./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_32-traces-mine-vs-oplus-vs-meet_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_358c0362-c43a-4df8-b727-251320b12583/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_358c0362-c43a-4df8-b727-251320b12583/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_358c0362-c43a-4df8-b727-251320b12583/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_358c0362-c43a-4df8-b727-251320b12583/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_32-traces-mine-vs-oplus-vs-meet_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_358c0362-c43a-4df8-b727-251320b12583/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_358c0362-c43a-4df8-b727-251320b12583/bin/uautomizer-ZsLfNo2U6R --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 a233f90faab2ceb8ddfb042463870c03c0794d3cd45b2ba20de731314559cb95 --- 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-38b53e6 [2022-11-25 15:48:21,648 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 15:48:21,650 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 15:48:21,675 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 15:48:21,678 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 15:48:21,682 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 15:48:21,694 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 15:48:21,698 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 15:48:21,701 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 15:48:21,710 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 15:48:21,712 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 15:48:21,714 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 15:48:21,715 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 15:48:21,718 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 15:48:21,722 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 15:48:21,725 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 15:48:21,728 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 15:48:21,729 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 15:48:21,731 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 15:48:21,735 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 15:48:21,740 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 15:48:21,742 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 15:48:21,745 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 15:48:21,746 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 15:48:21,754 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 15:48:21,759 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 15:48:21,759 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 15:48:21,761 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 15:48:21,762 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 15:48:21,764 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 15:48:21,765 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 15:48:21,766 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 15:48:21,768 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 15:48:21,769 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 15:48:21,771 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 15:48:21,772 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 15:48:21,773 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 15:48:21,773 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 15:48:21,774 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 15:48:21,777 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 15:48:21,778 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 15:48:21,779 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_358c0362-c43a-4df8-b727-251320b12583/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-25 15:48:21,824 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 15:48:21,824 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 15:48:21,825 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 15:48:21,825 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 15:48:21,826 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 15:48:21,827 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 15:48:21,828 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 15:48:21,828 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 15:48:21,828 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 15:48:21,829 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 15:48:21,830 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 15:48:21,830 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 15:48:21,831 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 15:48:21,831 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 15:48:21,831 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 15:48:21,831 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 15:48:21,832 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 15:48:21,832 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 15:48:21,832 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 15:48:21,832 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 15:48:21,833 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 15:48:21,833 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 15:48:21,833 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 15:48:21,833 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 15:48:21,834 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 15:48:21,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:48:21,834 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 15:48:21,835 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 15:48:21,835 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 15:48:21,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 15:48:21,836 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 15:48:21,836 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 15:48:21,837 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 15:48:21,837 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_358c0362-c43a-4df8-b727-251320b12583/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_358c0362-c43a-4df8-b727-251320b12583/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a233f90faab2ceb8ddfb042463870c03c0794d3cd45b2ba20de731314559cb95 [2022-11-25 15:48:22,173 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 15:48:22,208 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 15:48:22,211 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 15:48:22,212 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 15:48:22,213 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 15:48:22,214 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_358c0362-c43a-4df8-b727-251320b12583/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/goblint-regression/13-privatized_32-traces-mine-vs-oplus-vs-meet_true.i [2022-11-25 15:48:25,484 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 15:48:25,827 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 15:48:25,828 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_358c0362-c43a-4df8-b727-251320b12583/sv-benchmarks/c/goblint-regression/13-privatized_32-traces-mine-vs-oplus-vs-meet_true.i [2022-11-25 15:48:25,843 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_358c0362-c43a-4df8-b727-251320b12583/bin/uautomizer-ZsLfNo2U6R/data/c00d15d86/5411db1da4f448eebc9875ddc5130ad6/FLAG743aa5969 [2022-11-25 15:48:25,859 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_358c0362-c43a-4df8-b727-251320b12583/bin/uautomizer-ZsLfNo2U6R/data/c00d15d86/5411db1da4f448eebc9875ddc5130ad6 [2022-11-25 15:48:25,869 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 15:48:25,870 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 15:48:25,872 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 15:48:25,872 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 15:48:25,883 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 