/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 -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/locks/test_locks_15-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:31:05,675 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:31:05,678 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:31:05,717 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-23 20:31:05,730 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:31:05,731 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:31:05,733 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:31:05,734 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:31:05,735 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:31:05,736 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:31:05,738 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:31:05,752 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:31:05,754 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:31:05,759 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:31:05,761 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:31:05,762 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:31:05,772 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 20:31:05,791 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:31:05,793 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:31:05,795 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:31:05,796 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 20:31:05,822 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:31:05,822 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:31:05,826 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:31:05,826 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:31:05,827 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:31:05,827 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:31:05,827 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:31:05,827 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:31:05,828 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:31:05,828 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:31:05,829 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:31:05,829 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:31:05,830 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:31:05,830 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:31:05,831 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:31:05,831 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:31:05,832 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:31:05,832 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:31:05,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:31:05,833 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:31:05,833 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:31:05,833 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:31:05,833 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:31:06,218 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:31:06,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:31:06,278 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:31:06,280 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:31:06,280 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:31:06,281 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_15-1.c [2020-10-23 20:31:06,388 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa81da7ec/1c464c4498014270bdbadfd999df3fcf/FLAGf577b336b [2020-10-23 20:31:07,072 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:31:07,072 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_15-1.c [2020-10-23 20:31:07,083 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa81da7ec/1c464c4498014270bdbadfd999df3fcf/FLAGf577b336b [2020-10-23 20:31:07,457 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa81da7ec/1c464c4498014270bdbadfd999df3fcf [2020-10-23 20:31:07,460 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:31:07,470 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:31:07,476 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:31:07,477 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:31:07,482 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:31:07,483 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:31:07" (1/1) ... [2020-10-23 20:31:07,487 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4246a6eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:31:07, skipping insertion in model container [2020-10-23 20:31:07,487 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:31:07" (1/1) ... [2020-10-23 20:31:07,497 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:31:07,540 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:31:07,838 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:31:07,855 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:31:07,924 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:31:07,947 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:31:07,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:31:07 WrapperNode [2020-10-23 20:31:07,948 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:31:07,950 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:31:07,950 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:31:07,950 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:31:07,965 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:31:07" (1/1) ... [2020-10-23 20:31:07,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:31:07" (1/1) ... [2020-10-23 20:31:07,976 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:31:07" (1/1) ... [2020-10-23 20:31:07,976 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:31:07" (1/1) ... [2020-10-23 20:31:07,985 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:31:07" (1/1) ... [2020-10-23 20:31:07,995 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:31:07" (1/1) ... [2020-10-23 20:31:07,997 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:31:07" (1/1) ... [2020-10-23 20:31:08,002 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:31:08,004 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:31:08,004 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:31:08,004 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:31:08,005 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:31:07" (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 [2020-10-23 20:31:08,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:31:08,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:31:08,094 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:31:08,094 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:31:08,094 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:31:08,095 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:31:08,095 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:31:08,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:31:08,095 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 20:31:08,096 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:31:08,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:31:08,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:31:08,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:31:08,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:31:08,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:31:08,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:31:09,052 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:31:09,052 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-23 20:31:09,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:31:09 BoogieIcfgContainer [2020-10-23 20:31:09,056 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:31:09,060 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:31:09,060 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:31:09,066 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:31:09,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:31:07" (1/3) ... [2020-10-23 20:31:09,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2614fd44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:31:09, skipping insertion in model container [2020-10-23 20:31:09,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:31:07" (2/3) ... [2020-10-23 20:31:09,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2614fd44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:31:09, skipping insertion in model container [2020-10-23 20:31:09,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:31:09" (3/3) ... [2020-10-23 20:31:09,070 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_15-1.c [2020-10-23 20:31:09,082 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:31:09,087 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 20:31:09,099 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 20:31:09,120 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:31:09,120 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:31:09,120 