11:08:15,597 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 11:08:15,597 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 11:08:15,597 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 11:08:15,597 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 11:08:15,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 11:08:15,598 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 11:08:15,598 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 11:08:15,598 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 11:08:15,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 11:08:15,942 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 11:08:15,946 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 11:08:15,948 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 11:08:15,949 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 11:08:15,950 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/lu.cmp.c [2020-10-13 11:08:16,012 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bd4008a54/62c091d69b034f1da24f5a6fa60a1a69/FLAG5bf5daaf2 [2020-10-13 11:08:16,486 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 11:08:16,487 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/lu.cmp.c [2020-10-13 11:08:16,496 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bd4008a54/62c091d69b034f1da24f5a6fa60a1a69/FLAG5bf5daaf2 [2020-10-13 11:08:16,844 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bd4008a54/62c091d69b034f1da24f5a6fa60a1a69 [2020-10-13 11:08:16,852 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 11:08:16,854 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 11:08:16,855 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 11:08:16,855 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 11:08:16,859 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 11:08:16,860 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:08:16" (1/1) ... [2020-10-13 11:08:16,862 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5badac6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:08:16, skipping insertion in model container [2020-10-13 11:08:16,863 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:08:16" (1/1) ... [2020-10-13 11:08:16,871 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 11:08:16,899 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 11:08:17,117 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 11:08:17,134 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 11:08:17,291 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 11:08:17,313 INFO L208 MainTranslator]: Completed translation [2020-10-13 11:08:17,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:08:17 WrapperNode [2020-10-13 11:08:17,314 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 11:08:17,314 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 11:08:17,315 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 11:08:17,315 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 11:08:17,329 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:08:17" (1/1) ... [2020-10-13 11:08:17,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:08:17" (1/1) ... [2020-10-13 11:08:17,344 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:08:17" (1/1) ... [2020-10-13 11:08:17,345 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:08:17" (1/1) ... [2020-10-13 11:08:17,364 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:08:17" (1/1) ... [2020-10-13 11:08:17,374 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:08:17" (1/1) ... [2020-10-13 11:08:17,378 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:08:17" (1/1) ... [2020-10-13 11:08:17,382 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 11:08:17,383 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 11:08:17,383 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 11:08:17,383 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 11:08:17,384 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:08:17" (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 11:08:17,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 11:08:17,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 11:08:17,456 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-13 11:08:17,456 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs [2020-10-13 11:08:17,456 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 11:08:17,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ludcmp [2020-10-13 11:08:17,457 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 11:08:17,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 11:08:17,458 INFO L130 BoogieDeclarations]: Found specification of procedure ludcmp [2020-10-13 11:08:17,458 INFO L130 BoogieDeclarations]: Found specification of procedure fabs [2020-10-13 11:08:17,458 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 11:08:17,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-13 11:08:17,458 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-13 11:08:17,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 11:08:17,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 11:08:17,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 11:08:17,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 11:08:17,920 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 11:08:17,921 INFO L295 CfgBuilder]: Removed 11 assume(true) statements. [2020-10-13 11:08:17,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:08:17 BoogieIcfgContainer [2020-10-13 11:08:17,925 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 11:08:17,926 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 11:08:17,927 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 11:08:17,930 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 11:08:17,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:08:16" (1/3) ... [2020-10-13 11:08:17,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@627ed7af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:08:17, skipping insertion in model container [2020-10-13 11:08:17,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:08:17" (2/3) ... [2020-10-13 11:08:17,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@627ed7af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:08:17, skipping insertion in model container [2020-10-13 11:08:17,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:08:17" (3/3) ... [2020-10-13 11:08:17,934 INFO L109 eAbstractionObserver]: Analyzing ICFG lu.cmp.c [2020-10-13 11:08:17,948 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 11:08:17,956 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 11:08:17,973 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 11:08:18,002 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 11:08:18,003 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 11:08:18,003 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 11:08:18,003 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 11:08:18,004 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 11:08:18,004 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 11:08:18,004 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 11:08:18,004 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 11:08:18,025 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states. [2020-10-13 11:08:18,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-13 11:08:18,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:08:18,033 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:08:18,034 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:08:18,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:08:18,041 INFO L82 PathProgramCache]: Analyzing trace with hash 406725423, now seen corresponding path program 1 times [2020-10-13 11:08:18,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:08:18,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227637888] [2020-10-13 11:08:18,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:08:18,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:08:18,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:18,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:18,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:08:18,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 11:08:18,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 11:08:18,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-10-13 11:08:18,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:08:18,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:08:18,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 11:08:18,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:08:18,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 11:08:18,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:08:18,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:08:18,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:18,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:08:18,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:08:18,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:08:18,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 11:08:18,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:08:18,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:08:18,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:08:18,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:08:18,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:08:18,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:08:18,620 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1227637888] [2020-10-13 11:08:18,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:08:18,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 11:08:18,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229572719] [2020-10-13 11:08:18,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 11:08:18,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:08:18,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 11:08:18,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 11:08:18,646 INFO L87 Difference]: Start difference. First operand 64 states. Second operand 3 states. [2020-10-13 11:08:18,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:08:18,897 INFO L93 Difference]: Finished difference Result 127 states and 191 transitions. [2020-10-13 11:08:18,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 11:08:18,899 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-13 11:08:18,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:08:18,908 INFO L225 Difference]: With dead ends: 127 [2020-10-13 11:08:18,909 INFO L226 Difference]: Without dead ends: 24 [2020-10-13 11:08:18,913 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 11:08:18,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-13 11:08:18,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2020-10-13 11:08:18,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-13 11:08:18,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2020-10-13 11:08:18,958 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 12 [2020-10-13 11:08:18,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:08:18,959 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-10-13 11:08:18,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 11:08:18,959 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2020-10-13 11:08:18,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-13 11:08:18,960 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:08:18,960 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:08:18,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 11:08:18,961 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:08:18,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:08:18,962 INFO L82 PathProgramCache]: Analyzing trace with hash 394719650, now seen corresponding path program 1 times [2020-10-13 11:08:18,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:08:18,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1377802714] [2020-10-13 11:08:18,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:08:18,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:08:19,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:19,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:19,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:19,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:08:19,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 11:08:19,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 11:08:19,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-13 11:08:19,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:08:19,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 11:08:19,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 11:08:19,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 11:08:19,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:08:19,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:08:19,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:08:19,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:19,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:08:19,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:08:19,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:08:19,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 11:08:19,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:08:19,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:08:19,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:08:19,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:08:19,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:08:19,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:08:19,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1377802714] [2020-10-13 11:08:19,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:08:19,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 11:08:19,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643300728] [2020-10-13 11:08:19,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 11:08:19,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:08:19,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 11:08:19,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 11:08:19,334 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 5 states. [2020-10-13 11:08:19,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:08:19,489 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2020-10-13 11:08:19,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 11:08:19,490 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-13 11:08:19,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:08:19,491 INFO L225 Difference]: With dead ends: 40 [2020-10-13 11:08:19,491 INFO L226 Difference]: Without dead ends: 26 [2020-10-13 11:08:19,492 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 11:08:19,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-13 11:08:19,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 21. [2020-10-13 11:08:19,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-13 11:08:19,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2020-10-13 11:08:19,500 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 12 [2020-10-13 11:08:19,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:08:19,501 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2020-10-13 11:08:19,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 11:08:19,501 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2020-10-13 11:08:19,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-13 11:08:19,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:08:19,502 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:08:19,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 11:08:19,503 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:08:19,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:08:19,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1180233829, now seen corresponding path program 1 times [2020-10-13 11:08:19,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:08:19,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1297860950] [2020-10-13 11:08:19,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:08:19,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:08:19,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:19,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:19,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:19,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:19,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:08:19,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 11:08:19,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 11:08:19,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 332 [2020-10-13 11:08:19,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:08:19,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 11:08:19,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 11:08:19,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 11:08:19,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:08:19,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:08:19,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:08:19,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:19,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:08:19,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:08:19,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:08:19,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 11:08:19,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:08:19,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:08:19,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:08:19,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:08:19,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:08:19,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:08:19,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1297860950] [2020-10-13 11:08:19,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:08:19,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 11:08:19,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188879651] [2020-10-13 11:08:19,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 11:08:20,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:08:20,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 11:08:20,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 11:08:20,001 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 5 states. [2020-10-13 11:08:20,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:08:20,213 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-10-13 11:08:20,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 11:08:20,214 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-13 11:08:20,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:08:20,215 INFO L225 Difference]: With dead ends: 50 [2020-10-13 11:08:20,215 INFO L226 Difference]: Without dead ends: 35 [2020-10-13 11:08:20,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 11:08:20,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-13 11:08:20,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 24. [2020-10-13 11:08:20,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-13 11:08:20,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2020-10-13 11:08:20,224 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 16 [2020-10-13 11:08:20,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:08:20,225 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2020-10-13 11:08:20,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 11:08:20,225 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-10-13 11:08:20,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-13 11:08:20,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:08:20,226 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:08:20,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 11:08:20,226 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:08:20,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:08:20,227 INFO L82 PathProgramCache]: Analyzing trace with hash -370887203, now seen corresponding path program 1 times [2020-10-13 11:08:20,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:08:20,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [838673345] [2020-10-13 11:08:20,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:08:20,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:08:20,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:20,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:20,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:20,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:20,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:20,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:08:20,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 11:08:20,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 11:08:20,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 382 [2020-10-13 11:08:20,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:08:20,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:08:20,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 11:08:20,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 11:08:20,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:08:20,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:08:20,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:08:20,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:20,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:08:20,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:08:20,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:08:20,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 11:08:20,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:08:20,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:08:20,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:08:20,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:08:20,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:08:20,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:08:20,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [838673345] [2020-10-13 11:08:20,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 11:08:20,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 11:08:20,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867048232] [2020-10-13 11:08:20,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 11:08:20,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:08:20,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 11:08:20,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 11:08:20,766 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 6 states. [2020-10-13 11:08:20,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:08:20,970 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2020-10-13 11:08:20,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 11:08:20,971 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-13 11:08:20,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:08:20,972 INFO L225 Difference]: With dead ends: 46 [2020-10-13 11:08:20,972 INFO L226 Difference]: Without dead ends: 31 [2020-10-13 11:08:20,973 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-13 11:08:20,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-13 11:08:20,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2020-10-13 11:08:20,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-13 11:08:20,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2020-10-13 11:08:20,986 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 16 [2020-10-13 11:08:20,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:08:20,986 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2020-10-13 11:08:20,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 11:08:20,986 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-10-13 11:08:20,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-13 11:08:20,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:08:20,987 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:08:20,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 11:08:20,989 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:08:20,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:08:20,989 INFO L82 PathProgramCache]: Analyzing trace with hash -490586538, now seen corresponding path program 1 times [2020-10-13 11:08:20,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:08:20,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1053898952] [2020-10-13 11:08:20,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:08:21,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:08:21,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:21,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:21,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:21,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:21,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:21,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:08:21,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 11:08:21,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 11:08:21,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 528 [2020-10-13 11:08:21,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:08:21,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 11:08:21,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 11:08:21,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 11:08:21,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:08:21,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:08:21,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:08:21,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:21,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:08:21,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:08:21,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:08:21,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 11:08:21,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:08:21,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:08:21,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:08:21,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:08:21,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:08:21,622 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:08:21,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1053898952] [2020-10-13 11:08:21,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 11:08:21,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 11:08:21,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460257306] [2020-10-13 11:08:21,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 11:08:21,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:08:21,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 11:08:21,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 11:08:21,625 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 7 states. [2020-10-13 11:08:21,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:08:21,848 INFO L93 Difference]: Finished difference Result 67 states and 80 transitions. [2020-10-13 11:08:21,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 11:08:21,849 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-10-13 11:08:21,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:08:21,850 INFO L225 Difference]: With dead ends: 67 [2020-10-13 11:08:21,850 INFO L226 Difference]: Without dead ends: 48 [2020-10-13 11:08:21,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-13 11:08:21,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-13 11:08:21,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 39. [2020-10-13 11:08:21,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-13 11:08:21,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2020-10-13 11:08:21,859 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 20 [2020-10-13 11:08:21,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:08:21,860 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2020-10-13 11:08:21,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 11:08:21,860 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2020-10-13 11:08:21,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-13 11:08:21,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:08:21,861 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:08:21,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 11:08:21,861 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:08:21,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:08:21,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1471880625, now seen corresponding path program 2 times [2020-10-13 11:08:21,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:08:21,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1957463127] [2020-10-13 11:08:21,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:08:21,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:08:21,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:21,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:21,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:22,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:22,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:22,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:08:22,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 11:08:22,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 11:08:22,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 520 [2020-10-13 11:08:22,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:08:22,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 11:08:22,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 11:08:22,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 11:08:22,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:08:22,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:08:22,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:08:22,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:22,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:08:22,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:08:22,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:08:22,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 11:08:22,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:08:22,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:08:22,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:08:22,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:08:22,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:08:22,499 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:08:22,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1957463127] [2020-10-13 11:08:22,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 11:08:22,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 11:08:22,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4345480] [2020-10-13 11:08:22,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 11:08:22,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:08:22,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 11:08:22,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-13 11:08:22,502 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 8 states. [2020-10-13 11:08:22,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:08:22,821 INFO L93 Difference]: Finished difference Result 68 states and 81 transitions. [2020-10-13 11:08:22,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 11:08:22,822 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-10-13 11:08:22,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:08:22,824 INFO L225 Difference]: With dead ends: 68 [2020-10-13 11:08:22,825 INFO L226 Difference]: Without dead ends: 49 [2020-10-13 11:08:22,827 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-13 11:08:22,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-13 11:08:22,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2020-10-13 11:08:22,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-13 11:08:22,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2020-10-13 11:08:22,847 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 24 [2020-10-13 11:08:22,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:08:22,847 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2020-10-13 11:08:22,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 11:08:22,848 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2020-10-13 11:08:22,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-13 11:08:22,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:08:22,852 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:08:22,852 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 11:08:22,853 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:08:22,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:08:22,853 INFO L82 PathProgramCache]: Analyzing trace with hash -479010360, now seen corresponding path program 3 times [2020-10-13 11:08:22,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:08:22,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [533500334] [2020-10-13 11:08:22,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:08:22,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:08:22,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:22,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:22,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:23,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:23,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:23,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:08:23,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 11:08:23,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 11:08:23,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 654 [2020-10-13 11:08:23,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:08:23,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 11:08:23,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 11:08:23,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 11:08:23,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:08:23,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:08:23,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:08:23,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:23,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:08:23,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:08:23,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:08:23,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 11:08:23,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:08:23,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:08:23,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:08:23,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:08:23,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:08:23,634 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:08:23,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [533500334] [2020-10-13 11:08:23,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 11:08:23,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 11:08:23,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311899098] [2020-10-13 11:08:23,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 11:08:23,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:08:23,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 11:08:23,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-13 11:08:23,636 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 9 states. [2020-10-13 11:08:23,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:08:23,888 INFO L93 Difference]: Finished difference Result 124 states and 151 transitions. [2020-10-13 11:08:23,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 11:08:23,888 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-10-13 11:08:23,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:08:23,890 INFO L225 Difference]: With dead ends: 124 [2020-10-13 11:08:23,890 INFO L226 Difference]: Without dead ends: 105 [2020-10-13 11:08:23,892 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2020-10-13 11:08:23,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-13 11:08:23,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 59. [2020-10-13 11:08:23,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-13 11:08:23,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2020-10-13 11:08:23,912 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 28 [2020-10-13 11:08:23,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:08:23,912 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2020-10-13 11:08:23,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 11:08:23,913 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2020-10-13 11:08:23,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 11:08:23,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:08:23,916 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:08:23,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 11:08:23,916 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:08:23,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:08:23,917 INFO L82 PathProgramCache]: Analyzing trace with hash -801997631, now seen corresponding path program 4 times [2020-10-13 11:08:23,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:08:23,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907935327] [2020-10-13 11:08:23,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:08:23,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:08:23,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:23,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:24,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:24,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:24,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:24,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:08:24,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 11:08:24,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 11:08:24,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 678 [2020-10-13 11:08:24,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:08:24,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 11:08:24,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 11:08:24,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 11:08:24,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:08:24,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:08:24,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:08:24,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:24,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:08:24,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:08:24,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:08:24,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:08:24,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:08:24,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:08:24,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:08:24,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:08:24,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:08:24,727 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:08:24,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [907935327] [2020-10-13 11:08:24,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 11:08:24,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 11:08:24,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513345571] [2020-10-13 11:08:24,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 11:08:24,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:08:24,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 11:08:24,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-13 11:08:24,730 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand 10 states. [2020-10-13 11:08:24,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:08:24,983 INFO L93 Difference]: Finished difference Result 112 states and 136 transitions. [2020-10-13 11:08:24,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 11:08:24,984 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2020-10-13 11:08:24,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:08:24,985 INFO L225 Difference]: With dead ends: 112 [2020-10-13 11:08:24,985 INFO L226 Difference]: Without dead ends: 81 [2020-10-13 11:08:24,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2020-10-13 11:08:24,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-13 11:08:24,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 63. [2020-10-13 11:08:24,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-13 11:08:24,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 75 transitions. [2020-10-13 11:08:24,995 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 75 transitions. Word has length 32 [2020-10-13 11:08:24,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:08:24,996 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 75 transitions. [2020-10-13 11:08:24,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 11:08:24,996 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 75 transitions. [2020-10-13 11:08:24,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-13 11:08:24,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:08:24,997 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:08:24,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 11:08:24,998 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:08:24,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:08:24,998 INFO L82 PathProgramCache]: Analyzing trace with hash -850791622, now seen corresponding path program 5 times [2020-10-13 11:08:24,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:08:24,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1918100572] [2020-10-13 11:08:24,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:08:25,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:08:25,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:25,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:25,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:25,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:08:25,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 11:08:25,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 11:08:25,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 298 [2020-10-13 11:08:25,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:08:25,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 11:08:25,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 11:08:25,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 11:08:25,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:08:25,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:08:25,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:08:25,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:25,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:08:25,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:08:25,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:08:25,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:08:25,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:08:25,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:08:25,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:08:25,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:08:25,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:08:25,398 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-10-13 11:08:25,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1918100572] [2020-10-13 11:08:25,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 11:08:25,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 11:08:25,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766704172] [2020-10-13 11:08:25,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 11:08:25,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:08:25,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 11:08:25,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-13 11:08:25,401 INFO L87 Difference]: Start difference. First operand 63 states and 75 transitions. Second operand 7 states. [2020-10-13 11:08:25,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:08:25,695 INFO L93 Difference]: Finished difference Result 99 states and 116 transitions. [2020-10-13 11:08:25,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 11:08:25,696 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-10-13 11:08:25,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:08:25,697 INFO L225 Difference]: With dead ends: 99 [2020-10-13 11:08:25,697 INFO L226 Difference]: Without dead ends: 97 [2020-10-13 11:08:25,698 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-10-13 11:08:25,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-13 11:08:25,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 87. [2020-10-13 11:08:25,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-13 11:08:25,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 104 transitions. [2020-10-13 11:08:25,709 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 104 transitions. Word has length 36 [2020-10-13 11:08:25,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:08:25,709 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 104 transitions. [2020-10-13 11:08:25,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 11:08:25,709 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 104 transitions. [2020-10-13 11:08:25,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 11:08:25,711 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:08:25,712 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:08:25,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 11:08:25,712 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:08:25,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:08:25,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1081001680, now seen corresponding path program 1 times [2020-10-13 11:08:25,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:08:25,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [125388696] [2020-10-13 11:08:25,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:08:25,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:08:25,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:25,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:25,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:25,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:26,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:26,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:28,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:28,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:28,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:28,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:28,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:28,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:28,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:29,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:29,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:30,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:30,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:30,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:08:30,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 11:08:30,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 11:08:30,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 11:08:30,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:08:30,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 11:08:30,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-13 11:08:30,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 11:08:30,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:08:30,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:08:30,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:08:30,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:30,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:08:30,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:08:30,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:08:30,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 11:08:30,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:08:30,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:08:30,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:08:30,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:08:30,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:08:30,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 11:08:30,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:08:30,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:30,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:08:30,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:08:30,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:08:30,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:08:30,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:08:30,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:08:30,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:08:30,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:08:30,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:08:30,968 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 135 proven. 45 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-10-13 11:08:30,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [125388696] [2020-10-13 11:08:30,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 11:08:30,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 11:08:30,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641452401] [2020-10-13 11:08:30,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 11:08:30,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:08:30,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 11:08:30,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-13 11:08:30,972 INFO L87 Difference]: Start difference. First operand 87 states and 104 transitions. Second operand 12 states. [2020-10-13 11:08:31,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:08:31,279 INFO L93 Difference]: Finished difference Result 115 states and 138 transitions. [2020-10-13 11:08:31,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 11:08:31,279 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 65 [2020-10-13 11:08:31,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:08:31,284 INFO L225 Difference]: With dead ends: 115 [2020-10-13 11:08:31,284 INFO L226 Difference]: Without dead ends: 113 [2020-10-13 11:08:31,285 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2020-10-13 11:08:31,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-13 11:08:31,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 91. [2020-10-13 11:08:31,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-13 11:08:31,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 110 transitions. [2020-10-13 11:08:31,302 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 110 transitions. Word has length 65 [2020-10-13 11:08:31,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:08:31,303 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 110 transitions. [2020-10-13 11:08:31,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 11:08:31,303 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 110 transitions. [2020-10-13 11:08:31,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 11:08:31,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:08:31,308 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:08:31,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 11:08:31,310 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:08:31,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:08:31,311 INFO L82 PathProgramCache]: Analyzing trace with hash -752575031, now seen corresponding path program 2 times [2020-10-13 11:08:31,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:08:31,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1322272403] [2020-10-13 11:08:31,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:08:31,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:08:31,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:31,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:31,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:31,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:31,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:31,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:31,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:32,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:33,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:33,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:33,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:34,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:34,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:34,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:34,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:35,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:35,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:35,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:35,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:36,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:08:36,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 11:08:36,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-13 11:08:36,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 11:08:36,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:08:36,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 11:08:36,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-13 11:08:36,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 11:08:36,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:08:36,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:08:36,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:08:36,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:36,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:08:36,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:08:36,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:08:36,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:08:36,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:08:36,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:08:36,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:08:36,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:08:36,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:08:36,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 11:08:36,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:08:36,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:36,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:08:36,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:08:36,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:08:36,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:08:36,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:08:36,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:08:36,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:08:36,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:08:36,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:08:36,534 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 160 proven. 66 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-10-13 11:08:36,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1322272403] [2020-10-13 11:08:36,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 11:08:36,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 11:08:36,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49896138] [2020-10-13 11:08:36,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 11:08:36,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:08:36,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 11:08:36,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-13 11:08:36,537 INFO L87 Difference]: Start difference. First operand 91 states and 110 transitions. Second operand 13 states. [2020-10-13 11:08:36,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:08:36,974 INFO L93 Difference]: Finished difference Result 182 states and 220 transitions. [2020-10-13 11:08:36,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 11:08:36,975 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 69 [2020-10-13 11:08:36,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:08:36,977 INFO L225 Difference]: With dead ends: 182 [2020-10-13 11:08:36,977 INFO L226 Difference]: Without dead ends: 180 [2020-10-13 11:08:36,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=147, Invalid=405, Unknown=0, NotChecked=0, Total=552 [2020-10-13 11:08:36,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-13 11:08:36,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 95. [2020-10-13 11:08:36,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-13 11:08:36,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 116 transitions. [2020-10-13 11:08:36,990 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 116 transitions. Word has length 69 [2020-10-13 11:08:36,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:08:36,992 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 116 transitions. [2020-10-13 11:08:36,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 11:08:36,992 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 116 transitions. [2020-10-13 11:08:36,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-13 11:08:36,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:08:36,997 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:08:36,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 11:08:36,998 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:08:36,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:08:36,998 INFO L82 PathProgramCache]: Analyzing trace with hash -659271614, now seen corresponding path program 3 times [2020-10-13 11:08:36,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:08:36,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1336241174] [2020-10-13 11:08:36,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:08:37,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:08:37,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:37,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:37,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:37,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:38,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:38,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:38,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:38,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:38,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:38,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:38,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:38,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:38,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:39,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:39,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:39,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:39,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:39,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:39,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:39,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:40,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:40,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:40,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:40,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:40,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:41,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:41,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:41,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:41,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:42,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:08:42,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 11:08:42,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 29 [2020-10-13 11:08:42,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 11:08:42,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:08:42,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 11:08:42,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-13 11:08:42,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 11:08:42,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:08:42,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:08:42,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:08:42,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:42,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:08:42,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:08:42,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:08:42,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:08:42,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:08:42,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:08:42,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:08:42,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:08:42,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:08:42,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 11:08:42,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:08:42,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:42,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:08:42,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:08:42,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:08:42,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:08:42,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:08:42,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:08:42,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:08:42,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:08:42,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:08:42,208 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 185 proven. 91 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-10-13 11:08:42,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1336241174] [2020-10-13 11:08:42,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 11:08:42,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 11:08:42,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618838095] [2020-10-13 11:08:42,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 11:08:42,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:08:42,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 11:08:42,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-13 11:08:42,211 INFO L87 Difference]: Start difference. First operand 95 states and 116 transitions. Second operand 14 states. [2020-10-13 11:08:42,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:08:42,669 INFO L93 Difference]: Finished difference Result 217 states and 266 transitions. [2020-10-13 11:08:42,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 11:08:42,669 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 73 [2020-10-13 11:08:42,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:08:42,671 INFO L225 Difference]: With dead ends: 217 [2020-10-13 11:08:42,671 INFO L226 Difference]: Without dead ends: 215 [2020-10-13 11:08:42,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=176, Invalid=474, Unknown=0, NotChecked=0, Total=650 [2020-10-13 11:08:42,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-13 11:08:42,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 99. [2020-10-13 11:08:42,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-13 11:08:42,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 122 transitions. [2020-10-13 11:08:42,685 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 122 transitions. Word has length 73 [2020-10-13 11:08:42,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:08:42,686 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 122 transitions. [2020-10-13 11:08:42,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 11:08:42,689 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 122 transitions. [2020-10-13 11:08:42,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-13 11:08:42,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:08:42,690 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:08:42,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 11:08:42,691 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:08:42,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:08:42,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1371807291, now seen corresponding path program 4 times [2020-10-13 11:08:42,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:08:42,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1539066233] [2020-10-13 11:08:42,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:08:42,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:08:42,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:42,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:42,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:42,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:43,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:43,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:44,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:44,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:44,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:44,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:44,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:44,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:44,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:44,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:44,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:45,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:45,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:45,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:45,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:45,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:45,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:45,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:45,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:45,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:45,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:46,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:46,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:46,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:46,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:47,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:47,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:47,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:47,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:08:47,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 11:08:47,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 32 [2020-10-13 11:08:47,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 11:08:47,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:08:47,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 11:08:47,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-13 11:08:47,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 11:08:47,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:08:47,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:08:47,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:08:47,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:47,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:08:47,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:08:47,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:08:47,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:08:47,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:08:47,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:08:47,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:08:47,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:08:47,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:08:47,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 11:08:47,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:08:47,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:47,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:08:47,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:08:47,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:08:47,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:08:47,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:08:47,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:08:47,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:08:47,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:08:47,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:08:47,948 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 210 proven. 120 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-10-13 11:08:47,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1539066233] [2020-10-13 11:08:47,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 11:08:47,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 11:08:47,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791395321] [2020-10-13 11:08:47,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 11:08:47,955 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:08:47,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 11:08:47,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-13 11:08:47,956 INFO L87 Difference]: Start difference. First operand 99 states and 122 transitions. Second operand 15 states. [2020-10-13 11:08:48,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:08:48,513 INFO L93 Difference]: Finished difference Result 252 states and 312 transitions. [2020-10-13 11:08:48,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-13 11:08:48,514 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 77 [2020-10-13 11:08:48,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:08:48,516 INFO L225 Difference]: With dead ends: 252 [2020-10-13 11:08:48,516 INFO L226 Difference]: Without dead ends: 250 [2020-10-13 11:08:48,517 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=208, Invalid=548, Unknown=0, NotChecked=0, Total=756 [2020-10-13 11:08:48,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-10-13 11:08:48,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 103. [2020-10-13 11:08:48,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-13 11:08:48,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 128 transitions. [2020-10-13 11:08:48,535 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 128 transitions. Word has length 77 [2020-10-13 11:08:48,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:08:48,536 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 128 transitions. [2020-10-13 11:08:48,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 11:08:48,536 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 128 transitions. [2020-10-13 11:08:48,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-13 11:08:48,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:08:48,537 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:08:48,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 11:08:48,537 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:08:48,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:08:48,538 INFO L82 PathProgramCache]: Analyzing trace with hash 31082420, now seen corresponding path program 5 times [2020-10-13 11:08:48,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:08:48,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [787610580] [2020-10-13 11:08:48,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:08:48,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:08:48,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:48,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:48,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:48,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:48,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:48,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:48,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:49,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:49,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:49,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:50,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:51,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:52,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:52,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:52,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:52,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:52,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:52,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:52,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:52,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:52,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:52,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:53,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:53,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:53,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:53,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:53,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:53,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:53,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:08:53,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 11:08:53,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 28 [2020-10-13 11:08:53,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 11:08:53,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:08:53,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 11:08:53,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 11:08:53,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 11:08:53,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:08:53,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:08:53,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:08:53,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:53,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:08:53,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:08:53,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:08:53,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 11:08:53,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:08:53,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:08:53,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:08:53,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:08:53,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:08:53,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 11:08:53,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:08:53,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:53,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:08:53,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:08:53,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:08:53,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:08:53,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:08:53,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:08:53,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:08:53,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:08:53,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:08:53,711 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 244 proven. 51 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2020-10-13 11:08:53,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [787610580] [2020-10-13 11:08:53,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 11:08:53,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 11:08:53,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594649010] [2020-10-13 11:08:53,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 11:08:53,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:08:53,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 11:08:53,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-13 11:08:53,714 INFO L87 Difference]: Start difference. First operand 103 states and 128 transitions. Second operand 8 states. [2020-10-13 11:08:54,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:08:54,113 INFO L93 Difference]: Finished difference Result 257 states and 318 transitions. [2020-10-13 11:08:54,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 11:08:54,113 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 81 [2020-10-13 11:08:54,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:08:54,115 INFO L225 Difference]: With dead ends: 257 [2020-10-13 11:08:54,115 INFO L226 Difference]: Without dead ends: 186 [2020-10-13 11:08:54,119 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-10-13 11:08:54,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-13 11:08:54,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 113. [2020-10-13 11:08:54,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-13 11:08:54,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 139 transitions. [2020-10-13 11:08:54,137 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 139 transitions. Word has length 81 [2020-10-13 11:08:54,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:08:54,138 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 139 transitions. [2020-10-13 11:08:54,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 11:08:54,138 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 139 transitions. [2020-10-13 11:08:54,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-13 11:08:54,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:08:54,149 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 13, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:08:54,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 11:08:54,150 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:08:54,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:08:54,150 INFO L82 PathProgramCache]: Analyzing trace with hash 425449206, now seen corresponding path program 6 times [2020-10-13 11:08:54,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:08:54,151 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1108203629] [2020-10-13 11:08:54,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:08:54,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:08:54,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:54,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:54,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:54,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:54,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:54,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:54,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:54,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:55,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:55,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:55,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:55,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:55,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:55,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:55,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:55,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:57,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:57,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:57,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:57,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:57,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:57,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:57,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:58,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:58,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:58,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:58,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:59,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:59,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:59,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:59,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:08:59,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 11:08:59,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 30 [2020-10-13 11:08:59,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 11:08:59,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:08:59,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 11:08:59,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 11:08:59,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 11:08:59,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:08:59,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:08:59,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:08:59,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:59,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:08:59,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:08:59,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:08:59,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:08:59,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:08:59,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:08:59,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:08:59,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:08:59,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:08:59,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 11:08:59,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:08:59,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:08:59,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:08:59,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:08:59,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:08:59,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:08:59,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:08:59,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:08:59,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:08:59,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:08:59,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:08:59,397 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 220 proven. 223 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-13 11:08:59,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1108203629] [2020-10-13 11:08:59,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 11:08:59,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 11:08:59,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685512087] [2020-10-13 11:08:59,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 11:08:59,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:08:59,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 11:08:59,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-10-13 11:08:59,400 INFO L87 Difference]: Start difference. First operand 113 states and 139 transitions. Second operand 18 states. [2020-10-13 11:08:59,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:08:59,953 INFO L93 Difference]: Finished difference Result 311 states and 382 transitions. [2020-10-13 11:08:59,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 11:08:59,953 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 81 [2020-10-13 11:08:59,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:08:59,954 INFO L225 Difference]: With dead ends: 311 [2020-10-13 11:08:59,954 INFO L226 Difference]: Without dead ends: 0 [2020-10-13 11:08:59,957 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=254, Invalid=802, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 11:08:59,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-13 11:08:59,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-13 11:08:59,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-13 11:08:59,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-13 11:08:59,958 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 81 [2020-10-13 11:08:59,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:08:59,958 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-13 11:08:59,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 11:08:59,958 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-13 11:08:59,958 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-13 11:08:59,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 11:08:59,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-13 11:09:00,774 WARN L193 SmtUtils]: Spent 644.00 ms on a formula simplification. DAG size of input: 323 DAG size of output: 257 [2020-10-13 11:09:01,126 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 14 [2020-10-13 11:09:01,902 WARN L193 SmtUtils]: Spent 770.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 52 [2020-10-13 11:09:01,959 INFO L271 CegarLoopResult]: At program point L118(line 118) the Hoare annotation is: true [2020-10-13 11:09:01,959 INFO L268 CegarLoopResult]: For program point L118-1(line 118) no Hoare annotation was computed. [2020-10-13 11:09:01,959 INFO L268 CegarLoopResult]: For program point L127-2(lines 127 133) no Hoare annotation was computed. [2020-10-13 11:09:01,959 INFO L271 CegarLoopResult]: At program point L127-3(lines 127 133) the Hoare annotation is: true [2020-10-13 11:09:01,959 INFO L268 CegarLoopResult]: For program point L119-2(lines 119 126) no Hoare annotation was computed. [2020-10-13 11:09:01,959 INFO L271 CegarLoopResult]: At program point L119-3(lines 119 126) the Hoare annotation is: true [2020-10-13 11:09:01,960 INFO L268 CegarLoopResult]: For program point L119-4(lines 119 126) no Hoare annotation was computed. [2020-10-13 11:09:01,960 INFO L268 CegarLoopResult]: For program point L144-2(lines 144 150) no Hoare annotation was computed. [2020-10-13 11:09:01,960 INFO L271 CegarLoopResult]: At program point L144-3(lines 144 150) the Hoare annotation is: true [2020-10-13 11:09:01,960 INFO L268 CegarLoopResult]: For program point L144-4(lines 144 150) no Hoare annotation was computed. [2020-10-13 11:09:01,960 INFO L268 CegarLoopResult]: For program point L136-2(lines 136 142) no Hoare annotation was computed. [2020-10-13 11:09:01,960 INFO L271 CegarLoopResult]: At program point L136-3(lines 136 142) the Hoare annotation is: true [2020-10-13 11:09:01,960 INFO L268 CegarLoopResult]: For program point L136-4(lines 136 142) no Hoare annotation was computed. [2020-10-13 11:09:01,960 INFO L268 CegarLoopResult]: For program point ludcmpEXIT(lines 109 153) no Hoare annotation was computed. [2020-10-13 11:09:01,960 INFO L264 CegarLoopResult]: At program point ludcmpENTRY(lines 109 153) the Hoare annotation is: (and (= |old(#memory_real)| |#memory_real|) (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2020-10-13 11:09:01,961 INFO L268 CegarLoopResult]: For program point ludcmpFINAL(lines 109 153) no Hoare annotation was computed. [2020-10-13 11:09:01,961 INFO L268 CegarLoopResult]: For program point L130-2(lines 130 131) no Hoare annotation was computed. [2020-10-13 11:09:01,961 INFO L271 CegarLoopResult]: At program point L130-3(lines 130 131) the Hoare annotation is: true [2020-10-13 11:09:01,961 INFO L268 CegarLoopResult]: For program point L130-4(lines 130 131) no Hoare annotation was computed. [2020-10-13 11:09:01,961 INFO L268 CegarLoopResult]: For program point L122(lines 122 124) no Hoare annotation was computed. [2020-10-13 11:09:01,961 INFO L268 CegarLoopResult]: For program point L122-1(lines 122 124) no Hoare annotation was computed. [2020-10-13 11:09:01,962 INFO L268 CegarLoopResult]: For program point L147-2(lines 147 148) no Hoare annotation was computed. [2020-10-13 11:09:01,962 INFO L271 CegarLoopResult]: At program point L147-3(lines 147 148) the Hoare annotation is: true [2020-10-13 11:09:01,962 INFO L268 CegarLoopResult]: For program point L147-4(lines 147 148) no Hoare annotation was computed. [2020-10-13 11:09:01,962 INFO L268 CegarLoopResult]: For program point L139-2(lines 139 140) no Hoare annotation was computed. [2020-10-13 11:09:01,962 INFO L271 CegarLoopResult]: At program point L139-3(lines 139 140) the Hoare annotation is: true [2020-10-13 11:09:01,962 INFO L268 CegarLoopResult]: For program point L139-4(lines 139 140) no Hoare annotation was computed. [2020-10-13 11:09:01,962 INFO L268 CegarLoopResult]: For program point L123-2(lines 123 124) no Hoare annotation was computed. [2020-10-13 11:09:01,963 INFO L271 CegarLoopResult]: At program point L123-3(lines 123 124) the Hoare annotation is: true [2020-10-13 11:09:01,963 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-10-13 11:09:01,963 INFO L268 CegarLoopResult]: For program point L116-2(lines 116 134) no Hoare annotation was computed. [2020-10-13 11:09:01,963 INFO L271 CegarLoopResult]: At program point L116-3(lines 116 134) the Hoare annotation is: true [2020-10-13 11:09:01,963 INFO L268 CegarLoopResult]: For program point L116-4(lines 116 134) no Hoare annotation was computed. [2020-10-13 11:09:01,963 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-13 11:09:01,963 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |~#x~0.offset| |old(~#x~0.offset)|) (= |old(#memory_real)| |#memory_real|) (= |~#b~0.offset| |old(~#b~0.offset)|) (= |old(#length)| |#length|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= |~#b~0.base| |old(~#b~0.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |~#x~0.base| |old(~#x~0.base)|) (= |~#a~0.base| |old(~#a~0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-13 11:09:01,963 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-13 11:09:01,963 INFO L268 CegarLoopResult]: For program point L78(lines 78 79) no Hoare annotation was computed. [2020-10-13 11:09:01,964 INFO L268 CegarLoopResult]: For program point L78-2(lines 78 79) no Hoare annotation was computed. [2020-10-13 11:09:01,964 INFO L268 CegarLoopResult]: For program point fabsEXIT(lines 74 81) no Hoare annotation was computed. [2020-10-13 11:09:01,964 INFO L271 CegarLoopResult]: At program point fabsENTRY(lines 74 81) the Hoare annotation is: true [2020-10-13 11:09:01,964 INFO L268 CegarLoopResult]: For program point fabsFINAL(lines 74 81) no Hoare annotation was computed. [2020-10-13 11:09:01,964 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-13 11:09:01,964 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-13 11:09:01,964 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-13 11:09:01,964 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-13 11:09:01,964 INFO L268 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2020-10-13 11:09:01,965 INFO L268 CegarLoopResult]: For program point L97-2(line 97) no Hoare annotation was computed. [2020-10-13 11:09:01,965 INFO L268 CegarLoopResult]: For program point L91-2(lines 91 102) no Hoare annotation was computed. [2020-10-13 11:09:01,965 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 83 107) no Hoare annotation was computed. [2020-10-13 11:09:01,965 INFO L264 CegarLoopResult]: At program point L91-3(lines 91 102) the Hoare annotation is: (or (and (<= main_~j~0 6) (<= (+ main_~n~0 1) main_~j~0) (<= 5 main_~n~0)) (and (= |old(#memory_real)| |#memory_real|) (= |old(#length)| |#length|) (<= (+ main_~i~0 5) main_~n~0) (<= 0 main_~i~0) (<= main_~n~0 5) (= |old(#valid)| |#valid|))) [2020-10-13 11:09:01,965 INFO L271 CegarLoopResult]: At program point L91-4(lines 91 102) the Hoare annotation is: true [2020-10-13 11:09:01,965 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 83 107) no Hoare annotation was computed. [2020-10-13 11:09:01,965 INFO L268 CegarLoopResult]: For program point L104(line 104) no Hoare annotation was computed. [2020-10-13 11:09:01,965 INFO L268 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-10-13 11:09:01,966 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 83 107) the Hoare annotation is: (and (= |old(#memory_real)| |#memory_real|) (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2020-10-13 11:09:01,966 INFO L268 CegarLoopResult]: For program point L94-2(lines 94 99) no Hoare annotation was computed. [2020-10-13 11:09:01,966 INFO L264 CegarLoopResult]: At program point L94-3(lines 94 99) the Hoare annotation is: (let ((.cse2 (+ main_~n~0 1)) (.cse0 (+ main_~i~0 main_~j~0)) (.cse1 (<= 5 main_~n~0))) (or (and (<= main_~j~0 2) (<= .cse0 (+ main_~n~0 2)) (<= main_~n~0 (+ main_~j~0 3)) .cse1) (and (<= .cse0 (+ main_~n~0 4)) (<= main_~j~0 4) (<= main_~n~0 (+ main_~j~0 1)) .cse1) (and (<= main_~n~0 (+ main_~j~0 5)) (<= main_~j~0 0) (<= .cse0 main_~n~0) .cse1) (and (<= .cse0 (+ main_~n~0 3)) (<= main_~j~0 3) .cse1 (<= main_~n~0 (+ main_~j~0 2))) (and (<= main_~n~0 (+ main_~j~0 4)) (<= main_~j~0 1) (<= .cse0 .cse2) .cse1) (and (<= main_~j~0 6) (<= .cse2 main_~j~0) (<= .cse0 (+ main_~n~0 6)) .cse1) (and (<= main_~n~0 main_~j~0) (<= main_~j~0 5) (<= .cse0 (+ main_~n~0 5)) .cse1))) [2020-10-13 11:09:01,966 INFO L264 CegarLoopResult]: At program point L94-4(lines 94 99) the Hoare annotation is: (and (<= main_~j~0 6) (<= (+ main_~n~0 1) main_~j~0) (< main_~i~0 50) (<= 5 main_~n~0)) [2020-10-13 11:09:01,966 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-10-13 11:09:01,966 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-10-13 11:09:01,967 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-10-13 11:09:01,967 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-10-13 11:09:01,967 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-10-13 11:09:01,967 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-10-13 11:09:01,987 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_real [2020-10-13 11:09:01,989 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_real [2020-10-13 11:09:01,989 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-10-13 11:09:01,989 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-10-13 11:09:01,990 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_real [2020-10-13 11:09:01,990 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_real [2020-10-13 11:09:01,990 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-10-13 11:09:01,991 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-10-13 11:09:01,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 11:09:01 BoogieIcfgContainer [2020-10-13 11:09:01,993 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 11:09:01,995 INFO L168 Benchmark]: Toolchain (without parser) took 45141.38 ms. Allocated memory was 141.0 MB in the beginning and 738.7 MB in the end (delta: 597.7 MB). Free memory was 104.2 MB in the beginning and 534.5 MB in the end (delta: -430.4 MB). Peak memory consumption was 597.9 MB. Max. memory is 7.1 GB. [2020-10-13 11:09:01,996 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-10-13 11:09:01,996 INFO L168 Benchmark]: CACSL2BoogieTranslator took 459.15 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 103.7 MB in the beginning and 180.7 MB in the end (delta: -76.9 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-10-13 11:09:01,997 INFO L168 Benchmark]: Boogie Preprocessor took 68.36 ms. Allocated memory is still 203.9 MB. Free memory was 180.7 MB in the beginning and 178.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-10-13 11:09:01,998 INFO L168 Benchmark]: RCFGBuilder took 542.22 ms. Allocated memory is still 203.9 MB. Free memory was 178.1 MB in the beginning and 150.0 MB in the end (delta: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. [2020-10-13 11:09:01,998 INFO L168 Benchmark]: TraceAbstraction took 44066.60 ms. Allocated memory was 203.9 MB in the beginning and 738.7 MB in the end (delta: 534.8 MB). Free memory was 149.3 MB in the beginning and 534.5 MB in the end (delta: -385.2 MB). Peak memory consumption was 580.2 MB. Max. memory is 7.1 GB. [2020-10-13 11:09:02,001 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 459.15 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 103.7 MB in the beginning and 180.7 MB in the end (delta: -76.9 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 68.36 ms. Allocated memory is still 203.9 MB. Free memory was 180.7 MB in the beginning and 178.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 542.22 ms. Allocated memory is still 203.9 MB. Free memory was 178.1 MB in the beginning and 150.0 MB in the end (delta: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 44066.60 ms. Allocated memory was 203.9 MB in the beginning and 738.7 MB in the end (delta: 534.8 MB). Free memory was 149.3 MB in the beginning and 534.5 MB in the end (delta: -385.2 MB). Peak memory consumption was 580.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_real - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_real - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_real - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_real - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 116]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 94]: Loop Invariant Derived loop invariant: ((((((((j <= 2 && i + j <= n + 2) && n <= j + 3) && 5 <= n) || (((i + j <= n + 4 && j <= 4) && n <= j + 1) && 5 <= n)) || (((n <= j + 5 && j <= 0) && i + j <= n) && 5 <= n)) || (((i + j <= n + 3 && j <= 3) && 5 <= n) && n <= j + 2)) || (((n <= j + 4 && j <= 1) && i + j <= n + 1) && 5 <= n)) || (((j <= 6 && n + 1 <= j) && i + j <= n + 6) && 5 <= n)) || (((n <= j && j <= 5) && i + j <= n + 5) && 5 <= n) - InvariantResult [Line: 127]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 144]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 123]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 139]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 91]: Loop Invariant [2020-10-13 11:09:02,010 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_real [2020-10-13 11:09:02,011 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_real [2020-10-13 11:09:02,011 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-10-13 11:09:02,011 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-10-13 11:09:02,011 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_real [2020-10-13 11:09:02,011 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_real [2020-10-13 11:09:02,012 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-10-13 11:09:02,012 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length Derived loop invariant: ((j <= 6 && n + 1 <= j) && 5 <= n) || (((((\old(unknown-#memory_real-unknown) == unknown-#memory_real-unknown && \old(unknown-#length-unknown) == unknown-#length-unknown) && i + 5 <= n) && 0 <= i) && n <= 5) && \old(\valid) == \valid) - InvariantResult [Line: 119]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 130]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 136]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 147]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 64 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 41.9s, OverallIterations: 15, TraceHistogramMax: 15, AutomataDifference: 4.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 286 SDtfs, 773 SDslu, 750 SDs, 0 SdLazy, 2068 SolverSat, 205 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 266 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=113occurred in iteration=14, 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, 15 MinimizatonAttempts, 555 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 21 LocationsWithAnnotation, 60 PreInvPairs, 141 NumberOfFragments, 248 HoareAnnotationTreeSize, 60 FomulaSimplifications, 1030312 FormulaSimplificationTreeSizeReduction, 0.8s HoareSimplificationTime, 21 FomulaSimplificationsInter, 167903 FormulaSimplificationTreeSizeReductionInter, 1.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 36.1s InterpolantComputationTime, 642 NumberOfCodeBlocks, 642 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 627 ConstructedInterpolants, 0 QuantifiedInterpolants, 148212 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 3 PerfectInterpolantSequences, 1650/2352 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 proved your program to be correct! Received shutdown request...