/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 --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/stateful_check.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 16:32:55,754 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 16:32:55,757 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 16:32:55,779 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 16:32:55,780 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 16:32:55,781 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 16:32:55,782 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 16:32:55,784 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 16:32:55,785 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 16:32:55,786 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 16:32:55,787 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 16:32:55,788 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 16:32:55,788 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 16:32:55,789 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 16:32:55,790 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 16:32:55,791 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 16:32:55,792 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 16:32:55,793 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 16:32:55,794 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 16:32:55,796 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 16:32:55,797 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 16:32:55,798 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 16:32:55,799 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 16:32:55,800 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 16:32:55,802 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 16:32:55,803 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 16:32:55,803 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 16:32:55,803 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 16:32:55,804 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 16:32:55,805 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 16:32:55,805 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 16:32:55,806 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 16:32:55,806 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 16:32:55,807 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 16:32:55,808 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 16:32:55,808 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 16:32:55,809 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 16:32:55,809 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 16:32:55,809 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 16:32:55,810 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 16:32:55,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 16:32:55,812 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 [2020-08-21 16:32:55,834 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 16:32:55,834 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 16:32:55,838 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 16:32:55,838 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 16:32:55,839 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 16:32:55,839 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 16:32:55,839 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 16:32:55,839 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 16:32:55,840 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 16:32:55,840 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 16:32:55,840 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 16:32:55,840 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 16:32:55,840 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 16:32:55,840 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 16:32:55,844 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 16:32:55,844 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 16:32:55,844 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 16:32:55,844 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 16:32:55,845 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 16:32:55,845 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 16:32:55,845 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 16:32:55,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 16:32:55,845 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 16:32:55,845 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 16:32:55,846 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 16:32:55,846 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 16:32:55,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 16:32:55,846 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 16:32:55,846 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 16:32:55,846 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.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 16:32:56,146 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 16:32:56,161 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 16:32:56,167 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 16:32:56,169 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 16:32:56,169 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 16:32:56,170 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/stateful_check.c [2020-08-21 16:32:56,238 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea27ff0d2/0cdc5de77eb044cca3c6faffb52159af/FLAG94be80c23 [2020-08-21 16:32:56,704 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 16:32:56,704 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/stateful_check.c [2020-08-21 16:32:56,712 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea27ff0d2/0cdc5de77eb044cca3c6faffb52159af/FLAG94be80c23 [2020-08-21 16:32:57,066 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea27ff0d2/0cdc5de77eb044cca3c6faffb52159af [2020-08-21 16:32:57,075 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 16:32:57,076 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 16:32:57,077 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 16:32:57,078 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 16:32:57,081 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 16:32:57,082 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:32:57" (1/1) ... [2020-08-21 16:32:57,085 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dfa7d57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:32:57, skipping insertion in model container [2020-08-21 16:32:57,086 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:32:57" (1/1) ... [2020-08-21 16:32:57,093 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 16:32:57,117 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 16:32:57,298 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:32:57,302 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 16:32:57,325 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:32:57,342 INFO L208 MainTranslator]: Completed translation [2020-08-21 16:32:57,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:32:57 WrapperNode [2020-08-21 16:32:57,342 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 16:32:57,343 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 16:32:57,343 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 16:32:57,343 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 16:32:57,355 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:32:57" (1/1) ... [2020-08-21 