./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/locks/test_locks_15-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_4d89a7f5-881c-4eec-9769-3e77bc0c60f1/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_4d89a7f5-881c-4eec-9769-3e77bc0c60f1/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4d89a7f5-881c-4eec-9769-3e77bc0c60f1/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4d89a7f5-881c-4eec-9769-3e77bc0c60f1/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/locks/test_locks_15-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_4d89a7f5-881c-4eec-9769-3e77bc0c60f1/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4d89a7f5-881c-4eec-9769-3e77bc0c60f1/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 04dfa849b43716e8587b0fc4953cadbe3968c4e3 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_4d89a7f5-881c-4eec-9769-3e77bc0c60f1/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_4d89a7f5-881c-4eec-9769-3e77bc0c60f1/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4d89a7f5-881c-4eec-9769-3e77bc0c60f1/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4d89a7f5-881c-4eec-9769-3e77bc0c60f1/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/locks/test_locks_15-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_4d89a7f5-881c-4eec-9769-3e77bc0c60f1/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4d89a7f5-881c-4eec-9769-3e77bc0c60f1/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --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 Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:13:00,259 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:13:00,262 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:13:00,362 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:13:00,362 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:13:00,364 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:13:00,366 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:13:00,368 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:13:00,370 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:13:00,372 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:13:00,373 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:13:00,375 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:13:00,375 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:13:00,377 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:13:00,378 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:13:00,380 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:13:00,381 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:13:00,382 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:13:00,385 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:13:00,387 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:13:00,389 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:13:00,391 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:13:00,393 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:13:00,394 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:13:00,398 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:13:00,398 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:13:00,398 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:13:00,400 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:13:00,401 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:13:00,403 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:13:00,403 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:13:00,404 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:13:00,405 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:13:00,406 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:13:00,408 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:13:00,408 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:13:00,409 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:13:00,410 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:13:00,410 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:13:00,412 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:13:00,413 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:13:00,419 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4d89a7f5-881c-4eec-9769-3e77bc0c60f1/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-30 00:13:00,470 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:13:00,470 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:13:00,477 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:13:00,477 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:13:00,478 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:13:00,478 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:13:00,478 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:13:00,478 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 00:13:00,479 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:13:00,479 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:13:00,480 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:13:00,480 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-30 00:13:00,480 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-30 00:13:00,481 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-30 00:13:00,481 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:13:00,481 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 00:13:00,481 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:13:00,481 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:13:00,482 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:13:00,482 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:13:00,482 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:13:00,482 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:13:00,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:13:00,483 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:13:00,484 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:13:00,484 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:13:00,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:13:00,484 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:13:00,484 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_4d89a7f5-881c-4eec-9769-3e77bc0c60f1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_4d89a7f5-881c-4eec-9769-3e77bc0c60f1/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 04dfa849b43716e8587b0fc4953cadbe3968c4e3 [2020-11-30 00:13:00,778 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:13:00,816 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:13:00,819 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:13:00,821 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:13:00,821 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:13:00,826 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4d89a7f5-881c-4eec-9769-3e77bc0c60f1/bin/uautomizer/../../sv-benchmarks/c/locks/test_locks_15-1.c [2020-11-30 00:13:00,910 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4d89a7f5-881c-4eec-9769-3e77bc0c60f1/bin/uautomizer/data/a7b6663d0/e28b45c2e08346ad92b67152a34bf8a0/FLAG92abe92e9 [2020-11-30 00:13:01,416 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:13:01,417 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4d89a7f5-881c-4eec-9769-3e77bc0c60f1/sv-benchmarks/c/locks/test_locks_15-1.c [2020-11-30 00:13:01,437 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4d89a7f5-881c-4eec-9769-3e77bc0c60f1/bin/uautomizer/data/a7b6663d0/e28b45c2e08346ad92b67152a34bf8a0/FLAG92abe92e9 [2020-11-30 00:13:01,777 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4d89a7f5-881c-4eec-9769-3e77bc0c60f1/bin/uautomizer/data/a7b6663d0/e28b45c2e08346ad92b67152a34bf8a0 [2020-11-30 00:13:01,779 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:13:01,781 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-30 00:13:01,793 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:13:01,793 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:13:01,797 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:13:01,798 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:13:01" (1/1) ... [2020-11-30 00:13:01,801 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2462210e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:13:01, skipping insertion in model container [2020-11-30 00:13:01,802 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:13:01" (1/1) ... [2020-11-30 00:13:01,810 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:13:01,853 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:13:02,048 