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 -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/ldv-regression/stateful_check.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:28:34,086 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:28:34,088 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:28:34,100 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:28:34,101 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:28:34,102 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:28:34,103 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:28:34,105 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:28:34,106 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:28:34,107 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:28:34,108 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:28:34,109 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:28:34,109 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:28:34,110 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:28:34,111 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:28:34,112 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:28:34,113 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:28:34,114 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:28:34,116 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:28:34,117 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:28:34,119 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:28:34,120 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:28:34,121 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:28:34,122 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:28:34,124 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-20 13:28:34,127 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:28:34,128 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:28:34,129 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:28:34,129 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:28:34,130 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:28:34,131 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:28:34,131 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:28:34,131 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:28:34,132 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:28:34,133 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:28:34,133 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:28:34,134 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-20 13:28:34,149 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:28:34,149 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:28:34,149 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:28:34,150 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:28:34,150 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:28:34,150 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:28:34,151 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:28:34,151 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:28:34,151 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:28:34,151 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:28:34,152 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:28:34,152 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:28:34,152 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:28:34,152 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:28:34,153 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:28:34,153 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:28:34,153 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:28:34,153 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:28:34,153 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:28:34,154 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:28:34,154 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:28:34,154 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:28:34,154 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:28:34,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:28:34,155 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:28:34,155 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:28:34,155 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:28:34,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:28:34,155 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:28:34,156 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:28:34,187 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:28:34,202 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:28:34,205 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:28:34,207 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:28:34,207 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:28:34,208 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/stateful_check.c [2019-09-20 13:28:34,283 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0231e182/fbb21cc450084b06a720b65d00fb44dc/FLAG36aa05c98 [2019-09-20 13:28:34,718 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:28:34,719 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/stateful_check.c [2019-09-20 13:28:34,725 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0231e182/fbb21cc450084b06a720b65d00fb44dc/FLAG36aa05c98 [2019-09-20 13:28:35,113 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0231e182/fbb21cc450084b06a720b65d00fb44dc [2019-09-20 13:28:35,122 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:28:35,124 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:28:35,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:28:35,125 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:28:35,129 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:28:35,130 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:28:35" (1/1) ... [2019-09-20 13:28:35,133 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ba313cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:35, skipping insertion in model container [2019-09-20 13:28:35,133 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:28:35" (1/1) ... [2019-09-20 13:28:35,140 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:28:35,166 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:28:35,394 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:28:35,400 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:28:35,427 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:28:35,442 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:28:35,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:35 WrapperNode [2019-09-20 13:28:35,442 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:28:35,443 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:28:35,443 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:28:35,443 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:28:35,538 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:35" (1/1) ... [2019-09-20 13:28:35,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:35" (1/1) ... [2019-09-20 13:28:35,544 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:35" (1/1) ... [2019-09-20 13:28:35,544 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:35" (1/1) ... [2019-09-20 13:28:35,549 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:35" (1/1) ... [2019-09-20 13:28:35,555 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:35" (1/1) ... [2019-09-20 13:28:35,556 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:35" (1/1) ... [2019-09-20 13:28:35,558 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:28:35,559 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:28:35,559 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:28:35,559 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:28:35,560 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2019-09-20 13:28:35,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:28:35,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:28:35,614 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2019-09-20 13:28:35,615 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2019-09-20 13:28:35,615 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2019-09-20 13:28:35,615 INFO L138 BoogieDeclarations]: Found implementation of procedure check_final_state [2019-09-20 13:28:35,615 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_release [2019-09-20 13:28:35,615 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_llseek [2019-09-20 13:28:35,615 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_read [2019-09-20 13:28:35,615 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_open [2019-09-20 13:28:35,615 INFO L138 BoogieDeclarations]: Found implementation of procedure my_init [2019-09-20 13:28:35,616 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:28:35,616 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:28:35,616 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2019-09-20 13:28:35,616 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:28:35,616 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2019-09-20 13:28:35,617 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2019-09-20 13:28:35,617 INFO L130 BoogieDeclarations]: Found specification of procedure check_final_state [2019-09-20 13:28:35,617 INFO L130 BoogieDeclarations]: Found specification of procedure misc_release [2019-09-20 13:28:35,617 INFO L130 BoogieDeclarations]: Found specification of procedure misc_llseek [2019-09-20 13:28:35,617 INFO L130 BoogieDeclarations]: Found specification of procedure misc_read [2019-09-20 13:28:35,617 INFO L130 BoogieDeclarations]: Found specification of procedure misc_open [2019-09-20 13:28:35,617 INFO L130 BoogieDeclarations]: Found specification of procedure my_init [2019-09-20 13:28:35,618 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:28:35,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:28:35,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:28:35,958 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:28:35,959 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-20 13:28:35,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:28:35 BoogieIcfgContainer [2019-09-20 13:28:35,960 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:28:35,961 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:28:35,961 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:28:35,964 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:28:35,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:28:35" (1/3) ... [2019-09-20 13:28:35,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49711067 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:28:35, skipping insertion in model container [2019-09-20 13:28:35,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:35" (2/3) ... [2019-09-20 13:28:35,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49711067 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:28:35, skipping insertion in model container [2019-09-20 13:28:35,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:28:35" (3/3) ... [2019-09-20 13:28:35,967 INFO L109 eAbstractionObserver]: Analyzing ICFG stateful_check.c [2019-09-20 13:28:35,977 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:28:35,984 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:28:36,000 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:28:36,028 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:28:36,028 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:28:36,028 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:28:36,028 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:28:36,028 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:28:36,028 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:28:36,029 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:28:36,029 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:28:36,044 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2019-09-20 13:28:36,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-20 13:28:36,052 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:28:36,053 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:28:36,055 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:28:36,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:28:36,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1865767033, now seen corresponding path program 1 times [2019-09-20 13:28:36,062 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:28:36,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:36,118 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:28:36,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:36,118 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:28:36,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:28:36,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:28:36,198 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:28:36,198 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:28:36,198 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:28:36,202 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:28:36,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:28:36,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:28:36,214 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 2 states. [2019-09-20 13:28:36,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:28:36,234 INFO L93 Difference]: Finished difference Result 72 states and 87 transitions. [2019-09-20 13:28:36,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:28:36,235 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-09-20 13:28:36,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:28:36,246 INFO L225 Difference]: With dead ends: 72 [2019-09-20 13:28:36,246 INFO L226 Difference]: Without dead ends: 65 [2019-09-20 13:28:36,248 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:28:36,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2019-09-20 13:28:36,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2019-09-20 13:28:36,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2019-09-20 13:28:36,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 80 transitions. [2019-09-20 13:28:36,296 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 80 transitions. Word has length 16 [2019-09-20 13:28:36,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:28:36,297 INFO L475 AbstractCegarLoop]: Abstraction has 65 states and 80 transitions. [2019-09-20 13:28:36,297 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:28:36,297 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 80 transitions. [2019-09-20 13:28:36,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-20 13:28:36,298 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:28:36,299 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:28:36,299 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:28:36,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:28:36,300 INFO L82 PathProgramCache]: Analyzing trace with hash 6927045, now seen corresponding path program 1 times [2019-09-20 13:28:36,300 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:28:36,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:36,302 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:28:36,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:36,302 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:28:36,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:28:36,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:28:36,364 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:28:36,364 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:28:36,364 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:28:36,366 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:28:36,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:28:36,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:28:36,367 INFO L87 Difference]: Start difference. First operand 65 states and 80 transitions. Second operand 3 states. [2019-09-20 13:28:36,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:28:36,425 INFO L93 Difference]: Finished difference Result 104 states and 134 transitions. [2019-09-20 13:28:36,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:28:36,426 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-09-20 13:28:36,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:28:36,430 INFO L225 Difference]: With dead ends: 104 [2019-09-20 13:28:36,431 INFO L226 Difference]: Without dead ends: 102 [2019-09-20 13:28:36,432 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:28:36,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2019-09-20 13:28:36,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2019-09-20 13:28:36,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2019-09-20 13:28:36,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 132 transitions. [2019-09-20 13:28:36,453 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 132 transitions. Word has length 17 [2019-09-20 13:28:36,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:28:36,454 INFO L475 AbstractCegarLoop]: Abstraction has 102 states and 132 transitions. [2019-09-20 13:28:36,454 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:28:36,454 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 132 transitions. [2019-09-20 13:28:36,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-09-20 13:28:36,456 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:28:36,458 INFO L407 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] [2019-09-20 13:28:36,458 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:28:36,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:28:36,459 INFO L82 PathProgramCache]: Analyzing trace with hash -695621135, now seen corresponding path program 1 times [2019-09-20 13:28:36,460 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:28:36,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:36,462 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:28:36,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:36,463 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:28:36,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:28:36,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:28:36,530 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:28:36,530 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:28:36,531 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:28:36,531 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:28:36,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:28:36,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:28:36,532 INFO L87 Difference]: Start difference. First operand 102 states and 132 transitions. Second operand 3 states. [2019-09-20 13:28:36,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:28:36,590 INFO L93 Difference]: Finished difference Result 127 states and 170 transitions. [2019-09-20 13:28:36,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:28:36,591 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2019-09-20 13:28:36,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:28:36,593 INFO L225 Difference]: With dead ends: 127 [2019-09-20 13:28:36,594 INFO L226 Difference]: Without dead ends: 127 [2019-09-20 13:28:36,594 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:28:36,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2019-09-20 13:28:36,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 126. [2019-09-20 13:28:36,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2019-09-20 13:28:36,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 169 transitions. [2019-09-20 13:28:36,614 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 169 transitions. Word has length 29 [2019-09-20 13:28:36,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:28:36,615 INFO L475 AbstractCegarLoop]: Abstraction has 126 states and 169 transitions. [2019-09-20 13:28:36,615 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:28:36,615 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 169 transitions. [2019-09-20 13:28:36,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-09-20 13:28:36,617 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:28:36,617 INFO L407 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] [2019-09-20 13:28:36,617 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:28:36,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:28:36,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1328709660, now seen corresponding path program 1 times [2019-09-20 13:28:36,618 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:28:36,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:36,620 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:28:36,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:36,620 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:28:36,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:28:36,692 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:28:36,692 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:28:36,692 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:28:36,693 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 41 with the following transitions: [2019-09-20 13:28:36,695 INFO L207 CegarAbsIntRunner]: [2], [23], [26], [28], [33], [38], [41], [44], [46], [51], [64], [77], [80], [83], [97], [104], [105], [110], [115], [116], [117], [120], [122], [125], [130], [131], [137], [138], [139], [147], [148], [149], [150], [155], [159], [163], [164], [165] [2019-09-20 13:28:36,730 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:28:36,730 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:28:36,827 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-20 13:28:36,830 INFO L272 AbstractInterpreter]: Visited 27 different actions 36 times. Merged at 8 different actions 8 times. Never widened. Performed 69 root evaluator evaluations with a maximum evaluation depth of 5. Performed 69 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 1 fixpoints after 1 different actions. Largest state had 11 variables. [2019-09-20 13:28:36,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:28:36,833 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-20 13:28:36,933 INFO L227 lantSequenceWeakener]: Weakened 27 states. On average, predicates are now at 46.98% of their original sizes. [2019-09-20 13:28:36,933 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-20 13:28:37,093 INFO L420 sIntCurrentIteration]: We unified 39 AI predicates to 39 [2019-09-20 13:28:37,093 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-20 13:28:37,094 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:28:37,094 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [5] total 18 [2019-09-20 13:28:37,095 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:28:37,095 INFO L454 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-09-20 13:28:37,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-09-20 13:28:37,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2019-09-20 13:28:37,096 INFO L87 Difference]: Start difference. First operand 126 states and 169 transitions. Second operand 15 states. [2019-09-20 13:28:38,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:28:38,239 INFO L93 Difference]: Finished difference Result 176 states and 238 transitions. [2019-09-20 13:28:38,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-09-20 13:28:38,240 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 40 [2019-09-20 13:28:38,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:28:38,242 INFO L225 Difference]: With dead ends: 176 [2019-09-20 13:28:38,243 INFO L226 Difference]: Without dead ends: 176 [2019-09-20 13:28:38,243 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2019-09-20 13:28:38,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2019-09-20 13:28:38,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 168. [2019-09-20 13:28:38,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2019-09-20 13:28:38,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 227 transitions. [2019-09-20 13:28:38,264 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 227 transitions. Word has length 40 [2019-09-20 13:28:38,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:28:38,265 INFO L475 AbstractCegarLoop]: Abstraction has 168 states and 227 transitions. [2019-09-20 13:28:38,265 INFO L476 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-09-20 13:28:38,265 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 227 transitions. [2019-09-20 13:28:38,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-09-20 13:28:38,270 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:28:38,270 INFO L407 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] [2019-09-20 13:28:38,271 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:28:38,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:28:38,273 INFO L82 PathProgramCache]: Analyzing trace with hash -83945179, now seen corresponding path program 1 times [2019-09-20 13:28:38,274 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:28:38,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:38,276 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:28:38,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:38,276 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:28:38,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:28:38,383 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:28:38,384 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:28:38,384 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:28:38,384 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 41 with the following transitions: [2019-09-20 13:28:38,385 INFO L207 CegarAbsIntRunner]: [2], [23], [26], [28], [33], [38], [41], [44], [46], [51], [64], [77], [80], [83], [97], [104], [105], [110], [115], [116], [117], [121], [122], [125], [130], [131], [137], [138], [139], [147], [148], [149], [150], [155], [159], [163], [164], [165] [2019-09-20 13:28:38,389 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:28:38,389 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:28:38,410 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-20 13:28:38,411 INFO L272 AbstractInterpreter]: Visited 27 different actions 36 times. Merged at 8 different actions 8 times. Never widened. Performed 69 root evaluator evaluations with a maximum evaluation depth of 5. Performed 69 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 1 fixpoints after 1 different actions. Largest state had 11 variables. [2019-09-20 13:28:38,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:28:38,411 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-20 13:28:38,464 INFO L227 lantSequenceWeakener]: Weakened 27 states. On average, predicates are now at 53.78% of their original sizes. [2019-09-20 13:28:38,464 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-20 13:28:38,587 INFO L420 sIntCurrentIteration]: We unified 39 AI predicates to 39 [2019-09-20 13:28:38,589 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-20 13:28:38,589 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:28:38,589 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [5] total 18 [2019-09-20 13:28:38,589 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:28:38,590 INFO L454 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-09-20 13:28:38,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-09-20 13:28:38,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2019-09-20 13:28:38,591 INFO L87 Difference]: Start difference. First operand 168 states and 227 transitions. Second operand 15 states. [2019-09-20 13:28:39,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:28:39,558 INFO L93 Difference]: Finished difference Result 210 states and 287 transitions. [2019-09-20 13:28:39,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-09-20 13:28:39,559 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 40 [2019-09-20 13:28:39,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:28:39,562 INFO L225 Difference]: With dead ends: 210 [2019-09-20 13:28:39,562 INFO L226 Difference]: Without dead ends: 210 [2019-09-20 13:28:39,563 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2019-09-20 13:28:39,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2019-09-20 13:28:39,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 207. [2019-09-20 13:28:39,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2019-09-20 13:28:39,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 283 transitions. [2019-09-20 13:28:39,585 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 283 transitions. Word has length 40 [2019-09-20 13:28:39,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:28:39,586 INFO L475 AbstractCegarLoop]: Abstraction has 207 states and 283 transitions. [2019-09-20 13:28:39,586 INFO L476 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-09-20 13:28:39,586 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 283 transitions. [2019-09-20 13:28:39,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-09-20 13:28:39,588 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:28:39,588 INFO L407 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] [2019-09-20 13:28:39,589 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:28:39,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:28:39,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1367154186, now seen corresponding path program 1 times [2019-09-20 13:28:39,589 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:28:39,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:39,591 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:28:39,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:39,591 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:28:39,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:28:39,644 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:28:39,644 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:28:39,645 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:28:39,645 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:28:39,645 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:28:39,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:28:39,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:28:39,647 INFO L87 Difference]: Start difference. First operand 207 states and 283 transitions. Second operand 4 states. [2019-09-20 13:28:39,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:28:39,702 INFO L93 Difference]: Finished difference Result 329 states and 474 transitions. [2019-09-20 13:28:39,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:28:39,703 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2019-09-20 13:28:39,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:28:39,709 INFO L225 Difference]: With dead ends: 329 [2019-09-20 13:28:39,709 INFO L226 Difference]: Without dead ends: 329 [2019-09-20 13:28:39,712 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:28:39,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2019-09-20 13:28:39,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 279. [2019-09-20 13:28:39,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2019-09-20 13:28:39,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 402 transitions. [2019-09-20 13:28:39,744 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 402 transitions. Word has length 51 [2019-09-20 13:28:39,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:28:39,744 INFO L475 AbstractCegarLoop]: Abstraction has 279 states and 402 transitions. [2019-09-20 13:28:39,745 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:28:39,745 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 402 transitions. [2019-09-20 13:28:39,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-09-20 13:28:39,748 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:28:39,749 INFO L407 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] [2019-09-20 13:28:39,749 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:28:39,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:28:39,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1192820603, now seen corresponding path program 1 times [2019-09-20 13:28:39,749 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:28:39,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:39,751 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:28:39,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:39,751 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:28:39,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-20 13:28:39,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-20 13:28:39,850 INFO L474 BasicCegarLoop]: Counterexample might be feasible [2019-09-20 13:28:39,879 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2019-09-20 13:28:39,881 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2019-09-20 13:28:39,883 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2019-09-20 13:28:39,883 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2019-09-20 13:28:39,884 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2019-09-20 13:28:39,884 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2019-09-20 13:28:39,885 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2019-09-20 13:28:39,885 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2019-09-20 13:28:39,886 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2019-09-20 13:28:39,886 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2019-09-20 13:28:39,887 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2019-09-20 13:28:39,887 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2019-09-20 13:28:39,887 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2019-09-20 13:28:39,888 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2019-09-20 13:28:39,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:28:39 BoogieIcfgContainer [2019-09-20 13:28:39,899 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:28:39,901 INFO L168 Benchmark]: Toolchain (without parser) took 4777.09 ms. Allocated memory was 131.1 MB in the beginning and 270.5 MB in the end (delta: 139.5 MB). Free memory was 86.8 MB in the beginning and 211.2 MB in the end (delta: -124.4 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB. [2019-09-20 13:28:39,902 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 131.1 MB. Free memory is still 104.8 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-09-20 13:28:39,903 INFO L168 Benchmark]: CACSL2BoogieTranslator took 318.02 ms. Allocated memory is still 131.1 MB. Free memory was 86.4 MB in the beginning and 76.2 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2019-09-20 13:28:39,904 INFO L168 Benchmark]: Boogie Preprocessor took 115.86 ms. Allocated memory was 131.1 MB in the beginning and 197.7 MB in the end (delta: 66.6 MB). Free memory was 76.2 MB in the beginning and 173.3 MB in the end (delta: -97.1 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. [2019-09-20 13:28:39,905 INFO L168 Benchmark]: RCFGBuilder took 401.09 ms. Allocated memory is still 197.7 MB. Free memory was 173.3 MB in the beginning and 153.3 MB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2019-09-20 13:28:39,906 INFO L168 Benchmark]: TraceAbstraction took 3937.82 ms. Allocated memory was 197.7 MB in the beginning and 270.5 MB in the end (delta: 72.9 MB). Free memory was 153.3 MB in the beginning and 211.2 MB in the end (delta: -57.9 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. [2019-09-20 13:28:39,910 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 131.1 MB. Free memory is still 104.8 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 318.02 ms. Allocated memory is still 131.1 MB. Free memory was 86.4 MB in the beginning and 76.2 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.86 ms. Allocated memory was 131.1 MB in the beginning and 197.7 MB in the end (delta: 66.6 MB). Free memory was 76.2 MB in the beginning and 173.3 MB in the end (delta: -97.1 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 401.09 ms. Allocated memory is still 197.7 MB. Free memory was 173.3 MB in the beginning and 153.3 MB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3937.82 ms. Allocated memory was 197.7 MB in the beginning and 270.5 MB in the end (delta: 72.9 MB). Free memory was 153.3 MB in the beginning and 211.2 MB in the end (delta: -57.9 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement * 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; VAL [\old(ldv_mutex)=4, \old(open_called)=3, ldv_mutex=1, open_called=0] [L74] int ldv_s_misc_fops_file_operations = 0; VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, ldv_s_misc_fops_file_operations=0, open_called=0] [L75] CALL my_init() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L69] open_called = 0 [L70] return 0; VAL [\old(ldv_mutex)=1, \old(open_called)=0, \result=0, ldv_mutex=1, open_called=0] [L75] RET my_init() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, ldv_s_misc_fops_file_operations=0, my_init()=0, open_called=0] [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=0, ldv_mutex=1, ldv_s_misc_fops_file_operations=0, open_called=0] [L81] COND TRUE ldv_s_misc_fops_file_operations==0 VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=0, ldv_mutex=1, ldv_s_misc_fops_file_operations=0, open_called=0] [L82] CALL misc_open() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L57] COND TRUE __VERIFIER_nondet_int() [L59] return 1; VAL [\old(ldv_mutex)=1, \old(open_called)=0, \result=1, ldv_mutex=1, open_called=0] [L82] RET misc_open() VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=0, ldv_mutex=1, ldv_s_misc_fops_file_operations=0, misc_open()=1, open_called=0] [L83] ldv_s_misc_fops_file_operations++ VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=0, ldv_mutex=1, ldv_s_misc_fops_file_operations=1, open_called=0] [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=1, ldv_mutex=1, ldv_s_misc_fops_file_operations=1, open_called=0] [L89] COND TRUE ldv_s_misc_fops_file_operations==1 VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=1, ldv_mutex=1, ldv_s_misc_fops_file_operations=1, open_called=0] [L90] CALL misc_read() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L52] return 0; VAL [\old(ldv_mutex)=1, \old(open_called)=0, \result=0, ldv_mutex=1, open_called=0] [L90] RET misc_read() VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=1, ldv_mutex=1, ldv_s_misc_fops_file_operations=1, misc_read()=0, open_called=0] [L91] ldv_s_misc_fops_file_operations++ VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=1, ldv_mutex=1, ldv_s_misc_fops_file_operations=2, open_called=0] [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: [L96] case 2: VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=2, ldv_mutex=1, ldv_s_misc_fops_file_operations=2, open_called=0] [L97] COND TRUE ldv_s_misc_fops_file_operations==2 VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=2, ldv_mutex=1, ldv_s_misc_fops_file_operations=2, open_called=0] [L98] CALL misc_llseek() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L48] return 0; VAL [\old(ldv_mutex)=1, \old(open_called)=0, \result=0, ldv_mutex=1, open_called=0] [L98] RET misc_llseek() VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=2, ldv_mutex=1, ldv_s_misc_fops_file_operations=2, misc_llseek()=0, open_called=0] [L99] ldv_s_misc_fops_file_operations++ VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=2, ldv_mutex=1, ldv_s_misc_fops_file_operations=3, open_called=0] [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: [L96] case 2: [L104] case 3: VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=3, ldv_mutex=1, ldv_s_misc_fops_file_operations=3, open_called=0] [L105] COND TRUE ldv_s_misc_fops_file_operations==3 VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=3, ldv_mutex=1, ldv_s_misc_fops_file_operations=3, open_called=0] [L106] CALL misc_release() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L34] COND FALSE !(\read(open_called)) VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L41] CALL mutex_lock() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L16] (ldv_mutex == 1) ? 0 : __blast_assert() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L17] ldv_mutex = 2 VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=2, open_called=0] [L41] RET mutex_lock() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=2, open_called=0] [L42] CALL mutex_lock() VAL [\old(ldv_mutex)=2, \old(open_called)=0, ldv_mutex=2, open_called=0] [L16] (ldv_mutex == 1) ? 0 : __blast_assert() VAL [\old(ldv_mutex)=2, \old(open_called)=0, ldv_mutex=2, open_called=0] [L16] CALL __blast_assert() VAL [\old(ldv_mutex)=2, \old(open_called)=0, ldv_mutex=2, open_called=0] [L4] __VERIFIER_error() VAL [\old(ldv_mutex)=2, \old(open_called)=0, ldv_mutex=2, open_called=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 74 locations, 1 error locations. UNSAFE Result, 3.8s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 2.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 488 SDtfs, 410 SDslu, 1099 SDs, 0 SdLazy, 285 SolverSat, 95 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 99 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=279occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9437423687423688 AbsIntWeakeningRatio, 0.3717948717948718 AbsIntAvgWeakeningVarsNumRemoved, 1.1282051282051282 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 62 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 256 NumberOfCodeBlocks, 256 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 187 ConstructedInterpolants, 0 QuantifiedInterpolants, 11127 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 12/18 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...