./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_46164d23-04cd-4eee-9e35-d0de80b8c150/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_46164d23-04cd-4eee-9e35-d0de80b8c150/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_46164d23-04cd-4eee-9e35-d0de80b8c150/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_46164d23-04cd-4eee-9e35-d0de80b8c150/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/locks/test_locks_15-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_46164d23-04cd-4eee-9e35-d0de80b8c150/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_46164d23-04cd-4eee-9e35-d0de80b8c150/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_46164d23-04cd-4eee-9e35-d0de80b8c150/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_46164d23-04cd-4eee-9e35-d0de80b8c150/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_46164d23-04cd-4eee-9e35-d0de80b8c150/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_46164d23-04cd-4eee-9e35-d0de80b8c150/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/locks/test_locks_15-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_46164d23-04cd-4eee-9e35-d0de80b8c150/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_46164d23-04cd-4eee-9e35-d0de80b8c150/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 [2020-11-28 03:11:05,441 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:11:05,444 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:11:05,505 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:11:05,523 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:11:05,525 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:11:05,528 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:11:05,531 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:11:05,534 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:11:05,541 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:11:05,543 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:11:05,548 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:11:05,548 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:11:05,552 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:11:05,555 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:11:05,557 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:11:05,559 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:11:05,561 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:11:05,568 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:11:05,577 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:11:05,581 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:11:05,582 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:11:05,585 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:11:05,587 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:11:05,591 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:11:05,592 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:11:05,593 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:11:05,595 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:11:05,596 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:11:05,604 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:11:05,605 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:11:05,606 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:11:05,610 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:11:05,611 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:11:05,613 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:11:05,613 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:11:05,614 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:11:05,615 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:11:05,615 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:11:05,618 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:11:05,619 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:11:05,622 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_46164d23-04cd-4eee-9e35-d0de80b8c150/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-28 03:11:05,667 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:11:05,671 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:11:05,674 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:11:05,675 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:11:05,675 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:11:05,676 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:11:05,676 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:11:05,676 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:11:05,676 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:11:05,677 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:11:05,678 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:11:05,678 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-28 03:11:05,679 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-28 03:11:05,679 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-28 03:11:05,679 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:11:05,679 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 03:11:05,680 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:11:05,680 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:11:05,680 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:11:05,680 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:11:05,681 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:11:05,681 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:11:05,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:11:05,682 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:11:05,682 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:11:05,682 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:11:05,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:11:05,683 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:11:05,683 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_46164d23-04cd-4eee-9e35-d0de80b8c150/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_46164d23-04cd-4eee-9e35-d0de80b8c150/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 04dfa849b43716e8587b0fc4953cadbe3968c4e3 [2020-11-28 03:11:06,009 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:11:06,035 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:11:06,038 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:11:06,040 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:11:06,041 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:11:06,042 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_46164d23-04cd-4eee-9e35-d0de80b8c150/bin/uautomizer/../../sv-benchmarks/c/locks/test_locks_15-1.c [2020-11-28 03:11:06,120 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_46164d23-04cd-4eee-9e35-d0de80b8c150/bin/uautomizer/data/95a6cedf5/916afb9430184939bd5969db3b75804a/FLAG4a8e878d2 [2020-11-28 03:11:06,822 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:11:06,823 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_46164d23-04cd-4eee-9e35-d0de80b8c150/sv-benchmarks/c/locks/test_locks_15-1.c [2020-11-28 03:11:06,833 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_46164d23-04cd-4eee-9e35-d0de80b8c150/bin/uautomizer/data/95a6cedf5/916afb9430184939bd5969db3b75804a/FLAG4a8e878d2 [2020-11-28 03:11:07,144 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_46164d23-04cd-4eee-9e35-d0de80b8c150/bin/uautomizer/data/95a6cedf5/916afb9430184939bd5969db3b75804a [2020-11-28 03:11:07,150 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:11:07,153 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-28 03:11:07,158 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:11:07,158 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:11:07,163 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:11:07,164 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:11:07" (1/1) ... [2020-11-28 03:11:07,166 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2304a3f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:07, skipping insertion in model container [2020-11-28 03:11:07,167 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:11:07" (1/1) ... [2020-11-28 03:11:07,177 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:11:07,227 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:11:07,463 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:11:07,480 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:11:07,535 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:11:07,552 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:11:07,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:07 WrapperNode [2020-11-28 03:11:07,553 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:11:07,554 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:11:07,555 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:11:07,555 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:11:07,570 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:07" (1/1) ... [2020-11-28 03:11:07,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:07" (1/1) ... [2020-11-28 03:11:07,580 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:07" (1/1) ... [2020-11-28 03:11:07,580 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:07" (1/1) ... [2020-11-28 03:11:07,591 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:07" (1/1) ... [2020-11-28 03:11:07,600 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:07" (1/1) ... [2020-11-28 03:11:07,603 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:07" (1/1) ... [2020-11-28 03:11:07,607 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:11:07,609 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:11:07,609 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:11:07,609 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:11:07,610 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_46164d23-04cd-4eee-9e35-d0de80b8c150/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:11:07,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-28 03:11:07,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:11:07,706 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-28 03:11:07,706 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-28 03:11:07,707 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-28 03:11:07,707 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-28 03:11:07,708 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-28 03:11:07,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:11:07,708 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-28 03:11:07,710 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-28 03:11:07,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-28 03:11:07,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:11:07,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:11:07,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:11:07,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 03:11:07,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:11:08,552 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:11:08,552 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-28 03:11:08,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:11:08 BoogieIcfgContainer [2020-11-28 03:11:08,555 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:11:08,559 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:11:08,559 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:11:08,564 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:11:08,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:11:07" (1/3) ... [2020-11-28 03:11:08,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14d5590d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:11:08, skipping insertion in model container [2020-11-28 03:11:08,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:07" (2/3) ... [2020-11-28 03:11:08,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14d5590d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:11:08, skipping insertion in model container [2020-11-28 03:11:08,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:11:08" (3/3) ... [2020-11-28 03:11:08,569 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_15-1.c [2020-11-28 03:11:08,584 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:11:08,590 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-28 03:11:08,605 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-28 03:11:08,642 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:11:08,642 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-28 03:11:08,642 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:11:08,643 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:11:08,643 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:11:08,643 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:11:08,643 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:11:08,643 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:11:08,666 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-11-28 03:11:08,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 03:11:08,680 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:11:08,681 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:11:08,682 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:11:08,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:08,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1650782030, now seen corresponding path program 1 times [2020-11-28 03:11:08,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:11:08,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397075325] [2020-11-28 03:11:08,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:11:08,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:09,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:11:09,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:09,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:11:09,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397075325] [2020-11-28 03:11:09,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:11:09,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:11:09,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309951698] [2020-11-28 03:11:09,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:11:09,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:11:09,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:11:09,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:11:09,112 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 3 states. [2020-11-28 03:11:09,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:11:09,181 INFO L93 Difference]: Finished difference Result 61 states and 105 transitions. [2020-11-28 03:11:09,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:11:09,186 