15:48:25,884 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:48:25" (1/1) ... [2022-11-25 15:48:25,885 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fdabe0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:48:25, skipping insertion in model container [2022-11-25 15:48:25,885 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:48:25" (1/1) ... [2022-11-25 15:48:25,905 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 15:48:25,981 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 15:48:26,174 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_358c0362-c43a-4df8-b727-251320b12583/sv-benchmarks/c/goblint-regression/13-privatized_32-traces-mine-vs-oplus-vs-meet_true.i[1105,1118] [2022-11-25 15:48:26,335 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:48:26,352 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 15:48:26,367 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_358c0362-c43a-4df8-b727-251320b12583/sv-benchmarks/c/goblint-regression/13-privatized_32-traces-mine-vs-oplus-vs-meet_true.i[1105,1118] [2022-11-25 15:48:26,431 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:48:26,501 INFO L208 MainTranslator]: Completed translation [2022-11-25 15:48:26,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:48:26 WrapperNode [2022-11-25 15:48:26,502 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 15:48:26,503 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 15:48:26,504 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 15:48:26,504 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 15:48:26,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:48:26" (1/1) ... [2022-11-25 15:48:26,545 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:48:26" (1/1) ... [2022-11-25 15:48:26,584 INFO L138 Inliner]: procedures = 162, calls = 40, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-11-25 15:48:26,584 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 15:48:26,585 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 15:48:26,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 15:48:26,586 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 15:48:26,599 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:48:26" (1/1) ... [2022-11-25 15:48:26,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:48:26" (1/1) ... [2022-11-25 15:48:26,616 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:48:26" (1/1) ... [2022-11-25 15:48:26,621 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:48:26" (1/1) ... [2022-11-25 15:48:26,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:48:26" (1/1) ... [2022-11-25 15:48:26,640 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:48:26" (1/1) ... [2022-11-25 15:48:26,642 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:48:26" (1/1) ... [2022-11-25 15:48:26,643 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:48:26" (1/1) ... [2022-11-25 15:48:26,646 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 15:48:26,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 15:48:26,647 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 15:48:26,648 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 15:48:26,649 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:48:26" (1/1) ... [2022-11-25 15:48:26,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:48:26,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_358c0362-c43a-4df8-b727-251320b12583/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:48:26,700 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_358c0362-c43a-4df8-b727-251320b12583/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 15:48:26,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_358c0362-c43a-4df8-b727-251320b12583/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 15:48:26,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 15:48:26,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 15:48:26,748 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-25 15:48:26,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 15:48:26,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 15:48:26,748 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-25 15:48:26,749 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-25 15:48:26,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 15:48:26,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 15:48:26,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 15:48:26,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 15:48:26,752 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 15:48:26,897 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 15:48:26,900 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 15:48:27,249 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 15:48:27,259 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 15:48:27,259 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 15:48:27,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:48:27 BoogieIcfgContainer [2022-11-25 15:48:27,262 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 15:48:27,265 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 15:48:27,265 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 15:48:27,269 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 15:48:27,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 03:48:25" (1/3) ... [2022-11-25 15:48:27,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c7e805 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:48:27, skipping insertion in model container [2022-11-25 15:48:27,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:48:26" (2/3) ... [2022-11-25 15:48:27,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c7e805 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:48:27, skipping insertion in model container [2022-11-25 15:48:27,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:48:27" (3/3) ... [2022-11-25 15:48:27,273 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_32-traces-mine-vs-oplus-vs-meet_true.i [2022-11-25 15:48:27,298 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 15:48:27,298 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2022-11-25 15:48:27,299 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 15:48:27,365 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-25 15:48:27,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 108 transitions, 224 flow [2022-11-25 15:48:27,534 INFO L130 PetriNetUnfolder]: 2/107 cut-off events. [2022-11-25 15:48:27,535 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 15:48:27,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 107 events. 2/107 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 67 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2022-11-25 15:48:27,541 INFO L82 GeneralOperation]: Start removeDead. Operand has 110 places, 108 transitions, 224 flow [2022-11-25 15:48:27,547 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 102 transitions, 210 flow [2022-11-25 15:48:27,553 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 15:48:27,587 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 104 places, 102 transitions, 210 flow [2022-11-25 15:48:27,601 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 104 places, 102 transitions, 210 flow [2022-11-25 15:48:27,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 102 transitions, 210 flow [2022-11-25 15:48:27,665 INFO L130 PetriNetUnfolder]: 2/102 cut-off events. [2022-11-25 15:48:27,668 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 15:48:27,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 102 events. 2/102 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 66 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2022-11-25 15:48:27,671 INFO L119 LiptonReduction]: Number of co-enabled transitions 1258 [2022-11-25 15:48:32,718 INFO L134 LiptonReduction]: Checked pairs total: 5522 [2022-11-25 15:48:32,718 INFO L136 LiptonReduction]: Total number of compositions: 98 [2022-11-25 15:48:32,749 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 15:48:32,759 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=PETRI_NET, 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;@25546cb1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 15:48:32,760 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-11-25 15:48:32,764 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2022-11-25 15:48:32,764 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 15:48:32,764 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:48:32,766 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-11-25 15:48:32,767 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2022-11-25 15:48:32,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:48:32,776 INFO L85 PathProgramCache]: Analyzing trace with hash 370, now seen corresponding path program 1 times [2022-11-25 15:48:32,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:48:32,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447913437] [2022-11-25 15:48:32,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:48:32,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:48:32,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:48:32,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:48:32,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:48:32,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447913437] [2022-11-25 15:48:32,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447913437] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:48:32,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:48:32,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-25 15:48:32,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24535670] [2022-11-25 15:48:32,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:48:32,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 15:48:32,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:48:32,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 15:48:32,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 15:48:32,986 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 206 [2022-11-25 15:48:32,989 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 70 flow. Second operand has 2 states, 2 states have (on average 102.5) internal successors, (205), 2 states have internal predecessors, (205), 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) [2022-11-25 15:48:32,989 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:48:32,990 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 206 [2022-11-25 15:48:32,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:48:33,109 INFO L130 PetriNetUnfolder]: 60/177 cut-off events. [2022-11-25 15:48:33,110 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 15:48:33,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324 conditions, 177 events. 60/177 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 733 event pairs, 60 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 310. Up to 142 conditions per place. [2022-11-25 15:48:33,116 INFO L137 encePairwiseOnDemand]: 202/206 looper letters, 21 selfloop transitions, 0 changer transitions 0/28 dead transitions. [2022-11-25 15:48:33,116 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 28 transitions, 104 flow [2022-11-25 15:48:33,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 15:48:33,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-25 15:48:33,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 229 transitions. [2022-11-25 15:48:33,139 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5558252427184466 [2022-11-25 15:48:33,140 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 229 transitions. [2022-11-25 15:48:33,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 229 transitions. [2022-11-25 15:48:33,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:48:33,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 229 transitions. [2022-11-25 15:48:33,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 114.5) internal successors, (229), 2 states have internal predecessors, (229), 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) [2022-11-25 15:48:33,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 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) [2022-11-25 15:48:33,166 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 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) [2022-11-25 15:48:33,168 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 70 flow. Second operand 2 states and 229 transitions. [2022-11-25 15:48:33,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 28 transitions, 104 flow [2022-11-25 15:48:33,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 28 transitions, 100 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 15:48:33,175 INFO L231 Difference]: Finished difference. Result has 31 places, 28 transitions, 58 flow [2022-11-25 15:48:33,177 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=58, PETRI_PLACES=31, PETRI_TRANSITIONS=28} [2022-11-25 15:48:33,183 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, -3 predicate places. [2022-11-25 15:48:33,184 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 28 transitions, 58 flow [2022-11-25 15:48:33,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 102.5) internal successors, (205), 2 states have internal predecessors, (205), 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) [2022-11-25 15:48:33,184 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:48:33,184 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 15:48:33,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 15:48:33,185 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2022-11-25 15:48:33,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:48:33,197 INFO L85 PathProgramCache]: Analyzing trace with hash 350197593, now seen corresponding path program 1 times [2022-11-25 15:48:33,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:48:33,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645335403] [2022-11-25 15:48:33,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:48:33,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:48:33,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:48:33,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:48:33,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:48:33,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645335403] [2022-11-25 15:48:33,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645335403] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:48:33,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:48:33,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 15:48:33,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722495590] [2022-11-25 15:48:33,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:48:33,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:48:33,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:48:33,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:48:33,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:48:33,496 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 206 [2022-11-25 15:48:33,496 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 28 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 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) [2022-11-25 15:48:33,497 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:48:33,497 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 206 [2022-11-25 15:48:33,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:48:33,610 INFO L130 PetriNetUnfolder]: 50/171 cut-off events. [2022-11-25 15:48:33,610 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 15:48:33,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 300 conditions, 171 events. 50/171 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 704 event pairs, 40 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 297. Up to 102 conditions per place. [2022-11-25 15:48:33,614 INFO L137 encePairwiseOnDemand]: 201/206 looper letters, 28 selfloop transitions, 3 changer transitions 0/38 dead transitions. [2022-11-25 15:48:33,614 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 38 transitions, 140 flow [2022-11-25 15:48:33,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:48:33,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:48:33,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 330 transitions. [2022-11-25 15:48:33,622 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5339805825242718 [2022-11-25 15:48:33,623 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 330 transitions. [2022-11-25 15:48:33,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 330 transitions. [2022-11-25 15:48:33,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:48:33,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 330 transitions. [2022-11-25 15:48:33,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 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) [2022-11-25 15:48:33,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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) [2022-11-25 15:48:33,630 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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) [2022-11-25 15:48:33,630 INFO L175 Difference]: Start difference. First operand has 31 places, 28 transitions, 58 flow. Second operand 3 states and 330 transitions. [2022-11-25 15:48:33,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 38 transitions, 140 flow [2022-11-25 15:48:33,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 38 transitions, 140 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 15:48:33,633 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 71 flow [2022-11-25 15:48:33,633 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2022-11-25 15:48:33,634 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places. [2022-11-25 15:48:33,634 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 71 flow [2022-11-25 15:48:33,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 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) [2022-11-25 15:48:33,635 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:48:33,635 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:48:33,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 15:48:33,636 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2022-11-25 15:48:33,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:48:33,638 INFO L85 PathProgramCache]: Analyzing trace with hash 647238035, now seen corresponding path program 1 times [2022-11-25 15:48:33,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:48:33,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420514308] [2022-11-25 15:48:33,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:48:33,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:48:33,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:48:34,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:48:34,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:48:34,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420514308] [2022-11-25 15:48:34,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420514308] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:48:34,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:48:34,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 15:48:34,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252003039] [2022-11-25 15:48:34,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:48:34,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 15:48:34,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:48:34,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 15:48:34,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-25 15:48:34,350 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 206 [2022-11-25 15:48:34,351 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 71 flow. Second operand has 6 states, 6 states have (on average 88.5) internal successors, (531), 6 states have internal predecessors, (531), 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) [2022-11-25 15:48:34,351 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:48:34,351 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 206 [2022-11-25 15:48:34,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:48:34,476 INFO L130 PetriNetUnfolder]: 55/160 cut-off events. [2022-11-25 15:48:34,477 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-25 15:48:34,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 343 conditions, 160 events. 55/160 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 541 event pairs, 25 based on Foata normal form. 22/161 useless extension candidates. Maximal degree in co-relation 338. Up to 92 conditions per place. [2022-11-25 15:48:34,483 INFO L137 encePairwiseOnDemand]: 197/206 looper letters, 23 selfloop transitions, 9 changer transitions 0/34 dead transitions. [2022-11-25 15:48:34,483 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 34 transitions, 147 flow [2022-11-25 15:48:34,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 15:48:34,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 15:48:34,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 384 transitions. [2022-11-25 15:48:34,488 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46601941747572817 [2022-11-25 15:48:34,488 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 384 transitions. [2022-11-25 15:48:34,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 384 transitions. [2022-11-25 15:48:34,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:48:34,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 384 transitions. [2022-11-25 15:48:34,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 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) [2022-11-25 15:48:34,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 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) [2022-11-25 15:48:34,494 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 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) [2022-11-25 15:48:34,494 INFO L175 Difference]: Start difference. First operand has 34 places, 28 transitions, 71 flow. Second operand 4 states and 384 transitions. [2022-11-25 15:48:34,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 34 transitions, 147 flow [2022-11-25 15:48:34,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 34 transitions, 141 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 15:48:34,497 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 83 flow [2022-11-25 15:48:34,497 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=83, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2022-11-25 15:48:34,499 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 1 predicate places. [2022-11-25 15:48:34,500 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 83 flow [2022-11-25 15:48:34,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 88.5) internal successors, (531), 6 states have internal predecessors, (531), 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) [2022-11-25 15:48:34,500 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:48:34,501 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:48:34,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 15:48:34,501 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2022-11-25 15:48:34,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:48:34,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1383070035, now seen corresponding path program 1 times [2022-11-25 15:48:34,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:48:34,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058929987] [2022-11-25 15:48:34,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:48:34,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:48:34,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:48:34,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:48:34,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:48:34,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058929987] [2022-11-25 15:48:34,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058929987] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:48:34,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:48:34,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 15:48:34,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376775434] [2022-11-25 15:48:34,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:48:34,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:48:34,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:48:34,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:48:34,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:48:34,875 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 206 [2022-11-25 15:48:34,876 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 83 flow. Second operand has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 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) [2022-11-25 15:48:34,876 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:48:34,876 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 206 [2022-11-25 15:48:34,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:48:34,988 INFO L130 PetriNetUnfolder]: 55/181 cut-off events. [2022-11-25 15:48:34,988 INFO L131 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2022-11-25 15:48:34,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 430 conditions, 181 events. 55/181 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 696 event pairs, 23 based on Foata normal form. 5/166 useless extension candidates. Maximal degree in co-relation 425. Up to 109 conditions per place. [2022-11-25 15:48:34,990 INFO L137 encePairwiseOnDemand]: 197/206 looper letters, 34 selfloop transitions, 9 changer transitions 0/45 dead transitions. [2022-11-25 15:48:34,990 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 45 transitions, 217 flow [2022-11-25 15:48:34,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 15:48:34,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 15:48:34,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 405 transitions. [2022-11-25 15:48:34,997 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49150485436893204 [2022-11-25 15:48:34,997 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 405 transitions. [2022-11-25 15:48:34,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 405 transitions. [2022-11-25 15:48:34,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:48:34,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 405 transitions. [2022-11-25 15:48:35,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 101.25) internal successors, (405), 4 states have internal predecessors, (405), 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) [2022-11-25 15:48:35,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 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) [2022-11-25 15:48:35,004 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 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) [2022-11-25 15:48:35,004 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 83 flow. Second operand 4 states and 405 transitions. [2022-11-25 15:48:35,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 45 transitions, 217 flow [2022-11-25 15:48:35,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 45 transitions, 201 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 15:48:35,014 INFO L231 Difference]: Finished difference. Result has 36 places, 33 transitions, 120 flow [2022-11-25 15:48:35,014 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=120, PETRI_PLACES=36, PETRI_TRANSITIONS=33} [2022-11-25 15:48:35,016 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2022-11-25 15:48:35,017 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 33 transitions, 120 flow [2022-11-25 15:48:35,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 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) [2022-11-25 15:48:35,017 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:48:35,017 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:48:35,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 15:48:35,018 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2022-11-25 15:48:35,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:48:35,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1713245181, now seen corresponding path program 1 times [2022-11-25 15:48:35,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:48:35,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292186426] [2022-11-25 15:48:35,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:48:35,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:48:35,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:48:35,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:48:35,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:48:35,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292186426] [2022-11-25 15:48:35,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292186426] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:48:35,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:48:35,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 15:48:35,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975195820] [2022-11-25 15:48:35,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:48:35,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:48:35,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:48:35,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:48:35,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:48:35,192 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 206 [2022-11-25 15:48:35,193 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 33 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 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) [2022-11-25 15:48:35,193 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:48:35,193 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 206 [2022-11-25 15:48:35,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:48:35,249 INFO L130 PetriNetUnfolder]: 32/130 cut-off events. [2022-11-25 15:48:35,249 INFO L131 PetriNetUnfolder]: For 39/42 co-relation queries the response was YES. [2022-11-25 15:48:35,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330 conditions, 130 events. 32/130 cut-off events. For 39/42 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 462 event pairs, 29 based on Foata normal form. 2/121 useless extension candidates. Maximal degree in co-relation 324. Up to 96 conditions per place. [2022-11-25 15:48:35,251 INFO L137 encePairwiseOnDemand]: 203/206 looper letters, 21 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2022-11-25 15:48:35,251 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 31 transitions, 157 flow [2022-11-25 15:48:35,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:48:35,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:48:35,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 311 transitions. [2022-11-25 15:48:35,253 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5032362459546925 [2022-11-25 15:48:35,253 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 311 transitions. [2022-11-25 15:48:35,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 311 transitions. [2022-11-25 15:48:35,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:48:35,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 311 transitions. [2022-11-25 15:48:35,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 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) [2022-11-25 15:48:35,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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) [2022-11-25 15:48:35,257 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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) [2022-11-25 15:48:35,257 INFO L175 Difference]: Start difference. First operand has 36 places, 33 transitions, 120 flow. Second operand 3 states and 311 transitions. [2022-11-25 15:48:35,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 31 transitions, 157 flow [2022-11-25 15:48:35,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 31 transitions, 156 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 15:48:35,260 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 114 flow [2022-11-25 15:48:35,260 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2022-11-25 15:48:35,260 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2022-11-25 15:48:35,261 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 114 flow [2022-11-25 15:48:35,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 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) [2022-11-25 15:48:35,261 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:48:35,261 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:48:35,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 15:48:35,262 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2022-11-25 15:48:35,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:48:35,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1713245180, now seen corresponding path program 1 times [2022-11-25 15:48:35,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:48:35,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096211806] [2022-11-25 15:48:35,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:48:35,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:48:35,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:48:35,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:48:35,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:48:35,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096211806] [2022-11-25 15:48:35,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096211806] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:48:35,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:48:35,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 15:48:35,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514346386] [2022-11-25 15:48:35,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:48:35,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:48:35,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:48:35,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:48:35,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:48:35,391 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 206 [2022-11-25 15:48:35,391 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 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) [2022-11-25 15:48:35,391 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:48:35,392 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 206 [2022-11-25 15:48:35,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:48:35,436 INFO L130 PetriNetUnfolder]: 25/108 cut-off events. [2022-11-25 15:48:35,436 INFO L131 PetriNetUnfolder]: For 34/37 co-relation queries the response was YES. [2022-11-25 15:48:35,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273 conditions, 108 events. 25/108 cut-off events. For 34/37 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 340 event pairs, 23 based on Foata normal form. 2/108 useless extension candidates. Maximal degree in co-relation 267. Up to 80 conditions per place. [2022-11-25 15:48:35,437 INFO L137 encePairwiseOnDemand]: 203/206 looper letters, 19 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2022-11-25 15:48:35,437 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 29 transitions, 147 flow [2022-11-25 15:48:35,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:48:35,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:48:35,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 301 transitions. [2022-11-25 15:48:35,439 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48705501618122976 [2022-11-25 15:48:35,439 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 301 transitions. [2022-11-25 15:48:35,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 301 transitions. [2022-11-25 15:48:35,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:48:35,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 301 transitions. [2022-11-25 15:48:35,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 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) [2022-11-25 15:48:35,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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) [2022-11-25 15:48:35,442 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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) [2022-11-25 15:48:35,443 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 114 flow. Second operand 3 states and 301 transitions. [2022-11-25 15:48:35,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 29 transitions, 147 flow [2022-11-25 15:48:35,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 29 transitions, 143 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 15:48:35,445 INFO L231 Difference]: Finished difference. Result has 35 places, 29 transitions, 105 flow [2022-11-25 15:48:35,445 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=105, PETRI_PLACES=35, PETRI_TRANSITIONS=29} [2022-11-25 15:48:35,446 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 1 predicate places. [2022-11-25 15:48:35,446 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 105 flow [2022-11-25 15:48:35,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 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) [2022-11-25 15:48:35,446 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:48:35,446 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:48:35,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 15:48:35,447 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2022-11-25 15:48:35,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:48:35,447 INFO L85 PathProgramCache]: Analyzing trace with hash 430263773, now seen corresponding path program 1 times [2022-11-25 15:48:35,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:48:35,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262160775] [2022-11-25 15:48:35,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:48:35,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:48:35,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:48:35,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:48:35,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:48:35,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262160775] [2022-11-25 15:48:35,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262160775] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:48:35,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:48:35,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 15:48:35,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727845469] [2022-11-25 15:48:35,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:48:35,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 15:48:35,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:48:35,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 15:48:35,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-25 15:48:36,034 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 206 [2022-11-25 15:48:36,035 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 105 flow. Second operand has 6 states, 6 states have (on average 91.5) internal successors, (549), 6 states have internal predecessors, (549), 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) [2022-11-25 15:48:36,036 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:48:36,036 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 206 [2022-11-25 15:48:36,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:48:36,114 INFO L130 PetriNetUnfolder]: 13/79 cut-off events. [2022-11-25 15:48:36,115 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-11-25 15:48:36,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 79 events. 13/79 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 175 event pairs, 3 based on Foata normal form. 11/90 useless extension candidates. Maximal degree in co-relation 207. Up to 46 conditions per place. [2022-11-25 15:48:36,116 INFO L137 encePairwiseOnDemand]: 201/206 looper letters, 23 selfloop transitions, 6 changer transitions 0/31 dead transitions. [2022-11-25 15:48:36,116 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 31 transitions, 168 flow [2022-11-25 15:48:36,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 15:48:36,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 15:48:36,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 385 transitions. [2022-11-25 15:48:36,118 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4672330097087379 [2022-11-25 15:48:36,118 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 385 transitions. [2022-11-25 15:48:36,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 385 transitions. [2022-11-25 15:48:36,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:48:36,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 385 transitions. [2022-11-25 15:48:36,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 96.25) internal successors, (385), 4 states have internal predecessors, (385), 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) [2022-11-25 15:48:36,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 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) [2022-11-25 15:48:36,123 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 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) [2022-11-25 15:48:36,123 INFO L175 Difference]: Start difference. First operand has 35 places, 29 transitions, 105 flow. Second operand 4 states and 385 transitions. [2022-11-25 15:48:36,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 31 transitions, 168 flow [2022-11-25 15:48:36,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 31 transitions, 159 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-11-25 15:48:36,125 INFO L231 Difference]: Finished difference. Result has 34 places, 26 transitions, 95 flow [2022-11-25 15:48:36,126 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=95, PETRI_PLACES=34, PETRI_TRANSITIONS=26} [2022-11-25 15:48:36,127 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places. [2022-11-25 15:48:36,127 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 26 transitions, 95 flow [2022-11-25 15:48:36,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 91.5) internal successors, (549), 6 states have internal predecessors, (549), 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) [2022-11-25 15:48:36,128 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:48:36,128 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:48:36,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 15:48:36,128 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2022-11-25 15:48:36,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:48:36,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1574824837, now seen corresponding path program 1 times [2022-11-25 15:48:36,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:48:36,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419556605] [2022-11-25 15:48:36,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:48:36,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:48:36,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:48:36,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:48:36,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:48:36,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419556605] [2022-11-25 15:48:36,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419556605] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:48:36,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:48:36,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 15:48:36,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631077790] [2022-11-25 15:48:36,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:48:36,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:48:36,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:48:36,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:48:36,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:48:36,370 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 206 [2022-11-25 15:48:36,371 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 26 transitions, 95 flow. Second operand has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 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) [2022-11-25 15:48:36,371 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:48:36,371 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 206 [2022-11-25 15:48:36,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:48:36,408 INFO L130 PetriNetUnfolder]: 11/74 cut-off events. [2022-11-25 15:48:36,408 INFO L131 PetriNetUnfolder]: For 31/32 co-relation queries the response was YES. [2022-11-25 15:48:36,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 74 events. 11/74 cut-off events. For 31/32 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 163 event pairs, 10 based on Foata normal form. 1/74 useless extension candidates. Maximal degree in co-relation 191. Up to 52 conditions per place. [2022-11-25 15:48:36,409 INFO L137 encePairwiseOnDemand]: 204/206 looper letters, 0 selfloop transitions, 0 changer transitions 25/25 dead transitions. [2022-11-25 15:48:36,409 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 25 transitions, 129 flow [2022-11-25 15:48:36,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:48:36,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:48:36,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 311 transitions. [2022-11-25 15:48:36,411 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5032362459546925 [2022-11-25 15:48:36,411 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 311 transitions. [2022-11-25 15:48:36,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 311 transitions. [2022-11-25 15:48:36,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:48:36,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 311 transitions. [2022-11-25 15:48:36,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 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) [2022-11-25 15:48:36,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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) [2022-11-25 15:48:36,415 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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) [2022-11-25 15:48:36,415 INFO L175 Difference]: Start difference. First operand has 34 places, 26 transitions, 95 flow. Second operand 3 states and 311 transitions. [2022-11-25 15:48:36,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 25 transitions, 129 flow [2022-11-25 15:48:36,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 25 transitions, 123 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 15:48:36,416 INFO L231 Difference]: Finished difference. Result has 33 places, 0 transitions, 0 flow [2022-11-25 15:48:36,417 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=33, PETRI_TRANSITIONS=0} [2022-11-25 15:48:36,417 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, -1 predicate places. [2022-11-25 15:48:36,418 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 0 transitions, 0 flow [2022-11-25 15:48:36,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 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) [2022-11-25 15:48:36,421 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 8 remaining) [2022-11-25 15:48:36,422 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2022-11-25 15:48:36,422 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (5 of 8 remaining) [2022-11-25 15:48:36,422 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (4 of 8 remaining) [2022-11-25 15:48:36,422 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 8 remaining) [2022-11-25 15:48:36,423 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 8 remaining) [2022-11-25 15:48:36,423 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (1 of 8 remaining) [2022-11-25 15:48:36,423 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2022-11-25 15:48:36,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 15:48:36,424 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:48:36,428 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-25 15:48:36,428 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 15:48:36,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 03:48:36 BasicIcfg [2022-11-25 15:48:36,432 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 15:48:36,433 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 15:48:36,433 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 15:48:36,433 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 15:48:36,434 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:48:27" (3/4) ... [2022-11-25 15:48:36,437 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 15:48:36,446 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2022-11-25 15:48:36,451 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-11-25 15:48:36,451 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-25 15:48:36,452 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-25 15:48:36,452 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 15:48:36,491 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_358c0362-c43a-4df8-b727-251320b12583/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 15:48:36,491 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 15:48:36,492 INFO L158 Benchmark]: Toolchain (without parser) took 10621.83ms. Allocated memory was 159.4MB in the beginning and 232.8MB in the end (delta: 73.4MB). Free memory was 124.3MB in the beginning and 100.6MB in the end (delta: 23.6MB). Peak memory consumption was 95.6MB. Max. memory is 16.1GB. [2022-11-25 15:48:36,493 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 125.8MB. Free memory was 94.6MB in the beginning and 94.5MB in the end (delta: 74.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 15:48:36,493 INFO L158 Benchmark]: CACSL2BoogieTranslator took 630.12ms. Allocated memory is still 159.4MB. Free memory was 124.3MB in the beginning and 113.4MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 15:48:36,493 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.39ms. Allocated memory is still 159.4MB. Free memory was 113.4MB in the beginning and 111.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 15:48:36,494 INFO L158 Benchmark]: Boogie Preprocessor took 60.99ms. Allocated memory is still 159.4MB. Free memory was 111.3MB in the beginning and 109.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 15:48:36,494 INFO L158 Benchmark]: RCFGBuilder took 615.59ms. Allocated memory is still 159.4MB. Free memory was 109.9MB in the beginning and 94.5MB in the end (delta: 15.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-25 15:48:36,495 INFO L158 Benchmark]: TraceAbstraction took 9167.34ms. Allocated memory was 159.4MB in the beginning and 232.8MB in the end (delta: 73.4MB). Free memory was 93.8MB in the beginning and 102.7MB in the end (delta: -8.9MB). Peak memory consumption was 65.9MB. Max. memory is 16.1GB. [2022-11-25 15:48:36,495 INFO L158 Benchmark]: Witness Printer took 58.61ms. Allocated memory is still 232.8MB. Free memory was 102.7MB in the beginning and 100.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 15:48:36,497 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 125.8MB. Free memory was 94.6MB in the beginning and 94.5MB in the end (delta: 74.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 630.12ms. Allocated memory is still 159.4MB. Free memory was 124.3MB in the beginning and 113.4MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 81.39ms. Allocated memory is still 159.4MB. Free memory was 113.4MB in the beginning and 111.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 60.99ms. Allocated memory is still 159.4MB. Free memory was 111.3MB in the beginning and 109.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 615.59ms. Allocated memory is still 159.4MB. Free memory was 109.9MB in the beginning and 94.5MB in the end (delta: 15.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 9167.34ms. Allocated memory was 159.4MB in the beginning and 232.8MB in the end (delta: 73.4MB). Free memory was 93.8MB in the beginning and 102.7MB in the end (delta: -8.9MB). Peak memory consumption was 65.9MB. Max. memory is 16.1GB. * Witness Printer took 58.61ms. Allocated memory is still 232.8MB. Free memory was 102.7MB in the beginning and 100.6MB in the end (delta: 2.1MB). 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: 5.1s, 104 PlacesBefore, 34 PlacesAfterwards, 102 TransitionsBefore, 32 TransitionsAfterwards, 1258 CoEnabledTransitionPairs, 8 FixpointIterations, 50 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 0 ChoiceCompositions, 98 TotalNumberOfCompositions, 5522 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1753, independent: 1446, independent conditional: 0, independent unconditional: 1446, dependent: 307, dependent conditional: 0, dependent unconditional: 307, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 925, independent: 868, independent conditional: 0, independent unconditional: 868, dependent: 57, dependent conditional: 0, dependent unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 925, independent: 806, independent conditional: 0, independent unconditional: 806, dependent: 119, dependent conditional: 0, dependent unconditional: 119, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 119, independent: 62, independent conditional: 0, independent unconditional: 62, dependent: 57, dependent conditional: 0, dependent unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 316, independent: 106, independent conditional: 0, independent unconditional: 106, dependent: 210, dependent conditional: 0, dependent unconditional: 210, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1753, independent: 578, independent conditional: 0, independent unconditional: 578, dependent: 250, dependent conditional: 0, dependent unconditional: 250, unknown: 925, unknown conditional: 0, unknown unconditional: 925] , Statistics on independence cache: Total cache size (in pairs): 102, Positive cache size: 68, Positive conditional cache size: 0, Positive unconditional cache size: 68, Negative cache size: 34, Negative conditional cache size: 0, Negative unconditional cache size: 34, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 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: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed 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: 698]: 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 3 procedures, 126 locations, 8 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 9.0s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 545 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 318 mSDsluCounter, 50 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 25 mSDsCounter, 123 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 816 IncrementalHoareTripleChecker+Invalid, 939 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 123 mSolverCounterUnsat, 25 mSDtfsCounter, 816 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=120occurred in iteration=4, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 592 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-25 15:48:36,519 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_358c0362-c43a-4df8-b727-251320b12583/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE