/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/systemc/pc_sfifo_2.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 07:07:03,820 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 07:07:03,823 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 07:07:03,866 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-22 07:07:03,896 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 07:07:03,900 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 07:07:03,902 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 07:07:03,904 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 07:07:03,920 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 07:07:03,921 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 07:07:03,927 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 07:07:03,933 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 07:07:03,934 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 07:07:03,937 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 07:07:03,938 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 07:07:03,939 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 07:07:03,942 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 07:07:03,952 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 07:07:03,953 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 07:07:03,954 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 07:07:03,955 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 07:07:03,982 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 07:07:03,983 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 07:07:03,984 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 07:07:03,985 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 07:07:03,985 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 07:07:03,985 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 07:07:03,986 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 07:07:03,986 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 07:07:03,986 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 07:07:03,987 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 07:07:03,987 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 07:07:03,987 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 07:07:03,987 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 07:07:03,988 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 07:07:03,988 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 07:07:03,988 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 07:07:03,989 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 07:07:03,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 07:07:03,989 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 07:07:03,990 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 07:07:03,990 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 07:07:03,990 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 07:07:03,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 07:07:03,991 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 07:07:03,991 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 07:07:03,991 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 07:07:04,400 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 07:07:04,430 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 07:07:04,433 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 07:07:04,435 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 07:07:04,436 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 07:07:04,437 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/pc_sfifo_2.cil-2.c [2020-12-22 07:07:04,528 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76c6ac7ed/a921724223ff4ac09e1b21e9e230ca99/FLAGcb14e6059 [2020-12-22 07:07:05,200 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 07:07:05,201 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/pc_sfifo_2.cil-2.c [2020-12-22 07:07:05,218 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76c6ac7ed/a921724223ff4ac09e1b21e9e230ca99/FLAGcb14e6059 [2020-12-22 07:07:05,524 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76c6ac7ed/a921724223ff4ac09e1b21e9e230ca99 [2020-12-22 07:07:05,528 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 07:07:05,531 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 07:07:05,533 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 07:07:05,534 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 07:07:05,537 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 07:07:05,539 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:07:05" (1/1) ... [2020-12-22 07:07:05,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@681bffc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:07:05, skipping insertion in model container [2020-12-22 07:07:05,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:07:05" (1/1) ... [2020-12-22 07:07:05,550 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 07:07:05,608 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 07:07:05,753 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/pc_sfifo_2.cil-2.c[338,351] [2020-12-22 07:07:05,816 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:07:05,829 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 07:07:05,843 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/pc_sfifo_2.cil-2.c[338,351] [2020-12-22 07:07:05,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:07:05,894 INFO L208 MainTranslator]: Completed translation [2020-12-22 07:07:05,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:07:05 WrapperNode [2020-12-22 07:07:05,895 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 07:07:05,896 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 07:07:05,897 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 07:07:05,897 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 07:07:05,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:07:05" (1/1) ... [2020-12-22 07:07:05,915 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:07:05" (1/1) ... [2020-12-22 07:07:05,949 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 07:07:05,952 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 07:07:05,953 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 07:07:05,953 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 07:07:05,966 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:07:05" (1/1) ... [2020-12-22 07:07:05,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:07:05" (1/1) ... [2020-12-22 07:07:05,970 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:07:05" (1/1) ... [2020-12-22 07:07:05,970 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:07:05" (1/1) ... [2020-12-22 07:07:05,977 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:07:05" (1/1) ... [2020-12-22 07:07:05,985 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:07:05" (1/1) ... [2020-12-22 07:07:05,988 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:07:05" (1/1) ... [2020-12-22 07:07:05,992 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 07:07:05,993 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 07:07:05,993 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 07:07:05,993 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 07:07:05,994 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:07:05" (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 [2020-12-22 07:07:06,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 07:07:06,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 07:07:06,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 07:07:06,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 07:07:06,711 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 07:07:06,711 INFO L299 CfgBuilder]: Removed 60 assume(true) statements. [2020-12-22 07:07:06,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:07:06 BoogieIcfgContainer [2020-12-22 07:07:06,713 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 07:07:06,715 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 07:07:06,715 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 07:07:06,719 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 07:07:06,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:07:05" (1/3) ... [2020-12-22 07:07:06,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c2cea70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:07:06, skipping insertion in model container [2020-12-22 07:07:06,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:07:05" (2/3) ... [2020-12-22 07:07:06,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c2cea70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:07:06, skipping insertion in model container [2020-12-22 07:07:06,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:07:06" (3/3) ... [2020-12-22 07:07:06,723 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-2.c [2020-12-22 07:07:06,729 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 07:07:06,735 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-12-22 07:07:06,755 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-22 07:07:06,788 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 07:07:06,788 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 07:07:06,788 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 07:07:06,788 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 07:07:06,789 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 07:07:06,789 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 07:07:06,789 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 07:07:06,789 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 07:07:06,809 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states. [2020-12-22 07:07:06,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 07:07:06,818 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:07:06,819 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, 1, 1, 1, 1] [2020-12-22 07:07:06,820 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:07:06,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:07:06,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1129554405, now seen corresponding path program 1 times [2020-12-22 07:07:06,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:07:06,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448978511] [2020-12-22 07:07:06,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:07:06,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:07:07,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:07:07,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448978511] [2020-12-22 07:07:07,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:07:07,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:07:07,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773763640] [2020-12-22 07:07:07,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:07:07,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:07:07,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:07:07,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:07:07,158 INFO L87 Difference]: Start difference. First operand 96 states. Second operand 3 states. [2020-12-22 07:07:07,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:07:07,258 INFO L93 Difference]: Finished difference Result 272 states and 425 transitions. [2020-12-22 07:07:07,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:07:07,260 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-12-22 07:07:07,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:07:07,275 INFO L225 Difference]: With dead ends: 272 [2020-12-22 07:07:07,275 INFO L226 Difference]: Without dead ends: 178 [2020-12-22 07:07:07,279 INFO L677 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 [2020-12-22 07:07:07,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-12-22 07:07:07,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 172. [2020-12-22 07:07:07,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-12-22 07:07:07,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 252 transitions. [2020-12-22 07:07:07,349 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 252 transitions. Word has length 33 [2020-12-22 07:07:07,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:07:07,350 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 252 transitions. [2020-12-22 07:07:07,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:07:07,350 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 252 transitions. [2020-12-22 07:07:07,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 07:07:07,352 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:07:07,352 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, 1, 1, 1, 1] [2020-12-22 07:07:07,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 07:07:07,353 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:07:07,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:07:07,354 INFO L82 PathProgramCache]: Analyzing trace with hash 875581448, now seen corresponding path program 1 times [2020-12-22 07:07:07,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:07:07,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132500846] [2020-12-22 07:07:07,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:07:07,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:07:07,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:07:07,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132500846] [2020-12-22 07:07:07,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:07:07,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:07:07,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706062316] [2020-12-22 07:07:07,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:07:07,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:07:07,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:07:07,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:07:07,435 INFO L87 Difference]: Start difference. First operand 172 states and 252 transitions. Second operand 5 states. [2020-12-22 07:07:07,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:07:07,553 INFO L93 Difference]: Finished difference Result 548 states and 803 transitions. [2020-12-22 07:07:07,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:07:07,554 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-12-22 07:07:07,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:07:07,558 INFO L225 Difference]: With dead ends: 548 [2020-12-22 07:07:07,559 INFO L226 Difference]: Without dead ends: 406 [2020-12-22 07:07:07,561 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:07:07,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2020-12-22 07:07:07,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 178. [2020-12-22 07:07:07,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-12-22 07:07:07,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 256 transitions. [2020-12-22 07:07:07,609 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 256 transitions. Word has length 33 [2020-12-22 07:07:07,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:07:07,609 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 256 transitions. [2020-12-22 07:07:07,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:07:07,610 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 256 transitions. [2020-12-22 07:07:07,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 07:07:07,616 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:07:07,616 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, 1, 1, 1, 1] [2020-12-22 07:07:07,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 07:07:07,617 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:07:07,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:07:07,618 INFO L82 PathProgramCache]: Analyzing trace with hash 57932998, now seen corresponding path program 1 times [2020-12-22 07:07:07,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:07:07,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618071214] [2020-12-22 07:07:07,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:07:07,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:07:07,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:07:07,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618071214] [2020-12-22 07:07:07,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:07:07,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:07:07,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818727178] [2020-12-22 07:07:07,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:07:07,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:07:07,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:07:07,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:07:07,745 INFO L87 Difference]: Start difference. First operand 178 states and 256 transitions. Second operand 4 states. [2020-12-22 07:07:07,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:07:07,908 INFO L93 Difference]: Finished difference Result 472 states and 669 transitions. [2020-12-22 07:07:07,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:07:07,909 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-12-22 07:07:07,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:07:07,912 INFO L225 Difference]: With dead ends: 472 [2020-12-22 07:07:07,912 INFO L226 Difference]: Without dead ends: 335 [2020-12-22 07:07:07,913 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:07:07,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-12-22 07:07:07,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 248. [2020-12-22 07:07:07,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-12-22 07:07:07,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 344 transitions. [2020-12-22 07:07:07,935 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 344 transitions. Word has length 33 [2020-12-22 07:07:07,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:07:07,935 INFO L481 AbstractCegarLoop]: Abstraction has 248 states and 344 transitions. [2020-12-22 07:07:07,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:07:07,936 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 344 transitions. [2020-12-22 07:07:07,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 07:07:07,938 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:07:07,938 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, 1, 1, 1, 1] [2020-12-22 07:07:07,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 07:07:07,938 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:07:07,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:07:07,939 INFO L82 PathProgramCache]: Analyzing trace with hash 316098436, now seen corresponding path program 1 times [2020-12-22 07:07:07,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:07:07,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622666026] [2020-12-22 07:07:07,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:07:07,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 07:07:07,963 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 07:07:07,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 07:07:07,997 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 07:07:08,045 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 07:07:08,045 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 07:07:08,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 07:07:08,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 07:07:08 BoogieIcfgContainer [2020-12-22 07:07:08,157 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 07:07:08,157 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 07:07:08,157 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 07:07:08,158 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 07:07:08,158 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:07:06" (3/4) ... [2020-12-22 07:07:08,161 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-22 07:07:08,267 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/systemc/pc_sfifo_2.cil-2.c-witness.graphml [2020-12-22 07:07:08,267 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 07:07:08,272 INFO L168 Benchmark]: Toolchain (without parser) took 2738.28 ms. Allocated memory is still 158.3 MB. Free memory was 133.6 MB in the beginning and 113.5 MB in the end (delta: 20.1 MB). Peak memory consumption was 21.6 MB. Max. memory is 8.0 GB. [2020-12-22 07:07:08,272 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 158.3 MB. Free memory is still 130.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 07:07:08,273 INFO L168 Benchmark]: CACSL2BoogieTranslator took 362.15 ms. Allocated memory is still 158.3 MB. Free memory was 133.3 MB in the beginning and 120.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-12-22 07:07:08,274 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.74 ms. Allocated memory is still 158.3 MB. Free memory was 120.8 MB in the beginning and 118.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 07:07:08,275 INFO L168 Benchmark]: Boogie Preprocessor took 39.67 ms. Allocated memory is still 158.3 MB. Free memory was 118.5 MB in the beginning and 116.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 07:07:08,277 INFO L168 Benchmark]: RCFGBuilder took 720.45 ms. Allocated memory is still 158.3 MB. Free memory was 116.7 MB in the beginning and 118.7 MB in the end (delta: -2.0 MB). Peak memory consumption was 13.2 MB. Max. memory is 8.0 GB. [2020-12-22 07:07:08,278 INFO L168 Benchmark]: TraceAbstraction took 1441.62 ms. Allocated memory is still 158.3 MB. Free memory was 118.2 MB in the beginning and 119.8 MB in the end (delta: -1.6 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 07:07:08,280 INFO L168 Benchmark]: Witness Printer took 110.29 ms. Allocated memory is still 158.3 MB. Free memory was 119.8 MB in the beginning and 113.5 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 8.0 GB. [2020-12-22 07:07:08,284 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 158.3 MB. Free memory is still 130.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 362.15 ms. Allocated memory is still 158.3 MB. Free memory was 133.3 MB in the beginning and 120.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 52.74 ms. Allocated memory is still 158.3 MB. Free memory was 120.8 MB in the beginning and 118.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 39.67 ms. Allocated memory is still 158.3 MB. Free memory was 118.5 MB in the beginning and 116.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 720.45 ms. Allocated memory is still 158.3 MB. Free memory was 116.7 MB in the beginning and 118.7 MB in the end (delta: -2.0 MB). Peak memory consumption was 13.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1441.62 ms. Allocated memory is still 158.3 MB. Free memory was 118.2 MB in the beginning and 119.8 MB in the end (delta: -1.6 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 110.29 ms. Allocated memory is still 158.3 MB. Free memory was 119.8 MB in the beginning and 113.5 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L17] int q_buf_0 ; [L18] int q_free ; [L19] int q_read_ev ; [L20] int q_write_ev ; [L21] int q_req_up ; [L22] int q_ev ; [L43] int p_num_write ; [L44] int p_last_write ; [L45] int p_dw_st ; [L46] int p_dw_pc ; [L47] int p_dw_i ; [L48] int c_num_read ; [L49] int c_last_read ; [L50] int c_dr_st ; [L51] int c_dr_pc ; [L52] int c_dr_i ; [L156] static int a_t ; VAL [a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0] [L458] int __retres1 ; [L444] q_free = 1 [L445] q_write_ev = 2 [L446] q_read_ev = q_write_ev [L447] p_num_write = 0 [L448] p_dw_pc = 0 [L449] p_dw_i = 1 [L450] c_num_read = 0 [L451] c_dr_pc = 0 [L452] c_dr_i = 1 VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L398] int kernel_st ; [L399] int tmp ; [L403] kernel_st = 0 VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L214] COND FALSE !((int )q_req_up == 1) VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L229] COND TRUE (int )p_dw_i == 1 [L230] p_dw_st = 0 VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L234] COND TRUE (int )c_dr_i == 1 [L235] c_dr_st = 0 VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L267] COND FALSE !((int )q_read_ev == 0) VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L272] COND FALSE !((int )q_write_ev == 0) VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L300] int tmp ; [L301] int tmp___0 ; [L54] int __retres1 ; VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L57] COND FALSE !((int )p_dw_pc == 1) VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L67] __retres1 = 0 VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L69] return (__retres1); VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L305] tmp = is_do_write_p_triggered() [L307] COND FALSE !(\read(tmp)) VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L73] int __retres1 ; VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L76] COND FALSE !((int )c_dr_pc == 1) VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L86] __retres1 = 0 VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L88] return (__retres1); VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L313] tmp___0 = is_do_read_c_triggered() [L315] COND FALSE !(\read(tmp___0)) VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L285] COND FALSE !((int )q_read_ev == 1) VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L290] COND FALSE !((int )q_write_ev == 1) VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L411] COND TRUE 1 VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L414] kernel_st = 1 [L325] int tmp ; [L326] int tmp___0 ; [L327] int tmp___1 ; VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L331] COND TRUE 1 VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L244] int __retres1 ; VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L247] COND TRUE (int )p_dw_st == 0 [L248] __retres1 = 1 VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L260] return (__retres1); VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L334] tmp___1 = exists_runnable_thread() [L336] COND TRUE \read(tmp___1) VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L341] COND TRUE (int )p_dw_st == 0 [L343] tmp = __VERIFIER_nondet_int() [L345] COND FALSE !(\read(tmp)) VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L12] reach_error() VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 96 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 397 SDtfs, 846 SDslu, 863 SDs, 0 SdLazy, 101 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=248occurred in iteration=3, 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, 3 MinimizatonAttempts, 321 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 132 NumberOfCodeBlocks, 132 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 4896 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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...