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:13:02,059 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:13:02,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:13:02,157 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:13:02,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:13:02 WrapperNode [2020-11-30 00:13:02,158 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:13:02,159 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:13:02,159 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:13:02,159 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:13:02,176 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:13:02" (1/1) ... [2020-11-30 00:13:02,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:13:02" (1/1) ... [2020-11-30 00:13:02,185 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:13:02" (1/1) ... [2020-11-30 00:13:02,185 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:13:02" (1/1) ... [2020-11-30 00:13:02,194 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:13:02" (1/1) ... [2020-11-30 00:13:02,203 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:13:02" (1/1) ... [2020-11-30 00:13:02,205 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:13:02" (1/1) ... [2020-11-30 00:13:02,209 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:13:02,210 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:13:02,210 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:13:02,211 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:13:02,212 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:13:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4d89a7f5-881c-4eec-9769-3e77bc0c60f1/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 [2020-11-30 00:13:02,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-30 00:13:02,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:13:02,283 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-30 00:13:02,283 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-30 00:13:02,283 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-30 00:13:02,283 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-30 00:13:02,283 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-30 00:13:02,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:13:02,284 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-30 00:13:02,284 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-30 00:13:02,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-30 00:13:02,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:13:02,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:13:02,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 00:13:02,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 00:13:02,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 00:13:02,832 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:13:02,833 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-30 00:13:02,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:13:02 BoogieIcfgContainer [2020-11-30 00:13:02,835 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:13:02,836 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:13:02,836 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:13:02,840 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:13:02,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:13:01" (1/3) ... [2020-11-30 00:13:02,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@836f93c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:13:02, skipping insertion in model container [2020-11-30 00:13:02,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:13:02" (2/3) ... [2020-11-30 00:13:02,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@836f93c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:13:02, skipping insertion in model container [2020-11-30 00:13:02,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:13:02" (3/3) ... [2020-11-30 00:13:02,844 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_15-1.c [2020-11-30 00:13:02,856 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:13:02,862 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-30 00:13:02,873 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-30 00:13:02,893 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:13:02,894 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-30 00:13:02,894 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:13:02,894 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:13:02,894 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:13:02,894 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:13:02,894 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:13:02,894 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:13:02,907 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-11-30 00:13:02,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 00:13:02,914 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:13:02,915 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:13:02,916 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-30 00:13:02,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:13:02,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1650782030, now seen corresponding path program 1 times [2020-11-30 00:13:02,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:13:02,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384769862] [2020-11-30 00:13:02,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:13:03,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:13:03,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 00:13:03,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:13:03,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:13:03,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384769862] [2020-11-30 00:13:03,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:13:03,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:13:03,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842669128] [2020-11-30 00:13:03,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:13:03,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:13:03,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:13:03,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:13:03,324 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 3 states. [2020-11-30 00:13:03,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:13:03,388 INFO L93 Difference]: Finished difference Result 61 states and 105 transitions. [2020-11-30 00:13:03,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:13:03,390 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-30 00:13:03,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:13:03,415 INFO L225 Difference]: With dead ends: 61 [2020-11-30 00:13:03,419 INFO L226 Difference]: Without dead ends: 56 [2020-11-30 00:13:03,421 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:13:03,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-11-30 00:13:03,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-11-30 00:13:03,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-11-30 00:13:03,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 100 transitions. [2020-11-30 00:13:03,490 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 100 transitions. Word has length 9 [2020-11-30 00:13:03,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:13:03,491 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 100 transitions. [2020-11-30 00:13:03,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:13:03,491 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 100 transitions. [2020-11-30 00:13:03,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-30 00:13:03,493 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:13:03,494 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] [2020-11-30 00:13:03,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:13:03,495 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-30 00:13:03,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:13:03,497 INFO L82 PathProgramCache]: Analyzing trace with hash 868347282, now seen corresponding path program 1 times [2020-11-30 00:13:03,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:13:03,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070357235] [2020-11-30 00:13:03,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:13:03,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:13:03,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 00:13:03,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:13:03,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:13:03,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070357235] [2020-11-30 00:13:03,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:13:03,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:13:03,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019308610] [2020-11-30 00:13:03,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:13:03,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:13:03,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:13:03,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:13:03,723 INFO L87 Difference]: Start difference. First operand 56 states and 100 transitions. Second operand 4 states. [2020-11-30 00:13:04,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:13:04,094 INFO L93 Difference]: Finished difference Result 103 states and 190 transitions. [2020-11-30 00:13:04,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:13:04,095 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-11-30 00:13:04,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:13:04,098 INFO L225 Difference]: With dead ends: 103 [2020-11-30 00:13:04,098 INFO L226 Difference]: Without dead ends: 103 [2020-11-30 00:13:04,099 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:13:04,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-11-30 00:13:04,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 72. [2020-11-30 00:13:04,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-11-30 00:13:04,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 131 transitions. [2020-11-30 00:13:04,111 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 131 transitions. Word has length 27 [2020-11-30 00:13:04,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:13:04,111 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 131 transitions. [2020-11-30 00:13:04,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:13:04,111 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 131 transitions. [2020-11-30 00:13:04,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-30 00:13:04,113 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:13:04,113 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] [2020-11-30 00:13:04,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 00:13:04,113 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-30 00:13:04,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:13:04,114 INFO L82 PathProgramCache]: Analyzing trace with hash 868570234, now seen corresponding path program 1 times [2020-11-30 00:13:04,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:13:04,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440138284] [2020-11-30 00:13:04,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:13:04,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:13:04,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 00:13:04,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:13:04,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:13:04,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440138284] [2020-11-30 00:13:04,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:13:04,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:13:04,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879254310] [2020-11-30 00:13:04,225 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:13:04,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:13:04,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:13:04,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:13:04,227 INFO L87 Difference]: Start difference. First operand 72 states and 131 transitions. Second operand 4 states. [2020-11-30 00:13:04,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:13:04,526 INFO L93 Difference]: Finished difference Result 104 states and 190 transitions. [2020-11-30 00:13:04,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:13:04,528 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-11-30 00:13:04,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:13:04,530 INFO L225 Difference]: With dead ends: 104 [2020-11-30 00:13:04,530 INFO L226 Difference]: Without dead ends: 104 [2020-11-30 00:13:04,530 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:13:04,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-11-30 00:13:04,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2020-11-30 00:13:04,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-11-30 00:13:04,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 189 transitions. [2020-11-30 00:13:04,547 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 189 transitions. Word has length 27 [2020-11-30 00:13:04,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:13:04,547 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 189 transitions. [2020-11-30 00:13:04,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:13:04,548 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 189 transitions. [2020-11-30 00:13:04,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-30 00:13:04,554 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:13:04,554 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] [2020-11-30 00:13:04,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 00:13:04,555 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-30 00:13:04,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:13:04,556 INFO L82 PathProgramCache]: Analyzing trace with hash -820596460, now seen corresponding path program 1 times [2020-11-30 00:13:04,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:13:04,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765612992] [2020-11-30 00:13:04,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:13:04,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:13:04,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 00:13:04,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:13:04,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:13:04,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765612992] [2020-11-30 00:13:04,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:13:04,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:13:04,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053392247] [2020-11-30 00:13:04,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:13:04,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:13:04,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:13:04,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:13:04,669 INFO L87 Difference]: Start difference. First operand 103 states and 189 transitions. Second operand 4 states. [2020-11-30 00:13:04,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:13:04,936 INFO L93 Difference]: Finished difference Result 106 states and 190 transitions. [2020-11-30 00:13:04,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:13:04,936 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-11-30 00:13:04,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:13:04,938 INFO L225 Difference]: With dead ends: 106 [2020-11-30 00:13:04,938 INFO L226 Difference]: Without dead ends: 106 [2020-11-30 00:13:04,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:13:04,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-11-30 00:13:04,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2020-11-30 00:13:04,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-11-30 00:13:04,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 189 transitions. [2020-11-30 00:13:04,963 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 189 transitions. Word has length 27 [2020-11-30 00:13:04,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:13:04,964 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 189 transitions. [2020-11-30 00:13:04,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:13:04,964 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 189 transitions. [2020-11-30 00:13:04,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-30 00:13:04,967 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:13:04,967 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] [2020-11-30 00:13:04,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 00:13:04,968 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-30 00:13:04,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:13:04,969 INFO L82 PathProgramCache]: Analyzing trace with hash -820373508, now seen corresponding path program 1 times [2020-11-30 00:13:04,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:13:04,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637045001] [2020-11-30 