./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/parallel-bakery-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b800a1-7955-4784-8123-431650577542/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b800a1-7955-4784-8123-431650577542/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b800a1-7955-4784-8123-431650577542/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b800a1-7955-4784-8123-431650577542/bin/uautomizer-ug76WZFUDN/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-bakery-4.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b800a1-7955-4784-8123-431650577542/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b800a1-7955-4784-8123-431650577542/bin/uautomizer-ug76WZFUDN --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 39dcc47a23129180b44ef3e235976e9c499f5290fa3f0e6dd106879ae94f5ae2 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 10:33:27,018 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:33:27,021 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:33:27,065 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:33:27,066 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:33:27,070 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:33:27,073 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:33:27,077 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:33:27,079 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:33:27,085 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:33:27,086 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:33:27,088 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:33:27,089 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:33:27,092 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:33:27,094 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:33:27,098 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:33:27,099 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:33:27,101 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:33:27,102 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:33:27,109 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:33:27,111 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:33:27,114 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:33:27,115 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:33:27,116 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:33:27,126 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:33:27,128 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:33:27,128 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:33:27,130 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:33:27,131 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:33:27,132 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:33:27,133 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:33:27,134 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:33:27,136 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:33:27,138 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:33:27,139 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:33:27,139 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:33:27,140 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:33:27,141 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:33:27,141 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:33:27,143 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:33:27,144 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:33:27,145 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b800a1-7955-4784-8123-431650577542/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-20 10:33:27,178 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:33:27,178 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:33:27,179 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:33:27,179 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:33:27,180 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:33:27,180 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:33:27,181 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:33:27,181 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:33:27,182 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:33:27,182 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:33:27,182 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:33:27,183 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 10:33:27,183 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:33:27,183 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:33:27,183 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:33:27,184 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 10:33:27,187 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 10:33:27,187 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 10:33:27,187 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:33:27,188 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 10:33:27,188 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:33:27,188 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:33:27,189 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:33:27,189 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:33:27,190 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:33:27,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:33:27,190 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:33:27,191 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:33:27,192 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:33:27,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:33:27,193 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_worker_vcloud-master_on_vcloud-master/run_dir_e1b800a1-7955-4784-8123-431650577542/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b800a1-7955-4784-8123-431650577542/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39dcc47a23129180b44ef3e235976e9c499f5290fa3f0e6dd106879ae94f5ae2 [2022-11-20 10:33:27,575 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:33:27,616 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:33:27,619 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:33:27,622 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:33:27,623 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:33:27,624 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b800a1-7955-4784-8123-431650577542/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/parallel-bakery-4.wvr.c [2022-11-20 10:33:30,847 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:33:31,088 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:33:31,090 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b800a1-7955-4784-8123-431650577542/sv-benchmarks/c/weaver/parallel-bakery-4.wvr.c [2022-11-20 10:33:31,106 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b800a1-7955-4784-8123-431650577542/bin/uautomizer-ug76WZFUDN/data/23983d6b0/1941e454e5404b1b9b6a2ace5a948c9f/FLAG6ecb35113 [2022-11-20 10:33:31,130 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b800a1-7955-4784-8123-431650577542/bin/uautomizer-ug76WZFUDN/data/23983d6b0/1941e454e5404b1b9b6a2ace5a948c9f [2022-11-20 10:33:31,137 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:33:31,140 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:33:31,144 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:33:31,144 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:33:31,151 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:33:31,152 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:33:31" (1/1) ... [2022-11-20 10:33:31,154 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bb25235 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:31, skipping insertion in model container [2022-11-20 10:33:31,154 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:33:31" (1/1) ... [2022-11-20 10:33:31,193 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:33:31,262 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:33:31,577 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b800a1-7955-4784-8123-431650577542/sv-benchmarks/c/weaver/parallel-bakery-4.wvr.c[7978,7991] [2022-11-20 10:33:31,586 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:33:31,604 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:33:31,684 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b800a1-7955-4784-8123-431650577542/sv-benchmarks/c/weaver/parallel-bakery-4.wvr.c[7978,7991] [2022-11-20 10:33:31,694 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:33:31,711 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:33:31,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:31 WrapperNode [2022-11-20 10:33:31,712 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:33:31,714 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:33:31,714 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:33:31,714 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:33:31,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:31" (1/1) ... [2022-11-20 10:33:31,747 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:31" (1/1) ... [2022-11-20 10:33:31,804 INFO L138 Inliner]: procedures = 23, calls = 176, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 392 [2022-11-20 10:33:31,806 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:33:31,807 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:33:31,808 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:33:31,808 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:33:31,819 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:31" (1/1) ... [2022-11-20 10:33:31,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:31" (1/1) ... [2022-11-20 10:33:31,836 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:31" (1/1) ... [2022-11-20 10:33:31,843 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:31" (1/1) ... [2022-11-20 10:33:31,851 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:31" (1/1) ... [2022-11-20 10:33:31,863 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:31" (1/1) ... [2022-11-20 10:33:31,875 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:31" (1/1) ... [2022-11-20 10:33:31,877 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:31" (1/1) ... [2022-11-20 10:33:31,880 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:33:31,881 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:33:31,881 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:33:31,881 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:33:31,882 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:31" (1/1) ... [2022-11-20 10:33:31,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:33:31,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b800a1-7955-4784-8123-431650577542/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:33:31,919 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b800a1-7955-4784-8123-431650577542/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:33:31,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b800a1-7955-4784-8123-431650577542/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:33:31,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:33:31,972 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 10:33:31,972 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 10:33:31,972 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 10:33:31,972 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 10:33:31,973 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 10:33:31,973 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 10:33:31,973 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-20 10:33:31,973 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-20 10:33:31,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:33:31,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:33:31,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 10:33:31,974 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 10:33:31,976 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 10:33:31,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:33:31,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:33:31,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 10:33:31,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:33:31,979 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 10:33:32,173 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:33:32,175 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:33:32,727 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:33:33,031 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:33:33,031 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 10:33:33,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:33:33 BoogieIcfgContainer [2022-11-20 10:33:33,034 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:33:33,037 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:33:33,037 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:33:33,040 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:33:33,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:33:31" (1/3) ... [2022-11-20 10:33:33,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17e13e89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:33:33, skipping insertion in model container [2022-11-20 10:33:33,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:31" (2/3) ... [2022-11-20 10:33:33,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17e13e89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:33:33, skipping insertion in model container [2022-11-20 10:33:33,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:33:33" (3/3) ... [2022-11-20 10:33:33,044 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-4.wvr.c [2022-11-20 10:33:33,063 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:33:33,064 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-20 10:33:33,064 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 10:33:33,143 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-20 10:33:33,185 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-20 10:33:33,202 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 233 places, 222 transitions, 476 flow [2022-11-20 10:33:33,210 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 233 places, 222 transitions, 476 flow [2022-11-20 10:33:33,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 233 places, 222 transitions, 476 flow [2022-11-20 10:33:33,359 INFO L130 PetriNetUnfolder]: 2/218 cut-off events. [2022-11-20 10:33:33,359 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-20 10:33:33,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 218 events. 2/218 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 269 event pairs, 0 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 159. Up to 2 conditions per place. [2022-11-20 10:33:33,369 INFO L119 LiptonReduction]: Number of co-enabled transitions 6800 [2022-11-20 10:33:45,582 INFO L134 LiptonReduction]: Checked pairs total: 55709 [2022-11-20 10:33:45,583 INFO L136 LiptonReduction]: Total number of compositions: 175 [2022-11-20 10:33:45,592 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 104 places, 91 transitions, 214 flow [2022-11-20 10:33:53,152 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 177303 states, 177285 states have (on average 4.36476295230843) internal successors, (773807), 177302 states have internal predecessors, (773807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:53,204 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:33:53,215 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@734bd5f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:33:53,228 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-20 10:33:53,488 INFO L276 IsEmpty]: Start isEmpty. Operand has 177303 states, 177285 states have (on average 4.36476295230843) internal successors, (773807), 177302 states have internal predecessors, (773807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:53,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-20 10:33:53,494 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:33:53,495 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-20 10:33:53,496 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 10:33:53,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:53,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1177, now seen corresponding path program 1 times [2022-11-20 10:33:53,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:53,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064989454] [2022-11-20 10:33:53,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:53,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:53,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:53,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:33:53,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:53,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064989454] [2022-11-20 10:33:53,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064989454] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:33:53,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:33:53,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-20 10:33:53,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975401603] [2022-11-20 10:33:53,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:33:53,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 10:33:53,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:53,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 10:33:53,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 10:33:54,053 INFO L87 Difference]: Start difference. First operand has 177303 states, 177285 states have (on average 4.36476295230843) internal successors, (773807), 177302 states have internal predecessors, (773807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:58,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:33:58,381 INFO L93 Difference]: Finished difference Result 177300 states and 773804 transitions. [2022-11-20 10:33:58,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 10:33:58,384 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2022-11-20 10:33:58,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:34:00,873 INFO L225 Difference]: With dead ends: 177300 [2022-11-20 10:34:00,874 INFO L226 Difference]: Without dead ends: 177300 [2022-11-20 10:34:00,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 10:34:00,882 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:34:00,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:34:01,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177300 states. [2022-11-20 10:34:10,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177300 to 177300. [2022-11-20 10:34:10,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177300 states, 177285 states have (on average 4.3647460304030234) internal successors, (773804), 177299 states have internal predecessors, (773804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:34:13,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177300 states to 177300 states and 773804 transitions. [2022-11-20 10:34:13,416 INFO L78 Accepts]: Start accepts. Automaton has 177300 states and 773804 transitions. Word has length 1 [2022-11-20 10:34:13,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:34:13,417 INFO L495 AbstractCegarLoop]: Abstraction has 177300 states and 773804 transitions. [2022-11-20 10:34:13,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:34:13,418 INFO L276 IsEmpty]: Start isEmpty. Operand 177300 states and 773804 transitions. [2022-11-20 10:34:13,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 10:34:13,418 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:34:13,419 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-20 10:34:13,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:34:13,420 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 10:34:13,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:34:13,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1163973, now seen corresponding path program 1 times [2022-11-20 10:34:13,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:34:13,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575795481] [2022-11-20 10:34:13,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:34:13,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:34:13,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:13,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:34:13,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:34:13,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575795481] [2022-11-20 10:34:13,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575795481] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:34:13,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:34:13,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 10:34:13,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585204333] [2022-11-20 10:34:13,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:34:13,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:34:13,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:34:13,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:34:13,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:34:13,929 INFO L87 Difference]: Start difference. First operand 177300 states and 773804 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:34:17,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:34:17,465 INFO L93 Difference]: Finished difference Result 174542 states and 763389 transitions. [2022-11-20 10:34:17,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:34:17,472 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-20 10:34:17,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:34:19,119 INFO L225 Difference]: With dead ends: 174542 [2022-11-20 10:34:19,120 INFO L226 Difference]: Without dead ends: 174542 [2022-11-20 10:34:19,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:34:19,123 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 79 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:34:19,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 16 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:34:20,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174542 states. [2022-11-20 10:34:26,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174542 to 174542. [2022-11-20 10:34:27,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174542 states, 174529 states have (on average 4.373995152668038) internal successors, (763389), 174541 states have internal predecessors, (763389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:34:29,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174542 states to 174542 states and 763389 transitions. [2022-11-20 10:34:29,432 INFO L78 Accepts]: Start accepts. Automaton has 174542 states and 763389 transitions. Word has length 3 [2022-11-20 10:34:29,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:34:29,432 INFO L495 AbstractCegarLoop]: Abstraction has 174542 states and 763389 transitions. [2022-11-20 10:34:29,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:34:29,433 INFO L276 IsEmpty]: Start isEmpty. Operand 174542 states and 763389 transitions. [2022-11-20 10:34:29,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 10:34:29,434 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:34:29,434 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-20 10:34:29,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:34:29,435 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 10:34:29,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:34:29,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1163974, now seen corresponding path program 1 times [2022-11-20 10:34:29,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:34:29,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55500052] [2022-11-20 10:34:29,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:34:29,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:34:29,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:29,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:34:29,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:34:29,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55500052] [2022-11-20 10:34:29,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55500052] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:34:29,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:34:29,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 10:34:29,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628696579] [2022-11-20 10:34:29,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:34:29,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:34:29,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:34:29,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:34:29,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:34:29,752 INFO L87 Difference]: Start difference. First operand 174542 states and 763389 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:34:32,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:34:32,472 INFO L93 Difference]: Finished difference Result 171784 states and 752974 transitions. [2022-11-20 10:34:32,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:34:32,473 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-20 10:34:32,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted.