/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=BIGGEST --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/ludcmp.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 16:23:24,940 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 16:23:24,943 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 16:23:24,985 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 16:23:24,985 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 16:23:24,997 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 16:23:24,999 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 16:23:25,002 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 16:23:25,005 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 16:23:25,007 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 16:23:25,008 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 16:23:25,009 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 16:23:25,011 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 16:23:25,014 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 16:23:25,016 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 16:23:25,017 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 16:23:25,019 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 16:23:25,021 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 16:23:25,022 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 16:23:25,029 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 16:23:25,031 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 16:23:25,033 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 16:23:25,034 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 16:23:25,035 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 16:23:25,040 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 16:23:25,040 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 16:23:25,040 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 16:23:25,043 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 16:23:25,044 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 16:23:25,046 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 16:23:25,046 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 16:23:25,047 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 16:23:25,047 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 16:23:25,048 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 16:23:25,049 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 16:23:25,049 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 16:23:25,050 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 16:23:25,051 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 16:23:25,051 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 16:23:25,052 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 16:23:25,053 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 16:23:25,054 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 [2020-10-12 16:23:25,094 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 16:23:25,094 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 16:23:25,096 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 16:23:25,096 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 16:23:25,096 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 16:23:25,097 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 16:23:25,097 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 16:23:25,097 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 16:23:25,097 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 16:23:25,098 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 16:23:25,099 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 16:23:25,099 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 16:23:25,099 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 16:23:25,100 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 16:23:25,100 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 16:23:25,100 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 16:23:25,100 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 16:23:25,100 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 16:23:25,101 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 16:23:25,101 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 16:23:25,101 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 16:23:25,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 16:23:25,101 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 16:23:25,102 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 16:23:25,102 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 16:23:25,102 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 16:23:25,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 16:23:25,102 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 16:23:25,102 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 16:23:25,103 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 16:23:25,404 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 16:23:25,416 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 16:23:25,420 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 16:23:25,421 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 16:23:25,422 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 16:23:25,422 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/ludcmp.c [2020-10-12 16:23:25,482 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f495bdffe/a6a2621dcf18447da8b3870521b6c520/FLAG560c903a0 [2020-10-12 16:23:25,932 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 16:23:25,933 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/ludcmp.c [2020-10-12 16:23:25,940 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f495bdffe/a6a2621dcf18447da8b3870521b6c520/FLAG560c903a0 [2020-10-12 16:23:26,272 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f495bdffe/a6a2621dcf18447da8b3870521b6c520 [2020-10-12 16:23:26,282 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 16:23:26,284 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 16:23:26,285 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 16:23:26,286 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 16:23:26,291 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 16:23:26,292 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:23:26" (1/1) ... [2020-10-12 16:23:26,296 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ff28928 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:23:26, skipping insertion in model container [2020-10-12 16:23:26,297 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:23:26" (1/1) ... [2020-10-12 16:23:26,306 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 16:23:26,340 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 16:23:26,582 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 16:23:26,597 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 16:23:26,728 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 16:23:26,750 INFO L208 MainTranslator]: Completed translation [2020-10-12 16:23:26,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:23:26 WrapperNode [2020-10-12 16:23:26,751 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 16:23:26,752 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 16:23:26,752 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 16:23:26,752 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 16:23:26,763 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:23:26" (1/1) ... [2020-10-12 16:23:26,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:23:26" (1/1) ... [2020-10-12 16:23:26,774 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:23:26" (1/1) ... [2020-10-12 16:23:26,774 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:23:26" (1/1) ... [2020-10-12 16:23:26,790 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:23:26" (1/1) ... [2020-10-12 16:23:26,799 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:23:26" (1/1) ... [2020-10-12 16:23:26,801 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:23:26" (1/1) ... [2020-10-12 16:23:26,806 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 16:23:26,806 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 16:23:26,806 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 16:23:26,806 