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:31:09,121 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:31:09,121 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:31:09,121 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:31:09,121 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:31:09,121 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:31:09,141 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states. [2020-10-23 20:31:09,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-23 20:31:09,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:31:09,156 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:31:09,157 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:31:09,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:31:09,164 INFO L82 PathProgramCache]: Analyzing trace with hash -242489263, now seen corresponding path program 1 times [2020-10-23 20:31:09,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:31:09,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931585378] [2020-10-23 20:31:09,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:31:09,248 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:31:09,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:09,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:31:09,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:09,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:31:09,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931585378] [2020-10-23 20:31:09,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:31:09,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:31:09,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483124958] [2020-10-23 20:31:09,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:31:09,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:31:09,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:31:09,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:31:09,710 INFO L87 Difference]: Start difference. First operand 180 states. Second operand 4 states. [2020-10-23 20:31:10,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:31:10,751 INFO L93 Difference]: Finished difference Result 379 states and 522 transitions. [2020-10-23 20:31:10,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 20:31:10,753 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 112 [2020-10-23 20:31:10,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:31:10,768 INFO L225 Difference]: With dead ends: 379 [2020-10-23 20:31:10,768 INFO L226 Difference]: Without dead ends: 264 [2020-10-23 20:31:10,773 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 20:31:10,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-10-23 20:31:10,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 263. [2020-10-23 20:31:10,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-10-23 20:31:10,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 349 transitions. [2020-10-23 20:31:10,904 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 349 transitions. Word has length 112 [2020-10-23 20:31:10,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:31:10,905 INFO L481 AbstractCegarLoop]: Abstraction has 263 states and 349 transitions. [2020-10-23 20:31:10,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:31:10,906 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 349 transitions. [2020-10-23 20:31:10,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-23 20:31:10,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:31:10,909 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:31:10,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:31:10,910 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:31:10,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:31:10,911 INFO L82 PathProgramCache]: Analyzing trace with hash -242234598, now seen corresponding path program 1 times [2020-10-23 20:31:10,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:31:10,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1438263523] [2020-10-23 20:31:10,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:31:10,915 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:31:10,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:31:10,977 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:31:11,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:31:11,042 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:31:11,092 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 20:31:11,092 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 20:31:11,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:31:11,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:31:11 BoogieIcfgContainer [2020-10-23 20:31:11,114 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:31:11,117 INFO L168 Benchmark]: Toolchain (without parser) took 3651.73 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 127.3 MB in the beginning and 144.5 MB in the end (delta: -17.2 MB). Peak memory consumption was 14.4 MB. Max. memory is 8.0 GB. [2020-10-23 20:31:11,118 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 125.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:31:11,119 INFO L168 Benchmark]: CACSL2BoogieTranslator took 472.24 ms. Allocated memory is still 151.0 MB. Free memory was 126.7 MB in the beginning and 115.9 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-23 20:31:11,120 INFO L168 Benchmark]: Boogie Preprocessor took 53.21 ms. Allocated memory is still 151.0 MB. Free memory was 115.9 MB in the beginning and 113.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:31:11,120 INFO L168 Benchmark]: RCFGBuilder took 1053.34 ms. Allocated memory is still 151.0 MB. Free memory was 113.9 MB in the beginning and 115.1 MB in the end (delta: -1.2 MB). Peak memory consumption was 18.6 MB. Max. memory is 8.0 GB. [2020-10-23 20:31:11,121 INFO L168 Benchmark]: TraceAbstraction took 2054.47 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 114.6 MB in the beginning and 144.5 MB in the end (delta: -29.9 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:31:11,125 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 125.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 472.24 ms. Allocated memory is still 151.0 MB. Free memory was 126.7 MB in the beginning and 115.9 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 53.21 ms. Allocated memory is still 151.0 MB. Free memory was 115.9 MB in the beginning and 113.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1053.34 ms. Allocated memory is still 151.0 MB. Free memory was 113.9 MB in the beginning and 115.1 MB in the end (delta: -1.2 MB). Peak memory consumption was 18.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2054.47 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 114.6 MB in the beginning and 144.5 MB in the end (delta: -29.9 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L8] int p1 = __VERIFIER_nondet_int(); [L9] int lk1; [L11] int p2 = __VERIFIER_nondet_int(); [L12] int lk2; [L14] int p3 = __VERIFIER_nondet_int(); [L15] int lk3; [L17] int p4 = __VERIFIER_nondet_int(); [L18] int lk4; [L20] int p5 = __VERIFIER_nondet_int(); [L21] int lk5; [L23] int p6 = __VERIFIER_nondet_int(); [L24] int lk6; [L26] int p7 = __VERIFIER_nondet_int(); [L27] int lk7; [L29] int p8 = __VERIFIER_nondet_int(); [L30] int lk8; [L32] int p9 = __VERIFIER_nondet_int(); [L33] int lk9; [L35] int p10 = __VERIFIER_nondet_int(); [L36] int lk10; [L38] int p11 = __VERIFIER_nondet_int(); [L39] int lk11; [L41] int p12 = __VERIFIER_nondet_int(); [L42] int lk12; [L44] int p13 = __VERIFIER_nondet_int(); [L45] int lk13; [L47] int p14 = __VERIFIER_nondet_int(); [L48] int lk14; [L50] int p15 = __VERIFIER_nondet_int(); [L51] int lk15; [L54] int cond; [L56] COND TRUE 1 [L57] cond = __VERIFIER_nondet_int() [L58] COND FALSE !(cond == 0) [L61] lk1 = 0 [L63] lk2 = 0 [L65] lk3 = 0 [L67] lk4 = 0 [L69] lk5 = 0 [L71] lk6 = 0 [L73] lk7 = 0 [L75] lk8 = 0 [L77] lk9 = 0 [L79] lk10 = 0 [L81] lk11 = 0 [L83] lk12 = 0 [L85] lk13 = 0 [L87] lk14 = 0 [L89] lk15 = 0 [L93] COND FALSE !(p1 != 0) [L97] COND FALSE !(p2 != 0) [L101] COND FALSE !(p3 != 0) [L105] COND FALSE !(p4 != 0) [L109] COND FALSE !(p5 != 0) [L113] COND FALSE !(p6 != 0) [L117] COND FALSE !(p7 != 0) [L121] COND FALSE !(p8 != 0) [L125] COND FALSE !(p9 != 0) [L129] COND FALSE !(p10 != 0) [L133] COND FALSE !(p11 != 0) [L137] COND FALSE !(p12 != 0) [L141] COND FALSE !(p13 != 0) [L145] COND FALSE !(p14 != 0) [L149] COND FALSE !(p15 != 0) [L155] COND FALSE !(p1 != 0) [L160] COND FALSE !(p2 != 0) [L233] CALL reach_error() [L3] __assert_fail("0", "test_locks_15-1.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 180 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 243 SDtfs, 440 SDslu, 20 SDs, 0 SdLazy, 214 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=263occurred in iteration=1, 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, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...