16:32:57,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:32:57" (1/1) ... [2020-08-21 16:32:57,446 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:32:57" (1/1) ... [2020-08-21 16:32:57,447 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:32:57" (1/1) ... [2020-08-21 16:32:57,453 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:32:57" (1/1) ... [2020-08-21 16:32:57,461 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:32:57" (1/1) ... [2020-08-21 16:32:57,462 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:32:57" (1/1) ... [2020-08-21 16:32:57,465 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 16:32:57,465 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 16:32:57,465 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 16:32:57,465 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 16:32:57,466 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:32:57" (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 [2020-08-21 16:32:57,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 16:32:57,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 16:32:57,517 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-08-21 16:32:57,518 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-08-21 16:32:57,518 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-08-21 16:32:57,518 INFO L138 BoogieDeclarations]: Found implementation of procedure check_final_state [2020-08-21 16:32:57,519 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_release [2020-08-21 16:32:57,519 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_llseek [2020-08-21 16:32:57,519 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_read [2020-08-21 16:32:57,520 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_open [2020-08-21 16:32:57,520 INFO L138 BoogieDeclarations]: Found implementation of procedure my_init [2020-08-21 16:32:57,520 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 16:32:57,520 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 16:32:57,520 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-08-21 16:32:57,520 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 16:32:57,521 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-08-21 16:32:57,521 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-08-21 16:32:57,521 INFO L130 BoogieDeclarations]: Found specification of procedure check_final_state [2020-08-21 16:32:57,521 INFO L130 BoogieDeclarations]: Found specification of procedure misc_release [2020-08-21 16:32:57,521 INFO L130 BoogieDeclarations]: Found specification of procedure misc_llseek [2020-08-21 16:32:57,522 INFO L130 BoogieDeclarations]: Found specification of procedure misc_read [2020-08-21 16:32:57,522 INFO L130 BoogieDeclarations]: Found specification of procedure misc_open [2020-08-21 16:32:57,522 INFO L130 BoogieDeclarations]: Found specification of procedure my_init [2020-08-21 16:32:57,522 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 16:32:57,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 16:32:57,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 16:32:57,848 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 16:32:57,848 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-21 16:32:57,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:32:57 BoogieIcfgContainer [2020-08-21 16:32:57,853 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 16:32:57,855 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 16:32:57,855 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 16:32:57,859 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 16:32:57,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 04:32:57" (1/3) ... [2020-08-21 16:32:57,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b75ff8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:32:57, skipping insertion in model container [2020-08-21 16:32:57,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:32:57" (2/3) ... [2020-08-21 16:32:57,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b75ff8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:32:57, skipping insertion in model container [2020-08-21 16:32:57,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:32:57" (3/3) ... [2020-08-21 16:32:57,862 INFO L109 eAbstractionObserver]: Analyzing ICFG stateful_check.c [2020-08-21 16:32:57,873 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 16:32:57,882 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 16:32:57,899 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 16:32:57,927 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 16:32:57,927 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 16:32:57,927 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 16:32:57,927 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 16:32:57,927 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 16:32:57,928 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 16:32:57,928 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 16:32:57,928 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 16:32:57,953 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-08-21 16:32:57,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-21 16:32:57,960 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:32:57,961 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:32:57,962 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:32:57,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:32:57,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1865767033, now seen corresponding path program 1 times [2020-08-21 16:32:57,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:32:57,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106372338] [2020-08-21 16:32:57,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:32:58,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:58,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:32:58,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:58,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:32:58,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:58,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:32:58,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2106372338] [2020-08-21 16:32:58,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:32:58,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 16:32:58,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535920606] [2020-08-21 16:32:58,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 16:32:58,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:32:58,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 16:32:58,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 16:32:58,195 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 4 states. [2020-08-21 16:32:58,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:32:58,439 INFO L93 Difference]: Finished difference Result 140 states and 185 transitions. [2020-08-21 16:32:58,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 16:32:58,441 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-08-21 16:32:58,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:32:58,455 INFO L225 Difference]: With dead ends: 140 [2020-08-21 16:32:58,455 INFO L226 Difference]: Without dead ends: 70 [2020-08-21 16:32:58,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 16:32:58,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-08-21 16:32:58,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2020-08-21 16:32:58,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-08-21 16:32:58,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 80 transitions. [2020-08-21 16:32:58,516 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 80 transitions. Word has length 16 [2020-08-21 16:32:58,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:32:58,517 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 80 transitions. [2020-08-21 16:32:58,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 16:32:58,517 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 80 transitions. [2020-08-21 16:32:58,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-21 16:32:58,518 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:32:58,519 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:32:58,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 16:32:58,519 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:32:58,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:32:58,520 INFO L82 PathProgramCache]: Analyzing trace with hash 6927045, now seen corresponding path program 1 times [2020-08-21 16:32:58,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:32:58,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [571971116] [2020-08-21 16:32:58,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:32:58,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:58,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:32:58,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:58,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:32:58,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:58,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:32:58,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [571971116] [2020-08-21 16:32:58,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:32:58,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 16:32:58,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810426961] [2020-08-21 16:32:58,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 16:32:58,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:32:58,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 16:32:58,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 16:32:58,629 INFO L87 Difference]: Start difference. First operand 65 states and 80 transitions. Second operand 5 states. [2020-08-21 16:32:58,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:32:58,866 INFO L93 Difference]: Finished difference Result 112 states and 143 transitions. [2020-08-21 16:32:58,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 16:32:58,867 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-08-21 16:32:58,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:32:58,869 INFO L225 Difference]: With dead ends: 112 [2020-08-21 16:32:58,870 INFO L226 Difference]: Without dead ends: 106 [2020-08-21 16:32:58,871 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-21 16:32:58,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-08-21 16:32:58,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 102. [2020-08-21 16:32:58,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-08-21 16:32:58,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 132 transitions. [2020-08-21 16:32:58,902 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 132 transitions. Word has length 17 [2020-08-21 16:32:58,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:32:58,903 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 132 transitions. [2020-08-21 16:32:58,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 16:32:58,903 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 132 transitions. [2020-08-21 16:32:58,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-08-21 16:32:58,905 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:32:58,905 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:32:58,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 16:32:58,906 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:32:58,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:32:58,906 INFO L82 PathProgramCache]: Analyzing trace with hash -695621135, now seen corresponding path program 1 times [2020-08-21 16:32:58,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:32:58,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1199718654] [2020-08-21 16:32:58,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:32:58,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:58,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:32:58,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:58,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:32:58,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:59,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-21 16:32:59,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:59,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:32:59,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1199718654] [2020-08-21 16:32:59,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:32:59,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 16:32:59,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698092568] [2020-08-21 16:32:59,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 16:32:59,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:32:59,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 16:32:59,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 16:32:59,013 INFO L87 Difference]: Start difference. First operand 102 states and 132 transitions. Second operand 6 states. [2020-08-21 16:32:59,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:32:59,255 INFO L93 Difference]: Finished difference Result 253 states and 356 transitions. [2020-08-21 16:32:59,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 16:32:59,256 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-08-21 16:32:59,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:32:59,259 INFO L225 Difference]: With dead ends: 253 [2020-08-21 16:32:59,259 INFO L226 Difference]: Without dead ends: 162 [2020-08-21 16:32:59,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-08-21 16:32:59,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-08-21 16:32:59,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 126. [2020-08-21 16:32:59,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-08-21 16:32:59,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 169 transitions. [2020-08-21 16:32:59,280 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 169 transitions. Word has length 29 [2020-08-21 16:32:59,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:32:59,280 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 169 transitions. [2020-08-21 16:32:59,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 16:32:59,280 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 169 transitions. [2020-08-21 16:32:59,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-21 16:32:59,282 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:32:59,282 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:32:59,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 16:32:59,283 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:32:59,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:32:59,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1328709660, now seen corresponding path program 1 times [2020-08-21 16:32:59,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:32:59,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [676401395] [2020-08-21 16:32:59,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:32:59,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:59,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:32:59,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:59,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:32:59,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:59,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 16:32:59,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:59,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-21 16:32:59,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:59,403 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:32:59,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [676401395] [2020-08-21 16:32:59,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:32:59,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-21 16:32:59,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521910108] [2020-08-21 16:32:59,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 16:32:59,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:32:59,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 16:32:59,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-21 16:32:59,406 INFO L87 Difference]: Start difference. First operand 126 states and 169 transitions. Second operand 7 states. [2020-08-21 16:32:59,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:32:59,687 INFO L93 Difference]: Finished difference Result 350 states and 513 transitions. [2020-08-21 16:32:59,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 16:32:59,687 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-08-21 16:32:59,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:32:59,690 INFO L225 Difference]: With dead ends: 350 [2020-08-21 16:32:59,691 INFO L226 Difference]: Without dead ends: 235 [2020-08-21 16:32:59,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-08-21 16:32:59,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-08-21 16:32:59,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 150. [2020-08-21 16:32:59,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-08-21 16:32:59,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 208 transitions. [2020-08-21 16:32:59,713 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 208 transitions. Word has length 40 [2020-08-21 16:32:59,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:32:59,714 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 208 transitions. [2020-08-21 16:32:59,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 16:32:59,714 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 208 transitions. [2020-08-21 16:32:59,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 16:32:59,716 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:32:59,716 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:32:59,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 16:32:59,717 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:32:59,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:32:59,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1520942249, now seen corresponding path program 1 times [2020-08-21 16:32:59,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:32:59,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [820342827] [2020-08-21 16:32:59,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:32:59,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:59,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:32:59,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:59,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:32:59,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:59,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 16:32:59,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:59,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-21 16:32:59,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:59,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 16:32:59,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:59,861 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:32:59,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [820342827] [2020-08-21 16:32:59,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:32:59,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-21 16:32:59,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11810514] [2020-08-21 16:32:59,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 16:32:59,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:32:59,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 16:32:59,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-08-21 16:32:59,865 INFO L87 Difference]: Start difference. First operand 150 states and 208 transitions. Second operand 8 states. [2020-08-21 16:33:00,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:33:00,231 INFO L93 Difference]: Finished difference Result 447 states and 675 transitions. [2020-08-21 16:33:00,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 16:33:00,232 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-21 16:33:00,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:33:00,241 INFO L225 Difference]: With dead ends: 447 [2020-08-21 16:33:00,241 INFO L226 Difference]: Without dead ends: 308 [2020-08-21 16:33:00,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-08-21 16:33:00,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-08-21 16:33:00,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 174. [2020-08-21 16:33:00,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-08-21 16:33:00,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 249 transitions. [2020-08-21 16:33:00,280 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 249 transitions. Word has length 51 [2020-08-21 16:33:00,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:33:00,280 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 249 transitions. [2020-08-21 16:33:00,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 16:33:00,281 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 249 transitions. [2020-08-21 16:33:00,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-21 16:33:00,290 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:33:00,290 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:33:00,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 16:33:00,291 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:33:00,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:33:00,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1574199465, now seen corresponding path program 1 times [2020-08-21 16:33:00,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:33:00,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [550534133] [2020-08-21 16:33:00,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:33:00,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:33:00,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:33:00,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:33:00,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:33:00,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:33:00,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 16:33:00,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:33:00,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-21 16:33:00,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:33:00,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 16:33:00,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:33:00,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 16:33:00,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:33:00,429 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-08-21 16:33:00,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [550534133] [2020-08-21 16:33:00,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:33:00,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 16:33:00,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722421040] [2020-08-21 16:33:00,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 16:33:00,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:33:00,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 16:33:00,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 16:33:00,432 INFO L87 Difference]: Start difference. First operand 174 states and 249 transitions. Second operand 6 states. [2020-08-21 16:33:00,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:33:00,578 INFO L93 Difference]: Finished difference Result 318 states and 465 transitions. [2020-08-21 16:33:00,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 16:33:00,578 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 63 [2020-08-21 16:33:00,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:33:00,580 INFO L225 Difference]: With dead ends: 318 [2020-08-21 16:33:00,581 INFO L226 Difference]: Without dead ends: 155 [2020-08-21 16:33:00,582 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-08-21 16:33:00,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-08-21 16:33:00,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 98. [2020-08-21 16:33:00,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-08-21 16:33:00,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 130 transitions. [2020-08-21 16:33:00,592 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 130 transitions. Word has length 63 [2020-08-21 16:33:00,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:33:00,592 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 130 transitions. [2020-08-21 16:33:00,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 16:33:00,593 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 130 transitions. [2020-08-21 16:33:00,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-21 16:33:00,595 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:33:00,595 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:33:00,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 16:33:00,596 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:33:00,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:33:00,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1192820603, now seen corresponding path program 1 times [2020-08-21 16:33:00,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:33:00,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [803805415] [2020-08-21 16:33:00,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:33:00,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 16:33:00,616 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 16:33:00,617 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 16:33:00,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 16:33:00,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 04:33:00 BoogieIcfgContainer [2020-08-21 16:33:00,642 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 16:33:00,645 INFO L168 Benchmark]: Toolchain (without parser) took 3567.88 ms. Allocated memory was 138.4 MB in the beginning and 248.5 MB in the end (delta: 110.1 MB). Free memory was 101.3 MB in the beginning and 142.8 MB in the end (delta: -41.5 MB). Peak memory consumption was 68.6 MB. Max. memory is 7.1 GB. [2020-08-21 16:33:00,646 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.5 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-08-21 16:33:00,647 INFO L168 Benchmark]: CACSL2BoogieTranslator took 265.32 ms. Allocated memory is still 138.4 MB. Free memory was 101.3 MB in the beginning and 91.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-08-21 16:33:00,648 INFO L168 Benchmark]: Boogie Preprocessor took 121.61 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 91.0 MB in the beginning and 179.5 MB in the end (delta: -88.5 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. [2020-08-21 16:33:00,649 INFO L168 Benchmark]: RCFGBuilder took 388.43 ms. Allocated memory is still 201.3 MB. Free memory was 179.5 MB in the beginning and 158.7 MB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. [2020-08-21 16:33:00,650 INFO L168 Benchmark]: TraceAbstraction took 2787.44 ms. Allocated memory was 201.3 MB in the beginning and 248.5 MB in the end (delta: 47.2 MB). Free memory was 158.7 MB in the beginning and 142.8 MB in the end (delta: 15.9 MB). Peak memory consumption was 63.0 MB. Max. memory is 7.1 GB. [2020-08-21 16:33:00,654 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.5 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 265.32 ms. Allocated memory is still 138.4 MB. Free memory was 101.3 MB in the beginning and 91.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.61 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 91.0 MB in the beginning and 179.5 MB in the end (delta: -88.5 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 388.43 ms. Allocated memory is still 201.3 MB. Free memory was 179.5 MB in the beginning and 158.7 MB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2787.44 ms. Allocated memory was 201.3 MB in the beginning and 248.5 MB in the end (delta: 47.2 MB). Free memory was 158.7 MB in the beginning and 142.8 MB in the end (delta: 15.9 MB). Peak memory consumption was 63.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L9] int ldv_mutex = 1; [L11] int open_called = 0; [L74] int ldv_s_misc_fops_file_operations = 0; [L75] CALL my_init() [L69] open_called = 0 [L70] return 0; [L75] RET my_init() [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L81] COND TRUE ldv_s_misc_fops_file_operations==0 [L82] CALL misc_open() [L57] COND TRUE __VERIFIER_nondet_int() [L59] return 1; [L82] RET misc_open() [L83] ldv_s_misc_fops_file_operations++ [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: [L89] COND TRUE ldv_s_misc_fops_file_operations==1 [L90] CALL misc_read() [L52] return 0; [L90] RET misc_read() [L91] ldv_s_misc_fops_file_operations++ [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: [L96] case 2: [L97] COND TRUE ldv_s_misc_fops_file_operations==2 [L98] CALL misc_llseek() [L48] return 0; [L98] RET misc_llseek() [L99] ldv_s_misc_fops_file_operations++ [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: [L96] case 2: [L104] case 3: [L105] COND TRUE ldv_s_misc_fops_file_operations==3 [L106] CALL misc_release() [L34] COND FALSE !(\read(open_called)) [L41] CALL mutex_lock() [L16] (ldv_mutex == 1) ? 0 : __blast_assert() [L17] ldv_mutex = 2 [L41] RET mutex_lock() [L42] CALL mutex_lock() [L16] (ldv_mutex == 1) ? 0 : __blast_assert() [L16] CALL __blast_assert() [L4] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.6s, OverallIterations: 7, TraceHistogramMax: 4, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 408 SDtfs, 599 SDslu, 753 SDs, 0 SdLazy, 707 SolverSat, 229 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 79 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=174occurred in iteration=5, 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, 6 MinimizatonAttempts, 321 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 279 NumberOfCodeBlocks, 279 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 210 ConstructedInterpolants, 0 QuantifiedInterpolants, 16438 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 25/39 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 incorrect! Received shutdown request...