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 16:23:26,807 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:23:26" (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 [2020-10-12 16:23:26,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 16:23:26,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 16:23:26,865 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-12 16:23:26,865 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs [2020-10-12 16:23:26,865 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 16:23:26,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ludcmp [2020-10-12 16:23:26,865 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 16:23:26,865 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-12 16:23:26,865 INFO L130 BoogieDeclarations]: Found specification of procedure ludcmp [2020-10-12 16:23:26,866 INFO L130 BoogieDeclarations]: Found specification of procedure fabs [2020-10-12 16:23:26,866 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 16:23:26,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-12 16:23:26,866 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-12 16:23:26,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 16:23:26,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 16:23:26,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 16:23:26,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 16:23:27,348 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 16:23:27,349 INFO L295 CfgBuilder]: Removed 11 assume(true) statements. [2020-10-12 16:23:27,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:23:27 BoogieIcfgContainer [2020-10-12 16:23:27,353 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 16:23:27,355 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 16:23:27,355 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 16:23:27,358 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 16:23:27,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 04:23:26" (1/3) ... [2020-10-12 16:23:27,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@188ae674 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:23:27, skipping insertion in model container [2020-10-12 16:23:27,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:23:26" (2/3) ... [2020-10-12 16:23:27,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@188ae674 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:23:27, skipping insertion in model container [2020-10-12 16:23:27,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:23:27" (3/3) ... [2020-10-12 16:23:27,362 INFO L109 eAbstractionObserver]: Analyzing ICFG ludcmp.c [2020-10-12 16:23:27,373 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 16:23:27,382 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 16:23:27,397 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 16:23:27,424 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 16:23:27,424 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 16:23:27,424 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 16:23:27,424 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 16:23:27,424 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 16:23:27,425 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 16:23:27,425 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 16:23:27,425 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 16:23:27,443 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states. [2020-10-12 16:23:27,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-12 16:23:27,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:23:27,450 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:23:27,450 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:23:27,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:23:27,455 INFO L82 PathProgramCache]: Analyzing trace with hash 406725423, now seen corresponding path program 1 times [2020-10-12 16:23:27,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:23:27,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194354264] [2020-10-12 16:23:27,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:23:27,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:23:27,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:27,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:23:27,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 16:23:27,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:23:27,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-12 16:23:27,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:23:27,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:23:27,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 16:23:27,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:23:27,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 16:23:27,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:23:27,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:23:27,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:27,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:23:27,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:23:27,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:23:27,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-12 16:23:27,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:23:27,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:23:27,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:23:27,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:23:27,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 16:23:27,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:23:27,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1194354264] [2020-10-12 16:23:27,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:23:27,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 16:23:27,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775578846] [2020-10-12 16:23:27,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 16:23:27,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:23:27,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 16:23:27,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 16:23:27,905 INFO L87 Difference]: Start difference. First operand 64 states. Second operand 3 states. [2020-10-12 16:23:28,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:23:28,122 INFO L93 Difference]: Finished difference Result 127 states and 191 transitions. [2020-10-12 16:23:28,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 16:23:28,124 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-12 16:23:28,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:23:28,134 INFO L225 Difference]: With dead ends: 127 [2020-10-12 16:23:28,135 INFO L226 Difference]: Without dead ends: 24 [2020-10-12 16:23:28,139 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 [2020-10-12 16:23:28,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-12 16:23:28,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2020-10-12 16:23:28,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-12 16:23:28,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2020-10-12 16:23:28,186 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 12 [2020-10-12 16:23:28,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:23:28,187 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-10-12 16:23:28,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 16:23:28,187 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2020-10-12 16:23:28,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-12 16:23:28,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:23:28,188 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:23:28,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 16:23:28,189 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:23:28,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:23:28,190 INFO L82 PathProgramCache]: Analyzing trace with hash 394719650, now seen corresponding path program 1 times [2020-10-12 16:23:28,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:23:28,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [666423208] [2020-10-12 16:23:28,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:23:28,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:23:28,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:28,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:23:28,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 