./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/locks/test_locks_15-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_08ab8185-6e51-48df-997a-4e18b3d0b1fd/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_08ab8185-6e51-48df-997a-4e18b3d0b1fd/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_08ab8185-6e51-48df-997a-4e18b3d0b1fd/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_08ab8185-6e51-48df-997a-4e18b3d0b1fd/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/locks/test_locks_15-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_08ab8185-6e51-48df-997a-4e18b3d0b1fd/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_08ab8185-6e51-48df-997a-4e18b3d0b1fd/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 04dfa849b43716e8587b0fc4953cadbe3968c4e3 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:20:52,987 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:20:52,990 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:20:53,035 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:20:53,036 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:20:53,042 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:20:53,046 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:20:53,051 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:20:53,054 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:20:53,062 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:20:53,064 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:20:53,066 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:20:53,067 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:20:53,071 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:20:53,072 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:20:53,076 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:20:53,077 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:20:53,078 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:20:53,085 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:20:53,092 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:20:53,095 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:20:53,096 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:20:53,098 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:20:53,100 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:20:53,106 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:20:53,106 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:20:53,107 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:20:53,109 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:20:53,110 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:20:53,111 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:20:53,111 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:20:53,113 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:20:53,115 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:20:53,116 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:20:53,118 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:20:53,118 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:20:53,119 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:20:53,119 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:20:53,120 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:20:53,121 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:20:53,121 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:20:53,124 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_08ab8185-6e51-48df-997a-4e18b3d0b1fd/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:20:53,171 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:20:53,172 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:20:53,173 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:20:53,174 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:20:53,174 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:20:53,174 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:20:53,174 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:20:53,175 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:20:53,175 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:20:53,175 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:20:53,176 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:20:53,177 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:20:53,177 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:20:53,177 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:20:53,177 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:20:53,178 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:20:53,178 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:20:53,178 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:20:53,178 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:20:53,179 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:20:53,179 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:20:53,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:20:53,179 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:20:53,180 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:20:53,180 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:20:53,180 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:20:53,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:20:53,180 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:20:53,181 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:20:53,181 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:/tmp/vcloud-vcloud-master/worker/run_dir_08ab8185-6e51-48df-997a-4e18b3d0b1fd/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_08ab8185-6e51-48df-997a-4e18b3d0b1fd/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 04dfa849b43716e8587b0fc4953cadbe3968c4e3 [2020-11-28 03:20:53,448 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:20:53,475 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:20:53,480 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:20:53,482 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:20:53,483 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:20:53,484 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_08ab8185-6e51-48df-997a-4e18b3d0b1fd/bin/uautomizer/../../sv-benchmarks/c/locks/test_locks_15-1.c [2020-11-28 03:20:53,571 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_08ab8185-6e51-48df-997a-4e18b3d0b1fd/bin/uautomizer/data/8610766f9/2daaccd99c104d86a13339f1433c223f/FLAG628e45bb4 [2020-11-28 03:20:54,075 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:20:54,075 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_08ab8185-6e51-48df-997a-4e18b3d0b1fd/sv-benchmarks/c/locks/test_locks_15-1.c [2020-11-28 03:20:54,084 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_08ab8185-6e51-48df-997a-4e18b3d0b1fd/bin/uautomizer/data/8610766f9/2daaccd99c104d86a13339f1433c223f/FLAG628e45bb4 [2020-11-28 03:20:54,465 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_08ab8185-6e51-48df-997a-4e18b3d0b1fd/bin/uautomizer/data/8610766f9/2daaccd99c104d86a13339f1433c223f [2020-11-28 03:20:54,468 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:20:54,469 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:20:54,472 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:20:54,472 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:20:54,485 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:20:54,486 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:20:54" (1/1) ... [2020-11-28 03:20:54,489 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fe3be74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:54, skipping insertion in model container [2020-11-28 03:20:54,490 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:20:54" (1/1) ... [2020-11-28 03:20:54,497 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:20:54,527 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:20:54,716 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:20:54,725 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:20:54,758 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:20:54,771 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:20:54,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:54 WrapperNode [2020-11-28 03:20:54,772 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:20:54,773 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:20:54,773 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:20:54,773 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:20:54,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:54" (1/1) ... [2020-11-28 03:20:54,788 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:54" (1/1) ... [2020-11-28 03:20:54,812 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:20:54,813 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:20:54,813 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:20:54,814 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:20:54,821 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:54" (1/1) ... [2020-11-28 03:20:54,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:54" (1/1) ... [2020-11-28 03:20:54,824 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:54" (1/1) ... [2020-11-28 03:20:54,824 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:54" (1/1) ... [2020-11-28 03:20:54,829 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:54" (1/1) ... [2020-11-28 03:20:54,835 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:54" (1/1) ... [2020-11-28 03:20:54,837 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:54" (1/1) ... [2020-11-28 03:20:54,840 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:20:54,841 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:20:54,841 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:20:54,841 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:20:54,842 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08ab8185-6e51-48df-997a-4e18b3d0b1fd/bin/uautomizer/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 [2020-11-28 03:20:54,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:20:54,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:20:54,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:20:54,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:20:55,446 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:20:55,447 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-11-28 03:20:55,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:20:55 BoogieIcfgContainer [2020-11-28 03:20:55,448 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:20:55,450 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:20:55,450 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:20:55,454 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:20:55,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:20:54" (1/3) ... [2020-11-28 03:20:55,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7941728c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:20:55, skipping insertion in model container [2020-11-28 03:20:55,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:54" (2/3) ... [2020-11-28 03:20:55,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7941728c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:20:55, skipping insertion in model container [2020-11-28 03:20:55,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:20:55" (3/3) ... [2020-11-28 03:20:55,456 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_15-1.c [2020-11-28 03:20:55,463 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:20:55,468 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:20:55,476 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:20:55,498 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:20:55,498 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:20:55,499 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:20:55,499 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:20:55,499 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:20:55,499 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:20:55,499 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:20:55,499 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:20:55,516 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-11-28 03:20:55,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 03:20:55,521 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:55,522 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] [2020-11-28 03:20:55,523 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:20:55,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:55,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1188553263, now seen corresponding path program 1 times [2020-11-28 03:20:55,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:55,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306029125] [2020-11-28 03:20:55,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:55,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:55,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:55,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306029125] [2020-11-28 03:20:55,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:20:55,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:20:55,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382946492] [2020-11-28 03:20:55,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:20:55,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:55,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:20:55,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:20:55,822 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 3 states. [2020-11-28 03:20:55,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:55,882 INFO L93 Difference]: Finished difference Result 161 states and 301 transitions. [2020-11-28 03:20:55,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:20:55,884 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-11-28 03:20:55,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:20:55,901 INFO L225 Difference]: With dead ends: 161 [2020-11-28 03:20:55,901 INFO L226 Difference]: Without dead ends: 99 [2020-11-28 03:20:55,905 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 [2020-11-28 03:20:55,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-11-28 03:20:55,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 97. [2020-11-28 03:20:55,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-11-28 03:20:55,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 183 transitions. [2020-11-28 03:20:55,976 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 183 transitions. Word has length 22 [2020-11-28 03:20:55,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:20:55,976 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 183 transitions. [2020-11-28 03:20:55,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:20:55,977 