/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/mutex_lock_int.c_1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 05:15:38,459 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 05:15:38,462 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 05:15:38,502 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-07 05:15:38,515 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 05:15:38,517 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 05:15:38,518 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 05:15:38,519 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 05:15:38,520 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 05:15:38,522 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 05:15:38,524 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 05:15:38,526 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 05:15:38,528 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 05:15:38,532 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 05:15:38,534 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 05:15:38,536 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 05:15:38,553 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 05:15:38,572 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 05:15:38,573 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 05:15:38,575 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 05:15:38,576 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 05:15:38,598 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 05:15:38,599 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 05:15:38,604 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 05:15:38,604 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 05:15:38,604 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 05:15:38,605 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 05:15:38,605 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 05:15:38,605 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 05:15:38,605 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 05:15:38,606 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 05:15:38,607 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 05:15:38,607 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 05:15:38,607 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 05:15:38,608 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 05:15:38,608 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 05:15:38,608 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 05:15:38,608 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 05:15:38,609 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 05:15:38,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 05:15:38,609 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 05:15:38,609 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 05:15:38,610 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 05:15:38,610 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-11-07 05:15:39,049 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 05:15:39,076 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 05:15:39,079 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 05:15:39,080 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 05:15:39,081 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 05:15:39,082 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/mutex_lock_int.c_1.i [2020-11-07 05:15:39,172 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce37965bb/9605579b995c4ae8a8474dc43a26f6eb/FLAG107a41b2a [2020-11-07 05:15:39,771 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 05:15:39,771 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/mutex_lock_int.c_1.i [2020-11-07 05:15:39,778 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce37965bb/9605579b995c4ae8a8474dc43a26f6eb/FLAG107a41b2a [2020-11-07 05:15:40,157 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce37965bb/9605579b995c4ae8a8474dc43a26f6eb [2020-11-07 05:15:40,160 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 05:15:40,167 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 05:15:40,172 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 05:15:40,172 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 05:15:40,176 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 05:15:40,177 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:15:40" (1/1) ... [2020-11-07 05:15:40,180 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1724b890 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:15:40, skipping insertion in model container [2020-11-07 05:15:40,181 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:15:40" (1/1) ... [2020-11-07 05:15:40,189 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 05:15:40,204 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 05:15:40,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 05:15:40,357 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 05:15:40,375 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 05:15:40,392 INFO L208 MainTranslator]: Completed translation [2020-11-07 05:15:40,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:15:40 WrapperNode [2020-11-07 05:15:40,393 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 05:15:40,394 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 05:15:40,394 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 05:15:40,394 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 05:15:40,407 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:15:40" (1/1) ... [2020-11-07 05:15:40,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:15:40" (1/1) ... [2020-11-07 05:15:40,415 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:15:40" (1/1) ... [2020-11-07 05:15:40,415 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:15:40" (1/1) ... [2020-11-07 05:15:40,421 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:15:40" (1/1) ... [2020-11-07 05:15:40,423 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:15:40" (1/1) ... [2020-11-07 05:15:40,424 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:15:40" (1/1) ... [2020-11-07 05:15:40,426 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 05:15:40,427 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 05:15:40,428 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 05:15:40,428 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 05:15:40,428 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:15:40" (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 [2020-11-07 05:15:40,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 05:15:40,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 05:15:40,511 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 05:15:40,511 INFO L138 BoogieDeclarations]: Found implementation of procedure err [2020-11-07 05:15:40,511 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-11-07 05:15:40,511 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-11-07 05:15:40,512 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 05:15:40,512 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 05:15:40,512 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 05:15:40,512 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 05:15:40,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 05:15:40,513 INFO L130 BoogieDeclarations]: Found specification of procedure err [2020-11-07 05:15:40,513 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-11-07 05:15:40,513 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 05:15:40,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 05:15:40,514 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-11-07 05:15:40,515 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 05:15:40,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 05:15:40,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 05:15:40,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 05:15:40,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 05:15:40,896 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 05:15:40,897 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-11-07 05:15:40,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:15:40 BoogieIcfgContainer [2020-11-07 05:15:40,899 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 05:15:40,901 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 05:15:40,901 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 05:15:40,905 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 05:15:40,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 05:15:40" (1/3) ... [2020-11-07 05:15:40,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48b0639b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:15:40, skipping insertion in model container [2020-11-07 05:15:40,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:15:40" (2/3) ... [2020-11-07 05:15:40,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48b0639b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:15:40, skipping insertion in model container [2020-11-07 05:15:40,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:15:40" (3/3) ... [2020-11-07 05:15:40,908 INFO L111 eAbstractionObserver]: Analyzing ICFG mutex_lock_int.c_1.i [2020-11-07 05:15:40,938 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 05:15:40,944 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 05:15:40,963 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 05:15:40,988 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 05:15:40,988 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 05:15:40,988 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-07 05:15:40,989 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 05:15:40,989 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 05:15:40,989 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 05:15:40,989 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 05:15:40,989 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 05:15:41,005 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2020-11-07 05:15:41,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-07 05:15:41,015 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:15:41,016 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] [2020-11-07 05:15:41,016 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:15:41,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:15:41,023 INFO L82 PathProgramCache]: Analyzing trace with hash -512414827, now seen corresponding path program 1 times [2020-11-07 05:15:41,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:15:41,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [802531250] [2020-11-07 05:15:41,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:15:41,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:41,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:15:41,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:41,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:15:41,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [802531250] [2020-11-07 05:15:41,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:15:41,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-07 05:15:41,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842457897] [2020-11-07 05:15:41,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-07 05:15:41,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:15:41,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-07 05:15:41,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-07 05:15:41,548 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 7 states. [2020-11-07 05:15:41,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:15:41,915 INFO L93 Difference]: Finished difference Result 70 states and 75 transitions. [2020-11-07 05:15:41,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-07 05:15:41,917 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-11-07 05:15:41,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:15:41,925 INFO L225 Difference]: With dead ends: 70 [2020-11-07 05:15:41,925 INFO L226 Difference]: Without dead ends: 31 [2020-11-07 05:15:41,929 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-11-07 05:15:41,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-07 05:15:41,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-11-07 05:15:41,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-07 05:15:41,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 30 transitions. [2020-11-07 05:15:41,977 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 30 transitions. Word has length 22 [2020-11-07 05:15:41,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:15:41,977 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 30 transitions. [2020-11-07 05:15:41,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-07 05:15:41,977 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 30 transitions. [2020-11-07 05:15:41,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-07 05:15:41,979 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:15:41,979 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] [2020-11-07 05:15:41,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 05:15:41,979 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:15:41,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:15:41,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1063002447, now seen corresponding path program 1 times [2020-11-07 05:15:41,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:15:41,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1629743643] [2020-11-07 05:15:41,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:15:42,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:42,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:15:42,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:42,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:15:42,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:42,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:15:42,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1629743643] [2020-11-07 05:15:42,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:15:42,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-07 05:15:42,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381333051] [2020-11-07 05:15:42,226 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-07 05:15:42,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:15:42,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-07 05:15:42,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-11-07 05:15:42,228 INFO L87 Difference]: Start difference. First operand 31 states and 30 transitions. Second operand 10 states. [2020-11-07 05:15:42,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:15:42,732 INFO L93 Difference]: Finished difference Result 31 states and 30 transitions. [2020-11-07 05:15:42,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-07 05:15:42,733 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2020-11-07 05:15:42,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:15:42,733 INFO L225 Difference]: With dead ends: 31 [2020-11-07 05:15:42,734 INFO L226 Difference]: Without dead ends: 0 [2020-11-07 05:15:42,736 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2020-11-07 05:15:42,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-07 05:15:42,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-07 05:15:42,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-07 05:15:42,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-07 05:15:42,737 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2020-11-07 05:15:42,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:15:42,737 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-07 05:15:42,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-07 05:15:42,738 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-07 05:15:42,738 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-07 05:15:42,738 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 05:15:42,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-07 05:15:43,491 INFO L269 CegarLoopResult]: At program point reach_errorEXIT(line 3) the Hoare annotation is: true [2020-11-07 05:15:43,492 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-11-07 05:15:43,492 INFO L269 CegarLoopResult]: At program point reach_errorFINAL(line 3) the Hoare annotation is: true [2020-11-07 05:15:43,492 INFO L269 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) the Hoare annotation is: true [2020-11-07 05:15:43,493 INFO L262 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (or (not (= (select (select |old(#memory_int)| |mutex_unlock_#in~b.base|) |mutex_unlock_#in~b.offset|) 1)) (and (= |#memory_int| |old(#memory_int)|) (= (select (select |#memory_int| mutex_unlock_~b.base) mutex_unlock_~b.offset) 1))) [2020-11-07 05:15:43,493 INFO L262 CegarLoopResult]: At program point L26-1(line 26) the Hoare annotation is: (or (and (= |#memory_int| |old(#memory_int)|) (= |mutex_unlock_#t~mem8| 1) (= (select (select |#memory_int| mutex_unlock_~b.base) mutex_unlock_~b.offset) 1)) (not (= (select (select |old(#memory_int)| |mutex_unlock_#in~b.base|) |mutex_unlock_#in~b.offset|) 1))) [2020-11-07 05:15:43,494 INFO L262 CegarLoopResult]: At program point L26-2(line 26) the Hoare annotation is: (not (= (select (select |old(#memory_int)| |mutex_unlock_#in~b.base|) |mutex_unlock_#in~b.offset|) 1)) [2020-11-07 05:15:43,494 INFO L262 CegarLoopResult]: At program point L26-3(line 26) the Hoare annotation is: (not (= (select (select |old(#memory_int)| |mutex_unlock_#in~b.base|) |mutex_unlock_#in~b.offset|) 1)) [2020-11-07 05:15:43,494 INFO L269 CegarLoopResult]: At program point L26-5(line 26) the Hoare annotation is: true [2020-11-07 05:15:43,494 INFO L269 CegarLoopResult]: At program point L26-6(line 26) the Hoare annotation is: true [2020-11-07 05:15:43,495 INFO L262 CegarLoopResult]: At program point mutex_unlockENTRY(lines 24 28) the Hoare annotation is: (or (= |#memory_int| |old(#memory_int)|) (not (= (select (select |old(#memory_int)| |mutex_unlock_#in~b.base|) |mutex_unlock_#in~b.offset|) 1))) [2020-11-07 05:15:43,495 INFO L269 CegarLoopResult]: At program point mutex_unlockEXIT(lines 24 28) the Hoare annotation is: true [2020-11-07 05:15:43,496 INFO L269 CegarLoopResult]: At program point mutex_unlockFINAL(lines 24 28) the Hoare annotation is: true [2020-11-07 05:15:43,496 INFO L269 CegarLoopResult]: At program point L3-2(line 3) the Hoare annotation is: true [2020-11-07 05:15:43,498 INFO L269 CegarLoopResult]: At program point L3-3(line 3) the Hoare annotation is: true [2020-11-07 05:15:43,498 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 05:15:43,499 INFO L269 CegarLoopResult]: At program point L3-4(line 3) the Hoare annotation is: true [2020-11-07 05:15:43,499 INFO L269 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-11-07 05:15:43,499 INFO L269 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2020-11-07 05:15:43,499 INFO L262 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(#NULL.base)| |#NULL.base|) (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#t~string6.offset)| |#t~string6.offset|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |old(#t~string4.offset)| |#t~string4.offset|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-11-07 05:15:43,499 INFO L269 CegarLoopResult]: At program point L3(line 3) the Hoare annotation is: true [2020-11-07 05:15:43,500 INFO L269 CegarLoopResult]: At program point L3-1(line 3) the Hoare annotation is: true [2020-11-07 05:15:43,500 INFO L269 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-11-07 05:15:43,501 INFO L269 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: true [2020-11-07 05:15:43,502 INFO L269 CegarLoopResult]: At program point errEXIT(lines 15 16) the Hoare annotation is: true [2020-11-07 05:15:43,502 INFO L269 CegarLoopResult]: At program point errENTRY(lines 15 16) the Hoare annotation is: true [2020-11-07 05:15:43,502 INFO L269 CegarLoopResult]: At program point errFINAL(lines 15 16) the Hoare annotation is: true [2020-11-07 05:15:43,502 INFO L262 CegarLoopResult]: At program point mutex_lockENTRY(lines 18 22) the Hoare annotation is: (or (not (= (select (select |old(#memory_int)| |mutex_lock_#in~a.base|) |mutex_lock_#in~a.offset|) 0)) (= |#memory_int| |old(#memory_int)|)) [2020-11-07 05:15:43,502 INFO L262 CegarLoopResult]: At program point mutex_lockEXIT(lines 18 22) the Hoare annotation is: (or (not (= (select (select |old(#memory_int)| |mutex_lock_#in~a.base|) |mutex_lock_#in~a.offset|) 0)) (and (= |mutex_lock_#in~a.base| mutex_lock_~a.base) (= |mutex_lock_#in~a.offset| mutex_lock_~a.offset) (= (select (select |#memory_int| |mutex_lock_#in~a.base|) |mutex_lock_#in~a.offset|) 1))) [2020-11-07 05:15:43,503 INFO L262 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (or (not (= (select (select |old(#memory_int)| |mutex_lock_#in~a.base|) |mutex_lock_#in~a.offset|) 0)) (and (= |mutex_lock_#in~a.base| mutex_lock_~a.base) (= |mutex_lock_#in~a.offset| mutex_lock_~a.offset) (= |#memory_int| |old(#memory_int)|))) [2020-11-07 05:15:43,503 INFO L262 CegarLoopResult]: At program point L20-1(line 20) the Hoare annotation is: (or (not (= (select (select |old(#memory_int)| |mutex_lock_#in~a.base|) |mutex_lock_#in~a.offset|) 0)) (and (= |mutex_lock_#t~mem7| 0) (= |mutex_lock_#in~a.base| mutex_lock_~a.base) (= |mutex_lock_#in~a.offset| mutex_lock_~a.offset) (= |#memory_int| |old(#memory_int)|))) [2020-11-07 05:15:43,508 INFO L262 CegarLoopResult]: At program point L20-2(line 20) the Hoare annotation is: (not (= (select (select |old(#memory_int)| |mutex_lock_#in~a.base|) |mutex_lock_#in~a.offset|) 0)) [2020-11-07 05:15:43,508 INFO L262 CegarLoopResult]: At program point L20-3(line 20) the Hoare annotation is: (not (= (select (select |old(#memory_int)| |mutex_lock_#in~a.base|) |mutex_lock_#in~a.offset|) 0)) [2020-11-07 05:15:43,509 INFO L262 CegarLoopResult]: At program point L20-5(line 20) the Hoare annotation is: (or (not (= (select (select |old(#memory_int)| |mutex_lock_#in~a.base|) |mutex_lock_#in~a.offset|) 0)) (and (= |mutex_lock_#t~mem7| 0) (= |mutex_lock_#in~a.base| mutex_lock_~a.base) (= |mutex_lock_#in~a.offset| mutex_lock_~a.offset) (= |#memory_int| |old(#memory_int)|))) [2020-11-07 05:15:43,509 INFO L262 CegarLoopResult]: At program point L20-6(line 20) the Hoare annotation is: (or (not (= (select (select |old(#memory_int)| |mutex_lock_#in~a.base|) |mutex_lock_#in~a.offset|) 0)) (and (= |mutex_lock_#in~a.base| mutex_lock_~a.base) (= |mutex_lock_#in~a.offset| mutex_lock_~a.offset) (= |#memory_int| |old(#memory_int)|))) [2020-11-07 05:15:43,509 INFO L262 CegarLoopResult]: At program point mutex_lockFINAL(lines 18 22) the Hoare annotation is: (or (not (= (select (select |old(#memory_int)| |mutex_lock_#in~a.base|) |mutex_lock_#in~a.offset|) 0)) (and (= |mutex_lock_#in~a.base| mutex_lock_~a.base) (= |mutex_lock_#in~a.offset| mutex_lock_~a.offset) (= (select (select |#memory_int| |mutex_lock_#in~a.base|) |mutex_lock_#in~a.offset|) 1))) [2020-11-07 05:15:43,509 INFO L269 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-11-07 05:15:43,509 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 05:15:43,509 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-07 05:15:43,510 INFO L269 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-11-07 05:15:43,510 INFO L262 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: (= (select (select |#memory_int| |main_~#m~0.base|) |main_~#m~0.offset|) 0) [2020-11-07 05:15:43,510 INFO L262 CegarLoopResult]: At program point L32(line 32) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-11-07 05:15:43,510 INFO L269 CegarLoopResult]: At program point L32-1(line 32) the Hoare annotation is: true [2020-11-07 05:15:43,510 INFO L262 CegarLoopResult]: At program point mainENTRY(lines 30 42) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2020-11-07 05:15:43,510 INFO L269 CegarLoopResult]: At program point mainFINAL(lines 30 42) the Hoare annotation is: true [2020-11-07 05:15:43,511 INFO L269 CegarLoopResult]: At program point mainEXIT(lines 30 42) the Hoare annotation is: true [2020-11-07 05:15:43,511 INFO L269 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: true [2020-11-07 05:15:43,511 INFO L262 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: (= (select (select |#memory_int| |main_~#m~0.base|) |main_~#m~0.offset|) 1) [2020-11-07 05:15:43,529 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-07 05:15:43,531 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-07 05:15:43,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 05:15:43 BoogieIcfgContainer [2020-11-07 05:15:43,537 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 05:15:43,544 INFO L168 Benchmark]: Toolchain (without parser) took 3376.65 ms. Allocated memory was 151.0 MB in the beginning and 190.8 MB in the end (delta: 39.8 MB). Free memory was 128.1 MB in the beginning and 152.9 MB in the end (delta: -24.8 MB). Peak memory consumption was 102.2 MB. Max. memory is 8.0 GB. [2020-11-07 05:15:43,545 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 125.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 05:15:43,548 INFO L168 Benchmark]: CACSL2BoogieTranslator took 220.96 ms. Allocated memory is still 151.0 MB. Free memory was 127.5 MB in the beginning and 118.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2020-11-07 05:15:43,549 INFO L168 Benchmark]: Boogie Preprocessor took 32.77 ms. Allocated memory is still 151.0 MB. Free memory was 118.3 MB in the beginning and 116.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-07 05:15:43,550 INFO L168 Benchmark]: RCFGBuilder took 471.79 ms. Allocated memory is still 151.0 MB. Free memory was 116.8 MB in the beginning and 102.3 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-11-07 05:15:43,552 INFO L168 Benchmark]: TraceAbstraction took 2636.33 ms. Allocated memory was 151.0 MB in the beginning and 190.8 MB in the end (delta: 39.8 MB). Free memory was 101.9 MB in the beginning and 152.9 MB in the end (delta: -51.0 MB). Peak memory consumption was 76.0 MB. Max. memory is 8.0 GB. [2020-11-07 05:15:43,562 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 125.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 220.96 ms. Allocated memory is still 151.0 MB. Free memory was 127.5 MB in the beginning and 118.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 32.77 ms. Allocated memory is still 151.0 MB. Free memory was 118.3 MB in the beginning and 116.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 471.79 ms. Allocated memory is still 151.0 MB. Free memory was 116.8 MB in the beginning and 102.3 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2636.33 ms. Allocated memory was 151.0 MB in the beginning and 190.8 MB in the end (delta: 39.8 MB). Free memory was 101.9 MB in the beginning and 152.9 MB in the end (delta: -51.0 MB). Peak memory consumption was 76.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ProcedureContractResult [Line: 3]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 24]: Procedure Contract for mutex_unlock Derived contract for procedure mutex_unlock: 1 - ProcedureContractResult [Line: 15]: Procedure Contract for err Derived contract for procedure err: 1 - ProcedureContractResult [Line: 18]: Procedure Contract for mutex_lock [2020-11-07 05:15:43,582 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-07 05:15:43,583 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-07 05:15:43,583 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-07 05:15:43,584 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived contract for procedure mutex_lock: !(\old(unknown-#memory_int-unknown)[a][a] == 0) || ((a == a && a == a) && unknown-#memory_int-unknown[a][a] == 1) - ProcedureContractResult [Line: 30]: Procedure Contract for main Derived contract for procedure main: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 51 SDtfs, 48 SDslu, 107 SDs, 0 SdLazy, 227 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 48 LocationsWithAnnotation, 69 PreInvPairs, 82 NumberOfFragments, 314 HoareAnnotationTreeSize, 69 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 48 FomulaSimplificationsInter, 587 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 4884 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 correct! Received shutdown request...