./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/clever.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/clever.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8 --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 93a2fdd4bcf1d0c2ab8b4e49feeb28ec4b1782148939310f1cb0ffe97948195e --- 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-2329fc7 [2022-12-13 15:23:48,818 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 15:23:48,819 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 15:23:48,831 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 15:23:48,832 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 15:23:48,832 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 15:23:48,833 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 15:23:48,834 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 15:23:48,835 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 15:23:48,836 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 15:23:48,836 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 15:23:48,837 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 15:23:48,837 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 15:23:48,838 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 15:23:48,839 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 15:23:48,839 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 15:23:48,840 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 15:23:48,840 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 15:23:48,841 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 15:23:48,842 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 15:23:48,843 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 15:23:48,844 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 15:23:48,845 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 15:23:48,846 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 15:23:48,847 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 15:23:48,848 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 15:23:48,848 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 15:23:48,849 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 15:23:48,849 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 15:23:48,850 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 15:23:48,850 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 15:23:48,850 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 15:23:48,851 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 15:23:48,851 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 15:23:48,852 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 15:23:48,852 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 15:23:48,853 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 15:23:48,853 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 15:23:48,853 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 15:23:48,854 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 15:23:48,854 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 15:23:48,855 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 15:23:48,875 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 15:23:48,875 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 15:23:48,875 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 15:23:48,875 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 15:23:48,876 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 15:23:48,876 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 15:23:48,877 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 15:23:48,877 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 15:23:48,877 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 15:23:48,877 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 15:23:48,877 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 15:23:48,877 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 15:23:48,877 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 15:23:48,878 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 15:23:48,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 15:23:48,878 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 15:23:48,878 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 15:23:48,878 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 15:23:48,878 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 15:23:48,878 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 15:23:48,878 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 15:23:48,878 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 15:23:48,879 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 15:23:48,879 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 15:23:48,879 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 15:23:48,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:23:48,879 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 15:23:48,879 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 15:23:48,879 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 15:23:48,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 15:23:48,879 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 15:23:48,880 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 15:23:48,880 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 15:23:48,880 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 15:23:48,880 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_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93a2fdd4bcf1d0c2ab8b4e49feeb28ec4b1782148939310f1cb0ffe97948195e [2022-12-13 15:23:49,071 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 15:23:49,091 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 15:23:49,093 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 15:23:49,095 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 15:23:49,095 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 15:23:49,096 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/clever.wvr.c [2022-12-13 15:23:51,659 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 15:23:51,812 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 15:23:51,812 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/sv-benchmarks/c/weaver/clever.wvr.c [2022-12-13 15:23:51,817 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/data/4dd04eacb/08cddba9b01744c987c68dc8cd226373/FLAG9a522b278 [2022-12-13 15:23:52,229 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/data/4dd04eacb/08cddba9b01744c987c68dc8cd226373 [2022-12-13 15:23:52,231 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 15:23:52,232 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 15:23:52,233 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 15:23:52,233 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 15:23:52,237 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 15:23:52,238 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:23:52" (1/1) ... [2022-12-13 15:23:52,239 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@799c7864 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:23:52, skipping insertion in model container [2022-12-13 15:23:52,239 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:23:52" (1/1) ... [2022-12-13 15:23:52,246 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 15:23:52,264 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 15:23:52,376 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_81c29998-3d46-4005-8d6b-966c18ea0485/sv-benchmarks/c/weaver/clever.wvr.c[2133,2146] [2022-12-13 15:23:52,380 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:23:52,387 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 15:23:52,401 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_81c29998-3d46-4005-8d6b-966c18ea0485/sv-benchmarks/c/weaver/clever.wvr.c[2133,2146] [2022-12-13 15:23:52,402 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:23:52,412 INFO L208 MainTranslator]: Completed translation [2022-12-13 15:23:52,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:23:52 WrapperNode [2022-12-13 15:23:52,413 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 15:23:52,413 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 15:23:52,413 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 15:23:52,413 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 15:23:52,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:23:52" (1/1) ... [2022-12-13 15:23:52,424 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:23:52" (1/1) ... [2022-12-13 15:23:52,437 INFO L138 Inliner]: procedures = 19, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 78 [2022-12-13 15:23:52,437 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 15:23:52,438 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 15:23:52,438 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 15:23:52,438 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 15:23:52,445 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:23:52" (1/1) ... [2022-12-13 15:23:52,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:23:52" (1/1) ... [2022-12-13 15:23:52,446 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:23:52" (1/1) ... [2022-12-13 15:23:52,446 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:23:52" (1/1) ... [2022-12-13 15:23:52,449 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:23:52" (1/1) ... [2022-12-13 15:23:52,452 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:23:52" (1/1) ... [2022-12-13 15:23:52,453 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:23:52" (1/1) ... [2022-12-13 15:23:52,454 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:23:52" (1/1) ... [2022-12-13 15:23:52,455 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 15:23:52,456 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 15:23:52,456 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 15:23:52,456 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 15:23:52,456 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:23:52" (1/1) ... [2022-12-13 15:23:52,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:23:52,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:23:52,480 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 15:23:52,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 15:23:52,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 15:23:52,511 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 15:23:52,511 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 15:23:52,511 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 15:23:52,511 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 15:23:52,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 15:23:52,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 15:23:52,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 15:23:52,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 15:23:52,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 15:23:52,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 15:23:52,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 15:23:52,513 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 15:23:52,587 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 15:23:52,588 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 15:23:52,786 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 15:23:52,794 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 15:23:52,794 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-13 15:23:52,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:23:52 BoogieIcfgContainer [2022-12-13 15:23:52,797 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 15:23:52,800 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 15:23:52,800 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 15:23:52,803 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 15:23:52,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 03:23:52" (1/3) ... [2022-12-13 15:23:52,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4602dd7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:23:52, skipping insertion in model container [2022-12-13 15:23:52,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:23:52" (2/3) ... [2022-12-13 15:23:52,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4602dd7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:23:52, skipping insertion in model container [2022-12-13 15:23:52,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:23:52" (3/3) ... [2022-12-13 15:23:52,806 INFO L112 eAbstractionObserver]: Analyzing ICFG clever.wvr.c [2022-12-13 15:23:52,824 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 15:23:52,824 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-12-13 15:23:52,824 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 15:23:52,888 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 15:23:52,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 133 transitions, 282 flow [2022-12-13 15:23:52,983 INFO L130 PetriNetUnfolder]: 9/131 cut-off events. [2022-12-13 15:23:52,983 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 15:23:52,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 131 events. 9/131 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 109 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 90. Up to 2 conditions per place. [2022-12-13 15:23:52,989 INFO L82 GeneralOperation]: Start removeDead. Operand has 131 places, 133 transitions, 282 flow [2022-12-13 15:23:52,994 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 124 places, 126 transitions, 264 flow [2022-12-13 15:23:52,998 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 15:23:53,009 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 124 places, 126 transitions, 264 flow [2022-12-13 15:23:53,012 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 124 places, 126 transitions, 264 flow [2022-12-13 15:23:53,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 124 places, 126 transitions, 264 flow [2022-12-13 15:23:53,047 INFO L130 PetriNetUnfolder]: 9/126 cut-off events. [2022-12-13 15:23:53,048 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 15:23:53,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 126 events. 9/126 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 108 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 90. Up to 2 conditions per place. [2022-12-13 15:23:53,050 INFO L119 LiptonReduction]: Number of co-enabled transitions 972 [2022-12-13 15:23:55,931 INFO L134 LiptonReduction]: Checked pairs total: 991 [2022-12-13 15:23:55,931 INFO L136 LiptonReduction]: Total number of compositions: 128 [2022-12-13 15:23:55,941 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:23:55,946 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;@1eafaeb0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:23:55,946 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-12-13 15:23:55,947 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2022-12-13 15:23:55,947 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:23:55,947 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:23:55,948 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 15:23:55,948 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:23:55,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:23:55,951 INFO L85 PathProgramCache]: Analyzing trace with hash 492, now seen corresponding path program 1 times [2022-12-13 15:23:55,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:23:55,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018993951] [2022-12-13 15:23:55,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:23:55,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:23:56,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:23:56,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:23:56,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:23:56,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018993951] [2022-12-13 15:23:56,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018993951] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:23:56,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:23:56,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 15:23:56,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148559027] [2022-12-13 15:23:56,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:23:56,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 15:23:56,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:23:56,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 15:23:56,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 15:23:56,050 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 261 [2022-12-13 15:23:56,051 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 24 transitions, 60 flow. Second operand has 2 states, 2 states have (on average 122.5) internal successors, (245), 2 states have internal predecessors, (245), 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) [2022-12-13 15:23:56,051 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:23:56,051 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 261 [2022-12-13 15:23:56,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:23:56,092 INFO L130 PetriNetUnfolder]: 75/122 cut-off events. [2022-12-13 15:23:56,093 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 15:23:56,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 122 events. 75/122 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 256 event pairs, 35 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 210. Up to 123 conditions per place. [2022-12-13 15:23:56,095 INFO L137 encePairwiseOnDemand]: 258/261 looper letters, 21 selfloop transitions, 0 changer transitions 0/21 dead transitions. [2022-12-13 15:23:56,095 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 21 transitions, 96 flow [2022-12-13 15:23:56,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 15:23:56,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 15:23:56,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 268 transitions. [2022-12-13 15:23:56,104 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5134099616858238 [2022-12-13 15:23:56,105 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 268 transitions. [2022-12-13 15:23:56,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 268 transitions. [2022-12-13 15:23:56,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:23:56,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 268 transitions. [2022-12-13 15:23:56,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 134.0) internal successors, (268), 2 states have internal predecessors, (268), 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) [2022-12-13 15:23:56,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 261.0) internal successors, (783), 3 states have internal predecessors, (783), 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) [2022-12-13 15:23:56,114 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 261.0) internal successors, (783), 3 states have internal predecessors, (783), 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) [2022-12-13 15:23:56,115 INFO L175 Difference]: Start difference. First operand has 28 places, 24 transitions, 60 flow. Second operand 2 states and 268 transitions. [2022-12-13 15:23:56,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 21 transitions, 96 flow [2022-12-13 15:23:56,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 21 transitions, 88 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 15:23:56,118 INFO L231 Difference]: Finished difference. Result has 22 places, 21 transitions, 46 flow [2022-12-13 15:23:56,120 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=261, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=46, PETRI_PLACES=22, PETRI_TRANSITIONS=21} [2022-12-13 15:23:56,122 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, -6 predicate places. [2022-12-13 15:23:56,123 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 21 transitions, 46 flow [2022-12-13 15:23:56,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 122.5) internal successors, (245), 2 states have internal predecessors, (245), 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) [2022-12-13 15:23:56,123 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:23:56,123 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 15:23:56,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 15:23:56,123 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:23:56,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:23:56,124 INFO L85 PathProgramCache]: Analyzing trace with hash 481583, now seen corresponding path program 1 times [2022-12-13 15:23:56,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:23:56,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175933003] [2022-12-13 15:23:56,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:23:56,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:23:56,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:23:56,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:23:56,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:23:56,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175933003] [2022-12-13 15:23:56,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175933003] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:23:56,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:23:56,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 15:23:56,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872426685] [2022-12-13 15:23:56,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:23:56,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:23:56,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:23:56,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:23:56,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:23:56,303 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 261 [2022-12-13 15:23:56,304 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 21 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 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) [2022-12-13 15:23:56,304 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:23:56,304 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 261 [2022-12-13 15:23:56,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:23:56,338 INFO L130 PetriNetUnfolder]: 69/111 cut-off events. [2022-12-13 15:23:56,339 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:23:56,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229 conditions, 111 events. 69/111 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 224 event pairs, 32 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 226. Up to 111 conditions per place. [2022-12-13 15:23:56,340 INFO L137 encePairwiseOnDemand]: 258/261 looper letters, 18 selfloop transitions, 1 changer transitions 0/19 dead transitions. [2022-12-13 15:23:56,340 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 19 transitions, 80 flow [2022-12-13 15:23:56,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:23:56,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:23:56,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 372 transitions. [2022-12-13 15:23:56,343 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47509578544061304 [2022-12-13 15:23:56,343 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 372 transitions. [2022-12-13 15:23:56,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 372 transitions. [2022-12-13 15:23:56,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:23:56,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 372 transitions. [2022-12-13 15:23:56,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 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) [2022-12-13 15:23:56,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 261.0) internal successors, (1044), 4 states have internal predecessors, (1044), 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) [2022-12-13 15:23:56,346 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 261.0) internal successors, (1044), 4 states have internal predecessors, (1044), 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) [2022-12-13 15:23:56,346 INFO L175 Difference]: Start difference. First operand has 22 places, 21 transitions, 46 flow. Second operand 3 states and 372 transitions. [2022-12-13 15:23:56,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 19 transitions, 80 flow [2022-12-13 15:23:56,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 19 transitions, 80 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 15:23:56,347 INFO L231 Difference]: Finished difference. Result has 22 places, 19 transitions, 44 flow [2022-12-13 15:23:56,347 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=261, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=44, PETRI_PLACES=22, PETRI_TRANSITIONS=19} [2022-12-13 15:23:56,347 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, -6 predicate places. [2022-12-13 15:23:56,347 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 19 transitions, 44 flow [2022-12-13 15:23:56,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 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) [2022-12-13 15:23:56,348 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:23:56,348 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 15:23:56,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 15:23:56,348 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:23:56,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:23:56,348 INFO L85 PathProgramCache]: Analyzing trace with hash 481581, now seen corresponding path program 1 times [2022-12-13 15:23:56,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:23:56,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249709887] [2022-12-13 15:23:56,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:23:56,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:23:56,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:23:56,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:23:56,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:23:56,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249709887] [2022-12-13 15:23:56,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249709887] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:23:56,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:23:56,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 15:23:56,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470924659] [2022-12-13 15:23:56,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:23:56,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:23:56,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:23:56,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:23:56,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:23:56,428 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 261 [2022-12-13 15:23:56,429 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 19 transitions, 44 flow. Second operand has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 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) [2022-12-13 15:23:56,429 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:23:56,429 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 261 [2022-12-13 15:23:56,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:23:56,459 INFO L130 PetriNetUnfolder]: 63/100 cut-off events. [2022-12-13 15:23:56,460 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:23:56,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 100 events. 63/100 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 196 event pairs, 29 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 205. Up to 100 conditions per place. [2022-12-13 15:23:56,461 INFO L137 encePairwiseOnDemand]: 258/261 looper letters, 16 selfloop transitions, 1 changer transitions 0/17 dead transitions. [2022-12-13 15:23:56,461 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 17 transitions, 74 flow [2022-12-13 15:23:56,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:23:56,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:23:56,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 358 transitions. [2022-12-13 15:23:56,464 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45721583652618136 [2022-12-13 15:23:56,464 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 358 transitions. [2022-12-13 15:23:56,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 358 transitions. [2022-12-13 15:23:56,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:23:56,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 358 transitions. [2022-12-13 15:23:56,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 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) [2022-12-13 15:23:56,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 261.0) internal successors, (1044), 4 states have internal predecessors, (1044), 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) [2022-12-13 15:23:56,470 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 261.0) internal successors, (1044), 4 states have internal predecessors, (1044), 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) [2022-12-13 15:23:56,470 INFO L175 Difference]: Start difference. First operand has 22 places, 19 transitions, 44 flow. Second operand 3 states and 358 transitions. [2022-12-13 15:23:56,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 17 transitions, 74 flow [2022-12-13 15:23:56,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 17 transitions, 73 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 15:23:56,471 INFO L231 Difference]: Finished difference. Result has 21 places, 17 transitions, 41 flow [2022-12-13 15:23:56,471 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=261, PETRI_DIFFERENCE_MINUEND_FLOW=39, PETRI_DIFFERENCE_MINUEND_PLACES=19, 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=41, PETRI_PLACES=21, PETRI_TRANSITIONS=17} [2022-12-13 15:23:56,471 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, -7 predicate places. [2022-12-13 15:23:56,471 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 17 transitions, 41 flow [2022-12-13 15:23:56,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 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) [2022-12-13 15:23:56,472 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:23:56,472 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 15:23:56,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 15:23:56,472 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:23:56,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:23:56,472 INFO L85 PathProgramCache]: Analyzing trace with hash 462810918, now seen corresponding path program 1 times [2022-12-13 15:23:56,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:23:56,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331393721] [2022-12-13 15:23:56,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:23:56,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:23:56,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:23:56,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:23:56,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:23:56,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331393721] [2022-12-13 15:23:56,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331393721] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:23:56,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:23:56,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:23:56,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303394774] [2022-12-13 15:23:56,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:23:56,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 15:23:56,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:23:56,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 15:23:56,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 15:23:56,635 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 261 [2022-12-13 15:23:56,636 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 17 transitions, 41 flow. Second operand has 4 states, 4 states have (on average 116.25) internal successors, (465), 4 states have internal predecessors, (465), 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) [2022-12-13 15:23:56,636 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:23:56,636 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 261 [2022-12-13 15:23:56,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:23:56,666 INFO L130 PetriNetUnfolder]: 49/80 cut-off events. [2022-12-13 15:23:56,666 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:23:56,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 80 events. 49/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 138 event pairs, 22 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 166. Up to 80 conditions per place. [2022-12-13 15:23:56,667 INFO L137 encePairwiseOnDemand]: 259/261 looper letters, 15 selfloop transitions, 1 changer transitions 0/16 dead transitions. [2022-12-13 15:23:56,667 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 16 transitions, 71 flow [2022-12-13 15:23:56,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:23:56,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:23:56,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 362 transitions. [2022-12-13 15:23:56,669 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4623243933588761 [2022-12-13 15:23:56,670 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 362 transitions. [2022-12-13 15:23:56,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 362 transitions. [2022-12-13 15:23:56,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:23:56,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 362 transitions. [2022-12-13 15:23:56,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 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) [2022-12-13 15:23:56,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 261.0) internal successors, (1044), 4 states have internal predecessors, (1044), 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) [2022-12-13 15:23:56,674 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 261.0) internal successors, (1044), 4 states have internal predecessors, (1044), 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) [2022-12-13 15:23:56,674 INFO L175 Difference]: Start difference. First operand has 21 places, 17 transitions, 41 flow. Second operand 3 states and 362 transitions. [2022-12-13 15:23:56,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 16 transitions, 71 flow [2022-12-13 15:23:56,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 16 transitions, 70 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 15:23:56,675 INFO L231 Difference]: Finished difference. Result has 21 places, 16 transitions, 40 flow [2022-12-13 15:23:56,675 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=261, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=19, 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=40, PETRI_PLACES=21, PETRI_TRANSITIONS=16} [2022-12-13 15:23:56,675 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, -7 predicate places. [2022-12-13 15:23:56,675 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 16 transitions, 40 flow [2022-12-13 15:23:56,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 116.25) internal successors, (465), 4 states have internal predecessors, (465), 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) [2022-12-13 15:23:56,676 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:23:56,676 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 15:23:56,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 15:23:56,676 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:23:56,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:23:56,676 INFO L85 PathProgramCache]: Analyzing trace with hash 462810917, now seen corresponding path program 1 times [2022-12-13 15:23:56,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:23:56,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613506513] [2022-12-13 15:23:56,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:23:56,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:23:56,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:23:56,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:23:56,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:23:56,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613506513] [2022-12-13 15:23:56,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613506513] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:23:56,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:23:56,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:23:56,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275718739] [2022-12-13 15:23:56,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:23:56,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 15:23:56,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:23:56,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 15:23:56,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 15:23:56,769 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 261 [2022-12-13 15:23:56,770 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 16 transitions, 40 flow. Second operand has 4 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 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) [2022-12-13 15:23:56,770 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:23:56,770 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 261 [2022-12-13 15:23:56,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:23:56,795 INFO L130 PetriNetUnfolder]: 35/60 cut-off events. [2022-12-13 15:23:56,796 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:23:56,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 60 events. 35/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 85 event pairs, 15 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 127. Up to 60 conditions per place. [2022-12-13 15:23:56,796 INFO L137 encePairwiseOnDemand]: 259/261 looper letters, 14 selfloop transitions, 1 changer transitions 0/15 dead transitions. [2022-12-13 15:23:56,797 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 15 transitions, 68 flow [2022-12-13 15:23:56,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:23:56,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:23:56,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 343 transitions. [2022-12-13 15:23:56,799 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.438058748403576 [2022-12-13 15:23:56,799 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 343 transitions. [2022-12-13 15:23:56,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 343 transitions. [2022-12-13 15:23:56,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:23:56,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 343 transitions. [2022-12-13 15:23:56,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 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) [2022-12-13 15:23:56,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 261.0) internal successors, (1044), 4 states have internal predecessors, (1044), 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) [2022-12-13 15:23:56,802 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 261.0) internal successors, (1044), 4 states have internal predecessors, (1044), 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) [2022-12-13 15:23:56,802 INFO L175 Difference]: Start difference. First operand has 21 places, 16 transitions, 40 flow. Second operand 3 states and 343 transitions. [2022-12-13 15:23:56,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 15 transitions, 68 flow [2022-12-13 15:23:56,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 15 transitions, 67 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 15:23:56,803 INFO L231 Difference]: Finished difference. Result has 21 places, 15 transitions, 39 flow [2022-12-13 15:23:56,803 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=261, PETRI_DIFFERENCE_MINUEND_FLOW=37, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=39, PETRI_PLACES=21, PETRI_TRANSITIONS=15} [2022-12-13 15:23:56,804 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, -7 predicate places. [2022-12-13 15:23:56,804 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 39 flow [2022-12-13 15:23:56,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 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) [2022-12-13 15:23:56,804 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:23:56,804 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:23:56,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 15:23:56,804 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:23:56,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:23:56,805 INFO L85 PathProgramCache]: Analyzing trace with hash -946683602, now seen corresponding path program 1 times [2022-12-13 15:23:56,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:23:56,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581267011] [2022-12-13 15:23:56,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:23:56,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:23:56,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:23:56,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:23:56,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:23:56,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581267011] [2022-12-13 15:23:56,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581267011] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:23:56,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:23:56,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 15:23:56,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230360167] [2022-12-13 15:23:56,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:23:56,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:23:56,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:23:56,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:23:56,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:23:56,947 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 261 [2022-12-13 15:23:56,948 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 39 flow. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 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) [2022-12-13 15:23:56,948 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:23:56,948 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 261 [2022-12-13 15:23:56,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:23:56,995 INFO L130 PetriNetUnfolder]: 69/117 cut-off events. [2022-12-13 15:23:56,995 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 15:23:56,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 117 events. 69/117 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 279 event pairs, 15 based on Foata normal form. 1/78 useless extension candidates. Maximal degree in co-relation 245. Up to 73 conditions per place. [2022-12-13 15:23:56,996 INFO L137 encePairwiseOnDemand]: 257/261 looper letters, 23 selfloop transitions, 3 changer transitions 1/27 dead transitions. [2022-12-13 15:23:56,996 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 27 transitions, 120 flow [2022-12-13 15:23:56,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:23:56,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:23:56,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 376 transitions. [2022-12-13 15:23:56,998 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48020434227330777 [2022-12-13 15:23:56,998 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 376 transitions. [2022-12-13 15:23:56,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 376 transitions. [2022-12-13 15:23:56,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:23:56,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 376 transitions. [2022-12-13 15:23:57,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 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) [2022-12-13 15:23:57,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 261.0) internal successors, (1044), 4 states have internal predecessors, (1044), 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) [2022-12-13 15:23:57,002 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 261.0) internal successors, (1044), 4 states have internal predecessors, (1044), 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) [2022-12-13 15:23:57,002 INFO L175 Difference]: Start difference. First operand has 21 places, 15 transitions, 39 flow. Second operand 3 states and 376 transitions. [2022-12-13 15:23:57,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 27 transitions, 120 flow [2022-12-13 15:23:57,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 27 transitions, 119 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 15:23:57,003 INFO L231 Difference]: Finished difference. Result has 23 places, 17 transitions, 57 flow [2022-12-13 15:23:57,004 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=261, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=57, PETRI_PLACES=23, PETRI_TRANSITIONS=17} [2022-12-13 15:23:57,004 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, -5 predicate places. [2022-12-13 15:23:57,004 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 17 transitions, 57 flow [2022-12-13 15:23:57,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 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) [2022-12-13 15:23:57,005 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:23:57,005 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:23:57,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 15:23:57,005 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:23:57,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:23:57,006 INFO L85 PathProgramCache]: Analyzing trace with hash -142525109, now seen corresponding path program 1 times [2022-12-13 15:23:57,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:23:57,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321763780] [2022-12-13 15:23:57,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:23:57,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:23:57,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:23:57,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:23:57,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:23:57,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321763780] [2022-12-13 15:23:57,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321763780] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:23:57,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:23:57,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:23:57,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178941580] [2022-12-13 15:23:57,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:23:57,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 15:23:57,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:23:57,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 15:23:57,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 15:23:57,111 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 261 [2022-12-13 15:23:57,112 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 17 transitions, 57 flow. Second operand has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:23:57,112 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:23:57,112 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 261 [2022-12-13 15:23:57,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:23:57,184 INFO L130 PetriNetUnfolder]: 121/217 cut-off events. [2022-12-13 15:23:57,184 INFO L131 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2022-12-13 15:23:57,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 533 conditions, 217 events. 121/217 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 690 event pairs, 18 based on Foata normal form. 4/201 useless extension candidates. Maximal degree in co-relation 528. Up to 130 conditions per place. [2022-12-13 15:23:57,186 INFO L137 encePairwiseOnDemand]: 255/261 looper letters, 35 selfloop transitions, 6 changer transitions 8/49 dead transitions. [2022-12-13 15:23:57,186 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 49 transitions, 247 flow [2022-12-13 15:23:57,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 15:23:57,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 15:23:57,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 605 transitions. [2022-12-13 15:23:57,188 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46360153256704983 [2022-12-13 15:23:57,188 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 605 transitions. [2022-12-13 15:23:57,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 605 transitions. [2022-12-13 15:23:57,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:23:57,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 605 transitions. [2022-12-13 15:23:57,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 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) [2022-12-13 15:23:57,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 261.0) internal successors, (1566), 6 states have internal predecessors, (1566), 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) [2022-12-13 15:23:57,193 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 261.0) internal successors, (1566), 6 states have internal predecessors, (1566), 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) [2022-12-13 15:23:57,193 INFO L175 Difference]: Start difference. First operand has 23 places, 17 transitions, 57 flow. Second operand 5 states and 605 transitions. [2022-12-13 15:23:57,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 49 transitions, 247 flow [2022-12-13 15:23:57,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 49 transitions, 240 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 15:23:57,195 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 103 flow [2022-12-13 15:23:57,195 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=261, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=103, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2022-12-13 15:23:57,195 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, 0 predicate places. [2022-12-13 15:23:57,196 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 103 flow [2022-12-13 15:23:57,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:23:57,196 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:23:57,196 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:23:57,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 15:23:57,196 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:23:57,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:23:57,197 INFO L85 PathProgramCache]: Analyzing trace with hash 172726171, now seen corresponding path program 2 times [2022-12-13 15:23:57,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:23:57,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185451502] [2022-12-13 15:23:57,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:23:57,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:23:57,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:23:57,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:23:57,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:23:57,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185451502] [2022-12-13 15:23:57,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185451502] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:23:57,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:23:57,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:23:57,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556705172] [2022-12-13 15:23:57,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:23:57,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 15:23:57,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:23:57,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 15:23:57,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 15:23:57,292 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 261 [2022-12-13 15:23:57,292 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 103 flow. Second operand has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:23:57,292 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:23:57,292 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 261 [2022-12-13 15:23:57,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:23:57,348 INFO L130 PetriNetUnfolder]: 110/185 cut-off events. [2022-12-13 15:23:57,348 INFO L131 PetriNetUnfolder]: For 106/106 co-relation queries the response was YES. [2022-12-13 15:23:57,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 590 conditions, 185 events. 110/185 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 517 event pairs, 14 based on Foata normal form. 8/193 useless extension candidates. Maximal degree in co-relation 583. Up to 128 conditions per place. [2022-12-13 15:23:57,349 INFO L137 encePairwiseOnDemand]: 255/261 looper letters, 29 selfloop transitions, 7 changer transitions 5/41 dead transitions. [2022-12-13 15:23:57,350 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 41 transitions, 251 flow [2022-12-13 15:23:57,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 15:23:57,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 15:23:57,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 599 transitions. [2022-12-13 15:23:57,351 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4590038314176245 [2022-12-13 15:23:57,351 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 599 transitions. [2022-12-13 15:23:57,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 599 transitions. [2022-12-13 15:23:57,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:23:57,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 599 transitions. [2022-12-13 15:23:57,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 119.8) internal successors, (599), 5 states have internal predecessors, (599), 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) [2022-12-13 15:23:57,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 261.0) internal successors, (1566), 6 states have internal predecessors, (1566), 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) [2022-12-13 15:23:57,354 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 261.0) internal successors, (1566), 6 states have internal predecessors, (1566), 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) [2022-12-13 15:23:57,354 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 103 flow. Second operand 5 states and 599 transitions. [2022-12-13 15:23:57,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 41 transitions, 251 flow [2022-12-13 15:23:57,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 41 transitions, 246 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 15:23:57,355 INFO L231 Difference]: Finished difference. Result has 32 places, 23 transitions, 131 flow [2022-12-13 15:23:57,355 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=261, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=131, PETRI_PLACES=32, PETRI_TRANSITIONS=23} [2022-12-13 15:23:57,356 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, 4 predicate places. [2022-12-13 15:23:57,356 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 23 transitions, 131 flow [2022-12-13 15:23:57,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:23:57,356 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:23:57,356 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:23:57,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 15:23:57,356 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:23:57,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:23:57,357 INFO L85 PathProgramCache]: Analyzing trace with hash 924692686, now seen corresponding path program 1 times [2022-12-13 15:23:57,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:23:57,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65048027] [2022-12-13 15:23:57,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:23:57,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:23:57,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:23:57,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:23:57,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:23:57,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65048027] [2022-12-13 15:23:57,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65048027] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:23:57,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573047425] [2022-12-13 15:23:57,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:23:57,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:23:57,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:23:57,434 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:23:57,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 15:23:57,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:23:57,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 15:23:57,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:23:57,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:23:57,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:23:57,574 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:23:57,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573047425] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:23:57,574 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:23:57,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 6 [2022-12-13 15:23:57,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398541388] [2022-12-13 15:23:57,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:23:57,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:23:57,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:23:57,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:23:57,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:23:57,608 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 261 [2022-12-13 15:23:57,609 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 23 transitions, 131 flow. Second operand has 7 states, 7 states have (on average 113.85714285714286) internal successors, (797), 7 states have internal predecessors, (797), 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) [2022-12-13 15:23:57,609 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:23:57,610 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 261 [2022-12-13 15:23:57,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:23:57,689 INFO L130 PetriNetUnfolder]: 108/175 cut-off events. [2022-12-13 15:23:57,689 INFO L131 PetriNetUnfolder]: For 166/166 co-relation queries the response was YES. [2022-12-13 15:23:57,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 633 conditions, 175 events. 108/175 cut-off events. For 166/166 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 451 event pairs, 0 based on Foata normal form. 16/191 useless extension candidates. Maximal degree in co-relation 624. Up to 91 conditions per place. [2022-12-13 15:23:57,691 INFO L137 encePairwiseOnDemand]: 256/261 looper letters, 31 selfloop transitions, 8 changer transitions 0/39 dead transitions. [2022-12-13 15:23:57,691 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 39 transitions, 268 flow [2022-12-13 15:23:57,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 15:23:57,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 15:23:57,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 585 transitions. [2022-12-13 15:23:57,693 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4482758620689655 [2022-12-13 15:23:57,694 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 585 transitions. [2022-12-13 15:23:57,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 585 transitions. [2022-12-13 15:23:57,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:23:57,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 585 transitions. [2022-12-13 15:23:57,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 117.0) internal successors, (585), 5 states have internal predecessors, (585), 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) [2022-12-13 15:23:57,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 261.0) internal successors, (1566), 6 states have internal predecessors, (1566), 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) [2022-12-13 15:23:57,698 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 261.0) internal successors, (1566), 6 states have internal predecessors, (1566), 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) [2022-12-13 15:23:57,698 INFO L175 Difference]: Start difference. First operand has 32 places, 23 transitions, 131 flow. Second operand 5 states and 585 transitions. [2022-12-13 15:23:57,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 39 transitions, 268 flow [2022-12-13 15:23:57,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 39 transitions, 256 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-12-13 15:23:57,700 INFO L231 Difference]: Finished difference. Result has 34 places, 24 transitions, 148 flow [2022-12-13 15:23:57,700 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=261, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=148, PETRI_PLACES=34, PETRI_TRANSITIONS=24} [2022-12-13 15:23:57,700 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, 6 predicate places. [2022-12-13 15:23:57,700 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 24 transitions, 148 flow [2022-12-13 15:23:57,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 113.85714285714286) internal successors, (797), 7 states have internal predecessors, (797), 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) [2022-12-13 15:23:57,701 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:23:57,701 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:23:57,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 15:23:57,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:23:57,903 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:23:57,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:23:57,904 INFO L85 PathProgramCache]: Analyzing trace with hash 2081760989, now seen corresponding path program 1 times [2022-12-13 15:23:57,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:23:57,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951170] [2022-12-13 15:23:57,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:23:57,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:23:57,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:23:58,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:23:58,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:23:58,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951170] [2022-12-13 15:23:58,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951170] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:23:58,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831824715] [2022-12-13 15:23:58,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:23:58,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:23:58,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:23:58,258 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:23:58,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 15:23:58,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:23:58,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 15:23:58,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:24:08,867 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:24:08,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:24:09,107 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:24:09,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831824715] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:24:09,108 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:24:09,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2022-12-13 15:24:09,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232117640] [2022-12-13 15:24:09,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:24:09,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 15:24:09,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:24:09,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 15:24:09,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=101, Unknown=4, NotChecked=0, Total=156 [2022-12-13 15:24:11,122 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:24:11,916 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 261 [2022-12-13 15:24:11,917 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 148 flow. Second operand has 13 states, 13 states have (on average 100.0) internal successors, (1300), 13 states have internal predecessors, (1300), 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) [2022-12-13 15:24:11,917 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:24:11,917 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 261 [2022-12-13 15:24:11,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:24:12,699 INFO L130 PetriNetUnfolder]: 224/369 cut-off events. [2022-12-13 15:24:12,699 INFO L131 PetriNetUnfolder]: For 446/446 co-relation queries the response was YES. [2022-12-13 15:24:12,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1419 conditions, 369 events. 