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 183 transitions. [2020-11-28 03:20:55,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 03:20:55,980 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:55,980 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] [2020-11-28 03:20:55,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:20:55,981 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:20:55,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:55,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1188560455, now seen corresponding path program 1 times [2020-11-28 03:20:55,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:55,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748343293] [2020-11-28 03:20:55,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:56,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:56,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:56,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748343293] [2020-11-28 03:20:56,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:20:56,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:20:56,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150280404] [2020-11-28 03:20:56,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:20:56,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:56,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:20:56,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:20:56,105 INFO L87 Difference]: Start difference. First operand 97 states and 183 transitions. Second operand 3 states. [2020-11-28 03:20:56,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:56,129 INFO L93 Difference]: Finished difference Result 100 states and 186 transitions. [2020-11-28 03:20:56,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:20:56,134 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-11-28 03:20:56,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:20:56,135 INFO L225 Difference]: With dead ends: 100 [2020-11-28 03:20:56,135 INFO L226 Difference]: Without dead ends: 98 [2020-11-28 03:20:56,136 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 [2020-11-28 03:20:56,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-11-28 03:20:56,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-11-28 03:20:56,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-11-28 03:20:56,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 184 transitions. [2020-11-28 03:20:56,151 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 184 transitions. Word has length 22 [2020-11-28 03:20:56,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:20:56,151 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 184 transitions. [2020-11-28 03:20:56,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:20:56,152 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 184 transitions. [2020-11-28 03:20:56,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 03:20:56,153 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:56,153 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] [2020-11-28 03:20:56,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:20:56,154 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:20:56,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:56,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1112269327, now seen corresponding path program 1 times [2020-11-28 03:20:56,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:56,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748336310] [2020-11-28 03:20:56,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:56,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:56,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:56,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748336310] [2020-11-28 03:20:56,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:20:56,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:20:56,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519056658] [2020-11-28 03:20:56,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:20:56,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:56,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:20:56,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:20:56,257 INFO L87 Difference]: Start difference. First operand 98 states and 184 transitions. Second operand 3 states. [2020-11-28 03:20:56,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:56,292 INFO L93 Difference]: Finished difference Result 233 states and 437 transitions. [2020-11-28 03:20:56,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:20:56,296 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-11-28 03:20:56,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:20:56,297 INFO L225 Difference]: With dead ends: 233 [2020-11-28 03:20:56,297 INFO L226 Difference]: Without dead ends: 137 [2020-11-28 03:20:56,298 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 [2020-11-28 03:20:56,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-11-28 03:20:56,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 135. [2020-11-28 03:20:56,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-11-28 03:20:56,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 250 transitions. [2020-11-28 03:20:56,320 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 250 transitions. Word has length 22 [2020-11-28 03:20:56,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:20:56,321 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 250 transitions. [2020-11-28 03:20:56,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:20:56,321 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 250 transitions. [2020-11-28 03:20:56,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 03:20:56,324 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:56,324 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] [2020-11-28 03:20:56,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:20:56,326 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:20:56,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:56,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1112262135, now seen corresponding path program 1 times [2020-11-28 03:20:56,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:56,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14780366] [2020-11-28 03:20:56,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:56,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:56,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:56,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14780366] [2020-11-28 03:20:56,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:20:56,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:20:56,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74755032] [2020-11-28 03:20:56,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:20:56,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:56,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:20:56,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:20:56,401 INFO L87 Difference]: Start difference. First operand 135 states and 250 transitions. Second operand 3 states. [2020-11-28 03:20:56,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:56,428 INFO L93 Difference]: Finished difference Result 187 states and 341 transitions. [2020-11-28 03:20:56,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:20:56,428 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-11-28 03:20:56,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:20:56,430 INFO L225 Difference]: With dead ends: 187 [2020-11-28 03:20:56,430 INFO L226 Difference]: Without dead ends: 135 [2020-11-28 03:20:56,431 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 [2020-11-28 03:20:56,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-11-28 03:20:56,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 133. [2020-11-28 03:20:56,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-11-28 03:20:56,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 243 transitions. [2020-11-28 03:20:56,449 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 243 transitions. Word has length 22 [2020-11-28 03:20:56,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:20:56,449 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 243 transitions. [2020-11-28 03:20:56,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:20:56,449 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 243 transitions. [2020-11-28 03:20:56,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 03:20:56,455 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:56,455 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] [2020-11-28 03:20:56,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 03:20:56,456 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:20:56,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:56,456 INFO L82 PathProgramCache]: Analyzing trace with hash -476078575, now seen corresponding path program 1 times [2020-11-28 03:20:56,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:56,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138726611] [2020-11-28 03:20:56,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:56,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:56,483 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:56,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:56,511 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:56,546 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:20:56,546 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:20:56,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 03:20:56,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:20:56 BoogieIcfgContainer [2020-11-28 03:20:56,589 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:20:56,590 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:20:56,590 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:20:56,590 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:20:56,591 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:20:55" (3/4) ... [2020-11-28 03:20:56,592 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 03:20:56,675 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_08ab8185-6e51-48df-997a-4e18b3d0b1fd/bin/uautomizer/witness.graphml [2020-11-28 03:20:56,675 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:20:56,677 INFO L168 Benchmark]: Toolchain (without parser) took 2206.67 ms. Allocated memory was 98.6 MB in the beginning and 130.0 MB in the end (delta: 31.5 MB). Free memory was 67.9 MB in the beginning and 104.1 MB in the end (delta: -36.3 MB). Peak memory consumption was 43.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:20:56,677 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 98.6 MB. Free memory was 54.2 MB in the beginning and 54.1 MB in the end (delta: 53.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:20:56,678 INFO L168 Benchmark]: CACSL2BoogieTranslator took 300.31 ms. Allocated memory was 98.6 MB in the beginning and 130.0 MB in the end (delta: 31.5 MB). Free memory was 67.7 MB in the beginning and 105.1 MB in the end (delta: -37.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:20:56,679 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.46 ms. Allocated memory is still 130.0 MB. Free memory was 105.1 MB in the beginning and 103.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:20:56,679 INFO L168 Benchmark]: Boogie Preprocessor took 26.84 ms. Allocated memory is still 130.0 MB. Free memory was 103.5 MB in the beginning and 102.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:20:56,680 INFO L168 Benchmark]: RCFGBuilder took 607.83 ms. Allocated memory is still 130.0 MB. Free memory was 102.0 MB in the beginning and 77.9 MB in the end (delta: 24.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:20:56,680 INFO L168 Benchmark]: TraceAbstraction took 1139.08 ms. Allocated memory is still 130.0 MB. Free memory was 77.4 MB in the beginning and 60.1 MB in the end (delta: 17.3 MB). Peak memory consumption was 19.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:20:56,681 INFO L168 Benchmark]: Witness Printer took 85.54 ms. Allocated memory is still 130.0 MB. Free memory was 60.1 MB in the beginning and 104.1 MB in the end (delta: -44.1 MB). Peak memory consumption was 3.9 MB. Max. memory is 16.1 GB. [2020-11-28 03:20:56,684 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 98.6 MB. Free memory was 54.2 MB in the beginning and 54.1 MB in the end (delta: 53.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 300.31 ms. Allocated memory was 98.6 MB in the beginning and 130.0 MB in the end (delta: 31.5 MB). Free memory was 67.7 MB in the beginning and 105.1 MB in the end (delta: -37.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.46 ms. Allocated memory is still 130.0 MB. Free memory was 105.1 MB in the beginning and 103.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.84 ms. Allocated memory is still 130.0 MB. Free memory was 103.5 MB in the beginning and 102.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 607.83 ms. Allocated memory is still 130.0 MB. Free memory was 102.0 MB in the beginning and 77.9 MB in the end (delta: 24.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1139.08 ms. Allocated memory is still 130.0 MB. Free memory was 77.4 MB in the beginning and 60.1 MB in the end (delta: 17.3 MB). Peak memory consumption was 19.7 MB. Max. memory is 16.1 GB. * Witness Printer took 85.54 ms. Allocated memory is still 130.0 MB. Free memory was 60.1 MB in the beginning and 104.1 MB in the end (delta: -44.1 MB). Peak memory consumption was 3.9 MB. Max. memory is 16.1 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 TRUE p4 != 0 [L106] lk4 = 1 [L109] COND TRUE p5 != 0 [L110] lk5 = 1 [L113] COND TRUE p6 != 0 [L114] lk6 = 1 [L117] COND TRUE p7 != 0 [L118] lk7 = 1 [L121] COND TRUE p8 != 0 [L122] lk8 = 1 [L125] COND TRUE p9 != 0 [L126] lk9 = 1 [L129] COND TRUE p10 != 0 [L130] lk10 = 1 [L133] COND FALSE !(p11 != 0) [L137] COND TRUE p12 != 0 [L138] lk12 = 1 [L141] COND TRUE p13 != 0 [L142] lk13 = 1 [L145] COND TRUE p14 != 0 [L146] lk14 = 1 [L149] COND TRUE p15 != 0 [L150] lk15 = 1 [L155] COND FALSE !(p1 != 0) [L160] COND FALSE !(p2 != 0) [L3] __assert_fail("0", "test_locks_15-1.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 56 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 475 SDtfs, 244 SDslu, 307 SDs, 0 SdLazy, 20 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=135occurred 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, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 110 NumberOfCodeBlocks, 110 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 84 ConstructedInterpolants, 0 QuantifiedInterpolants, 4956 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...