16:23:28,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:23:28,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-12 16:23:28,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:23:28,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 16:23:28,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 16:23:28,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 16:23:28,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:23:28,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:23:28,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:23:28,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:28,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:23:28,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:23:28,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:23:28,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 16:23:28,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:23:28,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:23:28,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:23:28,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:23:28,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:23:28,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:23:28,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [666423208] [2020-10-12 16:23:28,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:23:28,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 16:23:28,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391350373] [2020-10-12 16:23:28,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 16:23:28,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:23:28,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 16:23:28,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 16:23:28,505 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 5 states. [2020-10-12 16:23:28,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:23:28,671 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2020-10-12 16:23:28,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 16:23:28,672 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-12 16:23:28,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:23:28,673 INFO L225 Difference]: With dead ends: 40 [2020-10-12 16:23:28,673 INFO L226 Difference]: Without dead ends: 26 [2020-10-12 16:23:28,674 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 [2020-10-12 16:23:28,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-12 16:23:28,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 21. [2020-10-12 16:23:28,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-12 16:23:28,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2020-10-12 16:23:28,681 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 12 [2020-10-12 16:23:28,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:23:28,682 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2020-10-12 16:23:28,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 16:23:28,682 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2020-10-12 16:23:28,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-12 16:23:28,683 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:23:28,683 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:23:28,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 16:23:28,684 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:23:28,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:23:28,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1180233829, now seen corresponding path program 1 times [2020-10-12 16:23:28,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:23:28,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1356279549] [2020-10-12 16:23:28,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:23:28,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:23:28,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:28,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:28,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:23:28,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 16:23:28,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:23:28,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-12 16:23:28,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:23:28,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:23:28,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 16:23:28,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 16:23:28,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:23:28,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:23:28,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:23:28,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:28,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:23:28,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:23:28,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:23:28,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 16:23:28,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:23:28,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:23:28,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:23:28,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:23:28,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:23:28,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:23:28,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1356279549] [2020-10-12 16:23:28,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:23:28,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 16:23:28,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859216108] [2020-10-12 16:23:28,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 16:23:28,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:23:28,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 16:23:28,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 16:23:28,940 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 6 states. [2020-10-12 16:23:29,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:23:29,101 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2020-10-12 16:23:29,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 16:23:29,102 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-12 16:23:29,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:23:29,103 INFO L225 Difference]: With dead ends: 45 [2020-10-12 16:23:29,103 INFO L226 Difference]: Without dead ends: 30 [2020-10-12 16:23:29,104 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 [2020-10-12 16:23:29,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-12 16:23:29,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 25. [2020-10-12 16:23:29,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-12 16:23:29,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2020-10-12 16:23:29,111 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 16 [2020-10-12 16:23:29,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:23:29,111 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2020-10-12 16:23:29,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 16:23:29,112 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2020-10-12 16:23:29,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-12 16:23:29,113 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:23:29,113 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:23:29,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 16:23:29,114 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:23:29,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:23:29,114 INFO L82 PathProgramCache]: Analyzing trace with hash -232421100, now seen corresponding path program 2 times [2020-10-12 16:23:29,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:23:29,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717882790] [2020-10-12 16:23:29,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:23:29,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:23:29,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:29,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:29,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:23:29,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 