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-28 03:11:09,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:11:09,213 INFO L225 Difference]: With dead ends: 61 [2020-11-28 03:11:09,214 INFO L226 Difference]: Without dead ends: 56 [2020-11-28 03:11:09,216 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 [2020-11-28 03:11:09,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-11-28 03:11:09,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-11-28 03:11:09,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-11-28 03:11:09,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 100 transitions. [2020-11-28 03:11:09,263 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 100 transitions. Word has length 9 [2020-11-28 03:11:09,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:11:09,264 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 100 transitions. [2020-11-28 03:11:09,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:11:09,264 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 100 transitions. [2020-11-28 03:11:09,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-28 03:11:09,266 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:11:09,266 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] [2020-11-28 03:11:09,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:11:09,267 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:11:09,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:09,267 INFO L82 PathProgramCache]: Analyzing trace with hash 868347282, now seen corresponding path program 1 times [2020-11-28 03:11:09,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:11:09,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453310634] [2020-11-28 03:11:09,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:11:09,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:09,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:11:09,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:09,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:11:09,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453310634] [2020-11-28 03:11:09,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:11:09,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:11:09,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419777484] [2020-11-28 03:11:09,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:11:09,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:11:09,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:11:09,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:11:09,525 INFO L87 Difference]: Start difference. First operand 56 states and 100 transitions. Second operand 4 states. [2020-11-28 03:11:10,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:11:10,105 INFO L93 Difference]: Finished difference Result 103 states and 190 transitions. [2020-11-28 03:11:10,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:11:10,106 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-11-28 03:11:10,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:11:10,109 INFO L225 Difference]: With dead ends: 103 [2020-11-28 03:11:10,109 INFO L226 Difference]: Without dead ends: 103 [2020-11-28 03:11:10,110 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:11:10,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-11-28 03:11:10,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 72. [2020-11-28 03:11:10,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-11-28 03:11:10,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 131 transitions. [2020-11-28 03:11:10,134 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 131 transitions. Word has length 27 [2020-11-28 03:11:10,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:11:10,137 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 131 transitions. [2020-11-28 03:11:10,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:11:10,138 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 131 transitions. [2020-11-28 03:11:10,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-28 03:11:10,140 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:11:10,140 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] [2020-11-28 03:11:10,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:11:10,141 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:11:10,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:10,143 INFO L82 PathProgramCache]: Analyzing trace with hash 868570234, now seen corresponding path program 1 times [2020-11-28 03:11:10,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:11:10,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347678655] [2020-11-28 03:11:10,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:11:10,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:10,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:11:10,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:10,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:11:10,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347678655] [2020-11-28 03:11:10,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:11:10,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:11:10,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953483444] [2020-11-28 03:11:10,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:11:10,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:11:10,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:11:10,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:11:10,341 INFO L87 Difference]: Start difference. First operand 72 states and 131 transitions. Second operand 4 states. [2020-11-28 03:11:10,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:11:10,683 INFO L93 Difference]: Finished difference Result 104 states and 190 transitions. [2020-11-28 03:11:10,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:11:10,685 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-11-28 03:11:10,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:11:10,687 INFO L225 Difference]: With dead ends: 104 [2020-11-28 03:11:10,687 INFO L226 Difference]: Without dead ends: 104 [2020-11-28 03:11:10,687 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 [2020-11-28 03:11:10,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-11-28 03:11:10,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2020-11-28 03:11:10,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-11-28 03:11:10,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 189 transitions. [2020-11-28 03:11:10,714 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 189 transitions. Word has length 27 [2020-11-28 03:11:10,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:11:10,714 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 189 transitions. [2020-11-28 03:11:10,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:11:10,715 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 189 transitions. [2020-11-28 03:11:10,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-28 03:11:10,716 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:11:10,716 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] [2020-11-28 03:11:10,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:11:10,717 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:11:10,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:10,717 