./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/chl-collitem-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8393723b 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_6484f70c-f437-4f3b-b881-98c5a1e9e2a9/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6484f70c-f437-4f3b-b881-98c5a1e9e2a9/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6484f70c-f437-4f3b-b881-98c5a1e9e2a9/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6484f70c-f437-4f3b-b881-98c5a1e9e2a9/bin/uautomizer-TMbwUNV5ro/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-collitem-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6484f70c-f437-4f3b-b881-98c5a1e9e2a9/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6484f70c-f437-4f3b-b881-98c5a1e9e2a9/bin/uautomizer-TMbwUNV5ro --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 64fd5c9a7c03c96af66cf5f857887398d304caaa83220f1caa01f4ec8c71700a --- 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-8393723 [2022-11-18 19:39:48,299 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:39:48,302 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:39:48,326 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:39:48,329 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:39:48,333 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:39:48,336 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:39:48,338 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:39:48,343 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:39:48,350 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:39:48,351 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:39:48,354 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:39:48,354 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:39:48,357 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:39:48,358 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:39:48,361 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:39:48,362 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:39:48,363 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:39:48,365 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:39:48,372 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:39:48,373 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:39:48,374 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:39:48,377 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:39:48,378 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:39:48,386 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:39:48,387 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:39:48,387 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:39:48,389 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:39:48,390 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:39:48,391 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:39:48,392 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:39:48,393 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:39:48,395 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:39:48,396 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:39:48,398 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:39:48,399 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:39:48,400 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:39:48,400 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:39:48,400 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:39:48,401 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:39:48,402 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:39:48,403 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6484f70c-f437-4f3b-b881-98c5a1e9e2a9/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-18 19:39:48,440 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:39:48,440 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:39:48,440 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:39:48,441 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:39:48,442 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:39:48,442 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:39:48,443 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:39:48,443 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:39:48,443 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:39:48,444 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:39:48,444 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:39:48,444 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:39:48,444 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:39:48,445 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:39:48,445 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:39:48,445 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-18 19:39:48,445 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-18 19:39:48,446 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-18 19:39:48,446 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:39:48,446 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 19:39:48,446 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:39:48,447 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:39:48,447 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:39:48,447 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:39:48,448 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:39:48,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:39:48,448 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:39:48,448 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:39:48,449 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:39:48,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:39:48,449 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_6484f70c-f437-4f3b-b881-98c5a1e9e2a9/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6484f70c-f437-4f3b-b881-98c5a1e9e2a9/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 64fd5c9a7c03c96af66cf5f857887398d304caaa83220f1caa01f4ec8c71700a [2022-11-18 19:39:48,774 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:39:48,811 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:39:48,814 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:39:48,815 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:39:48,816 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:39:48,817 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6484f70c-f437-4f3b-b881-98c5a1e9e2a9/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/chl-collitem-symm.wvr.c [2022-11-18 19:39:48,883 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6484f70c-f437-4f3b-b881-98c5a1e9e2a9/bin/uautomizer-TMbwUNV5ro/data/e18d71588/dda40f5ea0d14334ba5553b4fc19e622/FLAGc58875fa9 [2022-11-18 19:39:49,409 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:39:49,413 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6484f70c-f437-4f3b-b881-98c5a1e9e2a9/sv-benchmarks/c/weaver/chl-collitem-symm.wvr.c [2022-11-18 19:39:49,427 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6484f70c-f437-4f3b-b881-98c5a1e9e2a9/bin/uautomizer-TMbwUNV5ro/data/e18d71588/dda40f5ea0d14334ba5553b4fc19e622/FLAGc58875fa9 [2022-11-18 19:39:49,766 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6484f70c-f437-4f3b-b881-98c5a1e9e2a9/bin/uautomizer-TMbwUNV5ro/data/e18d71588/dda40f5ea0d14334ba5553b4fc19e622 [2022-11-18 19:39:49,771 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:39:49,774 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:39:49,779 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:39:49,780 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:39:49,783 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:39:49,784 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:39:49" (1/1) ... [2022-11-18 19:39:49,787 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@690c928b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:49, skipping insertion in model