00:13:04,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:13:05,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:13:05,018 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:13:05,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:13:05,060 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:13:05,111 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:13:05,111 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:13:05,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 00:13:05,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:13:05 BoogieIcfgContainer [2020-11-30 00:13:05,209 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:13:05,209 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:13:05,209 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:13:05,209 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:13:05,210 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:13:02" (3/4) ... [2020-11-30 00:13:05,212 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 00:13:05,213 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:13:05,214 INFO L168 Benchmark]: Toolchain (without parser) took 3432.71 ms. Allocated memory was 83.9 MB in the beginning and 121.6 MB in the end (delta: 37.7 MB). Free memory was 54.7 MB in the beginning and 76.5 MB in the end (delta: -21.8 MB). Peak memory consumption was 15.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:13:05,215 INFO L168 Benchmark]: CDTParser took 0.43 ms. Allocated memory is still 83.9 MB. Free memory was 41.0 MB in the beginning and 41.0 MB in the end (delta: 56.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:13:05,216 INFO L168 Benchmark]: CACSL2BoogieTranslator took 365.10 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 54.4 MB in the beginning and 77.4 MB in the end (delta: -23.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:13:05,216 INFO L168 Benchmark]: Boogie Preprocessor took 50.53 ms. Allocated memory is still 100.7 MB. Free memory was 77.4 MB in the beginning and 75.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:13:05,217 INFO L168 Benchmark]: RCFGBuilder took 624.80 ms. Allocated memory is still 100.7 MB. Free memory was 75.3 MB in the beginning and 50.1 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:13:05,218 INFO L168 Benchmark]: TraceAbstraction took 2372.39 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 49.5 MB in the beginning and 77.5 MB in the end (delta: -28.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:13:05,218 INFO L168 Benchmark]: Witness Printer took 3.59 ms. Allocated memory is still 121.6 MB. Free memory was 77.5 MB in the beginning and 76.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:13:05,221 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43 ms. Allocated memory is still 83.9 MB. Free memory was 41.0 MB in the beginning and 41.0 MB in the end (delta: 56.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 365.10 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 54.4 MB in the beginning and 77.4 MB in the end (delta: -23.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 50.53 ms. Allocated memory is still 100.7 MB. Free memory was 77.4 MB in the beginning and 75.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 624.80 ms. Allocated memory is still 100.7 MB. Free memory was 75.3 MB in the beginning and 50.1 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2372.39 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 49.5 MB in the beginning and 77.5 MB in the end (delta: -28.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 3.59 ms. Allocated memory is still 121.6 MB. Free memory was 77.5 MB in the beginning and 76.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 3. Possible 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; VAL [p1=0, p10=0, p11=-5, p12=-3, p13=1, p14=1, p15=1, p2=0, p3=1, p4=-4, p5=6, p6=-1, p7=1, p8=-2, p9=1] [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 VAL [cond=1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=0, lk4=0, lk5=0, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p10=0, p11=-5, p12=-3, p13=1, p14=1, p15=1, p2=0, p3=1, p4=-4, p5=6, p6=-1, p7=1, p8=-2, p9=1] [L93] COND FALSE !(p1 != 0) VAL [cond=1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=0, lk4=0, lk5=0, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p10=0, p11=-5, p12=-3, p13=1, p14=1, p15=1, p2=0, p3=1, p4=-4, p5=6, p6=-1, p7=1, p8=-2, p9=1] [L97] COND FALSE !(p2 != 0) VAL [cond=1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=0, lk4=0, lk5=0, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p10=0, p11=-5, p12=-3, p13=1, p14=1, p15=1, p2=0, p3=1, p4=-4, p5=6, p6=-1, p7=1, p8=-2, p9=1] [L101] COND TRUE p3 != 0 [L102] lk3 = 1 VAL [cond=1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=0, lk5=0, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p10=0, p11=-5, p12=-3, p13=1, p14=1, p15=1, p2=0, p3=1, p4=-4, p5=6, p6=-1, p7=1, p8=-2, p9=1] [L105] COND TRUE p4 != 0 [L106] lk4 = 1 VAL [cond=1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=0, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p10=0, p11=-5, p12=-3, p13=1, p14=1, p15=1, p2=0, p3=1, p4=-4, p5=6, p6=-1, p7=1, p8=-2, p9=1] [L109] COND TRUE p5 != 0 [L110] lk5 = 1 VAL [cond=1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p10=0, p11=-5, p12=-3, p13=1, p14=1, p15=1, p2=0, p3=1, p4=-4, p5=6, p6=-1, p7=1, p8=-2, p9=1] [L113] COND TRUE p6 != 0 [L114] lk6 = 1 VAL [cond=1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=0, lk8=0, lk9=0, p1=0, p10=0, p11=-5, p12=-3, p13=1, p14=1, p15=1, p2=0, p3=1, p4=-4, p5=6, p6=-1, p7=1, p8=-2, p9=1] [L117] COND TRUE p7 != 0 [L118] lk7 = 1 VAL [cond=1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=0, lk9=0, p1=0, p10=0, p11=-5, p12=-3, p13=1, p14=1, p15=1, p2=0, p3=1, p4=-4, p5=6, p6=-1, p7=1, p8=-2, p9=1] [L121] COND TRUE p8 != 0 [L122] lk8 = 1 VAL [cond=1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=0, p1=0, p10=0, p11=-5, p12=-3, p13=1, p14=1, p15=1, p2=0, p3=1, p4=-4, p5=6, p6=-1, p7=1, p8=-2, p9=1] [L125] COND TRUE p9 != 0 [L126] lk9 = 1 VAL [cond=1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=-5, p12=-3, p13=1, p14=1, p15=1, p2=0, p3=1, p4=-4, p5=6, p6=-1, p7=1, p8=-2, p9=1] [L129] COND FALSE !(p10 != 0) VAL [cond=1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=-5, p12=-3, p13=1, p14=1, p15=1, p2=0, p3=1, p4=-4, p5=6, p6=-1, p7=1, p8=-2, p9=1] [L133] COND TRUE p11 != 0 [L134] lk11 = 1 VAL [cond=1, lk1=0, lk10=0, lk11=1, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=-5, p12=-3, p13=1, p14=1, p15=1, p2=0, p3=1, p4=-4, p5=6, p6=-1, p7=1, p8=-2, p9=1] [L137] COND TRUE p12 != 0 [L138] lk12 = 1 VAL [cond=1, lk1=0, lk10=0, lk11=1, lk12=1, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=-5, p12=-3, p13=1, p14=1, p15=1, p2=0, p3=1, p4=-4, p5=6, p6=-1, p7=1, p8=-2, p9=1] [L141] COND TRUE p13 != 0 [L142] lk13 = 1 VAL [cond=1, lk1=0, lk10=0, lk11=1, lk12=1, lk13=1, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=-5, p12=-3, p13=1, p14=1, p15=1, p2=0, p3=1, p4=-4, p5=6, p6=-1, p7=1, p8=-2, p9=1] [L145] COND TRUE p14 != 0 [L146] lk14 = 1 VAL [cond=1, lk1=0, lk10=0, lk11=1, lk12=1, lk13=1, lk14=1, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=-5, p12=-3, p13=1, p14=1, p15=1, p2=0, p3=1, p4=-4, p5=6, p6=-1, p7=1, p8=-2, p9=1] [L149] COND TRUE p15 != 0 [L150] lk15 = 1 VAL [cond=1, lk1=0, lk10=0, lk11=1, lk12=1, lk13=1, lk14=1, lk15=1, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=-5, p12=-3, p13=1, p14=1, p15=1, p2=0, p3=1, p4=-4, p5=6, p6=-1, p7=1, p8=-2, p9=1] [L155] COND FALSE !(p1 != 0) VAL [cond=1, lk1=0, lk10=0, lk11=1, lk12=1, lk13=1, lk14=1, lk15=1, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=-5, p12=-3, p13=1, p14=1, p15=1, p2=0, p3=1, p4=-4, p5=6, p6=-1, p7=1, p8=-2, p9=1] [L160] COND FALSE !(p2 != 0) VAL [cond=1, lk1=0, lk10=0, lk11=1, lk12=1, lk13=1, lk14=1, lk15=1, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=-5, p12=-3, p13=1, p14=1, p15=1, p2=0, p3=1, p4=-4, p5=6, p6=-1, p7=1, p8=-2, p9=1] [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, 65 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.2s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 487 SDtfs, 769 SDslu, 24 SDs, 0 SdLazy, 292 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=105occurred in iteration=4, 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, 33 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 117 NumberOfCodeBlocks, 117 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 86 ConstructedInterpolants, 0 QuantifiedInterpolants, 7454 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:13:07,948 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:13:07,951 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:13:08,002 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:13:08,003 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:13:08,004 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:13:08,006 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:13:08,009 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:13:08,012 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:13:08,013 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:13:08,014 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:13:08,016 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:13:08,017 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:13:08,018 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:13:08,020 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:13:08,021 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:13:08,023 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:13:08,024 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:13:08,026 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:13:08,029 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:13:08,031 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:13:08,033 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:13:08,035 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:13:08,036 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:13:08,039 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:13:08,040 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:13:08,040 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:13:08,041 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:13:08,042 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:13:08,043 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:13:08,044 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:13:08,045 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:13:08,046 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:13:08,047 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:13:08,048 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:13:08,049 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:13:08,050 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:13:08,050 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:13:08,051 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:13:08,052 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:13:08,053 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:13:08,054 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4d89a7f5-881c-4eec-9769-3e77bc0c60f1/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2020-11-30 00:13:08,082 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:13:08,082 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:13:08,084 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:13:08,084 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:13:08,085 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:13:08,085 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:13:08,085 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:13:08,085 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 00:13:08,085 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:13:08,086 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:13:08,086 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:13:08,086 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-30 00:13:08,086 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-30 00:13:08,086 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-30 00:13:08,087 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:13:08,087 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 00:13:08,087 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 00:13:08,087 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 00:13:08,087 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:13:08,087 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:13:08,088 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:13:08,088 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:13:08,088 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:13:08,088 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:13:08,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:13:08,089 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:13:08,089 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:13:08,089 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-30 00:13:08,089 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 00:13:08,089 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:13:08,090 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 00:13:08,090 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_4d89a7f5-881c-4eec-9769-3e77bc0c60f1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_4d89a7f5-881c-4eec-9769-3e77bc0c60f1/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 04dfa849b43716e8587b0fc4953cadbe3968c4e3 [2020-11-30 00:13:08,505 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:13:08,546 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:13:08,550 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:13:08,552 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:13:08,553 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:13:08,554 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4d89a7f5-881c-4eec-9769-3e77bc0c60f1/bin/uautomizer/../../sv-benchmarks/c/locks/test_locks_15-1.c [2020-11-30 00:13:08,647 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4d89a7f5-881c-4eec-9769-3e77bc0c60f1/bin/uautomizer/data/a9d9523b1/ad540599dd4b411d97b8f05f2a5c7680/FLAGe6f59ab3f [2020-11-30 00:13:09,311 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:13:09,312 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4d89a7f5-881c-4eec-9769-3e77bc0c60f1/sv-benchmarks/c/locks/test_locks_15-1.c [2020-11-30 00:13:09,324 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4d89a7f5-881c-4eec-9769-3e77bc0c60f1/bin/uautomizer/data/a9d9523b1/ad540599dd4b411d97b8f05f2a5c7680/FLAGe6f59ab3f [2020-11-30 00:13:09,661 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4d89a7f5-881c-4eec-9769-3e77bc0c60f1/bin/uautomizer/data/a9d9523b1/ad540599dd4b411d97b8f05f2a5c7680 [2020-11-30 00:13:09,665 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:13:09,668 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-30 00:13:09,672 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:13:09,672 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:13:09,676 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:13:09,677 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:13:09" (1/1) ... [2020-11-30 00:13:09,683 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c03e7c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:13:09, skipping insertion in model container [2020-11-30 00:13:09,683 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:13:09" (1/1) ... [2020-11-30 00:13:09,692 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:13:09,736 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:13:09,981 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:13:09,995 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:13:10,044 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:13:10,063 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:13:10,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:13:10 WrapperNode [2020-11-30 00:13:10,064 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:13:10,065 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:13:10,065 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:13:10,065 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:13:10,086 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:13:10" (1/1) ... [2020-11-30 00:13:10,087 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:13:10" (1/1) ... [2020-11-30 00:13:10,108 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:13:10" (1/1) ... [2020-11-30 00:13:10,108 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:13:10" (1/1) ... [2020-11-30 00:13:10,137 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:13:10" (1/1) ... [2020-11-30 00:13:10,144 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:13:10" (1/1) ... [2020-11-30 00:13:10,147 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:13:10" (1/1) ... [2020-11-30 00:13:10,161 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:13:10,162 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:13:10,162 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:13:10,162 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:13:10,163 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:13:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4d89a7f5-881c-4eec-9769-3e77bc0c60f1/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 [2020-11-30 00:13:10,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-30 00:13:10,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:13:10,259 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-30 00:13:10,259 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-30 00:13:10,259 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-30 00:13:10,260 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-30 00:13:10,260 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-30 00:13:10,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:13:10,263 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-30 00:13:10,263 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-30 00:13:10,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-30 00:13:10,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 00:13:10,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:13:10,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2020-11-30 00:13:10,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2020-11-30 00:13:10,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 00:13:11,012 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:13:11,013 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-30 00:13:11,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:13:11 BoogieIcfgContainer [2020-11-30 00:13:11,016 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:13:11,021 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:13:11,021 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:13:11,024 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:13:11,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:13:09" (1/3) ... [2020-11-30 00:13:11,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3478b52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:13:11, skipping insertion in model container [2020-11-30 00:13:11,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:13:10" (2/3) ... [2020-11-30 00:13:11,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3478b52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:13:11, skipping insertion in model container [2020-11-30 00:13:11,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:13:11" (3/3) ... [2020-11-30 00:13:11,029 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_15-1.c [2020-11-30 00:13:11,041 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:13:11,047 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-30 00:13:11,059 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-30 00:13:11,088 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:13:11,089 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-30 00:13:11,089 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:13:11,089 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:13:11,090 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:13:11,090 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:13:11,090 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:13:11,090 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:13:11,109 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-11-30 00:13:11,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 00:13:11,120 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:13:11,121 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:13:11,121 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-30 00:13:11,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:13:11,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1650782030, now seen corresponding path program 1 times [2020-11-30 00:13:11,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:13:11,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [367508274] [2020-11-30 00:13:11,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4d89a7f5-881c-4eec-9769-3e77bc0c60f1/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-30 00:13:11,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:13:11,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-30 00:13:11,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:13:11,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:13:11,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:13:11,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:13:11,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [367508274] [2020-11-30 00:13:11,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:13:11,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-30 00:13:11,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946519121] [2020-11-30 00:13:11,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 00:13:11,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:13:11,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 00:13:11,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:13:11,358 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 2 states. [2020-11-30 00:13:11,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:13:11,395 INFO L93 Difference]: Finished difference Result 61 states and 105 transitions. [2020-11-30 00:13:11,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:13:11,396 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-11-30 00:13:11,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:13:11,406 INFO L225 Difference]: With dead ends: 61 [2020-11-30 00:13:11,407 INFO L226 Difference]: Without dead ends: 56 [2020-11-30 00:13:11,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:13:11,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-11-30 00:13:11,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-11-30 00:13:11,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-11-30 00:13:11,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 100 transitions. [2020-11-30 00:13:11,445 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 100 transitions. Word has length 9 [2020-11-30 00:13:11,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:13:11,445 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 100 transitions. [2020-11-30 00:13:11,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 00:13:11,446 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 100 transitions. [2020-11-30 00:13:11,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-30 00:13:11,447 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:13:11,447 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] [2020-11-30 00:13:11,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 00:13:11,665 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-30 00:13:11,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:13:11,666 INFO L82 PathProgramCache]: Analyzing trace with hash 868347282, now seen corresponding path program 1 times [2020-11-30 00:13:11,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:13:11,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1230152634] [2020-11-30 00:13:11,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4d89a7f5-881c-4eec-9769-3e77bc0c60f1/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-30 00:13:11,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:13:11,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:13:11,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:13:11,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:13:11,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:13:11,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:13:11,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1230152634] [2020-11-30 00:13:11,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:13:11,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-30 00:13:11,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416214528] [2020-11-30 00:13:11,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:13:11,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:13:11,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:13:11,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:13:11,848 INFO L87 Difference]: Start difference. First operand 56 states and 100 transitions. Second operand 3 states. [2020-11-30 00:13:11,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:13:11,879 INFO L93 Difference]: Finished difference Result 103 states and 190 transitions. [2020-11-30 00:13:11,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:13:11,880 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-11-30 00:13:11,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:13:11,883 INFO L225 Difference]: With dead ends: 103 [2020-11-30 00:13:11,883 INFO L226 Difference]: Without dead ends: 103 [2020-11-30 00:13:11,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:13:11,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-11-30 00:13:11,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 72. [2020-11-30 00:13:11,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-11-30 00:13:11,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 131 transitions. [2020-11-30 00:13:11,903 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 131 transitions. Word has length 27 [2020-11-30 00:13:11,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:13:11,905 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 131 transitions. [2020-11-30 00:13:11,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:13:11,906 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 131 transitions. [2020-11-30 00:13:11,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-30 00:13:11,908 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:13:11,909 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] [2020-11-30 00:13:12,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 00:13:12,112 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-30 00:13:12,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:13:12,113 INFO L82 PathProgramCache]: Analyzing trace with hash 868570234, now seen corresponding path program 1 times [2020-11-30 00:13:12,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:13:12,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [402496739] [2020-11-30 00:13:12,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4d89a7f5-881c-4eec-9769-3e77bc0c60f1/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-30 00:13:12,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:13:12,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:13:12,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:13:12,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:13:12,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:13:12,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:13:12,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [402496739] [2020-11-30 00:13:12,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:13:12,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-30 00:13:12,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416760739] [2020-11-30 00:13:12,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:13:12,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:13:12,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:13:12,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:13:12,262 INFO L87 Difference]: Start difference. First operand 72 states and 131 transitions. Second operand 3 states. [2020-11-30 00:13:12,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:13:12,287 INFO L93 Difference]: Finished difference Result 104 states and 190 transitions. [2020-11-30 00:13:12,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:13:12,288 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-11-30 00:13:12,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:13:12,289 INFO L225 Difference]: With dead ends: 104 [2020-11-30 00:13:12,289 INFO L226 Difference]: Without dead ends: 104 [2020-11-30 00:13:12,290 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:13:12,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-11-30 00:13:12,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2020-11-30 00:13:12,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-11-30 00:13:12,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 189 transitions. [2020-11-30 00:13:12,303 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 189 transitions. Word has length 27 [2020-11-30 00:13:12,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:13:12,303 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 189 transitions. [2020-11-30 00:13:12,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:13:12,303 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 189 transitions. [2020-11-30 00:13:12,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-30 00:13:12,304 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:13:12,305 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] [2020-11-30 00:13:12,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-30 00:13:12,524 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-30 00:13:12,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:13:12,524 INFO L82 PathProgramCache]: Analyzing trace with hash -820596460, now seen corresponding path program 1 times [2020-11-30 00:13:12,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:13:12,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2130119976] [2020-11-30 00:13:12,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4d89a7f5-881c-4eec-9769-3e77bc0c60f1/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-30 00:13:12,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:13:12,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:13:12,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:13:12,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:13:12,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:13:12,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:13:12,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2130119976] [2020-11-30 00:13:12,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:13:12,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-30 00:13:12,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154196216] [2020-11-30 00:13:12,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:13:12,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:13:12,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:13:12,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:13:12,633 INFO L87 Difference]: Start difference. First operand 103 states and 189 transitions. Second operand 3 states. [2020-11-30 00:13:12,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:13:12,666 INFO L93 Difference]: Finished difference Result 106 states and 190 transitions. [2020-11-30 00:13:12,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:13:12,667 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-11-30 00:13:12,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:13:12,668 INFO L225 Difference]: With dead ends: 106 [2020-11-30 00:13:12,669 INFO L226 Difference]: Without dead ends: 106 [2020-11-30 00:13:12,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:13:12,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-11-30 00:13:12,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2020-11-30 00:13:12,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-11-30 00:13:12,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 189 transitions. [2020-11-30 00:13:12,679 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 189 transitions. Word has length 27 [2020-11-30 00:13:12,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:13:12,679 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 189 transitions. [2020-11-30 00:13:12,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:13:12,680 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 189 transitions. [2020-11-30 00:13:12,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-30 00:13:12,681 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:13:12,681 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] [2020-11-30 00:13:12,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-30 00:13:12,895 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-30 00:13:12,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:13:12,895 INFO L82 PathProgramCache]: Analyzing trace with hash -820373508, now seen corresponding path program 1 times [2020-11-30 00:13:12,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:13:12,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1117674181] [2020-11-30 00:13:12,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4d89a7f5-881c-4eec-9769-3e77bc0c60f1/bin/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-30 00:13:13,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:13:13,008 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:13:13,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:13:13,064 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:13:13,156 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-30 00:13:13,156 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:13:13,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-30 00:13:13,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:13:13 BoogieIcfgContainer [2020-11-30 00:13:13,472 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:13:13,472 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:13:13,473 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:13:13,473 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:13:13,473 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:13:11" (3/4) ... [2020-11-30 00:13:13,477 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 00:13:13,477 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:13:13,479 INFO L168 Benchmark]: Toolchain (without parser) took 3810.41 ms. Allocated memory was 60.8 MB in the beginning and 86.0 MB in the end (delta: 25.2 MB). Free memory was 42.3 MB in the beginning and 61.8 MB in the end (delta: -19.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:13:13,481 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 60.8 MB. Free memory is still 43.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:13:13,482 INFO L168 Benchmark]: CACSL2BoogieTranslator took 392.25 ms. Allocated memory is still 60.8 MB. Free memory was 42.1 MB in the beginning and 30.8 MB in the end (delta: 11.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:13:13,483 INFO L168 Benchmark]: Boogie Preprocessor took 96.39 ms. Allocated memory is still 60.8 MB. Free memory was 30.8 MB in the beginning and 44.0 MB in the end (delta: -13.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:13:13,488 INFO L168 Benchmark]: RCFGBuilder took 854.05 ms. Allocated memory was 60.8 MB in the beginning and 86.0 MB in the end (delta: 25.2 MB). Free memory was 43.8 MB in the beginning and 61.2 MB in the end (delta: -17.4 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.1 GB. [2020-11-30 00:13:13,489 INFO L168 Benchmark]: TraceAbstraction took 2450.97 ms. Allocated memory is still 86.0 MB. Free memory was 60.7 MB in the beginning and 61.8 MB in the end (delta: -1.1 MB). Peak memory consumption was 35.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:13:13,489 INFO L168 Benchmark]: Witness Printer took 4.70 ms. Allocated memory is still 86.0 MB. Free memory is still 61.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:13:13,491 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 60.8 MB. Free memory is still 43.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 392.25 ms. Allocated memory is still 60.8 MB. Free memory was 42.1 MB in the beginning and 30.8 MB in the end (delta: 11.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 96.39 ms. Allocated memory is still 60.8 MB. Free memory was 30.8 MB in the beginning and 44.0 MB in the end (delta: -13.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 854.05 ms. Allocated memory was 60.8 MB in the beginning and 86.0 MB in the end (delta: 25.2 MB). Free memory was 43.8 MB in the beginning and 61.2 MB in the end (delta: -17.4 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2450.97 ms. Allocated memory is still 86.0 MB. Free memory was 60.7 MB in the beginning and 61.8 MB in the end (delta: -1.1 MB). Peak memory consumption was 35.5 MB. Max. memory is 16.1 GB. * Witness Printer took 4.70 ms. Allocated memory is still 86.0 MB. Free memory is still 61.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 3. Possible 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; VAL [p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147745792, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [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 VAL [cond=2147483648, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=0, lk4=0, lk5=0, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147745792, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L93] COND FALSE !(p1 != 0) VAL [cond=2147483648, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=0, lk4=0, lk5=0, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147745792, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L97] COND FALSE !(p2 != 0) VAL [cond=2147483648, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=0, lk4=0, lk5=0, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147745792, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L101] COND TRUE p3 != 0 [L102] lk3 = 1 VAL [cond=2147483648, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=0, lk5=0, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147745792, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L105] COND TRUE p4 != 0 [L106] lk4 = 1 VAL [cond=2147483648, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=0, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147745792, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L109] COND TRUE p5 != 0 [L110] lk5 = 1 VAL [cond=2147483648, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147745792, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L113] COND TRUE p6 != 0 [L114] lk6 = 1 VAL [cond=2147483648, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=0, lk8=0, lk9=0, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147745792, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L117] COND TRUE p7 != 0 [L118] lk7 = 1 VAL [cond=2147483648, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=0, lk9=0, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147745792, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L121] COND TRUE p8 != 0 [L122] lk8 = 1 VAL [cond=2147483648, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=0, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147745792, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L125] COND TRUE p9 != 0 [L126] lk9 = 1 VAL [cond=2147483648, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147745792, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L129] COND FALSE !(p10 != 0) VAL [cond=2147483648, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147745792, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L133] COND TRUE p11 != 0 [L134] lk11 = 1 VAL [cond=2147483648, lk1=0, lk10=0, lk11=1, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147745792, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L137] COND TRUE p12 != 0 [L138] lk12 = 1 VAL [cond=2147483648, lk1=0, lk10=0, lk11=1, lk12=1, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147745792, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L141] COND TRUE p13 != 0 [L142] lk13 = 1 VAL [cond=2147483648, lk1=0, lk10=0, lk11=1, lk12=1, lk13=1, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147745792, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L145] COND TRUE p14 != 0 [L146] lk14 = 1 VAL [cond=2147483648, lk1=0, lk10=0, lk11=1, lk12=1, lk13=1, lk14=1, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147745792, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L149] COND TRUE p15 != 0 [L150] lk15 = 1 VAL [cond=2147483648, lk1=0, lk10=0, lk11=1, lk12=1, lk13=1, lk14=1, lk15=1, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147745792, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L155] COND FALSE !(p1 != 0) VAL [cond=2147483648, lk1=0, lk10=0, lk11=1, lk12=1, lk13=1, lk14=1, lk15=1, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147745792, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L160] COND FALSE !(p2 != 0) VAL [cond=2147483648, lk1=0, lk10=0, lk11=1, lk12=1, lk13=1, lk14=1, lk15=1, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147745792, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [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, 65 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.2s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 491 SDtfs, 220 SDslu, 282 SDs, 0 SdLazy, 16 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 176 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=105occurred in iteration=4, 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, 4 MinimizatonAttempts, 33 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 117 NumberOfCodeBlocks, 117 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 172 ConstructedInterpolants, 0 QuantifiedInterpolants, 9748 SizeOfPredicates, 0 NumberOfNonLiveVariables, 403 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...