INFO L82 PathProgramCache]: Analyzing trace with hash -820596460, now seen corresponding path program 1 times [2020-11-28 03:11:10,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:11:10,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682338309] [2020-11-28 03:11:10,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:11:10,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:10,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:11:10,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:10,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:11:10,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682338309] [2020-11-28 03:11:10,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:11:10,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:11:10,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678730031] [2020-11-28 03:11:10,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:11:10,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:11:10,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:11:10,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:11:10,805 INFO L87 Difference]: Start difference. First operand 103 states and 189 transitions. Second operand 4 states. [2020-11-28 03:11:11,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:11:11,119 INFO L93 Difference]: Finished difference Result 106 states and 190 transitions. [2020-11-28 03:11:11,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:11:11,120 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-11-28 03:11:11,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:11:11,122 INFO L225 Difference]: With dead ends: 106 [2020-11-28 03:11:11,122 INFO L226 Difference]: Without dead ends: 106 [2020-11-28 03:11:11,123 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 [2020-11-28 03:11:11,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-11-28 03:11:11,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2020-11-28 03:11:11,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-11-28 03:11:11,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 189 transitions. [2020-11-28 03:11:11,146 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 189 transitions. Word has length 27 [2020-11-28 03:11:11,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:11:11,147 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 189 transitions. [2020-11-28 03:11:11,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:11:11,147 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 189 transitions. [2020-11-28 03:11:11,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-28 03:11:11,150 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:11:11,150 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] [2020-11-28 03:11:11,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 03:11:11,150 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:11:11,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:11,151 INFO L82 PathProgramCache]: Analyzing trace with hash -820373508, now seen corresponding path program 1 times [2020-11-28 03:11:11,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:11:11,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873885506] [2020-11-28 03:11:11,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:11:11,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:11:11,201 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:11:11,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:11:11,238 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:11:11,290 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:11:11,290 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:11:11,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 03:11:11,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:11:11 BoogieIcfgContainer [2020-11-28 03:11:11,394 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:11:11,397 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:11:11,398 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:11:11,398 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:11:11,398 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:11:08" (3/4) ... [2020-11-28 03:11:11,402 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 03:11:11,402 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:11:11,404 INFO L168 Benchmark]: Toolchain (without parser) took 4250.06 ms. Allocated memory is still 142.6 MB. Free memory was 119.7 MB in the beginning and 81.6 MB in the end (delta: 38.1 MB). Peak memory consumption was 38.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:11,405 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 96.5 MB. Free memory was 54.6 MB in the beginning and 54.6 MB in the end (delta: 52.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:11:11,406 INFO L168 Benchmark]: CACSL2BoogieTranslator took 395.58 ms. Allocated memory is still 142.6 MB. Free memory was 119.2 MB in the beginning and 118.3 MB in the end (delta: 971.8 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:11,407 INFO L168 Benchmark]: Boogie Preprocessor took 53.23 ms. Allocated memory is still 142.6 MB. Free memory was 118.3 MB in the beginning and 116.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:11,408 INFO L168 Benchmark]: RCFGBuilder took 946.64 ms. Allocated memory is still 142.6 MB. Free memory was 116.3 MB in the beginning and 91.1 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:11,409 INFO L168 Benchmark]: TraceAbstraction took 2835.62 ms. Allocated memory is still 142.6 MB. Free memory was 90.4 MB in the beginning and 81.6 MB in the end (delta: 8.8 MB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:11,409 INFO L168 Benchmark]: Witness Printer took 4.92 ms. Allocated memory is still 142.6 MB. Free memory is still 81.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:11:11,417 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 96.5 MB. Free memory was 54.6 MB in the beginning and 54.6 MB in the end (delta: 52.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 395.58 ms. Allocated memory is still 142.6 MB. Free memory was 119.2 MB in the beginning and 118.3 MB in the end (delta: 971.8 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 53.23 ms. Allocated memory is still 142.6 MB. Free memory was 118.3 MB in the beginning and 116.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 946.64 ms. Allocated memory is still 142.6 MB. Free memory was 116.3 MB in the beginning and 91.1 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2835.62 ms. Allocated memory is still 142.6 MB. Free memory was 90.4 MB in the beginning and 81.6 MB in the end (delta: 8.8 MB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. * Witness Printer took 4.92 ms. Allocated memory is still 142.6 MB. Free memory is still 81.6 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: 2.6s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 1.3s, 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, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s 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, 0.5s 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 [2020-11-28 03:11:14,588 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:11:14,591 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:11:14,651 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:11:14,652 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:11:14,659 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:11:14,662 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:11:14,668 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:11:14,672 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:11:14,680 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:11:14,682 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:11:14,691 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:11:14,691 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:11:14,696 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:11:14,698 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:11:14,700 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:11:14,702 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:11:14,707 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:11:14,712 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:11:14,721 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:11:14,731 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:11:14,733 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:11:14,736 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:11:14,739 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:11:14,744 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:11:14,748 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:11:14,749 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:11:14,751 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:11:14,753 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:11:14,754 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:11:14,755 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:11:14,756 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:11:14,759 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:11:14,760 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:11:14,762 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:11:14,763 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:11:14,764 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:11:14,765 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:11:14,765 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:11:14,768 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:11:14,769 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:11:14,770 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_46164d23-04cd-4eee-9e35-d0de80b8c150/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2020-11-28 03:11:14,832 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:11:14,833 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:11:14,837 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:11:14,838 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:11:14,838 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:11:14,839 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:11:14,839 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:11:14,840 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:11:14,840 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:11:14,841 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:11:14,842 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:11:14,843 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-28 03:11:14,843 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-28 03:11:14,843 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-28 03:11:14,844 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:11:14,844 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 03:11:14,844 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 03:11:14,845 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 03:11:14,845 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:11:14,846 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:11:14,846 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:11:14,846 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:11:14,847 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:11:14,847 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:11:14,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:11:14,848 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:11:14,848 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:11:14,849 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-28 03:11:14,859 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 03:11:14,859 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:11:14,860 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 03:11:14,860 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_46164d23-04cd-4eee-9e35-d0de80b8c150/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_46164d23-04cd-4eee-9e35-d0de80b8c150/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 04dfa849b43716e8587b0fc4953cadbe3968c4e3 [2020-11-28 03:11:15,371 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:11:15,414 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:11:15,417 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:11:15,419 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:11:15,420 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:11:15,421 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_46164d23-04cd-4eee-9e35-d0de80b8c150/bin/uautomizer/../../sv-benchmarks/c/locks/test_locks_15-1.c [2020-11-28 03:11:15,502 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_46164d23-04cd-4eee-9e35-d0de80b8c150/bin/uautomizer/data/f5768ea1f/bdbdbf9a7d094428acd21974d9c78261/FLAG60965dbcc [2020-11-28 03:11:16,134 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:11:16,135 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_46164d23-04cd-4eee-9e35-d0de80b8c150/sv-benchmarks/c/locks/test_locks_15-1.c [2020-11-28 03:11:16,157 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_46164d23-04cd-4eee-9e35-d0de80b8c150/bin/uautomizer/data/f5768ea1f/bdbdbf9a7d094428acd21974d9c78261/FLAG60965dbcc [2020-11-28 03:11:16,527 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_46164d23-04cd-4eee-9e35-d0de80b8c150/bin/uautomizer/data/f5768ea1f/bdbdbf9a7d094428acd21974d9c78261 [2020-11-28 03:11:16,530 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:11:16,534 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-28 03:11:16,539 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:11:16,539 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:11:16,544 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:11:16,546 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:11:16" (1/1) ... [2020-11-28 03:11:16,548 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7815561f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:16, skipping insertion in model container [2020-11-28 03:11:16,548 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:11:16" (1/1) ... [2020-11-28 03:11:16,560 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:11:16,609 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:11:16,868 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:11:16,891 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:11:16,965 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:11:17,041 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:11:17,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:17 WrapperNode [2020-11-28 03:11:17,042 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:11:17,045 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:11:17,047 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:11:17,047 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:11:17,064 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:17" (1/1) ... [2020-11-28 03:11:17,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:17" (1/1) ... [2020-11-28 03:11:17,094 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:17" (1/1) ... [2020-11-28 03:11:17,094 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:17" (1/1) ... [2020-11-28 03:11:17,134 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:17" (1/1) ... [2020-11-28 03:11:17,143 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:17" (1/1) ... [2020-11-28 03:11:17,158 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:17" (1/1) ... [2020-11-28 03:11:17,164 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:11:17,170 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:11:17,171 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:11:17,171 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:11:17,172 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_46164d23-04cd-4eee-9e35-d0de80b8c150/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:11:17,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-28 03:11:17,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:11:17,264 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-28 03:11:17,264 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-28 03:11:17,265 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-28 03:11:17,265 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-28 03:11:17,265 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-28 03:11:17,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:11:17,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-28 03:11:17,266 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-28 03:11:17,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-28 03:11:17,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-28 03:11:17,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:11:17,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2020-11-28 03:11:17,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2020-11-28 03:11:17,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:11:18,069 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:11:18,070 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-28 03:11:18,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:11:18 BoogieIcfgContainer [2020-11-28 03:11:18,072 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:11:18,075 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:11:18,075 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:11:18,079 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:11:18,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:11:16" (1/3) ... [2020-11-28 03:11:18,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69790424 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:11:18, skipping insertion in model container [2020-11-28 03:11:18,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:17" (2/3) ... [2020-11-28 03:11:18,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69790424 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:11:18, skipping insertion in model container [2020-11-28 03:11:18,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:11:18" (3/3) ... [2020-11-28 03:11:18,084 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_15-1.c [2020-11-28 03:11:18,099 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:11:18,105 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-28 03:11:18,121 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-28 03:11:18,147 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:11:18,148 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-28 03:11:18,148 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:11:18,149 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:11:18,149 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:11:18,149 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:11:18,149 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:11:18,150 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:11:18,168 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-11-28 03:11:18,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 03:11:18,179 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:11:18,180 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:11:18,181 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:11:18,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:18,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1650782030, now seen corresponding path program 1 times [2020-11-28 03:11:18,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:11:18,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [813365165] [2020-11-28 03:11:18,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_46164d23-04cd-4eee-9e35-d0de80b8c150/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 [2020-11-28 03:11:18,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:18,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-28 03:11:18,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:11:18,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:11:18,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:11:18,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:11:18,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [813365165] [2020-11-28 03:11:18,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:11:18,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-28 03:11:18,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637896237] [2020-11-28 03:11:18,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:11:18,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:11:18,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:11:18,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:11:18,425 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 2 states. [2020-11-28 03:11:18,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:11:18,460 INFO L93 Difference]: Finished difference Result 61 states and 105 transitions. [2020-11-28 03:11:18,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:11:18,462 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-11-28 03:11:18,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:11:18,483 INFO L225 Difference]: With dead ends: 61 [2020-11-28 03:11:18,483 INFO L226 Difference]: Without dead ends: 56 [2020-11-28 03:11:18,485 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 [2020-11-28 03:11:18,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-11-28 03:11:18,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-11-28 03:11:18,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-11-28 03:11:18,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 100 transitions. [2020-11-28 03:11:18,557 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 100 transitions. Word has length 9 [2020-11-28 03:11:18,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:11:18,558 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 100 transitions. [2020-11-28 03:11:18,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:11:18,558 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 100 transitions. [2020-11-28 03:11:18,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-28 03:11:18,561 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:11:18,561 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] [2020-11-28 03:11:18,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 03:11:18,782 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:11:18,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:18,787 INFO L82 PathProgramCache]: Analyzing trace with hash 868347282, now seen corresponding path program 1 times [2020-11-28 03:11:18,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:11:18,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [342205873] [2020-11-28 03:11:18,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_46164d23-04cd-4eee-9e35-d0de80b8c150/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 [2020-11-28 03:11:18,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:18,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:11:18,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:11:19,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:11:19,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:11:19,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:11:19,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [342205873] [2020-11-28 03:11:19,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:11:19,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-28 03:11:19,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006983933] [2020-11-28 03:11:19,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:11:19,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:11:19,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:11:19,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:11:19,048 INFO L87 Difference]: Start difference. First operand 56 states and 100 transitions. Second operand 3 states. [2020-11-28 03:11:19,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:11:19,098 INFO L93 Difference]: Finished difference Result 103 states and 190 transitions. [2020-11-28 03:11:19,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:11:19,099 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-11-28 03:11:19,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:11:19,104 INFO L225 Difference]: With dead ends: 103 [2020-11-28 03:11:19,105 INFO L226 Difference]: Without dead ends: 103 [2020-11-28 03:11:19,106 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 [2020-11-28 03:11:19,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-11-28 03:11:19,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 72. [2020-11-28 03:11:19,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-11-28 03:11:19,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 131 transitions. [2020-11-28 03:11:19,138 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 131 transitions. Word has length 27 [2020-11-28 03:11:19,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:11:19,139 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 131 transitions. [2020-11-28 03:11:19,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:11:19,141 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 131 transitions. [2020-11-28 03:11:19,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-28 03:11:19,143 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:11:19,144 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] [2020-11-28 03:11:19,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-28 03:11:19,350 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:11:19,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:19,351 INFO L82 PathProgramCache]: Analyzing trace with hash 868570234, now seen corresponding path program 1 times [2020-11-28 03:11:19,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:11:19,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1198176056] [2020-11-28 03:11:19,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_46164d23-04cd-4eee-9e35-d0de80b8c150/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 [2020-11-28 03:11:19,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:19,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:11:19,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:11:19,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:11:19,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:11:19,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:11:19,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1198176056] [2020-11-28 03:11:19,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:11:19,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-28 03:11:19,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232368599] [2020-11-28 03:11:19,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:11:19,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:11:19,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:11:19,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:11:19,528 INFO L87 Difference]: Start difference. First operand 72 states and 131 transitions. Second operand 3 states. [2020-11-28 03:11:19,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:11:19,573 INFO L93 Difference]: Finished difference Result 104 states and 190 transitions. [2020-11-28 03:11:19,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:11:19,574 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-11-28 03:11:19,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:11:19,576 INFO L225 Difference]: With dead ends: 104 [2020-11-28 03:11:19,576 INFO L226 Difference]: Without dead ends: 104 [2020-11-28 03:11:19,577 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 [2020-11-28 03:11:19,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-11-28 03:11:19,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2020-11-28 03:11:19,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-11-28 03:11:19,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 189 transitions. [2020-11-28 03:11:19,605 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 189 transitions. Word has length 27 [2020-11-28 03:11:19,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:11:19,606 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 189 transitions. [2020-11-28 03:11:19,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:11:19,606 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 189 transitions. [2020-11-28 03:11:19,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-28 03:11:19,608 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:11:19,609 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] [2020-11-28 03:11:19,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-28 03:11:19,822 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:11:19,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:19,823 INFO L82 PathProgramCache]: Analyzing trace with hash -820596460, now seen corresponding path program 1 times [2020-11-28 03:11:19,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:11:19,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1217797094] [2020-11-28 03:11:19,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_46164d23-04cd-4eee-9e35-d0de80b8c150/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 [2020-11-28 03:11:19,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:19,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:11:19,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:11:19,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:11:19,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:11:19,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:11:19,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1217797094] [2020-11-28 03:11:20,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:11:20,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-28 03:11:20,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020699826] [2020-11-28 03:11:20,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:11:20,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:11:20,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:11:20,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:11:20,005 INFO L87 Difference]: Start difference. First operand 103 states and 189 transitions. Second operand 3 states. [2020-11-28 03:11:20,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:11:20,047 INFO L93 Difference]: Finished difference Result 106 states and 190 transitions. [2020-11-28 03:11:20,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:11:20,048 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-11-28 03:11:20,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:11:20,050 INFO L225 Difference]: With dead ends: 106 [2020-11-28 03:11:20,050 INFO L226 Difference]: Without dead ends: 106 [2020-11-28 03:11:20,050 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 [2020-11-28 03:11:20,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-11-28 03:11:20,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2020-11-28 03:11:20,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-11-28 03:11:20,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 189 transitions. [2020-11-28 03:11:20,076 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 189 transitions. Word has length 27 [2020-11-28 03:11:20,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:11:20,077 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 189 transitions. [2020-11-28 03:11:20,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:11:20,077 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 189 transitions. [2020-11-28 03:11:20,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-28 03:11:20,078 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:11:20,079 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] [2020-11-28 03:11:20,300 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-28 03:11:20,301 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:11:20,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:20,301 INFO L82 PathProgramCache]: Analyzing trace with hash -820373508, now seen corresponding path program 1 times [2020-11-28 03:11:20,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:11:20,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1709182235] [2020-11-28 03:11:20,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_46164d23-04cd-4eee-9e35-d0de80b8c150/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 [2020-11-28 03:11:20,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:11:20,418 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:11:20,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:11:20,489 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:11:20,566 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-28 03:11:20,566 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:11:20,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-28 03:11:20,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:11:20 BoogieIcfgContainer [2020-11-28 03:11:20,888 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:11:20,889 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:11:20,889 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:11:20,889 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:11:20,890 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:11:18" (3/4) ... [2020-11-28 03:11:20,894 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 03:11:20,894 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:11:20,904 INFO L168 Benchmark]: Toolchain (without parser) took 4361.61 ms. Allocated memory was 58.7 MB in the beginning and 94.4 MB in the end (delta: 35.7 MB). Free memory was 37.1 MB in the beginning and 54.6 MB in the end (delta: -17.5 MB). Peak memory consumption was 16.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:20,905 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 58.7 MB. Free memory was 40.3 MB in the beginning and 40.3 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:11:20,906 INFO L168 Benchmark]: CACSL2BoogieTranslator took 505.53 ms. Allocated memory is still 58.7 MB. Free memory was 36.8 MB in the beginning and 41.7 MB in the end (delta: -4.9 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:20,907 INFO L168 Benchmark]: Boogie Preprocessor took 123.83 ms. Allocated memory is still 58.7 MB. Free memory was 41.7 MB in the beginning and 39.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:20,908 INFO L168 Benchmark]: RCFGBuilder took 902.32 ms. Allocated memory was 58.7 MB in the beginning and 77.6 MB in the end (delta: 18.9 MB). Free memory was 39.7 MB in the beginning and 47.0 MB in the end (delta: -7.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:20,909 INFO L168 Benchmark]: TraceAbstraction took 2813.75 ms. Allocated memory was 77.6 MB in the beginning and 94.4 MB in the end (delta: 16.8 MB). Free memory was 46.4 MB in the beginning and 55.3 MB in the end (delta: -8.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:20,910 INFO L168 Benchmark]: Witness Printer took 5.30 ms. Allocated memory is still 94.4 MB. Free memory was 55.3 MB in the beginning and 54.6 MB in the end (delta: 659.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:11:20,921 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 58.7 MB. Free memory was 40.3 MB in the beginning and 40.3 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 505.53 ms. Allocated memory is still 58.7 MB. Free memory was 36.8 MB in the beginning and 41.7 MB in the end (delta: -4.9 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 123.83 ms. Allocated memory is still 58.7 MB. Free memory was 41.7 MB in the beginning and 39.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 902.32 ms. Allocated memory was 58.7 MB in the beginning and 77.6 MB in the end (delta: 18.9 MB). Free memory was 39.7 MB in the beginning and 47.0 MB in the end (delta: -7.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2813.75 ms. Allocated memory was 77.6 MB in the beginning and 94.4 MB in the end (delta: 16.8 MB). Free memory was 46.4 MB in the beginning and 55.3 MB in the end (delta: -8.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. * Witness Printer took 5.30 ms. Allocated memory is still 94.4 MB. Free memory was 55.3 MB in the beginning and 54.6 MB in the end (delta: 659.8 kB). 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: 2.6s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, 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: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 33 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.2s 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...