container [2022-11-18 19:39:49,787 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:39:49" (1/1) ... [2022-11-18 19:39:49,796 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:39:49,820 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:39:50,038 WARN L234 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_6484f70c-f437-4f3b-b881-98c5a1e9e2a9/sv-benchmarks/c/weaver/chl-collitem-symm.wvr.c[2986,2999] [2022-11-18 19:39:50,045 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:39:50,066 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:39:50,107 WARN L234 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_6484f70c-f437-4f3b-b881-98c5a1e9e2a9/sv-benchmarks/c/weaver/chl-collitem-symm.wvr.c[2986,2999] [2022-11-18 19:39:50,110 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:39:50,124 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:39:50,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:50 WrapperNode [2022-11-18 19:39:50,124 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:39:50,125 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:39:50,125 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:39:50,126 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:39:50,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:50" (1/1) ... [2022-11-18 19:39:50,157 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:50" (1/1) ... [2022-11-18 19:39:50,193 INFO L138 Inliner]: procedures = 22, calls = 35, calls flagged for inlining = 15, calls inlined = 29, statements flattened = 252 [2022-11-18 19:39:50,193 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:39:50,194 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:39:50,194 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:39:50,194 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:39:50,202 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:50" (1/1) ... [2022-11-18 19:39:50,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:50" (1/1) ... [2022-11-18 19:39:50,206 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:50" (1/1) ... [2022-11-18 19:39:50,207 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:50" (1/1) ... [2022-11-18 19:39:50,214 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:50" (1/1) ... [2022-11-18 19:39:50,216 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:50" (1/1) ... [2022-11-18 19:39:50,218 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:50" (1/1) ... [2022-11-18 19:39:50,220 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:50" (1/1) ... [2022-11-18 19:39:50,223 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:39:50,224 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:39:50,224 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:39:50,225 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:39:50,240 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:50" (1/1) ... [2022-11-18 19:39:50,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:39:50,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6484f70c-f437-4f3b-b881-98c5a1e9e2a9/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:39:50,279 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6484f70c-f437-4f3b-b881-98c5a1e9e2a9/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:39:50,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6484f70c-f437-4f3b-b881-98c5a1e9e2a9/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:39:50,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:39:50,323 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 19:39:50,324 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 19:39:50,324 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 19:39:50,324 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 19:39:50,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:39:50,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:39:50,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:39:50,325 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 19:39:50,325 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 19:39:50,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:39:50,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:39:50,326 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 19:39:50,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:39:50,327 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 19:39:50,443 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:39:50,445 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:39:51,093 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:39:51,620 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:39:51,620 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 19:39:51,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:39:51 BoogieIcfgContainer [2022-11-18 19:39:51,623 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:39:51,626 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:39:51,627 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:39:51,631 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:39:51,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:39:49" (1/3) ... [2022-11-18 19:39:51,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24064f4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:39:51, skipping insertion in model container [2022-11-18 19:39:51,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:50" (2/3) ... [2022-11-18 19:39:51,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24064f4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:39:51, skipping insertion in model container [2022-11-18 19:39:51,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:39:51" (3/3) ... [2022-11-18 19:39:51,635 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-collitem-symm.wvr.c [2022-11-18 19:39:51,654 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:39:51,654 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-18 19:39:51,654 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 19:39:51,776 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 19:39:51,817 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-18 19:39:51,837 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 130 places, 126 transitions, 268 flow [2022-11-18 19:39:51,844 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 130 places, 126 transitions, 268 flow [2022-11-18 19:39:51,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 126 transitions, 268 flow [2022-11-18 19:39:51,906 INFO L130 PetriNetUnfolder]: 3/124 cut-off events. [2022-11-18 19:39:51,906 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 19:39:51,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 124 events. 3/124 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 45 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2022-11-18 19:39:51,912 INFO L119 LiptonReduction]: Number of co-enabled transitions 156 [2022-11-18 19:40:02,377 INFO L134 LiptonReduction]: Checked pairs total: 259 [2022-11-18 19:40:02,378 INFO L136 LiptonReduction]: Total number of compositions: 137 [2022-11-18 19:40:02,385 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 23 transitions, 62 flow [2022-11-18 19:40:02,396 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 39 states, 29 states have (on average 2.0344827586206895) internal successors, (59), 38 states have internal predecessors, (59), 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) [2022-11-18 19:40:02,411 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:40:02,417 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;@76f64091, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:40:02,417 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-11-18 19:40:02,419 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 29 states have (on average 2.0344827586206895) internal successors, (59), 38 states have internal predecessors, (59), 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) [2022-11-18 19:40:02,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-18 19:40:02,424 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:40:02,424 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-18 19:40:02,425 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:40:02,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:02,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1040, now seen corresponding path program 1 times [2022-11-18 19:40:02,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:40:02,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383367414] [2022-11-18 19:40:02,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:02,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:40:02,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:02,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:40:02,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:40:02,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383367414] [2022-11-18 19:40:02,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383367414] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:40:02,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:40:02,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-18 19:40:02,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649126079] [2022-11-18 19:40:02,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:40:02,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 19:40:02,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:40:02,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 19:40:02,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 19:40:02,586 INFO L87 Difference]: Start difference. First operand has 39 states, 29 states have (on average 2.0344827586206895) internal successors, (59), 38 states have internal predecessors, (59), 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) [2022-11-18 19:40:02,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:40:02,646 INFO L93 Difference]: Finished difference Result 36 states and 56 transitions. [2022-11-18 19:40:02,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 19:40:02,648 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 [2022-11-18 19:40:02,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:40:02,656 INFO L225 Difference]: With dead ends: 36 [2022-11-18 19:40:02,657 INFO L226 Difference]: Without dead ends: 36 [2022-11-18 19:40:02,657 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 [2022-11-18 19:40:02,663 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:40:02,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:40:02,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-18 19:40:02,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-11-18 19:40:02,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 29 states have (on average 1.9310344827586208) internal successors, (56), 35 states have internal predecessors, (56), 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) [2022-11-18 19:40:02,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2022-11-18 19:40:02,707 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 1 [2022-11-18 19:40:02,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:40:02,707 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2022-11-18 19:40:02,712 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) [2022-11-18 19:40:02,713 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2022-11-18 19:40:02,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-18 19:40:02,715 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:40:02,715 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-18 19:40:02,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:40:02,716 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:40:02,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:02,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1026441, now seen corresponding path program 1 times [2022-11-18 19:40:02,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:40:02,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988972351] [2022-11-18 19:40:02,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:02,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:40:02,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:03,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:40:03,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:40:03,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988972351] [2022-11-18 19:40:03,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988972351] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:40:03,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:40:03,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:40:03,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480969098] [2022-11-18 19:40:03,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:40:03,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:40:03,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:40:03,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:40:03,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:40:03,011 INFO L87 Difference]: Start difference. First operand 36 states and 56 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) [2022-11-18 19:40:03,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:40:03,066 INFO L93 Difference]: Finished difference Result 32 states and 50 transitions. [2022-11-18 19:40:03,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:40:03,067 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 [2022-11-18 19:40:03,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:40:03,070 INFO L225 Difference]: With dead ends: 32 [2022-11-18 19:40:03,071 INFO L226 Difference]: Without dead ends: 32 [2022-11-18 19:40:03,072 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 [2022-11-18 19:40:03,074 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 13 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:40:03,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 0 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:40:03,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-18 19:40:03,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-11-18 19:40:03,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 31 states have internal predecessors, (50), 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) [2022-11-18 19:40:03,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 50 transitions. [2022-11-18 19:40:03,093 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 50 transitions. Word has length 3 [2022-11-18 19:40:03,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:40:03,094 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 50 transitions. [2022-11-18 19:40:03,094 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) [2022-11-18 19:40:03,094 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 50 transitions. [2022-11-18 19:40:03,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-18 19:40:03,095 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:40:03,095 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-18 19:40:03,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:40:03,096 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:40:03,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:03,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1026442, now seen corresponding path program 1 times [2022-11-18 19:40:03,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:40:03,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203766437] [2022-11-18 19:40:03,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:03,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:40:03,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:03,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:40:03,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:40:03,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203766437] [2022-11-18 19:40:03,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203766437] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:40:03,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:40:03,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:40:03,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203409441] [2022-11-18 19:40:03,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:40:03,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:40:03,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:40:03,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:40:03,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:40:03,292 INFO L87 Difference]: Start difference. First operand 32 states and 50 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) [2022-11-18 19:40:03,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:40:03,337 INFO L93 Difference]: Finished difference Result 28 states and 44 transitions. [2022-11-18 19:40:03,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:40:03,338 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 [2022-11-18 19:40:03,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:40:03,339 INFO L225 Difference]: With dead ends: 28 [2022-11-18 19:40:03,339 INFO L226 Difference]: Without dead ends: 28 [2022-11-18 19:40:03,341 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 [2022-11-18 19:40:03,344 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 11 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:40:03,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 0 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:40:03,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-18 19:40:03,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-11-18 19:40:03,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 25 states have (on average 1.76) internal successors, (44), 27 states have internal predecessors, (44), 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) [2022-11-18 19:40:03,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 44 transitions. [2022-11-18 19:40:03,355 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 44 transitions. Word has length 3 [2022-11-18 19:40:03,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:40:03,356 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 44 transitions. [2022-11-18 19:40:03,356 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) [2022-11-18 19:40:03,356 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 44 transitions. [2022-11-18 19:40:03,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-18 19:40:03,357 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:40:03,357 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-18 19:40:03,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 19:40:03,357 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:40:03,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:03,359 INFO L85 PathProgramCache]: Analyzing trace with hash 986436724, now seen corresponding path program 1 times [2022-11-18 19:40:03,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:40:03,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336897263] [2022-11-18 19:40:03,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:03,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:40:03,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:03,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:40:03,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:40:03,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336897263] [2022-11-18 19:40:03,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336897263] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:40:03,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:40:03,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:40:03,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036124506] [2022-11-18 19:40:03,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:40:03,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:40:03,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:40:03,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:40:03,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:40:03,459 INFO L87 Difference]: Start difference. First operand 28 states and 44 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-11-18 19:40:03,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:40:03,491 INFO L93 Difference]: Finished difference Result 24 states and 36 transitions. [2022-11-18 19:40:03,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:40:03,491 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2022-11-18 19:40:03,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:40:03,492 INFO L225 Difference]: With dead ends: 24 [2022-11-18 19:40:03,492 INFO L226 Difference]: Without dead ends: 24 [2022-11-18 19:40:03,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:40:03,493 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 19 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:40:03,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 0 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:40:03,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-18 19:40:03,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-18 19:40:03,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 23 states have internal predecessors, (36), 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) [2022-11-18 19:40:03,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 36 transitions. [2022-11-18 19:40:03,497 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 36 transitions. Word has length 5 [2022-11-18 19:40:03,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:40:03,497 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 36 transitions. [2022-11-18 19:40:03,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-11-18 19:40:03,498 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 36 transitions. [2022-11-18 19:40:03,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-18 19:40:03,498 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:40:03,498 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-18 19:40:03,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 19:40:03,499 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:40:03,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:03,499 INFO L85 PathProgramCache]: Analyzing trace with hash 986436725, now seen corresponding path program 1 times [2022-11-18 19:40:03,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:40:03,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569552869] [2022-11-18 19:40:03,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:03,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:40:03,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:03,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:40:03,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:40:03,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569552869] [2022-11-18 19:40:03,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569552869] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:40:03,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:40:03,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:40:03,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814654033] [2022-11-18 19:40:03,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:40:03,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:40:03,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:40:03,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:40:03,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:40:03,622 INFO L87 Difference]: Start difference. First operand 24 states and 36 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-11-18 19:40:03,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:40:03,651 INFO L93 Difference]: Finished difference Result 20 states and 28 transitions. [2022-11-18 19:40:03,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:40:03,652 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2022-11-18 19:40:03,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:40:03,652 INFO L225 Difference]: With dead ends: 20 [2022-11-18 19:40:03,652 INFO L226 Difference]: Without dead ends: 20 [2022-11-18 19:40:03,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:40:03,653 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 17 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:40:03,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 0 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:40:03,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-18 19:40:03,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-11-18 19:40:03,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 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) [2022-11-18 19:40:03,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 28 transitions. [2022-11-18 19:40:03,656 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 28 transitions. Word has length 5 [2022-11-18 19:40:03,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:40:03,657 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 28 transitions. [2022-11-18 19:40:03,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-11-18 19:40:03,657 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions. [2022-11-18 19:40:03,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-18 19:40:03,657 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:40:03,657 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:40:03,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:40:03,658 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:40:03,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:03,658 INFO L85 PathProgramCache]: Analyzing trace with hash 2028572350, now seen corresponding path program 1 times [2022-11-18 19:40:03,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:40:03,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959540681] [2022-11-18 19:40:03,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:03,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:40:03,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:06,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:40:06,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:40:06,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959540681] [2022-11-18 19:40:06,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959540681] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:40:06,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:40:06,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:40:06,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093212671] [2022-11-18 19:40:06,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:40:06,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:40:06,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:40:06,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:40:06,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:40:06,422 INFO L87 Difference]: Start difference. First operand 20 states and 28 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-11-18 19:40:06,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:40:06,587 INFO L93 Difference]: Finished difference Result 25 states and 32 transitions. [2022-11-18 19:40:06,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:40:06,588 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2022-11-18 19:40:06,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:40:06,588 INFO L225 Difference]: With dead ends: 25 [2022-11-18 19:40:06,589 INFO L226 Difference]: Without dead ends: 14 [2022-11-18 19:40:06,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:40:06,589 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 8 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:40:06,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 0 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:40:06,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-18 19:40:06,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-11-18 19:40:06,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 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) [2022-11-18 19:40:06,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-11-18 19:40:06,592 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2022-11-18 19:40:06,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:40:06,592 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-11-18 19:40:06,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-11-18 19:40:06,593 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-11-18 19:40:06,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-18 19:40:06,593 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:40:06,593 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:40:06,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 19:40:06,593 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:40:06,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:06,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1766598822, now seen corresponding path program 2 times [2022-11-18 19:40:06,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:40:06,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432415534] [2022-11-18 19:40:06,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:06,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:40:06,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:08,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:40:08,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:40:08,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432415534] [2022-11-18 19:40:08,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432415534] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:40:08,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:40:08,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:40:08,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853040620] [2022-11-18 19:40:08,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:40:08,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:40:08,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:40:08,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:40:08,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:40:08,396 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-11-18 19:40:08,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:40:08,520 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2022-11-18 19:40:08,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:40:08,521 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2022-11-18 19:40:08,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:40:08,522 INFO L225 Difference]: With dead ends: 13 [2022-11-18 19:40:08,522 INFO L226 Difference]: Without dead ends: 0 [2022-11-18 19:40:08,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:40:08,523 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 6 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:40:08,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 0 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:40:08,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-18 19:40:08,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-18 19:40:08,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-11-18 19:40:08,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-18 19:40:08,525 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2022-11-18 19:40:08,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:40:08,525 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-18 19:40:08,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-11-18 19:40:08,525 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-18 19:40:08,525 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-18 19:40:08,528 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 12 remaining) [2022-11-18 19:40:08,528 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2022-11-18 19:40:08,529 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2022-11-18 19:40:08,529 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2022-11-18 19:40:08,529 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2022-11-18 19:40:08,529 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2022-11-18 19:40:08,529 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2022-11-18 19:40:08,530 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2022-11-18 19:40:08,530 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (3 of 12 remaining) [2022-11-18 19:40:08,530 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (2 of 12 remaining) [2022-11-18 19:40:08,530 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2022-11-18 19:40:08,531 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2022-11-18 19:40:08,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 19:40:08,533 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2022-11-18 19:40:08,536 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-18 19:40:08,536 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 19:40:08,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 07:40:08 BasicIcfg [2022-11-18 19:40:08,539 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 19:40:08,539 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 19:40:08,539 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 19:40:08,540 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 19:40:08,540 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:39:51" (3/4) ... [2022-11-18 19:40:08,543 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-18 19:40:08,548 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-18 19:40:08,548 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-18 19:40:08,553 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2022-11-18 19:40:08,553 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-18 19:40:08,553 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-18 19:40:08,554 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-18 19:40:08,587 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6484f70c-f437-4f3b-b881-98c5a1e9e2a9/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 19:40:08,588 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 19:40:08,588 INFO L158 Benchmark]: Toolchain (without parser) took 18814.65ms. Allocated memory was 134.2MB in the beginning and 283.1MB in the end (delta: 148.9MB). Free memory was 107.4MB in the beginning and 209.4MB in the end (delta: -102.0MB). Peak memory consumption was 46.3MB. Max. memory is 16.1GB. [2022-11-18 19:40:08,588 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 94.4MB. Free memory is still 53.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 19:40:08,589 INFO L158 Benchmark]: CACSL2BoogieTranslator took 345.22ms. Allocated memory is still 134.2MB. Free memory was 107.1MB in the beginning and 109.9MB in the end (delta: -2.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-18 19:40:08,589 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.14ms. Allocated memory is still 134.2MB. Free memory was 109.9MB in the beginning and 107.3MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-18 19:40:08,589 INFO L158 Benchmark]: Boogie Preprocessor took 29.69ms. Allocated memory is still 134.2MB. Free memory was 107.3MB in the beginning and 105.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 19:40:08,590 INFO L158 Benchmark]: RCFGBuilder took 1398.94ms. Allocated memory is still 134.2MB. Free memory was 105.5MB in the beginning and 92.4MB in the end (delta: 13.1MB). Peak memory consumption was 47.4MB. Max. memory is 16.1GB. [2022-11-18 19:40:08,590 INFO L158 Benchmark]: TraceAbstraction took 16912.62ms. Allocated memory was 134.2MB in the beginning and 283.1MB in the end (delta: 148.9MB). Free memory was 91.6MB in the beginning and 212.6MB in the end (delta: -121.0MB). Peak memory consumption was 27.7MB. Max. memory is 16.1GB. [2022-11-18 19:40:08,590 INFO L158 Benchmark]: Witness Printer took 48.28ms. Allocated memory is still 283.1MB. Free memory was 212.6MB in the beginning and 209.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 19:40:08,592 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 94.4MB. Free memory is still 53.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 345.22ms. Allocated memory is still 134.2MB. Free memory was 107.1MB in the beginning and 109.9MB in the end (delta: -2.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.14ms. Allocated memory is still 134.2MB. Free memory was 109.9MB in the beginning and 107.3MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.69ms. Allocated memory is still 134.2MB. Free memory was 107.3MB in the beginning and 105.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1398.94ms. Allocated memory is still 134.2MB. Free memory was 105.5MB in the beginning and 92.4MB in the end (delta: 13.1MB). Peak memory consumption was 47.4MB. Max. memory is 16.1GB. * TraceAbstraction took 16912.62ms. Allocated memory was 134.2MB in the beginning and 283.1MB in the end (delta: 148.9MB). Free memory was 91.6MB in the beginning and 212.6MB in the end (delta: -121.0MB). Peak memory consumption was 27.7MB. Max. memory is 16.1GB. * Witness Printer took 48.28ms. Allocated memory is still 283.1MB. Free memory was 212.6MB in the beginning and 209.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10.5s, 130 PlacesBefore, 30 PlacesAfterwards, 126 TransitionsBefore, 23 TransitionsAfterwards, 156 CoEnabledTransitionPairs, 7 FixpointIterations, 108 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 0 ConcurrentYvCompositions, 3 ChoiceCompositions, 137 TotalNumberOfCompositions, 259 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 259, independent: 259, independent conditional: 0, independent unconditional: 259, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 109, independent: 109, independent conditional: 0, independent unconditional: 109, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 109, independent: 109, independent conditional: 0, independent unconditional: 109, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 259, independent: 150, independent conditional: 0, independent unconditional: 150, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 109, unknown conditional: 0, unknown unconditional: 109] , Statistics on independence cache: Total cache size (in pairs): 20, Positive cache size: 20, Positive conditional cache size: 0, Positive unconditional cache size: 20, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 87]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 64]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 134 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 16.7s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 10.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 74 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 74 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 130 IncrementalHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 0 mSDtfsCounter, 130 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, InterpolantAutomatonStates: 22, 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, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 919 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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 - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-18 19:40:08,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6484f70c-f437-4f3b-b881-98c5a1e9e2a9/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE