./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/chl-sre-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16616267-969c-4e76-aafa-c75f7469d8db/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16616267-969c-4e76-aafa-c75f7469d8db/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_16616267-969c-4e76-aafa-c75f7469d8db/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16616267-969c-4e76-aafa-c75f7469d8db/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-sre-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16616267-969c-4e76-aafa-c75f7469d8db/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_16616267-969c-4e76-aafa-c75f7469d8db/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 039f5312b62da5ff616f0ade8cc5a2dd494698e7519842b003d8d55f65a5fe6c --- 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 17:12:58,792 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:12:58,794 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:12:58,817 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:12:58,818 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:12:58,819 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:12:58,820 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:12:58,822 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:12:58,824 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:12:58,825 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:12:58,826 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:12:58,827 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:12:58,827 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:12:58,828 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:12:58,829 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:12:58,831 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:12:58,831 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:12:58,832 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:12:58,834 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:12:58,836 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:12:58,838 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:12:58,839 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:12:58,840 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:12:58,841 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:12:58,845 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:12:58,846 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:12:58,846 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:12:58,847 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:12:58,847 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:12:58,848 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:12:58,849 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:12:58,850 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:12:58,851 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:12:58,851 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:12:58,853 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:12:58,853 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:12:58,854 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:12:58,854 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:12:58,854 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:12:58,855 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:12:58,856 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:12:58,857 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16616267-969c-4e76-aafa-c75f7469d8db/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-25 17:12:58,880 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:12:58,880 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:12:58,880 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:12:58,881 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:12:58,881 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:12:58,882 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:12:58,882 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:12:58,883 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:12:58,883 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:12:58,883 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:12:58,883 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:12:58,884 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:12:58,884 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:12:58,884 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:12:58,884 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:12:58,884 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 17:12:58,885 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 17:12:58,885 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 17:12:58,885 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:12:58,885 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 17:12:58,885 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:12:58,886 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:12:58,886 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:12:58,886 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:12:58,886 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:12:58,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:12:58,887 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:12:58,887 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:12:58,887 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:12:58,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:12:58,888 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:12:58,888 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:12:58,888 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:12:58,888 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_16616267-969c-4e76-aafa-c75f7469d8db/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16616267-969c-4e76-aafa-c75f7469d8db/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 039f5312b62da5ff616f0ade8cc5a2dd494698e7519842b003d8d55f65a5fe6c [2022-11-25 17:12:59,165 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:12:59,190 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:12:59,192 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:12:59,194 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:12:59,194 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:12:59,196 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16616267-969c-4e76-aafa-c75f7469d8db/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/chl-sre-subst.wvr.c [2022-11-25 17:13:02,332 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:13:02,598 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:13:02,598 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16616267-969c-4e76-aafa-c75f7469d8db/sv-benchmarks/c/weaver/chl-sre-subst.wvr.c [2022-11-25 17:13:02,607 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16616267-969c-4e76-aafa-c75f7469d8db/bin/uautomizer-ZsLfNo2U6R/data/069a030e3/970c029b99834f819a78d32c174eb7db/FLAGc67daa035 [2022-11-25 17:13:02,626 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16616267-969c-4e76-aafa-c75f7469d8db/bin/uautomizer-ZsLfNo2U6R/data/069a030e3/970c029b99834f819a78d32c174eb7db [2022-11-25 17:13:02,632 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:13:02,636 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:13:02,638 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:13:02,638 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:13:02,642 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:13:02,643 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:13:02" (1/1) ... [2022-11-25 17:13:02,644 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fa99a59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:13:02, skipping insertion in model container [2022-11-25 17:13:02,644 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:13:02" (1/1) ... [2022-11-25 17:13:02,652 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:13:02,678 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:13:02,946 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_16616267-969c-4e76-aafa-c75f7469d8db/sv-benchmarks/c/weaver/chl-sre-subst.wvr.c[2333,2346] [2022-11-25 17:13:02,951 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:13:02,971 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:13:03,025 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_16616267-969c-4e76-aafa-c75f7469d8db/sv-benchmarks/c/weaver/chl-sre-subst.wvr.c[2333,2346] [2022-11-25 17:13:03,026 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:13:03,049 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:13:03,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:13:03 WrapperNode [2022-11-25 17:13:03,050 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:13:03,052 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:13:03,052 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:13:03,052 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:13:03,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:13:03" (1/1) ... [2022-11-25 17:13:03,082 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:13:03" (1/1) ... [2022-11-25 17:13:03,120 INFO L138 Inliner]: procedures = 22, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 74 [2022-11-25 17:13:03,120 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:13:03,121 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:13:03,121 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:13:03,121 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:13:03,133 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:13:03" (1/1) ... [2022-11-25 17:13:03,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:13:03" (1/1) ... [2022-11-25 17:13:03,142 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:13:03" (1/1) ... [2022-11-25 17:13:03,143 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:13:03" (1/1) ... [2022-11-25 17:13:03,158 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:13:03" (1/1) ... [2022-11-25 17:13:03,160 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:13:03" (1/1) ... [2022-11-25 17:13:03,162 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:13:03" (1/1) ... [2022-11-25 17:13:03,163 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:13:03" (1/1) ... [2022-11-25 17:13:03,165 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:13:03,166 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:13:03,166 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:13:03,167 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:13:03,168 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:13:03" (1/1) ... [2022-11-25 17:13:03,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:13:03,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16616267-969c-4e76-aafa-c75f7469d8db/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:13:03,208 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16616267-969c-4e76-aafa-c75f7469d8db/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:13:03,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16616267-969c-4e76-aafa-c75f7469d8db/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:13:03,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:13:03,266 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 17:13:03,266 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 17:13:03,267 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 17:13:03,267 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 17:13:03,267 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-25 17:13:03,267 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-25 17:13:03,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:13:03,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:13:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:13:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:13:03,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:13:03,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 17:13:03,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:13:03,275 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 17:13:03,381 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:13:03,383 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:13:03,727 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:13:03,735 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:13:03,735 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 17:13:03,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:13:03 BoogieIcfgContainer [2022-11-25 17:13:03,738 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:13:03,740 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:13:03,751 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:13:03,756 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:13:03,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:13:02" (1/3) ... [2022-11-25 17:13:03,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@607b2b0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:13:03, skipping insertion in model container [2022-11-25 17:13:03,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:13:03" (2/3) ... [2022-11-25 17:13:03,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@607b2b0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:13:03, skipping insertion in model container [2022-11-25 17:13:03,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:13:03" (3/3) ... [2022-11-25 17:13:03,762 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-sre-subst.wvr.c [2022-11-25 17:13:03,783 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:13:03,783 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-11-25 17:13:03,783 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:13:03,891 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-25 17:13:03,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 110 transitions, 244 flow [2022-11-25 17:13:03,984 INFO L130 PetriNetUnfolder]: 2/107 cut-off events. [2022-11-25 17:13:03,984 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 17:13:03,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 107 events. 2/107 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 57 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2022-11-25 17:13:03,988 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 110 transitions, 244 flow [2022-11-25 17:13:03,993 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 102 transitions, 222 flow [2022-11-25 17:13:03,997 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:13:04,014 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 110 places, 102 transitions, 222 flow [2022-11-25 17:13:04,017 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 110 places, 102 transitions, 222 flow [2022-11-25 17:13:04,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 102 transitions, 222 flow [2022-11-25 17:13:04,047 INFO L130 PetriNetUnfolder]: 2/102 cut-off events. [2022-11-25 17:13:04,048 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 17:13:04,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 102 events. 2/102 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 57 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2022-11-25 17:13:04,049 INFO L119 LiptonReduction]: Number of co-enabled transitions 378 [2022-11-25 17:13:08,553 INFO L134 LiptonReduction]: Checked pairs total: 608 [2022-11-25 17:13:08,553 INFO L136 LiptonReduction]: Total number of compositions: 99 [2022-11-25 17:13:08,571 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:13:08,577 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;@5bfb2820, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:13:08,577 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-25 17:13:08,580 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2022-11-25 17:13:08,580 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:13:08,580 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:13:08,581 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-11-25 17:13:08,581 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 17:13:08,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:13:08,586 INFO L85 PathProgramCache]: Analyzing trace with hash 367, now seen corresponding path program 1 times [2022-11-25 17:13:08,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:13:08,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631804532] [2022-11-25 17:13:08,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:13:08,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:13:08,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:08,696 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 17:13:08,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:13:08,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631804532] [2022-11-25 17:13:08,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631804532] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:13:08,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:13:08,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-25 17:13:08,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511329083] [2022-11-25 17:13:08,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:13:08,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 17:13:08,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:13:08,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 17:13:08,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 17:13:08,733 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 209 [2022-11-25 17:13:08,735 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 29 transitions, 76 flow. Second operand has 2 states, 2 states have (on average 101.5) internal successors, (203), 2 states have internal predecessors, (203), 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 17:13:08,736 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:13:08,736 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 209 [2022-11-25 17:13:08,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:13:08,872 INFO L130 PetriNetUnfolder]: 81/164 cut-off events. [2022-11-25 17:13:08,872 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-25 17:13:08,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354 conditions, 164 events. 81/164 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 458 event pairs, 81 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 244. Up to 165 conditions per place. [2022-11-25 17:13:08,879 INFO L137 encePairwiseOnDemand]: 206/209 looper letters, 26 selfloop transitions, 0 changer transitions 0/26 dead transitions. [2022-11-25 17:13:08,880 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 26 transitions, 122 flow [2022-11-25 17:13:08,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 17:13:08,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-25 17:13:08,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 231 transitions. [2022-11-25 17:13:08,898 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5526315789473685 [2022-11-25 17:13:08,899 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 231 transitions. [2022-11-25 17:13:08,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 231 transitions. [2022-11-25 17:13:08,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:13:08,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 231 transitions. [2022-11-25 17:13:08,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 115.5) internal successors, (231), 2 states have internal predecessors, (231), 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 17:13:08,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 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 17:13:08,918 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 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 17:13:08,920 INFO L175 Difference]: Start difference. First operand has 39 places, 29 transitions, 76 flow. Second operand 2 states and 231 transitions. [2022-11-25 17:13:08,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 26 transitions, 122 flow [2022-11-25 17:13:08,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 26 transitions, 110 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-25 17:13:08,925 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 58 flow [2022-11-25 17:13:08,928 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=58, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2022-11-25 17:13:08,933 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, -8 predicate places. [2022-11-25 17:13:08,934 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 58 flow [2022-11-25 17:13:08,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 101.5) internal successors, (203), 2 states have internal predecessors, (203), 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 17:13:08,934 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:13:08,935 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 17:13:08,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:13:08,935 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 17:13:08,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:13:08,947 INFO L85 PathProgramCache]: Analyzing trace with hash 362245, now seen corresponding path program 1 times [2022-11-25 17:13:08,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:13:08,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925381904] [2022-11-25 17:13:08,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:13:08,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:13:08,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:09,159 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 17:13:09,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:13:09,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925381904] [2022-11-25 17:13:09,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925381904] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:13:09,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:13:09,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:13:09,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198039498] [2022-11-25 17:13:09,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:13:09,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:13:09,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:13:09,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:13:09,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:13:09,245 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 209 [2022-11-25 17:13:09,246 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 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 17:13:09,246 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:13:09,246 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 209 [2022-11-25 17:13:09,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:13:09,331 INFO L130 PetriNetUnfolder]: 76/153 cut-off events. [2022-11-25 17:13:09,331 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:13:09,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 153 events. 76/153 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 414 event pairs, 76 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 313. Up to 153 conditions per place. [2022-11-25 17:13:09,333 INFO L137 encePairwiseOnDemand]: 206/209 looper letters, 23 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2022-11-25 17:13:09,334 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 24 transitions, 102 flow [2022-11-25 17:13:09,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:13:09,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:13:09,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 299 transitions. [2022-11-25 17:13:09,337 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4768740031897927 [2022-11-25 17:13:09,337 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 299 transitions. [2022-11-25 17:13:09,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 299 transitions. [2022-11-25 17:13:09,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:13:09,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 299 transitions. [2022-11-25 17:13:09,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 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 17:13:09,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 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 17:13:09,343 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 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 17:13:09,343 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 58 flow. Second operand 3 states and 299 transitions. [2022-11-25 17:13:09,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 24 transitions, 102 flow [2022-11-25 17:13:09,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 24 transitions, 102 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:13:09,345 INFO L231 Difference]: Finished difference. Result has 31 places, 24 transitions, 56 flow [2022-11-25 17:13:09,345 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=31, PETRI_TRANSITIONS=24} [2022-11-25 17:13:09,346 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, -8 predicate places. [2022-11-25 17:13:09,346 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 24 transitions, 56 flow [2022-11-25 17:13:09,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 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 17:13:09,347 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:13:09,347 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 17:13:09,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:13:09,348 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 17:13:09,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:13:09,349 INFO L85 PathProgramCache]: Analyzing trace with hash 362246, now seen corresponding path program 1 times [2022-11-25 17:13:09,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:13:09,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428945545] [2022-11-25 17:13:09,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:13:09,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:13:09,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:09,570 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 17:13:09,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:13:09,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428945545] [2022-11-25 17:13:09,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428945545] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:13:09,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:13:09,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:13:09,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253355978] [2022-11-25 17:13:09,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:13:09,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:13:09,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:13:09,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:13:09,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:13:09,629 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 209 [2022-11-25 17:13:09,630 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 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 17:13:09,630 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:13:09,630 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 209 [2022-11-25 17:13:09,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:13:09,690 INFO L130 PetriNetUnfolder]: 71/142 cut-off events. [2022-11-25 17:13:09,690 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:13:09,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296 conditions, 142 events. 71/142 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 374 event pairs, 71 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 292. Up to 142 conditions per place. [2022-11-25 17:13:09,692 INFO L137 encePairwiseOnDemand]: 206/209 looper letters, 21 selfloop transitions, 1 changer transitions 0/22 dead transitions. [2022-11-25 17:13:09,692 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 22 transitions, 96 flow [2022-11-25 17:13:09,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:13:09,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:13:09,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 312 transitions. [2022-11-25 17:13:09,695 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49760765550239233 [2022-11-25 17:13:09,695 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 312 transitions. [2022-11-25 17:13:09,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 312 transitions. [2022-11-25 17:13:09,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:13:09,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 312 transitions. [2022-11-25 17:13:09,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 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 17:13:09,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 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 17:13:09,699 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 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 17:13:09,699 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 56 flow. Second operand 3 states and 312 transitions. [2022-11-25 17:13:09,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 22 transitions, 96 flow [2022-11-25 17:13:09,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 22 transitions, 95 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:13:09,701 INFO L231 Difference]: Finished difference. Result has 30 places, 22 transitions, 53 flow [2022-11-25 17:13:09,701 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=30, PETRI_TRANSITIONS=22} [2022-11-25 17:13:09,702 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, -9 predicate places. [2022-11-25 17:13:09,702 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 53 flow [2022-11-25 17:13:09,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 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 17:13:09,703 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:13:09,703 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:13:09,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 17:13:09,703 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 17:13:09,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:13:09,704 INFO L85 PathProgramCache]: Analyzing trace with hash 348124056, now seen corresponding path program 1 times [2022-11-25 17:13:09,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:13:09,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302964242] [2022-11-25 17:13:09,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:13:09,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:13:09,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:09,820 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 17:13:09,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:13:09,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302964242] [2022-11-25 17:13:09,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302964242] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:13:09,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:13:09,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:13:09,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256929386] [2022-11-25 17:13:09,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:13:09,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:13:09,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:13:09,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:13:09,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:13:09,874 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 209 [2022-11-25 17:13:09,875 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 53 flow. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 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 17:13:09,875 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:13:09,876 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 209 [2022-11-25 17:13:09,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:13:09,958 INFO L130 PetriNetUnfolder]: 66/131 cut-off events. [2022-11-25 17:13:09,958 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:13:09,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 131 events. 66/131 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 334 event pairs, 66 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 271. Up to 131 conditions per place. [2022-11-25 17:13:09,962 INFO L137 encePairwiseOnDemand]: 206/209 looper letters, 19 selfloop transitions, 1 changer transitions 0/20 dead transitions. [2022-11-25 17:13:09,962 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 20 transitions, 89 flow [2022-11-25 17:13:09,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:13:09,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:13:09,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 310 transitions. [2022-11-25 17:13:09,967 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4944178628389155 [2022-11-25 17:13:09,967 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 310 transitions. [2022-11-25 17:13:09,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 310 transitions. [2022-11-25 17:13:09,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:13:09,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 310 transitions. [2022-11-25 17:13:09,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 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 17:13:09,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 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 17:13:09,976 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 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 17:13:09,976 INFO L175 Difference]: Start difference. First operand has 30 places, 22 transitions, 53 flow. Second operand 3 states and 310 transitions. [2022-11-25 17:13:09,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 20 transitions, 89 flow [2022-11-25 17:13:09,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 20 transitions, 88 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:13:09,978 INFO L231 Difference]: Finished difference. Result has 29 places, 20 transitions, 50 flow [2022-11-25 17:13:09,978 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=29, PETRI_TRANSITIONS=20} [2022-11-25 17:13:09,980 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, -10 predicate places. [2022-11-25 17:13:09,980 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 20 transitions, 50 flow [2022-11-25 17:13:09,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 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 17:13:09,981 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:13:09,981 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:13:09,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 17:13:09,983 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 17:13:09,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:13:09,983 INFO L85 PathProgramCache]: Analyzing trace with hash 348124055, now seen corresponding path program 1 times [2022-11-25 17:13:09,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:13:09,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009893819] [2022-11-25 17:13:09,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:13:09,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:13:10,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:10,087 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 17:13:10,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:13:10,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009893819] [2022-11-25 17:13:10,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009893819] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:13:10,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:13:10,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:13:10,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598052951] [2022-11-25 17:13:10,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:13:10,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:13:10,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:13:10,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:13:10,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:13:10,155 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 209 [2022-11-25 17:13:10,155 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 20 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 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 17:13:10,156 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:13:10,156 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 209 [2022-11-25 17:13:10,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:13:10,204 INFO L130 PetriNetUnfolder]: 61/120 cut-off events. [2022-11-25 17:13:10,205 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:13:10,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 120 events. 61/120 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 296 event pairs, 61 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 250. Up to 120 conditions per place. [2022-11-25 17:13:10,206 INFO L137 encePairwiseOnDemand]: 206/209 looper letters, 17 selfloop transitions, 1 changer transitions 0/18 dead transitions. [2022-11-25 17:13:10,206 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 18 transitions, 82 flow [2022-11-25 17:13:10,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:13:10,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:13:10,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 293 transitions. [2022-11-25 17:13:10,208 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46730462519936206 [2022-11-25 17:13:10,208 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 293 transitions. [2022-11-25 17:13:10,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 293 transitions. [2022-11-25 17:13:10,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:13:10,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 293 transitions. [2022-11-25 17:13:10,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 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 17:13:10,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 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 17:13:10,212 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 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 17:13:10,212 INFO L175 Difference]: Start difference. First operand has 29 places, 20 transitions, 50 flow. Second operand 3 states and 293 transitions. [2022-11-25 17:13:10,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 18 transitions, 82 flow [2022-11-25 17:13:10,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 18 transitions, 81 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:13:10,213 INFO L231 Difference]: Finished difference. Result has 28 places, 18 transitions, 47 flow [2022-11-25 17:13:10,213 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=45, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=47, PETRI_PLACES=28, PETRI_TRANSITIONS=18} [2022-11-25 17:13:10,214 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, -11 predicate places. [2022-11-25 17:13:10,214 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 18 transitions, 47 flow [2022-11-25 17:13:10,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 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 17:13:10,215 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:13:10,215 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:13:10,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 17:13:10,216 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 17:13:10,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:13:10,216 INFO L85 PathProgramCache]: Analyzing trace with hash -460225508, now seen corresponding path program 1 times [2022-11-25 17:13:10,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:13:10,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710717282] [2022-11-25 17:13:10,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:13:10,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:13:10,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:10,398 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 17:13:10,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:13:10,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710717282] [2022-11-25 17:13:10,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710717282] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:13:10,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:13:10,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:13:10,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005826995] [2022-11-25 17:13:10,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:13:10,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:13:10,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:13:10,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:13:10,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:13:10,523 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 209 [2022-11-25 17:13:10,524 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 18 transitions, 47 flow. Second operand has 5 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 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 17:13:10,524 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:13:10,525 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 209 [2022-11-25 17:13:10,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:13:10,568 INFO L130 PetriNetUnfolder]: 49/100 cut-off events. [2022-11-25 17:13:10,568 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:13:10,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 100 events. 49/100 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 220 event pairs, 49 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 211. Up to 100 conditions per place. [2022-11-25 17:13:10,569 INFO L137 encePairwiseOnDemand]: 207/209 looper letters, 16 selfloop transitions, 1 changer transitions 0/17 dead transitions. [2022-11-25 17:13:10,569 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 17 transitions, 79 flow [2022-11-25 17:13:10,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:13:10,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:13:10,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 267 transitions. [2022-11-25 17:13:10,571 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4258373205741627 [2022-11-25 17:13:10,571 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 267 transitions. [2022-11-25 17:13:10,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 267 transitions. [2022-11-25 17:13:10,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:13:10,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 267 transitions. [2022-11-25 17:13:10,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 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 17:13:10,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 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 17:13:10,574 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 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 17:13:10,575 INFO L175 Difference]: Start difference. First operand has 28 places, 18 transitions, 47 flow. Second operand 3 states and 267 transitions. [2022-11-25 17:13:10,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 17 transitions, 79 flow [2022-11-25 17:13:10,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 17 transitions, 78 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:13:10,576 INFO L231 Difference]: Finished difference. Result has 28 places, 17 transitions, 46 flow [2022-11-25 17:13:10,577 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=28, PETRI_TRANSITIONS=17} [2022-11-25 17:13:10,579 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, -11 predicate places. [2022-11-25 17:13:10,579 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 17 transitions, 46 flow [2022-11-25 17:13:10,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 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 17:13:10,580 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:13:10,580 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:13:10,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 17:13:10,581 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 17:13:10,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:13:10,584 INFO L85 PathProgramCache]: Analyzing trace with hash -460225507, now seen corresponding path program 1 times [2022-11-25 17:13:10,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:13:10,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579967157] [2022-11-25 17:13:10,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:13:10,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:13:10,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:10,746 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 17:13:10,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:13:10,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579967157] [2022-11-25 17:13:10,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579967157] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:13:10,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:13:10,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:13:10,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388566089] [2022-11-25 17:13:10,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:13:10,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:13:10,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:13:10,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:13:10,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:13:10,795 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 209 [2022-11-25 17:13:10,795 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 17 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 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 17:13:10,795 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:13:10,796 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 209 [2022-11-25 17:13:10,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:13:10,844 INFO L130 PetriNetUnfolder]: 37/80 cut-off events. [2022-11-25 17:13:10,845 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:13:10,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 80 events. 37/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 149 event pairs, 37 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 172. Up to 80 conditions per place. [2022-11-25 17:13:10,846 INFO L137 encePairwiseOnDemand]: 207/209 looper letters, 15 selfloop transitions, 1 changer transitions 0/16 dead transitions. [2022-11-25 17:13:10,846 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 16 transitions, 76 flow [2022-11-25 17:13:10,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:13:10,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:13:10,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 305 transitions. [2022-11-25 17:13:10,848 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4864433811802233 [2022-11-25 17:13:10,848 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 305 transitions. [2022-11-25 17:13:10,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 305 transitions. [2022-11-25 17:13:10,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:13:10,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 305 transitions. [2022-11-25 17:13:10,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 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 17:13:10,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 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 17:13:10,855 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 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 17:13:10,855 INFO L175 Difference]: Start difference. First operand has 28 places, 17 transitions, 46 flow. Second operand 3 states and 305 transitions. [2022-11-25 17:13:10,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 16 transitions, 76 flow [2022-11-25 17:13:10,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 16 transitions, 75 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:13:10,858 INFO L231 Difference]: Finished difference. Result has 28 places, 16 transitions, 45 flow [2022-11-25 17:13:10,858 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=45, PETRI_PLACES=28, PETRI_TRANSITIONS=16} [2022-11-25 17:13:10,859 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, -11 predicate places. [2022-11-25 17:13:10,859 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 16 transitions, 45 flow [2022-11-25 17:13:10,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 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 17:13:10,859 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:13:10,859 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:13:10,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 17:13:10,860 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 17:13:10,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:13:10,861 INFO L85 PathProgramCache]: Analyzing trace with hash -396835290, now seen corresponding path program 1 times [2022-11-25 17:13:10,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:13:10,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799796341] [2022-11-25 17:13:10,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:13:10,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:13:10,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:12,854 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 17:13:12,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:13:12,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799796341] [2022-11-25 17:13:12,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799796341] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:13:12,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:13:12,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:13:12,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083312217] [2022-11-25 17:13:12,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:13:12,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:13:12,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:13:12,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:13:12,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:13:12,930 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 209 [2022-11-25 17:13:12,931 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 16 transitions, 45 flow. Second operand has 5 states, 5 states have (on average 92.2) internal successors, (461), 5 states have internal predecessors, (461), 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 17:13:12,931 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:13:12,932 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 209 [2022-11-25 17:13:12,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:13:13,336 INFO L130 PetriNetUnfolder]: 40/106 cut-off events. [2022-11-25 17:13:13,336 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-25 17:13:13,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 106 events. 40/106 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 325 event pairs, 6 based on Foata normal form. 1/107 useless extension candidates. Maximal degree in co-relation 226. Up to 48 conditions per place. [2022-11-25 17:13:13,337 INFO L137 encePairwiseOnDemand]: 204/209 looper letters, 30 selfloop transitions, 6 changer transitions 9/45 dead transitions. [2022-11-25 17:13:13,337 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 45 transitions, 203 flow [2022-11-25 17:13:13,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:13:13,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:13:13,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 580 transitions. [2022-11-25 17:13:13,340 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4625199362041467 [2022-11-25 17:13:13,340 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 580 transitions. [2022-11-25 17:13:13,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 580 transitions. [2022-11-25 17:13:13,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:13:13,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 580 transitions. [2022-11-25 17:13:13,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 96.66666666666667) internal successors, (580), 6 states have internal predecessors, (580), 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 17:13:13,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 209.0) internal successors, (1463), 7 states have internal predecessors, (1463), 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 17:13:13,345 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 209.0) internal successors, (1463), 7 states have internal predecessors, (1463), 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 17:13:13,346 INFO L175 Difference]: Start difference. First operand has 28 places, 16 transitions, 45 flow. Second operand 6 states and 580 transitions. [2022-11-25 17:13:13,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 45 transitions, 203 flow [2022-11-25 17:13:13,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 45 transitions, 202 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:13:13,348 INFO L231 Difference]: Finished difference. Result has 35 places, 20 transitions, 77 flow [2022-11-25 17:13:13,348 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=77, PETRI_PLACES=35, PETRI_TRANSITIONS=20} [2022-11-25 17:13:13,348 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, -4 predicate places. [2022-11-25 17:13:13,349 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 20 transitions, 77 flow [2022-11-25 17:13:13,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 92.2) internal successors, (461), 5 states have internal predecessors, (461), 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 17:13:13,349 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:13:13,349 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:13:13,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 17:13:13,350 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 17:13:13,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:13:13,351 INFO L85 PathProgramCache]: Analyzing trace with hash 18966508, now seen corresponding path program 2 times [2022-11-25 17:13:13,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:13:13,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953568003] [2022-11-25 17:13:13,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:13:13,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:13:13,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:14,518 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 17:13:14,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:13:14,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953568003] [2022-11-25 17:13:14,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953568003] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:13:14,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:13:14,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:13:14,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89681074] [2022-11-25 17:13:14,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:13:14,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:13:14,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:13:14,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:13:14,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:13:14,608 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 209 [2022-11-25 17:13:14,609 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 20 transitions, 77 flow. Second operand has 5 states, 5 states have (on average 92.2) internal successors, (461), 5 states have internal predecessors, (461), 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 17:13:14,609 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:13:14,609 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 209 [2022-11-25 17:13:14,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:13:15,033 INFO L130 PetriNetUnfolder]: 36/114 cut-off events. [2022-11-25 17:13:15,034 INFO L131 PetriNetUnfolder]: For 67/67 co-relation queries the response was YES. [2022-11-25 17:13:15,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 114 events. 36/114 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 392 event pairs, 4 based on Foata normal form. 1/115 useless extension candidates. Maximal degree in co-relation 318. Up to 62 conditions per place. [2022-11-25 17:13:15,035 INFO L137 encePairwiseOnDemand]: 204/209 looper letters, 28 selfloop transitions, 5 changer transitions 10/43 dead transitions. [2022-11-25 17:13:15,035 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 43 transitions, 227 flow [2022-11-25 17:13:15,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:13:15,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:13:15,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 578 transitions. [2022-11-25 17:13:15,039 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4609250398724083 [2022-11-25 17:13:15,039 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 578 transitions. [2022-11-25 17:13:15,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 578 transitions. [2022-11-25 17:13:15,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:13:15,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 578 transitions. [2022-11-25 17:13:15,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 96.33333333333333) internal successors, (578), 6 states have internal predecessors, (578), 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 17:13:15,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 209.0) internal successors, (1463), 7 states have internal predecessors, (1463), 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 17:13:15,044 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 209.0) internal successors, (1463), 7 states have internal predecessors, (1463), 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 17:13:15,044 INFO L175 Difference]: Start difference. First operand has 35 places, 20 transitions, 77 flow. Second operand 6 states and 578 transitions. [2022-11-25 17:13:15,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 43 transitions, 227 flow [2022-11-25 17:13:15,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 43 transitions, 223 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-11-25 17:13:15,046 INFO L231 Difference]: Finished difference. Result has 41 places, 20 transitions, 95 flow [2022-11-25 17:13:15,047 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=95, PETRI_PLACES=41, PETRI_TRANSITIONS=20} [2022-11-25 17:13:15,047 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2022-11-25 17:13:15,048 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 20 transitions, 95 flow [2022-11-25 17:13:15,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 92.2) internal successors, (461), 5 states have internal predecessors, (461), 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 17:13:15,048 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:13:15,048 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:13:15,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 17:13:15,049 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 17:13:15,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:13:15,049 INFO L85 PathProgramCache]: Analyzing trace with hash -227442242, now seen corresponding path program 3 times [2022-11-25 17:13:15,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:13:15,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829400639] [2022-11-25 17:13:15,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:13:15,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:13:15,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:16,170 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 17:13:16,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:13:16,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829400639] [2022-11-25 17:13:16,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829400639] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:13:16,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:13:16,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:13:16,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973082835] [2022-11-25 17:13:16,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:13:16,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:13:16,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:13:16,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:13:16,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:13:16,241 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 209 [2022-11-25 17:13:16,242 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 20 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 92.2) internal successors, (461), 5 states have internal predecessors, (461), 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 17:13:16,242 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:13:16,242 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 209 [2022-11-25 17:13:16,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:13:16,855 INFO L130 PetriNetUnfolder]: 20/70 cut-off events. [2022-11-25 17:13:16,855 INFO L131 PetriNetUnfolder]: For 105/105 co-relation queries the response was YES. [2022-11-25 17:13:16,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 70 events. 20/70 cut-off events. For 105/105 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 188 event pairs, 0 based on Foata normal form. 1/71 useless extension candidates. Maximal degree in co-relation 229. Up to 23 conditions per place. [2022-11-25 17:13:16,856 INFO L137 encePairwiseOnDemand]: 204/209 looper letters, 27 selfloop transitions, 6 changer transitions 9/42 dead transitions. [2022-11-25 17:13:16,856 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 42 transitions, 239 flow [2022-11-25 17:13:16,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:13:16,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:13:16,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 576 transitions. [2022-11-25 17:13:16,861 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45933014354066987 [2022-11-25 17:13:16,861 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 576 transitions. [2022-11-25 17:13:16,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 576 transitions. [2022-11-25 17:13:16,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:13:16,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 576 transitions. [2022-11-25 17:13:16,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 96.0) internal successors, (576), 6 states have internal predecessors, (576), 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 17:13:16,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 209.0) internal successors, (1463), 7 states have internal predecessors, (1463), 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 17:13:16,866 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 209.0) internal successors, (1463), 7 states have internal predecessors, (1463), 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 17:13:16,866 INFO L175 Difference]: Start difference. First operand has 41 places, 20 transitions, 95 flow. Second operand 6 states and 576 transitions. [2022-11-25 17:13:16,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 42 transitions, 239 flow [2022-11-25 17:13:16,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 42 transitions, 217 flow, removed 6 selfloop flow, removed 5 redundant places. [2022-11-25 17:13:16,870 INFO L231 Difference]: Finished difference. Result has 42 places, 20 transitions, 97 flow [2022-11-25 17:13:16,872 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=97, PETRI_PLACES=42, PETRI_TRANSITIONS=20} [2022-11-25 17:13:16,872 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 3 predicate places. [2022-11-25 17:13:16,873 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 20 transitions, 97 flow [2022-11-25 17:13:16,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 92.2) internal successors, (461), 5 states have internal predecessors, (461), 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 17:13:16,873 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:13:16,873 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:13:16,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 17:13:16,874 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 17:13:16,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:13:16,874 INFO L85 PathProgramCache]: Analyzing trace with hash -785273694, now seen corresponding path program 4 times [2022-11-25 17:13:16,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:13:16,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919212128] [2022-11-25 17:13:16,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:13:16,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:13:16,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:18,041 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 17:13:18,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:13:18,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919212128] [2022-11-25 17:13:18,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919212128] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:13:18,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:13:18,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:13:18,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872264928] [2022-11-25 17:13:18,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:13:18,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:13:18,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:13:18,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:13:18,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:13:18,115 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 209 [2022-11-25 17:13:18,116 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 20 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 92.2) internal successors, (461), 5 states have internal predecessors, (461), 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 17:13:18,116 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:13:18,116 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 209 [2022-11-25 17:13:18,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:13:18,725 INFO L130 PetriNetUnfolder]: 15/67 cut-off events. [2022-11-25 17:13:18,725 INFO L131 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2022-11-25 17:13:18,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 67 events. 15/67 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 175 event pairs, 0 based on Foata normal form. 1/68 useless extension candidates. Maximal degree in co-relation 221. Up to 41 conditions per place. [2022-11-25 17:13:18,726 INFO L137 encePairwiseOnDemand]: 204/209 looper letters, 18 selfloop transitions, 4 changer transitions 12/34 dead transitions. [2022-11-25 17:13:18,726 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 34 transitions, 205 flow [2022-11-25 17:13:18,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:13:18,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:13:18,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 568 transitions. [2022-11-25 17:13:18,729 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4529505582137161 [2022-11-25 17:13:18,730 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 568 transitions. [2022-11-25 17:13:18,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 568 transitions. [2022-11-25 17:13:18,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:13:18,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 568 transitions. [2022-11-25 17:13:18,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.66666666666667) internal successors, (568), 6 states have internal predecessors, (568), 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 17:13:18,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 209.0) internal successors, (1463), 7 states have internal predecessors, (1463), 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 17:13:18,735 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 209.0) internal successors, (1463), 7 states have internal predecessors, (1463), 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 17:13:18,735 INFO L175 Difference]: Start difference. First operand has 42 places, 20 transitions, 97 flow. Second operand 6 states and 568 transitions. [2022-11-25 17:13:18,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 34 transitions, 205 flow [2022-11-25 17:13:18,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 34 transitions, 200 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-11-25 17:13:18,739 INFO L231 Difference]: Finished difference. Result has 45 places, 18 transitions, 91 flow [2022-11-25 17:13:18,740 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=91, PETRI_PLACES=45, PETRI_TRANSITIONS=18} [2022-11-25 17:13:18,740 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 6 predicate places. [2022-11-25 17:13:18,740 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 18 transitions, 91 flow [2022-11-25 17:13:18,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 92.2) internal successors, (461), 5 states have internal predecessors, (461), 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 17:13:18,742 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:13:18,742 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:13:18,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 17:13:18,743 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 17:13:18,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:13:18,743 INFO L85 PathProgramCache]: Analyzing trace with hash -958521386, now seen corresponding path program 5 times [2022-11-25 17:13:18,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:13:18,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263096684] [2022-11-25 17:13:18,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:13:18,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:13:18,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:19,805 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 17:13:19,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:13:19,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263096684] [2022-11-25 17:13:19,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263096684] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:13:19,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:13:19,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:13:19,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828975371] [2022-11-25 17:13:19,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:13:19,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:13:19,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:13:19,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:13:19,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:13:19,865 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 209 [2022-11-25 17:13:19,866 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 18 transitions, 91 flow. Second operand has 5 states, 5 states have (on average 92.2) internal successors, (461), 5 states have internal predecessors, (461), 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 17:13:19,866 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:13:19,866 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 209 [2022-11-25 17:13:19,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:13:20,302 INFO L130 PetriNetUnfolder]: 7/37 cut-off events. [2022-11-25 17:13:20,302 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2022-11-25 17:13:20,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 37 events. 7/37 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 51 event pairs, 0 based on Foata normal form. 1/38 useless extension candidates. Maximal degree in co-relation 128. Up to 14 conditions per place. [2022-11-25 17:13:20,303 INFO L137 encePairwiseOnDemand]: 204/209 looper letters, 17 selfloop transitions, 3 changer transitions 8/28 dead transitions. [2022-11-25 17:13:20,303 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 28 transitions, 171 flow [2022-11-25 17:13:20,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:13:20,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:13:20,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 562 transitions. [2022-11-25 17:13:20,308 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4481658692185008 [2022-11-25 17:13:20,308 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 562 transitions. [2022-11-25 17:13:20,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 562 transitions. [2022-11-25 17:13:20,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:13:20,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 562 transitions. [2022-11-25 17:13:20,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 93.66666666666667) internal successors, (562), 6 states have internal predecessors, (562), 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 17:13:20,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 209.0) internal successors, (1463), 7 states have internal predecessors, (1463), 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 17:13:20,314 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 209.0) internal successors, (1463), 7 states have internal predecessors, (1463), 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 17:13:20,314 INFO L175 Difference]: Start difference. First operand has 45 places, 18 transitions, 91 flow. Second operand 6 states and 562 transitions. [2022-11-25 17:13:20,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 28 transitions, 171 flow [2022-11-25 17:13:20,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 28 transitions, 152 flow, removed 2 selfloop flow, removed 8 redundant places. [2022-11-25 17:13:20,317 INFO L231 Difference]: Finished difference. Result has 41 places, 16 transitions, 65 flow [2022-11-25 17:13:20,318 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=65, PETRI_PLACES=41, PETRI_TRANSITIONS=16} [2022-11-25 17:13:20,320 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2022-11-25 17:13:20,320 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 16 transitions, 65 flow [2022-11-25 17:13:20,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 92.2) internal successors, (461), 5 states have internal predecessors, (461), 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 17:13:20,321 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:13:20,321 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:13:20,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 17:13:20,322 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 17:13:20,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:13:20,323 INFO L85 PathProgramCache]: Analyzing trace with hash 2079826310, now seen corresponding path program 6 times [2022-11-25 17:13:20,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:13:20,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791533028] [2022-11-25 17:13:20,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:13:20,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:13:20,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:21,349 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 17:13:21,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:13:21,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791533028] [2022-11-25 17:13:21,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791533028] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:13:21,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:13:21,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:13:21,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176248666] [2022-11-25 17:13:21,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:13:21,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:13:21,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:13:21,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:13:21,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:13:21,428 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 209 [2022-11-25 17:13:21,429 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 16 transitions, 65 flow. Second operand has 5 states, 5 states have (on average 92.2) internal successors, (461), 5 states have internal predecessors, (461), 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 17:13:21,429 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:13:21,429 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 209 [2022-11-25 17:13:21,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:13:21,899 INFO L130 PetriNetUnfolder]: 5/25 cut-off events. [2022-11-25 17:13:21,899 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-11-25 17:13:21,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 25 events. 5/25 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs, 0 based on Foata normal form. 1/26 useless extension candidates. Maximal degree in co-relation 86. Up to 10 conditions per place. [2022-11-25 17:13:21,899 INFO L137 encePairwiseOnDemand]: 204/209 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2022-11-25 17:13:21,900 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 20 transitions, 112 flow [2022-11-25 17:13:21,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:13:21,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:13:21,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 555 transitions. [2022-11-25 17:13:21,903 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44258373205741625 [2022-11-25 17:13:21,903 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 555 transitions. [2022-11-25 17:13:21,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 555 transitions. [2022-11-25 17:13:21,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:13:21,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 555 transitions. [2022-11-25 17:13:21,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 92.5) internal successors, (555), 6 states have internal predecessors, (555), 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 17:13:21,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 209.0) internal successors, (1463), 7 states have internal predecessors, (1463), 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 17:13:21,908 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 209.0) internal successors, (1463), 7 states have internal predecessors, (1463), 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 17:13:21,908 INFO L175 Difference]: Start difference. First operand has 41 places, 16 transitions, 65 flow. Second operand 6 states and 555 transitions. [2022-11-25 17:13:21,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 20 transitions, 112 flow [2022-11-25 17:13:21,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 20 transitions, 99 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-11-25 17:13:21,909 INFO L231 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2022-11-25 17:13:21,909 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=37, PETRI_TRANSITIONS=0} [2022-11-25 17:13:21,910 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, -2 predicate places. [2022-11-25 17:13:21,910 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 0 transitions, 0 flow [2022-11-25 17:13:21,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 92.2) internal successors, (461), 5 states have internal predecessors, (461), 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 17:13:21,913 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 17 remaining) [2022-11-25 17:13:21,913 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 17 remaining) [2022-11-25 17:13:21,914 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 17 remaining) [2022-11-25 17:13:21,914 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 17 remaining) [2022-11-25 17:13:21,914 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 17 remaining) [2022-11-25 17:13:21,914 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 17 remaining) [2022-11-25 17:13:21,915 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 17 remaining) [2022-11-25 17:13:21,915 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 17 remaining) [2022-11-25 17:13:21,915 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 17 remaining) [2022-11-25 17:13:21,915 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 17 remaining) [2022-11-25 17:13:21,915 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 17 remaining) [2022-11-25 17:13:21,916 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 17 remaining) [2022-11-25 17:13:21,916 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (4 of 17 remaining) [2022-11-25 17:13:21,916 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK (3 of 17 remaining) [2022-11-25 17:13:21,916 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 17 remaining) [2022-11-25 17:13:21,916 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 17 remaining) [2022-11-25 17:13:21,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 17 remaining) [2022-11-25 17:13:21,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 17:13:21,917 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:13:21,921 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-25 17:13:21,921 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 17:13:21,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 05:13:21 BasicIcfg [2022-11-25 17:13:21,924 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 17:13:21,925 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 17:13:21,925 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 17:13:21,925 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 17:13:21,925 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:13:03" (3/4) ... [2022-11-25 17:13:21,928 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 17:13:21,935 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-25 17:13:21,935 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-25 17:13:21,935 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-25 17:13:21,940 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2022-11-25 17:13:21,940 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-25 17:13:21,940 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-25 17:13:21,941 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 17:13:21,978 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16616267-969c-4e76-aafa-c75f7469d8db/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 17:13:21,978 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 17:13:21,979 INFO L158 Benchmark]: Toolchain (without parser) took 19343.85ms. Allocated memory was 172.0MB in the beginning and 367.0MB in the end (delta: 195.0MB). Free memory was 142.1MB in the beginning and 315.4MB in the end (delta: -173.3MB). Peak memory consumption was 24.9MB. Max. memory is 16.1GB. [2022-11-25 17:13:21,979 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 115.3MB. Free memory was 68.9MB in the beginning and 68.7MB in the end (delta: 188.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:13:21,980 INFO L158 Benchmark]: CACSL2BoogieTranslator took 412.77ms. Allocated memory is still 172.0MB. Free memory was 141.4MB in the beginning and 130.2MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 17:13:21,980 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.63ms. Allocated memory is still 172.0MB. Free memory was 130.2MB in the beginning and 128.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:13:21,980 INFO L158 Benchmark]: Boogie Preprocessor took 44.64ms. Allocated memory is still 172.0MB. Free memory was 128.8MB in the beginning and 127.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:13:21,981 INFO L158 Benchmark]: RCFGBuilder took 571.44ms. Allocated memory is still 172.0MB. Free memory was 127.4MB in the beginning and 112.0MB in the end (delta: 15.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-25 17:13:21,981 INFO L158 Benchmark]: TraceAbstraction took 18183.92ms. Allocated memory was 172.0MB in the beginning and 367.0MB in the end (delta: 195.0MB). Free memory was 111.3MB in the beginning and 318.6MB in the end (delta: -207.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:13:21,982 INFO L158 Benchmark]: Witness Printer took 54.05ms. Allocated memory is still 367.0MB. Free memory was 318.6MB in the beginning and 315.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 17:13:21,983 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 115.3MB. Free memory was 68.9MB in the beginning and 68.7MB in the end (delta: 188.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 412.77ms. Allocated memory is still 172.0MB. Free memory was 141.4MB in the beginning and 130.2MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.63ms. Allocated memory is still 172.0MB. Free memory was 130.2MB in the beginning and 128.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.64ms. Allocated memory is still 172.0MB. Free memory was 128.8MB in the beginning and 127.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 571.44ms. Allocated memory is still 172.0MB. Free memory was 127.4MB in the beginning and 112.0MB in the end (delta: 15.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 18183.92ms. Allocated memory was 172.0MB in the beginning and 367.0MB in the end (delta: 195.0MB). Free memory was 111.3MB in the beginning and 318.6MB in the end (delta: -207.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 54.05ms. Allocated memory is still 367.0MB. Free memory was 318.6MB in the beginning and 315.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.5s, 110 PlacesBefore, 39 PlacesAfterwards, 102 TransitionsBefore, 29 TransitionsAfterwards, 378 CoEnabledTransitionPairs, 7 FixpointIterations, 63 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 99 TotalNumberOfCompositions, 608 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 608, independent: 608, independent conditional: 0, independent unconditional: 608, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 265, independent: 265, independent conditional: 0, independent unconditional: 265, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 265, independent: 265, independent conditional: 0, independent unconditional: 265, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 608, independent: 343, independent conditional: 0, independent unconditional: 343, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 265, unknown conditional: 0, unknown unconditional: 265] , Statistics on independence cache: Total cache size (in pairs): 48, Positive cache size: 48, Positive conditional cache size: 0, Positive unconditional cache size: 48, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 77]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 59]: 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 7 procedures, 124 locations, 17 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: 18.0s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 4.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 857 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 528 mSDsluCounter, 91 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 43 mSDsCounter, 65 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1117 IncrementalHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 65 mSolverCounterUnsat, 48 mSDtfsCounter, 1117 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=97occurred in iteration=10, InterpolantAutomatonStates: 56, 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, 0.4s SatisfiabilityAnalysisTime, 8.1s InterpolantComputationTime, 127 NumberOfCodeBlocks, 127 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 3172 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-25 17:13:22,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16616267-969c-4e76-aafa-c75f7469d8db/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE