/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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 23:48:31,260 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 23:48:31,263 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 23:48:31,291 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 23:48:31,291 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 23:48:31,293 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 23:48:31,297 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 23:48:31,300 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 23:48:31,305 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 23:48:31,307 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 23:48:31,309 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 23:48:31,311 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 23:48:31,311 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 23:48:31,313 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 23:48:31,316 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 23:48:31,318 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 23:48:31,319 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 23:48:31,321 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 23:48:31,323 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 23:48:31,326 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 23:48:31,329 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 23:48:31,331 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 23:48:31,332 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 23:48:31,333 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 23:48:31,339 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 23:48:31,339 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 23:48:31,339 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 23:48:31,344 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 23:48:31,345 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 23:48:31,347 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-21 23:48:31,352 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 23:48:31,353 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 23:48:31,360 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 23:48:31,361 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 23:48:31,403 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 23:48:31,403 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 23:48:31,406 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 23:48:31,406 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 23:48:31,406 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 23:48:31,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 23:48:31,407 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 23:48:31,407 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 23:48:31,407 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 23:48:31,407 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 23:48:31,408 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 23:48:31,409 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 23:48:31,409 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 23:48:31,409 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 23:48:31,409 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 23:48:31,410 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 23:48:31,410 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 23:48:31,410 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 23:48:31,410 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 23:48:31,410 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 23:48:31,411 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 23:48:31,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 23:48:31,411 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 23:48:31,411 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 23:48:31,412 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 23:48:31,412 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 23:48:31,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 23:48:31,412 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 23:48:31,412 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 23:48:31,412 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=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-08-21 23:48:31,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 23:48:31,719 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 23:48:31,722 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 23:48:31,724 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 23:48:31,724 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 23:48:31,725 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/stateful_check.c [2020-08-21 23:48:31,803 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd710f84c/3607b656ec0d43488d4c1b7ff5c8d969/FLAG4f99d920d [2020-08-21 23:48:32,325 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 23:48:32,325 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/stateful_check.c [2020-08-21 23:48:32,334 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd710f84c/3607b656ec0d43488d4c1b7ff5c8d969/FLAG4f99d920d [2020-08-21 23:48:32,647 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd710f84c/3607b656ec0d43488d4c1b7ff5c8d969 [2020-08-21 23:48:32,657 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 23:48:32,659 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 23:48:32,661 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 23:48:32,661 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 23:48:32,665 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 23:48:32,666 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:48:32" (1/1) ... [2020-08-21 23:48:32,669 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1613be08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:48:32, skipping insertion in model container [2020-08-21 23:48:32,669 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:48:32" (1/1) ... [2020-08-21 23:48:32,677 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 23:48:32,699 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 23:48:32,879 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 23:48:32,883 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 23:48:32,908 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 23:48:32,922 INFO L208 MainTranslator]: Completed translation [2020-08-21 23:48:32,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:48:32 WrapperNode [2020-08-21 23:48:32,922 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 23:48:32,923 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 23:48:32,923 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 23:48:32,923 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 23:48:32,934 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:48:32" (1/1) ... [2020-08-21 23:48:32,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:48:32" (1/1) ... [2020-08-21 23:48:33,024 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:48:32" (1/1) ... [2020-08-21 23:48:33,025 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:48:32" (1/1) ... [2020-08-21 23:48:33,031 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:48:32" (1/1) ... [2020-08-21 23:48:33,037 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:48:32" (1/1) ... [2020-08-21 23:48:33,038 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:48:32" (1/1) ... [2020-08-21 23:48:33,041 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 23:48:33,041 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 23:48:33,041 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 23:48:33,041 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 23:48:33,043 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:48:32" (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 23:48:33,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 23:48:33,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 23:48:33,112 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-08-21 23:48:33,113 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-08-21 23:48:33,113 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-08-21 23:48:33,113 INFO L138 BoogieDeclarations]: Found implementation of procedure check_final_state [2020-08-21 23:48:33,113 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_release [2020-08-21 23:48:33,113 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_llseek [2020-08-21 23:48:33,113 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_read [2020-08-21 23:48:33,114 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_open [2020-08-21 23:48:33,114 INFO L138 BoogieDeclarations]: Found implementation of procedure my_init [2020-08-21 23:48:33,114 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 23:48:33,114 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 23:48:33,114 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-08-21 23:48:33,114 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 23:48:33,115 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-08-21 23:48:33,115 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-08-21 23:48:33,115 INFO L130 BoogieDeclarations]: Found specification of procedure check_final_state [2020-08-21 23:48:33,115 INFO L130 BoogieDeclarations]: Found specification of procedure misc_release [2020-08-21 23:48:33,115 INFO L130 BoogieDeclarations]: Found specification of procedure misc_llseek [2020-08-21 23:48:33,115 INFO L130 BoogieDeclarations]: Found specification of procedure misc_read [2020-08-21 23:48:33,115 INFO L130 BoogieDeclarations]: Found specification of procedure misc_open [2020-08-21 23:48:33,116 INFO L130 BoogieDeclarations]: Found specification of procedure my_init [2020-08-21 23:48:33,116 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 23:48:33,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 23:48:33,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 23:48:33,469 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 23:48:33,469 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-21 23:48:33,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:48:33 BoogieIcfgContainer [2020-08-21 23:48:33,475 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 23:48:33,477 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 23:48:33,477 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 23:48:33,480 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 23:48:33,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 11:48:32" (1/3) ... [2020-08-21 23:48:33,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71525bd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:48:33, skipping insertion in model container [2020-08-21 23:48:33,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:48:32" (2/3) ... [2020-08-21 23:48:33,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71525bd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:48:33, skipping insertion in model container [2020-08-21 23:48:33,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:48:33" (3/3) ... [2020-08-21 23:48:33,484 INFO L109 eAbstractionObserver]: Analyzing ICFG stateful_check.c [2020-08-21 23:48:33,503 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 23:48:33,513 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 23:48:33,525 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 23:48:33,554 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 23:48:33,554 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 23:48:33,554 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 23:48:33,554 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 23:48:33,555 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 23:48:33,555 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 23:48:33,555 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 23:48:33,555 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 23:48:33,575 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-08-21 23:48:33,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-21 23:48:33,582 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:48:33,583 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:48:33,583 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:48:33,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:48:33,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1865767033, now seen corresponding path program 1 times [2020-08-21 23:48:33,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:48:33,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1942373624] [2020-08-21 23:48:33,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:48:33,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:33,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:48:33,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:33,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:48:33,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:33,845 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 23:48:33,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1942373624] [2020-08-21 23:48:33,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:48:33,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 23:48:33,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856972288] [2020-08-21 23:48:33,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 23:48:33,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:48:33,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 23:48:33,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 23:48:33,867 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 4 states. [2020-08-21 23:48:34,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:48:34,078 INFO L93 Difference]: Finished difference Result 140 states and 185 transitions. [2020-08-21 23:48:34,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 23:48:34,081 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-08-21 23:48:34,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:48:34,096 INFO L225 Difference]: With dead ends: 140 [2020-08-21 23:48:34,097 INFO L226 Difference]: Without dead ends: 70 [2020-08-21 23:48:34,102 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 23:48:34,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-08-21 23:48:34,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2020-08-21 23:48:34,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-08-21 23:48:34,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 80 transitions. [2020-08-21 23:48:34,173 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 80 transitions. Word has length 16 [2020-08-21 23:48:34,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:48:34,174 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 80 transitions. [2020-08-21 23:48:34,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 23:48:34,175 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 80 transitions. [2020-08-21 23:48:34,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-21 23:48:34,177 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:48:34,178 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 23:48:34,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 23:48:34,179 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:48:34,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:48:34,179 INFO L82 PathProgramCache]: Analyzing trace with hash 6927045, now seen corresponding path program 1 times [2020-08-21 23:48:34,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:48:34,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [886568104] [2020-08-21 23:48:34,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:48:34,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:34,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:48:34,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:34,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:48:34,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:34,334 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 23:48:34,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [886568104] [2020-08-21 23:48:34,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:48:34,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 23:48:34,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198279311] [2020-08-21 23:48:34,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 23:48:34,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:48:34,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 23:48:34,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 23:48:34,339 INFO L87 Difference]: Start difference. First operand 65 states and 80 transitions. Second operand 5 states. [2020-08-21 23:48:34,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:48:34,575 INFO L93 Difference]: Finished difference Result 112 states and 143 transitions. [2020-08-21 23:48:34,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 23:48:34,576 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-08-21 23:48:34,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:48:34,579 INFO L225 Difference]: With dead ends: 112 [2020-08-21 23:48:34,579 INFO L226 Difference]: Without dead ends: 106 [2020-08-21 23:48:34,580 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 23:48:34,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-08-21 23:48:34,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 102. [2020-08-21 23:48:34,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-08-21 23:48:34,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 132 transitions. [2020-08-21 23:48:34,616 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 132 transitions. Word has length 17 [2020-08-21 23:48:34,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:48:34,616 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 132 transitions. [2020-08-21 23:48:34,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 23:48:34,617 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 132 transitions. [2020-08-21 23:48:34,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-08-21 23:48:34,618 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:48:34,618 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 23:48:34,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 23:48:34,619 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:48:34,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:48:34,619 INFO L82 PathProgramCache]: Analyzing trace with hash -695621135, now seen corresponding path program 1 times [2020-08-21 23:48:34,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:48:34,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [745957784] [2020-08-21 23:48:34,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:48:34,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:34,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:48:34,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:34,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:48:34,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:34,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-21 23:48:34,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:34,709 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 23:48:34,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [745957784] [2020-08-21 23:48:34,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:48:34,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 23:48:34,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8814515] [2020-08-21 23:48:34,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 23:48:34,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:48:34,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 23:48:34,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 23:48:34,712 INFO L87 Difference]: Start difference. First operand 102 states and 132 transitions. Second operand 6 states. [2020-08-21 23:48:34,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:48:34,946 INFO L93 Difference]: Finished difference Result 253 states and 356 transitions. [2020-08-21 23:48:34,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 23:48:34,946 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-08-21 23:48:34,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:48:34,949 INFO L225 Difference]: With dead ends: 253 [2020-08-21 23:48:34,949 INFO L226 Difference]: Without dead ends: 162 [2020-08-21 23:48:34,951 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 23:48:34,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-08-21 23:48:34,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 126. [2020-08-21 23:48:34,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-08-21 23:48:34,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 169 transitions. [2020-08-21 23:48:34,971 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 169 transitions. Word has length 29 [2020-08-21 23:48:34,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:48:34,972 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 169 transitions. [2020-08-21 23:48:34,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 23:48:34,972 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 169 transitions. [2020-08-21 23:48:34,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-21 23:48:34,974 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:48:34,974 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 23:48:34,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 23:48:34,974 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:48:34,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:48:34,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1328709660, now seen corresponding path program 1 times [2020-08-21 23:48:34,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:48:34,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758155052] [2020-08-21 23:48:34,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:48:34,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:35,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:48:35,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:35,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:48:35,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:35,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 23:48:35,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:35,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-21 23:48:35,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:35,118 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 23:48:35,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758155052] [2020-08-21 23:48:35,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 23:48:35,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-21 23:48:35,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912248976] [2020-08-21 23:48:35,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 23:48:35,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:48:35,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 23:48:35,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-21 23:48:35,125 INFO L87 Difference]: Start difference. First operand 126 states and 169 transitions. Second operand 7 states. [2020-08-21 23:48:35,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:48:35,442 INFO L93 Difference]: Finished difference Result 350 states and 513 transitions. [2020-08-21 23:48:35,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 23:48:35,443 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-08-21 23:48:35,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:48:35,446 INFO L225 Difference]: With dead ends: 350 [2020-08-21 23:48:35,446 INFO L226 Difference]: Without dead ends: 235 [2020-08-21 23:48:35,451 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 23:48:35,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-08-21 23:48:35,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 150. [2020-08-21 23:48:35,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-08-21 23:48:35,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 208 transitions. [2020-08-21 23:48:35,503 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 208 transitions. Word has length 40 [2020-08-21 23:48:35,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:48:35,503 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 208 transitions. [2020-08-21 23:48:35,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 23:48:35,504 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 208 transitions. [2020-08-21 23:48:35,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 23:48:35,508 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:48:35,508 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 23:48:35,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 23:48:35,509 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:48:35,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:48:35,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1520942249, now seen corresponding path program 1 times [2020-08-21 23:48:35,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:48:35,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1337249078] [2020-08-21 23:48:35,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:48:35,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:35,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:48:35,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:35,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:48:35,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:35,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 23:48:35,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:35,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-21 23:48:35,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:35,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 23:48:35,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:35,693 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 23:48:35,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1337249078] [2020-08-21 23:48:35,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 23:48:35,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-21 23:48:35,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287793584] [2020-08-21 23:48:35,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 23:48:35,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:48:35,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 23:48:35,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-08-21 23:48:35,697 INFO L87 Difference]: Start difference. First operand 150 states and 208 transitions. Second operand 8 states. [2020-08-21 23:48:36,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:48:36,039 INFO L93 Difference]: Finished difference Result 447 states and 675 transitions. [2020-08-21 23:48:36,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 23:48:36,040 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-21 23:48:36,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:48:36,043 INFO L225 Difference]: With dead ends: 447 [2020-08-21 23:48:36,043 INFO L226 Difference]: Without dead ends: 308 [2020-08-21 23:48:36,045 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 23:48:36,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-08-21 23:48:36,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 174. [2020-08-21 23:48:36,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-08-21 23:48:36,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 249 transitions. [2020-08-21 23:48:36,063 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 249 transitions. Word has length 51 [2020-08-21 23:48:36,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:48:36,064 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 249 transitions. [2020-08-21 23:48:36,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 23:48:36,064 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 249 transitions. [2020-08-21 23:48:36,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-21 23:48:36,066 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:48:36,067 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 23:48:36,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 23:48:36,067 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:48:36,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:48:36,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1574199465, now seen corresponding path program 1 times [2020-08-21 23:48:36,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:48:36,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1725220609] [2020-08-21 23:48:36,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:48:36,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:36,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:48:36,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:36,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:48:36,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:36,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 23:48:36,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:36,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-21 23:48:36,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:36,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 23:48:36,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:36,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 23:48:36,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:36,194 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 23:48:36,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1725220609] [2020-08-21 23:48:36,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:48:36,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 23:48:36,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961258887] [2020-08-21 23:48:36,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 23:48:36,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:48:36,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 23:48:36,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 23:48:36,197 INFO L87 Difference]: Start difference. First operand 174 states and 249 transitions. Second operand 6 states. [2020-08-21 23:48:36,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:48:36,344 INFO L93 Difference]: Finished difference Result 318 states and 465 transitions. [2020-08-21 23:48:36,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 23:48:36,344 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 63 [2020-08-21 23:48:36,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:48:36,347 INFO L225 Difference]: With dead ends: 318 [2020-08-21 23:48:36,347 INFO L226 Difference]: Without dead ends: 155 [2020-08-21 23:48:36,348 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 23:48:36,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-08-21 23:48:36,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 98. [2020-08-21 23:48:36,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-08-21 23:48:36,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 130 transitions. [2020-08-21 23:48:36,370 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 130 transitions. Word has length 63 [2020-08-21 23:48:36,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:48:36,372 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 130 transitions. [2020-08-21 23:48:36,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 23:48:36,373 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 130 transitions. [2020-08-21 23:48:36,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-21 23:48:36,379 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:48:36,379 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 23:48:36,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 23:48:36,380 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:48:36,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:48:36,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1192820603, now seen corresponding path program 1 times [2020-08-21 23:48:36,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:48:36,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1742761704] [2020-08-21 23:48:36,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:48:36,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 23:48:36,422 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 23:48:36,422 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 23:48:36,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 23:48:36,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 11:48:36 BoogieIcfgContainer [2020-08-21 23:48:36,455 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 23:48:36,459 INFO L168 Benchmark]: Toolchain (without parser) took 3797.57 ms. Allocated memory was 141.0 MB in the beginning and 243.8 MB in the end (delta: 102.8 MB). Free memory was 104.2 MB in the beginning and 129.7 MB in the end (delta: -25.6 MB). Peak memory consumption was 77.2 MB. Max. memory is 7.1 GB. [2020-08-21 23:48:36,460 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 23:48:36,469 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.98 ms. Allocated memory is still 141.0 MB. Free memory was 104.0 MB in the beginning and 93.6 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-08-21 23:48:36,471 INFO L168 Benchmark]: Boogie Preprocessor took 117.87 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 93.6 MB in the beginning and 182.0 MB in the end (delta: -88.4 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-08-21 23:48:36,471 INFO L168 Benchmark]: RCFGBuilder took 434.33 ms. Allocated memory is still 203.9 MB. Free memory was 182.0 MB in the beginning and 162.2 MB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. [2020-08-21 23:48:36,472 INFO L168 Benchmark]: TraceAbstraction took 2978.08 ms. Allocated memory was 203.9 MB in the beginning and 243.8 MB in the end (delta: 39.8 MB). Free memory was 161.6 MB in the beginning and 129.7 MB in the end (delta: 31.8 MB). Peak memory consumption was 71.7 MB. Max. memory is 7.1 GB. [2020-08-21 23:48:36,483 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 261.98 ms. Allocated memory is still 141.0 MB. Free memory was 104.0 MB in the beginning and 93.6 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.87 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 93.6 MB in the beginning and 182.0 MB in the end (delta: -88.4 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 434.33 ms. Allocated memory is still 203.9 MB. Free memory was 182.0 MB in the beginning and 162.2 MB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2978.08 ms. Allocated memory was 203.9 MB in the beginning and 243.8 MB in the end (delta: 39.8 MB). Free memory was 161.6 MB in the beginning and 129.7 MB in the end (delta: 31.8 MB). Peak memory consumption was 71.7 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: 2.8s, 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, 0.3s 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, 0.6s 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...