16:23:29,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:23:29,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-12 16:23:29,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:23:29,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 16:23:29,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 16:23:29,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 16:23:29,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:23:29,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:23:29,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:23:29,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:29,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:23:29,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:23:29,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:23:29,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 16:23:29,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:23:29,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:23:29,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:23:29,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:23:29,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-12 16:23:29,420 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:23:29,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [717882790] [2020-10-12 16:23:29,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:23:29,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 16:23:29,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607814557] [2020-10-12 16:23:29,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 16:23:29,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:23:29,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 16:23:29,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 16:23:29,424 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 7 states. [2020-10-12 16:23:29,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:23:29,638 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2020-10-12 16:23:29,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 16:23:29,639 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-10-12 16:23:29,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:23:29,642 INFO L225 Difference]: With dead ends: 53 [2020-10-12 16:23:29,643 INFO L226 Difference]: Without dead ends: 34 [2020-10-12 16:23:29,644 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-10-12 16:23:29,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-12 16:23:29,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2020-10-12 16:23:29,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-12 16:23:29,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-12 16:23:29,659 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 20 [2020-10-12 16:23:29,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:23:29,660 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-12 16:23:29,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 16:23:29,660 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-12 16:23:29,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-12 16:23:29,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:23:29,662 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:23:29,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 16:23:29,663 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:23:29,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:23:29,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1802018317, now seen corresponding path program 3 times [2020-10-12 16:23:29,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:23:29,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1203902436] [2020-10-12 16:23:29,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:23:29,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:23:29,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:29,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:29,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:23:29,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 16:23:29,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:23:29,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-12 16:23:29,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:23:29,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 16:23:29,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 16:23:29,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 16:23:29,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:23:30,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:23:30,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:23:30,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:30,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:23:30,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:23:30,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:23:30,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 16:23:30,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:23:30,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:23:30,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:23:30,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:23:30,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:23:30,048 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:23:30,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1203902436] [2020-10-12 16:23:30,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:23:30,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 16:23:30,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420161284] [2020-10-12 16:23:30,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 16:23:30,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:23:30,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 16:23:30,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 16:23:30,052 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 8 states. [2020-10-12 16:23:30,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:23:30,243 INFO L93 Difference]: Finished difference Result 61 states and 72 transitions. [2020-10-12 16:23:30,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 16:23:30,243 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-10-12 16:23:30,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:23:30,244 INFO L225 Difference]: With dead ends: 61 [2020-10-12 16:23:30,245 INFO L226 Difference]: Without dead ends: 38 [2020-10-12 16:23:30,245 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2020-10-12 16:23:30,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-12 16:23:30,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 33. [2020-10-12 16:23:30,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-12 16:23:30,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2020-10-12 16:23:30,252 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 24 [2020-10-12 16:23:30,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:23:30,252 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2020-10-12 16:23:30,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 16:23:30,253 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2020-10-12 16:23:30,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-12 16:23:30,254 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:23:30,254 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:23:30,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 16:23:30,254 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:23:30,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:23:30,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1296658810, now seen corresponding path program 4 times [2020-10-12 16:23:30,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:23:30,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1180703712] [2020-10-12 16:23:30,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:23:30,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:23:30,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:30,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:30,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:23:30,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 16:23:30,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:23:30,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-12 16:23:30,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:23:30,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 16:23:30,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 16:23:30,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 16:23:30,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:23:30,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:23:30,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:23:30,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:30,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:23:30,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:23:30,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:23:30,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 16:23:30,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:23:30,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:23:30,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:23:30,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:23:30,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:23:30,533 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:23:30,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1180703712] [2020-10-12 16:23:30,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:23:30,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 16:23:30,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090216398] [2020-10-12 16:23:30,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 16:23:30,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:23:30,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 16:23:30,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-12 16:23:30,536 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand 9 states. [2020-10-12 16:23:30,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:23:30,749 INFO L93 Difference]: Finished difference Result 69 states and 82 transitions. [2020-10-12 16:23:30,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 16:23:30,750 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-10-12 16:23:30,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:23:30,751 INFO L225 Difference]: With dead ends: 69 [2020-10-12 16:23:30,751 INFO L226 Difference]: Without dead ends: 42 [2020-10-12 16:23:30,752 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 [2020-10-12 16:23:30,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-12 16:23:30,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 37. [2020-10-12 16:23:30,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-12 16:23:30,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2020-10-12 16:23:30,758 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 28 [2020-10-12 16:23:30,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:23:30,759 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2020-10-12 16:23:30,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 16:23:30,759 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2020-10-12 16:23:30,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-12 16:23:30,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:23:30,760 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:23:30,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 16:23:30,761 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:23:30,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:23:30,761 INFO L82 PathProgramCache]: Analyzing trace with hash -936011137, now seen corresponding path program 5 times [2020-10-12 16:23:30,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:23:30,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1622886489] [2020-10-12 16:23:30,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:23:30,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:23:30,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:30,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:30,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:23:30,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 16:23:30,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:23:30,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-12 16:23:30,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:23:30,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 16:23:30,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 16:23:30,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 16:23:30,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:23:31,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:23:31,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:23:31,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:31,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:23:31,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:23:31,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:23:31,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 16:23:31,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:23:31,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:23:31,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:23:31,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:23:31,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:23:31,088 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:23:31,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1622886489] [2020-10-12 16:23:31,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:23:31,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 16:23:31,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957436565] [2020-10-12 16:23:31,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 16:23:31,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:23:31,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 16:23:31,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-12 16:23:31,091 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand 10 states. [2020-10-12 16:23:31,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:23:31,320 INFO L93 Difference]: Finished difference Result 74 states and 88 transitions. [2020-10-12 16:23:31,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 16:23:31,320 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2020-10-12 16:23:31,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:23:31,321 INFO L225 Difference]: With dead ends: 74 [2020-10-12 16:23:31,321 INFO L226 Difference]: Without dead ends: 43 [2020-10-12 16:23:31,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=199, Unknown=0, NotChecked=0, Total=306 [2020-10-12 16:23:31,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-12 16:23:31,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2020-10-12 16:23:31,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-12 16:23:31,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2020-10-12 16:23:31,329 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 32 [2020-10-12 16:23:31,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:23:31,329 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2020-10-12 16:23:31,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 16:23:31,329 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2020-10-12 16:23:31,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-12 16:23:31,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:23:31,331 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:23:31,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 16:23:31,331 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:23:31,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:23:31,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1360264712, now seen corresponding path program 6 times [2020-10-12 16:23:31,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:23:31,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [896866072] [2020-10-12 16:23:31,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:23:31,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:23:31,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:31,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:31,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:23:31,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 16:23:31,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:23:31,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-12 16:23:31,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:23:31,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 16:23:31,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 16:23:31,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 16:23:31,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:23:31,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:23:31,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:23:31,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:31,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:23:31,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:23:31,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:23:31,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 16:23:31,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:23:31,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:23:31,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:23:31,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:23:31,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:23:31,781 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:23:31,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [896866072] [2020-10-12 16:23:31,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:23:31,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 16:23:31,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029090521] [2020-10-12 16:23:31,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 16:23:31,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:23:31,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 16:23:31,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-12 16:23:31,784 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 12 states. [2020-10-12 16:23:33,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:23:33,115 INFO L93 Difference]: Finished difference Result 183 states and 226 transitions. [2020-10-12 16:23:33,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-12 16:23:33,115 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 36 [2020-10-12 16:23:33,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:23:33,120 INFO L225 Difference]: With dead ends: 183 [2020-10-12 16:23:33,120 INFO L226 Difference]: Without dead ends: 148 [2020-10-12 16:23:33,121 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=393, Invalid=1167, Unknown=0, NotChecked=0, Total=1560 [2020-10-12 16:23:33,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-12 16:23:33,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 69. [2020-10-12 16:23:33,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-12 16:23:33,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 83 transitions. [2020-10-12 16:23:33,146 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 83 transitions. Word has length 36 [2020-10-12 16:23:33,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:23:33,147 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 83 transitions. [2020-10-12 16:23:33,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 16:23:33,147 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 83 transitions. [2020-10-12 16:23:33,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-12 16:23:33,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:23:33,151 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:23:33,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 16:23:33,151 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:23:33,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:23:33,151 INFO L82 PathProgramCache]: Analyzing trace with hash -850791622, now seen corresponding path program 1 times [2020-10-12 16:23:33,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:23:33,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1724459262] [2020-10-12 16:23:33,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:23:33,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-12 16:23:33,168 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-12 16:23:33,169 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 16:23:33,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 16:23:33,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 04:23:33 BoogieIcfgContainer [2020-10-12 16:23:33,197 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 16:23:33,200 INFO L168 Benchmark]: Toolchain (without parser) took 6915.30 ms. Allocated memory was 139.5 MB in the beginning and 312.0 MB in the end (delta: 172.5 MB). Free memory was 101.3 MB in the beginning and 250.3 MB in the end (delta: -148.9 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-10-12 16:23:33,201 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-10-12 16:23:33,203 INFO L168 Benchmark]: CACSL2BoogieTranslator took 466.04 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 100.9 MB in the beginning and 179.6 MB in the end (delta: -78.7 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-10-12 16:23:33,203 INFO L168 Benchmark]: Boogie Preprocessor took 53.91 ms. Allocated memory is still 202.4 MB. Free memory was 179.6 MB in the beginning and 177.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-10-12 16:23:33,207 INFO L168 Benchmark]: RCFGBuilder took 547.27 ms. Allocated memory is still 202.4 MB. Free memory was 177.0 MB in the beginning and 149.5 MB in the end (delta: 27.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. [2020-10-12 16:23:33,209 INFO L168 Benchmark]: TraceAbstraction took 5842.72 ms. Allocated memory was 202.4 MB in the beginning and 312.0 MB in the end (delta: 109.6 MB). Free memory was 148.8 MB in the beginning and 250.3 MB in the end (delta: -101.4 MB). Peak memory consumption was 8.1 MB. Max. memory is 7.1 GB. [2020-10-12 16:23:33,220 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 466.04 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 100.9 MB in the beginning and 179.6 MB in the end (delta: -78.7 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 53.91 ms. Allocated memory is still 202.4 MB. Free memory was 179.6 MB in the beginning and 177.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 547.27 ms. Allocated memory is still 202.4 MB. Free memory was 177.0 MB in the beginning and 149.5 MB in the end (delta: 27.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5842.72 ms. Allocated memory was 202.4 MB in the beginning and 312.0 MB in the end (delta: 109.6 MB). Free memory was 148.8 MB in the beginning and 250.3 MB in the end (delta: -101.4 MB). Peak memory consumption was 8.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 5]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of to_real at line 96, overapproximation of someBinaryArithmeticDOUBLEoperation at line 98. Possible FailurePath: [L69] double a[50][50], b[50], x[50]; [L86] int i, j, nmax = 50, n = 5, chkerr; [L87] double eps, w; [L89] eps = 1.0e-6 [L91] i = 0 [L91] COND TRUE i <= n [L93] w = 0.0 [L94] j = 0 [L94] COND TRUE j <= n [L96] a[i][j] = (i + 1) + (j + 1) [L97] COND TRUE i == j [L97] EXPR a[i][j] [L97] a[i][j] *= 10.0 [L98] EXPR a[i][j] [L98] w += a[i][j] [L94] j++ [L94] COND TRUE j <= n [L96] a[i][j] = (i + 1) + (j + 1) [L97] COND FALSE !(i == j) [L98] EXPR a[i][j] [L98] w += a[i][j] [L94] j++ [L94] COND TRUE j <= n [L96] a[i][j] = (i + 1) + (j + 1) [L97] COND FALSE !(i == j) [L98] EXPR a[i][j] [L98] w += a[i][j] [L94] j++ [L94] COND TRUE j <= n [L96] a[i][j] = (i + 1) + (j + 1) [L97] COND FALSE !(i == j) [L98] EXPR a[i][j] [L98] w += a[i][j] [L94] j++ [L94] COND TRUE j <= n [L96] a[i][j] = (i + 1) + (j + 1) [L97] COND FALSE !(i == j) [L98] EXPR a[i][j] [L98] w += a[i][j] [L94] j++ [L94] COND TRUE j <= n [L96] a[i][j] = (i + 1) + (j + 1) [L97] COND FALSE !(i == j) [L98] EXPR a[i][j] [L98] w += a[i][j] [L94] j++ [L94] COND FALSE !(j <= n) [L100] CALL __VERIFIER_assert(i==2) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 64 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.7s, OverallIterations: 9, TraceHistogramMax: 6, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 190 SDtfs, 334 SDslu, 221 SDs, 0 SdLazy, 703 SolverSat, 110 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 129 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 110 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 216 NumberOfCodeBlocks, 216 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 172 ConstructedInterpolants, 0 QuantifiedInterpolants, 24712 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 0/161 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...