224/369 cut-off events. For 446/446 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1246 event pairs, 20 based on Foata normal form. 10/379 useless extension candidates. Maximal degree in co-relation 1409. Up to 189 conditions per place. [2022-12-13 15:24:12,701 INFO L137 encePairwiseOnDemand]: 255/261 looper letters, 48 selfloop transitions, 17 changer transitions 14/79 dead transitions. [2022-12-13 15:24:12,701 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 79 transitions, 560 flow [2022-12-13 15:24:12,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 15:24:12,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 15:24:12,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 947 transitions. [2022-12-13 15:24:12,704 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4031502767134951 [2022-12-13 15:24:12,704 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 947 transitions. [2022-12-13 15:24:12,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 947 transitions. [2022-12-13 15:24:12,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:24:12,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 947 transitions. [2022-12-13 15:24:12,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 105.22222222222223) internal successors, (947), 9 states have internal predecessors, (947), 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) [2022-12-13 15:24:12,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 261.0) internal successors, (2610), 10 states have internal predecessors, (2610), 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) [2022-12-13 15:24:12,708 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 261.0) internal successors, (2610), 10 states have internal predecessors, (2610), 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) [2022-12-13 15:24:12,708 INFO L175 Difference]: Start difference. First operand has 34 places, 24 transitions, 148 flow. Second operand 9 states and 947 transitions. [2022-12-13 15:24:12,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 79 transitions, 560 flow [2022-12-13 15:24:12,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 79 transitions, 542 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 15:24:12,711 INFO L231 Difference]: Finished difference. Result has 45 places, 35 transitions, 282 flow [2022-12-13 15:24:12,711 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=261, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=282, PETRI_PLACES=45, PETRI_TRANSITIONS=35} [2022-12-13 15:24:12,712 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, 17 predicate places. [2022-12-13 15:24:12,712 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 35 transitions, 282 flow [2022-12-13 15:24:12,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 100.0) internal successors, (1300), 13 states have internal predecessors, (1300), 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) [2022-12-13 15:24:12,712 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:24:12,712 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:24:12,718 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 15:24:12,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 15:24:12,913 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:24:12,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:24:12,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1171290979, now seen corresponding path program 2 times [2022-12-13 15:24:12,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:24:12,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940117842] [2022-12-13 15:24:12,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:24:12,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:24:12,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:24:13,279 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:24:13,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:24:13,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940117842] [2022-12-13 15:24:13,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940117842] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:24:13,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412081940] [2022-12-13 15:24:13,280 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 15:24:13,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:24:13,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:24:13,281 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:24:13,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 15:24:13,359 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 15:24:13,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:24:13,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 15:24:13,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:24:13,747 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:24:13,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:24:14,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:24:14,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412081940] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:24:14,015 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:24:14,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2022-12-13 15:24:14,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196371459] [2022-12-13 15:24:14,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:24:14,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 15:24:14,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:24:14,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 15:24:14,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2022-12-13 15:24:14,579 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 261 [2022-12-13 15:24:14,580 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 35 transitions, 282 flow. Second operand has 13 states, 13 states have (on average 107.84615384615384) internal successors, (1402), 13 states have internal predecessors, (1402), 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) [2022-12-13 15:24:14,580 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:24:14,581 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 261 [2022-12-13 15:24:14,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:24:16,001 INFO L130 PetriNetUnfolder]: 550/901 cut-off events. [2022-12-13 15:24:16,001 INFO L131 PetriNetUnfolder]: For 1768/1768 co-relation queries the response was YES. [2022-12-13 15:24:16,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3862 conditions, 901 events. 550/901 cut-off events. For 1768/1768 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3836 event pairs, 30 based on Foata normal form. 5/906 useless extension candidates. Maximal degree in co-relation 3846. Up to 481 conditions per place. [2022-12-13 15:24:16,005 INFO L137 encePairwiseOnDemand]: 255/261 looper letters, 99 selfloop transitions, 53 changer transitions 7/159 dead transitions. [2022-12-13 15:24:16,005 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 159 transitions, 1296 flow [2022-12-13 15:24:16,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 15:24:16,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-13 15:24:16,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1818 transitions. [2022-12-13 15:24:16,008 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4353448275862069 [2022-12-13 15:24:16,008 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1818 transitions. [2022-12-13 15:24:16,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1818 transitions. [2022-12-13 15:24:16,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:24:16,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1818 transitions. [2022-12-13 15:24:16,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 113.625) internal successors, (1818), 16 states have internal predecessors, (1818), 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) [2022-12-13 15:24:16,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 261.0) internal successors, (4437), 17 states have internal predecessors, (4437), 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) [2022-12-13 15:24:16,015 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 261.0) internal successors, (4437), 17 states have internal predecessors, (4437), 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) [2022-12-13 15:24:16,015 INFO L175 Difference]: Start difference. First operand has 45 places, 35 transitions, 282 flow. Second operand 16 states and 1818 transitions. [2022-12-13 15:24:16,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 159 transitions, 1296 flow [2022-12-13 15:24:16,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 159 transitions, 1175 flow, removed 57 selfloop flow, removed 4 redundant places. [2022-12-13 15:24:16,021 INFO L231 Difference]: Finished difference. Result has 65 places, 77 transitions, 765 flow [2022-12-13 15:24:16,021 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=261, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=765, PETRI_PLACES=65, PETRI_TRANSITIONS=77} [2022-12-13 15:24:16,021 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, 37 predicate places. [2022-12-13 15:24:16,021 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 77 transitions, 765 flow [2022-12-13 15:24:16,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 107.84615384615384) internal successors, (1402), 13 states have internal predecessors, (1402), 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) [2022-12-13 15:24:16,022 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:24:16,022 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:24:16,027 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 15:24:16,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-13 15:24:16,223 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:24:16,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:24:16,224 INFO L85 PathProgramCache]: Analyzing trace with hash -2096904151, now seen corresponding path program 3 times [2022-12-13 15:24:16,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:24:16,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124934549] [2022-12-13 15:24:16,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:24:16,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:24:16,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:24:16,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:24:16,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:24:16,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124934549] [2022-12-13 15:24:16,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124934549] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:24:16,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381115366] [2022-12-13 15:24:16,685 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 15:24:16,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:24:16,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:24:16,686 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:24:16,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 15:24:16,760 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 15:24:16,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:24:16,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 15:24:16,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:24:17,147 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:24:17,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:24:17,400 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:24:17,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381115366] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:24:17,400 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:24:17,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2022-12-13 15:24:17,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763022851] [2022-12-13 15:24:17,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:24:17,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 15:24:17,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:24:17,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 15:24:17,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-12-13 15:24:17,835 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 261 [2022-12-13 15:24:17,837 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 77 transitions, 765 flow. Second operand has 13 states, 13 states have (on average 107.84615384615384) internal successors, (1402), 13 states have internal predecessors, (1402), 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) [2022-12-13 15:24:17,837 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:24:17,837 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 261 [2022-12-13 15:24:17,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:24:20,371 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 15:24:20,914 INFO L130 PetriNetUnfolder]: 1105/1805 cut-off events. [2022-12-13 15:24:20,914 INFO L131 PetriNetUnfolder]: For 6846/6846 co-relation queries the response was YES. [2022-12-13 15:24:20,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9140 conditions, 1805 events. 1105/1805 cut-off events. For 6846/6846 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 9040 event pairs, 185 based on Foata normal form. 4/1809 useless extension candidates. Maximal degree in co-relation 9115. Up to 985 conditions per place. [2022-12-13 15:24:20,923 INFO L137 encePairwiseOnDemand]: 255/261 looper letters, 113 selfloop transitions, 61 changer transitions 9/183 dead transitions. [2022-12-13 15:24:20,923 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 183 transitions, 2043 flow [2022-12-13 15:24:20,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 15:24:20,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 15:24:20,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1238 transitions. [2022-12-13 15:24:20,926 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43120863810518983 [2022-12-13 15:24:20,926 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1238 transitions. [2022-12-13 15:24:20,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1238 transitions. [2022-12-13 15:24:20,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:24:20,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1238 transitions. [2022-12-13 15:24:20,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 112.54545454545455) internal successors, (1238), 11 states have internal predecessors, (1238), 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) [2022-12-13 15:24:20,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 261.0) internal successors, (3132), 12 states have internal predecessors, (3132), 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) [2022-12-13 15:24:20,941 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 261.0) internal successors, (3132), 12 states have internal predecessors, (3132), 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) [2022-12-13 15:24:20,941 INFO L175 Difference]: Start difference. First operand has 65 places, 77 transitions, 765 flow. Second operand 11 states and 1238 transitions. [2022-12-13 15:24:20,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 183 transitions, 2043 flow [2022-12-13 15:24:20,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 183 transitions, 1869 flow, removed 84 selfloop flow, removed 2 redundant places. [2022-12-13 15:24:20,953 INFO L231 Difference]: Finished difference. Result has 79 places, 123 transitions, 1361 flow [2022-12-13 15:24:20,954 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=261, PETRI_DIFFERENCE_MINUEND_FLOW=677, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1361, PETRI_PLACES=79, PETRI_TRANSITIONS=123} [2022-12-13 15:24:20,954 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, 51 predicate places. [2022-12-13 15:24:20,954 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 123 transitions, 1361 flow [2022-12-13 15:24:20,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 107.84615384615384) internal successors, (1402), 13 states have internal predecessors, (1402), 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) [2022-12-13 15:24:20,954 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:24:20,955 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:24:20,958 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 15:24:21,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 15:24:21,156 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:24:21,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:24:21,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1727817733, now seen corresponding path program 1 times [2022-12-13 15:24:21,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:24:21,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166757508] [2022-12-13 15:24:21,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:24:21,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:24:21,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:24:21,529 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:24:21,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:24:21,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166757508] [2022-12-13 15:24:21,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166757508] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:24:21,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099447269] [2022-12-13 15:24:21,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:24:21,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:24:21,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:24:21,531 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:24:21,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 15:24:21,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:24:21,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 15:24:21,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:24:22,024 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:24:22,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:24:22,709 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:24:22,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099447269] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:24:22,709 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:24:22,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 13 [2022-12-13 15:24:22,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788592078] [2022-12-13 15:24:22,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:24:22,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 15:24:22,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:24:22,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 15:24:22,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2022-12-13 15:24:23,607 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 261 [2022-12-13 15:24:23,608 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 123 transitions, 1361 flow. Second operand has 15 states, 15 states have (on average 107.66666666666667) internal successors, (1615), 15 states have internal predecessors, (1615), 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) [2022-12-13 15:24:23,608 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:24:23,608 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 261 [2022-12-13 15:24:23,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:24:26,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:24:27,422 INFO L130 PetriNetUnfolder]: 1567/2569 cut-off events. [2022-12-13 15:24:27,422 INFO L131 PetriNetUnfolder]: For 14231/14231 co-relation queries the response was YES. [2022-12-13 15:24:27,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14181 conditions, 2569 events. 1567/2569 cut-off events. For 14231/14231 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 14053 event pairs, 53 based on Foata normal form. 4/2573 useless extension candidates. Maximal degree in co-relation 14149. Up to 1409 conditions per place. [2022-12-13 15:24:27,437 INFO L137 encePairwiseOnDemand]: 255/261 looper letters, 156 selfloop transitions, 105 changer transitions 12/273 dead transitions. [2022-12-13 15:24:27,437 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 273 transitions, 3261 flow [2022-12-13 15:24:27,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 15:24:27,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-12-13 15:24:27,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2245 transitions. [2022-12-13 15:24:27,441 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43007662835249044 [2022-12-13 15:24:27,441 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2245 transitions. [2022-12-13 15:24:27,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2245 transitions. [2022-12-13 15:24:27,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:24:27,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2245 transitions. [2022-12-13 15:24:27,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 112.25) internal successors, (2245), 20 states have internal predecessors, (2245), 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) [2022-12-13 15:24:27,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 261.0) internal successors, (5481), 21 states have internal predecessors, (5481), 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) [2022-12-13 15:24:27,449 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 261.0) internal successors, (5481), 21 states have internal predecessors, (5481), 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) [2022-12-13 15:24:27,449 INFO L175 Difference]: Start difference. First operand has 79 places, 123 transitions, 1361 flow. Second operand 20 states and 2245 transitions. [2022-12-13 15:24:27,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 273 transitions, 3261 flow [2022-12-13 15:24:27,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 273 transitions, 3144 flow, removed 45 selfloop flow, removed 4 redundant places. [2022-12-13 15:24:27,479 INFO L231 Difference]: Finished difference. Result has 101 places, 196 transitions, 2602 flow [2022-12-13 15:24:27,480 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=261, PETRI_DIFFERENCE_MINUEND_FLOW=1266, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2602, PETRI_PLACES=101, PETRI_TRANSITIONS=196} [2022-12-13 15:24:27,480 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, 73 predicate places. [2022-12-13 15:24:27,480 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 196 transitions, 2602 flow [2022-12-13 15:24:27,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 107.66666666666667) internal successors, (1615), 15 states have internal predecessors, (1615), 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) [2022-12-13 15:24:27,481 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:24:27,481 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:24:27,485 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 15:24:27,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 15:24:27,683 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:24:27,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:24:27,683 INFO L85 PathProgramCache]: Analyzing trace with hash 517802825, now seen corresponding path program 2 times [2022-12-13 15:24:27,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:24:27,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381354088] [2022-12-13 15:24:27,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:24:27,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:24:27,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:24:28,178 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:24:28,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:24:28,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381354088] [2022-12-13 15:24:28,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381354088] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:24:28,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911571965] [2022-12-13 15:24:28,179 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 15:24:28,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:24:28,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:24:28,180 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:24:28,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 15:24:28,304 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 15:24:28,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:24:28,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-13 15:24:28,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:24:28,713 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:24:28,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:24:29,477 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:24:29,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911571965] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:24:29,477 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:24:29,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 4] total 15 [2022-12-13 15:24:29,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166976435] [2022-12-13 15:24:29,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:24:29,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 15:24:29,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:24:29,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 15:24:29,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2022-12-13 15:24:30,482 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 261 [2022-12-13 15:24:30,483 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 196 transitions, 2602 flow. Second operand has 17 states, 17 states have (on average 107.6470588235294) internal successors, (1830), 17 states have internal predecessors, (1830), 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) [2022-12-13 15:24:30,483 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:24:30,483 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 261 [2022-12-13 15:24:30,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:24:33,628 INFO L130 PetriNetUnfolder]: 1846/3043 cut-off events. [2022-12-13 15:24:33,628 INFO L131 PetriNetUnfolder]: For 22993/22993 co-relation queries the response was YES. [2022-12-13 15:24:33,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18253 conditions, 3043 events. 1846/3043 cut-off events. For 22993/22993 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 17166 event pairs, 426 based on Foata normal form. 6/3049 useless extension candidates. Maximal degree in co-relation 18214. Up to 2474 conditions per place. [2022-12-13 15:24:33,655 INFO L137 encePairwiseOnDemand]: 255/261 looper letters, 267 selfloop transitions, 59 changer transitions 4/330 dead transitions. [2022-12-13 15:24:33,655 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 330 transitions, 4487 flow [2022-12-13 15:24:33,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 15:24:33,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-13 15:24:33,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1929 transitions. [2022-12-13 15:24:33,659 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4347532116294794 [2022-12-13 15:24:33,660 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1929 transitions. [2022-12-13 15:24:33,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1929 transitions. [2022-12-13 15:24:33,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:24:33,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1929 transitions. [2022-12-13 15:24:33,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 113.47058823529412) internal successors, (1929), 17 states have internal predecessors, (1929), 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) [2022-12-13 15:24:33,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 261.0) internal successors, (4698), 18 states have internal predecessors, (4698), 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) [2022-12-13 15:24:33,671 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 261.0) internal successors, (4698), 18 states have internal predecessors, (4698), 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) [2022-12-13 15:24:33,671 INFO L175 Difference]: Start difference. First operand has 101 places, 196 transitions, 2602 flow. Second operand 17 states and 1929 transitions. [2022-12-13 15:24:33,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 330 transitions, 4487 flow [2022-12-13 15:24:33,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 330 transitions, 3922 flow, removed 272 selfloop flow, removed 5 redundant places. [2022-12-13 15:24:33,779 INFO L231 Difference]: Finished difference. Result has 121 places, 240 transitions, 3040 flow [2022-12-13 15:24:33,779 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=261, PETRI_DIFFERENCE_MINUEND_FLOW=2177, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3040, PETRI_PLACES=121, PETRI_TRANSITIONS=240} [2022-12-13 15:24:33,780 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, 93 predicate places. [2022-12-13 15:24:33,780 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 240 transitions, 3040 flow [2022-12-13 15:24:33,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 107.6470588235294) internal successors, (1830), 17 states have internal predecessors, (1830), 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) [2022-12-13 15:24:33,781 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:24:33,781 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:24:33,785 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 15:24:33,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:24:33,982 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:24:33,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:24:33,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1225752506, now seen corresponding path program 3 times [2022-12-13 15:24:33,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:24:33,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17441630] [2022-12-13 15:24:33,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:24:33,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:24:34,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:24:34,112 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:24:34,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:24:34,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17441630] [2022-12-13 15:24:34,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17441630] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:24:34,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292916033] [2022-12-13 15:24:34,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 15:24:34,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:24:34,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:24:34,113 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:24:34,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 15:24:34,170 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 15:24:34,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:24:34,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 15:24:34,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:24:34,254 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:24:34,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:24:34,338 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:24:34,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292916033] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:24:34,338 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:24:34,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-12-13 15:24:34,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771185555] [2022-12-13 15:24:34,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:24:34,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 15:24:34,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:24:34,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 15:24:34,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-12-13 15:24:34,534 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 261 [2022-12-13 15:24:34,535 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 240 transitions, 3040 flow. Second operand has 10 states, 10 states have (on average 113.0) internal successors, (1130), 10 states have internal predecessors, (1130), 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) [2022-12-13 15:24:34,535 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:24:34,535 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 261 [2022-12-13 15:24:34,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:24:35,673 INFO L130 PetriNetUnfolder]: 3238/5438 cut-off events. [2022-12-13 15:24:35,673 INFO L131 PetriNetUnfolder]: For 46230/46230 co-relation queries the response was YES. [2022-12-13 15:24:35,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31504 conditions, 5438 events. 3238/5438 cut-off events. For 46230/46230 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 35064 event pairs, 90 based on Foata normal form. 80/5518 useless extension candidates. Maximal degree in co-relation 31456. Up to 2891 conditions per place. [2022-12-13 15:24:35,702 INFO L137 encePairwiseOnDemand]: 255/261 looper letters, 536 selfloop transitions, 211 changer transitions 22/769 dead transitions. [2022-12-13 15:24:35,703 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 769 transitions, 10673 flow [2022-12-13 15:24:35,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 15:24:35,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 15:24:35,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1408 transitions. [2022-12-13 15:24:35,705 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4495530012771392 [2022-12-13 15:24:35,705 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1408 transitions. [2022-12-13 15:24:35,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1408 transitions. [2022-12-13 15:24:35,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:24:35,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1408 transitions. [2022-12-13 15:24:35,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 117.33333333333333) internal successors, (1408), 12 states have internal predecessors, (1408), 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) [2022-12-13 15:24:35,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 261.0) internal successors, (3393), 13 states have internal predecessors, (3393), 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) [2022-12-13 15:24:35,709 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 261.0) internal successors, (3393), 13 states have internal predecessors, (3393), 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) [2022-12-13 15:24:35,709 INFO L175 Difference]: Start difference. First operand has 121 places, 240 transitions, 3040 flow. Second operand 12 states and 1408 transitions. [2022-12-13 15:24:35,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 769 transitions, 10673 flow [2022-12-13 15:24:35,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 769 transitions, 9784 flow, removed 423 selfloop flow, removed 5 redundant places. [2022-12-13 15:24:35,836 INFO L231 Difference]: Finished difference. Result has 136 places, 438 transitions, 6416 flow [2022-12-13 15:24:35,836 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=261, PETRI_DIFFERENCE_MINUEND_FLOW=2757, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6416, PETRI_PLACES=136, PETRI_TRANSITIONS=438} [2022-12-13 15:24:35,837 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, 108 predicate places. [2022-12-13 15:24:35,837 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 438 transitions, 6416 flow [2022-12-13 15:24:35,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 113.0) internal successors, (1130), 10 states have internal predecessors, (1130), 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) [2022-12-13 15:24:35,837 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:24:35,837 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:24:35,842 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 15:24:36,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-13 15:24:36,039 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:24:36,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:24:36,040 INFO L85 PathProgramCache]: Analyzing trace with hash 473436660, now seen corresponding path program 4 times [2022-12-13 15:24:36,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:24:36,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370786772] [2022-12-13 15:24:36,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:24:36,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:24:36,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:24:36,160 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:24:36,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:24:36,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370786772] [2022-12-13 15:24:36,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370786772] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:24:36,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160136315] [2022-12-13 15:24:36,161 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 15:24:36,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:24:36,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:24:36,162 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:24:36,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 15:24:36,217 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 15:24:36,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:24:36,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 15:24:36,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:24:36,287 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:24:36,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:24:36,337 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:24:36,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160136315] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:24:36,337 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:24:36,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 8 [2022-12-13 15:24:36,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887547444] [2022-12-13 15:24:36,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:24:36,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 15:24:36,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:24:36,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 15:24:36,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-12-13 15:24:36,424 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 261 [2022-12-13 15:24:36,425 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 438 transitions, 6416 flow. Second operand has 9 states, 9 states have (on average 113.22222222222223) internal successors, (1019), 9 states have internal predecessors, (1019), 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) [2022-12-13 15:24:36,425 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:24:36,426 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 261 [2022-12-13 15:24:36,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:24:37,862 INFO L130 PetriNetUnfolder]: 3548/6283 cut-off events. [2022-12-13 15:24:37,862 INFO L131 PetriNetUnfolder]: For 66371/66371 co-relation queries the response was YES. [2022-12-13 15:24:37,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41432 conditions, 6283 events. 3548/6283 cut-off events. For 66371/66371 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 44415 event pairs, 312 based on Foata normal form. 28/6311 useless extension candidates. Maximal degree in co-relation 41375. Up to 3101 conditions per place. [2022-12-13 15:24:37,906 INFO L137 encePairwiseOnDemand]: 255/261 looper letters, 372 selfloop transitions, 366 changer transitions 6/744 dead transitions. [2022-12-13 15:24:37,906 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 744 transitions, 11546 flow [2022-12-13 15:24:37,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 15:24:37,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-13 15:24:37,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1633 transitions. [2022-12-13 15:24:37,909 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44690749863163653 [2022-12-13 15:24:37,909 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1633 transitions. [2022-12-13 15:24:37,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1633 transitions. [2022-12-13 15:24:37,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:24:37,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1633 transitions. [2022-12-13 15:24:37,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 116.64285714285714) internal successors, (1633), 14 states have internal predecessors, (1633), 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) [2022-12-13 15:24:37,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 261.0) internal successors, (3915), 15 states have internal predecessors, (3915), 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) [2022-12-13 15:24:37,934 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 261.0) internal successors, (3915), 15 states have internal predecessors, (3915), 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) [2022-12-13 15:24:37,934 INFO L175 Difference]: Start difference. First operand has 136 places, 438 transitions, 6416 flow. Second operand 14 states and 1633 transitions. [2022-12-13 15:24:37,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 744 transitions, 11546 flow [2022-12-13 15:24:38,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 744 transitions, 10855 flow, removed 334 selfloop flow, removed 4 redundant places. [2022-12-13 15:24:38,207 INFO L231 Difference]: Finished difference. Result has 151 places, 540 transitions, 8811 flow [2022-12-13 15:24:38,207 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=261, PETRI_DIFFERENCE_MINUEND_FLOW=5809, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=266, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=8811, PETRI_PLACES=151, PETRI_TRANSITIONS=540} [2022-12-13 15:24:38,208 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, 123 predicate places. [2022-12-13 15:24:38,208 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 540 transitions, 8811 flow [2022-12-13 15:24:38,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 113.22222222222223) internal successors, (1019), 9 states have internal predecessors, (1019), 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) [2022-12-13 15:24:38,208 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:24:38,208 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:24:38,212 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 15:24:38,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 15:24:38,410 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:24:38,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:24:38,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1821015971, now seen corresponding path program 5 times [2022-12-13 15:24:38,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:24:38,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286966978] [2022-12-13 15:24:38,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:24:38,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:24:38,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:24:38,853 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:24:38,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:24:38,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286966978] [2022-12-13 15:24:38,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286966978] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:24:38,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755832245] [2022-12-13 15:24:38,854 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 15:24:38,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:24:38,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:24:38,855 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:24:38,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 15:24:39,010 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-12-13 15:24:39,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:24:39,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-13 15:24:39,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:24:39,870 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:24:39,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:24:40,455 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 15:24:40,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755832245] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:24:40,456 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:24:40,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 4] total 15 [2022-12-13 15:24:40,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942833418] [2022-12-13 15:24:40,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:24:40,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 15:24:40,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:24:40,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 15:24:40,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2022-12-13 15:24:42,013 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 261 [2022-12-13 15:24:42,014 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 540 transitions, 8811 flow. Second operand has 17 states, 17 states have (on average 107.52941176470588) internal successors, (1828), 17 states have internal predecessors, (1828), 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) [2022-12-13 15:24:42,014 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:24:42,014 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 261 [2022-12-13 15:24:42,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:24:44,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:24:47,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:24:55,202 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:24:58,715 INFO L130 PetriNetUnfolder]: 3900/6936 cut-off events. [2022-12-13 15:24:58,715 INFO L131 PetriNetUnfolder]: For 86405/86405 co-relation queries the response was YES. [2022-12-13 15:24:58,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49237 conditions, 6936 events. 3900/6936 cut-off events. For 86405/86405 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 50179 event pairs, 396 based on Foata normal form. 29/6965 useless extension candidates. Maximal degree in co-relation 49175. Up to 5957 conditions per place. [2022-12-13 15:24:58,759 INFO L137 encePairwiseOnDemand]: 255/261 looper letters, 606 selfloop transitions, 135 changer transitions 18/759 dead transitions. [2022-12-13 15:24:58,759 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 759 transitions, 13403 flow [2022-12-13 15:24:58,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 15:24:58,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-12-13 15:24:58,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2698 transitions. [2022-12-13 15:24:58,761 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43071519795657726 [2022-12-13 15:24:58,761 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2698 transitions. [2022-12-13 15:24:58,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2698 transitions. [2022-12-13 15:24:58,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:24:58,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2698 transitions. [2022-12-13 15:24:58,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 112.41666666666667) internal successors, (2698), 24 states have internal predecessors, (2698), 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) [2022-12-13 15:24:58,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 261.0) internal successors, (6525), 25 states have internal predecessors, (6525), 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) [2022-12-13 15:24:58,768 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 261.0) internal successors, (6525), 25 states have internal predecessors, (6525), 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) [2022-12-13 15:24:58,768 INFO L175 Difference]: Start difference. First operand has 151 places, 540 transitions, 8811 flow. Second operand 24 states and 2698 transitions. [2022-12-13 15:24:58,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 759 transitions, 13403 flow [2022-12-13 15:24:59,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 759 transitions, 12744 flow, removed 312 selfloop flow, removed 7 redundant places. [2022-12-13 15:24:59,248 INFO L231 Difference]: Finished difference. Result has 180 places, 622 transitions, 10690 flow [2022-12-13 15:24:59,248 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=261, PETRI_DIFFERENCE_MINUEND_FLOW=7988, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=10690, PETRI_PLACES=180, PETRI_TRANSITIONS=622} [2022-12-13 15:24:59,248 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, 152 predicate places. [2022-12-13 15:24:59,248 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 622 transitions, 10690 flow [2022-12-13 15:24:59,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 107.52941176470588) internal successors, (1828), 17 states have internal predecessors, (1828), 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) [2022-12-13 15:24:59,249 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:24:59,249 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:24:59,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-13 15:24:59,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 15:24:59,450 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:24:59,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:24:59,451 INFO L85 PathProgramCache]: Analyzing trace with hash 201055568, now seen corresponding path program 6 times [2022-12-13 15:24:59,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:24:59,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879249767] [2022-12-13 15:24:59,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:24:59,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:24:59,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:24:59,543 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:24:59,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:24:59,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879249767] [2022-12-13 15:24:59,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879249767] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:24:59,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076633854] [2022-12-13 15:24:59,544 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 15:24:59,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:24:59,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:24:59,545 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:24:59,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 15:24:59,601 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-12-13 15:24:59,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:24:59,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 15:24:59,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:24:59,697 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:24:59,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:24:59,767 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:24:59,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076633854] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:24:59,767 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:24:59,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-12-13 15:24:59,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549002073] [2022-12-13 15:24:59,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:24:59,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 15:24:59,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:24:59,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 15:24:59,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-12-13 15:24:59,906 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 261 [2022-12-13 15:24:59,907 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 622 transitions, 10690 flow. Second operand has 10 states, 10 states have (on average 112.9) internal successors, (1129), 10 states have internal predecessors, (1129), 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) [2022-12-13 15:24:59,907 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:24:59,908 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 261 [2022-12-13 15:24:59,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:25:02,158 INFO L130 PetriNetUnfolder]: 4602/8174 cut-off events. [2022-12-13 15:25:02,158 INFO L131 PetriNetUnfolder]: For 109021/109021 co-relation queries the response was YES. [2022-12-13 15:25:02,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59287 conditions, 8174 events. 4602/8174 cut-off events. For 109021/109021 co-relation queries the response was YES. Maximal size of possible extension queue 598. Compared 60840 event pairs, 422 based on Foata normal form. 166/8340 useless extension candidates. Maximal degree in co-relation 59215. Up to 2907 conditions per place. [2022-12-13 15:25:02,211 INFO L137 encePairwiseOnDemand]: 255/261 looper letters, 503 selfloop transitions, 508 changer transitions 0/1011 dead transitions. [2022-12-13 15:25:02,211 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 1011 transitions, 18353 flow [2022-12-13 15:25:02,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 15:25:02,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-13 15:25:02,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1636 transitions. [2022-12-13 15:25:02,213 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44772851669403396 [2022-12-13 15:25:02,213 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1636 transitions. [2022-12-13 15:25:02,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1636 transitions. [2022-12-13 15:25:02,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:25:02,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1636 transitions. [2022-12-13 15:25:02,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 116.85714285714286) internal successors, (1636), 14 states have internal predecessors, (1636), 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) [2022-12-13 15:25:02,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 261.0) internal successors, (3915), 15 states have internal predecessors, (3915), 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) [2022-12-13 15:25:02,217 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 261.0) internal successors, (3915), 15 states have internal predecessors, (3915), 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) [2022-12-13 15:25:02,217 INFO L175 Difference]: Start difference. First operand has 180 places, 622 transitions, 10690 flow. Second operand 14 states and 1636 transitions. [2022-12-13 15:25:02,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 1011 transitions, 18353 flow [2022-12-13 15:25:03,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 1011 transitions, 17471 flow, removed 431 selfloop flow, removed 6 redundant places. [2022-12-13 15:25:03,029 INFO L231 Difference]: Finished difference. Result has 195 places, 765 transitions, 14863 flow [2022-12-13 15:25:03,029 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=261, PETRI_DIFFERENCE_MINUEND_FLOW=10088, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=622, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=371, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=14863, PETRI_PLACES=195, PETRI_TRANSITIONS=765} [2022-12-13 15:25:03,029 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, 167 predicate places. [2022-12-13 15:25:03,029 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 765 transitions, 14863 flow [2022-12-13 15:25:03,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 112.9) internal successors, (1129), 10 states have internal predecessors, (1129), 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) [2022-12-13 15:25:03,030 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:25:03,030 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:25:03,033 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 15:25:03,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 15:25:03,231 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:25:03,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:25:03,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1983171095, now seen corresponding path program 7 times [2022-12-13 15:25:03,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:25:03,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858470829] [2022-12-13 15:25:03,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:25:03,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:25:03,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:25:03,632 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:25:03,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:25:03,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858470829] [2022-12-13 15:25:03,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858470829] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:25:03,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471987017] [2022-12-13 15:25:03,633 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 15:25:03,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:25:03,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:25:03,634 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:25:03,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 15:25:03,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:25:03,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-13 15:25:03,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:25:04,393 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:25:04,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:25:04,837 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:25:04,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471987017] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:25:04,837 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:25:04,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2022-12-13 15:25:04,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979944467] [2022-12-13 15:25:04,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:25:04,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 15:25:04,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:25:04,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 15:25:04,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2022-12-13 15:25:06,528 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 261 [2022-12-13 15:25:06,529 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 765 transitions, 14863 flow. Second operand has 19 states, 19 states have (on average 107.26315789473684) internal successors, (2038), 19 states have internal predecessors, (2038), 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) [2022-12-13 15:25:06,529 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:25:06,529 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 261 [2022-12-13 15:25:06,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:25:14,438 INFO L130 PetriNetUnfolder]: 5454/9582 cut-off events. [2022-12-13 15:25:14,439 INFO L131 PetriNetUnfolder]: For 174977/174977 co-relation queries the response was YES. [2022-12-13 15:25:14,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78916 conditions, 9582 events. 5454/9582 cut-off events. For 174977/174977 co-relation queries the response was YES. Maximal size of possible extension queue 705. Compared 72411 event pairs, 292 based on Foata normal form. 10/9592 useless extension candidates. Maximal degree in co-relation 78836. Up to 3435 conditions per place. [2022-12-13 15:25:14,507 INFO L137 encePairwiseOnDemand]: 255/261 looper letters, 387 selfloop transitions, 735 changer transitions 13/1135 dead transitions. [2022-12-13 15:25:14,507 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 1135 transitions, 24412 flow [2022-12-13 15:25:14,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-13 15:25:14,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-12-13 15:25:14,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2899 transitions. [2022-12-13 15:25:14,511 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4272030651340996 [2022-12-13 15:25:14,511 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2899 transitions. [2022-12-13 15:25:14,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2899 transitions. [2022-12-13 15:25:14,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:25:14,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2899 transitions. [2022-12-13 15:25:14,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 111.5) internal successors, (2899), 26 states have internal predecessors, (2899), 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) [2022-12-13 15:25:14,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 261.0) internal successors, (7047), 27 states have internal predecessors, (7047), 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) [2022-12-13 15:25:14,518 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 261.0) internal successors, (7047), 27 states have internal predecessors, (7047), 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) [2022-12-13 15:25:14,539 INFO L175 Difference]: Start difference. First operand has 195 places, 765 transitions, 14863 flow. Second operand 26 states and 2899 transitions. [2022-12-13 15:25:14,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 1135 transitions, 24412 flow [2022-12-13 15:25:15,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 1135 transitions, 24121 flow, removed 115 selfloop flow, removed 3 redundant places. [2022-12-13 15:25:15,899 INFO L231 Difference]: Finished difference. Result has 226 places, 1002 transitions, 23108 flow [2022-12-13 15:25:15,900 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=261, PETRI_DIFFERENCE_MINUEND_FLOW=14677, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=765, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=520, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=23108, PETRI_PLACES=226, PETRI_TRANSITIONS=1002} [2022-12-13 15:25:15,900 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, 198 predicate places. [2022-12-13 15:25:15,900 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 1002 transitions, 23108 flow [2022-12-13 15:25:15,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 107.26315789473684) internal successors, (2038), 19 states have internal predecessors, (2038), 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) [2022-12-13 15:25:15,901 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:25:15,901 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:25:15,904 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 15:25:16,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:25:16,102 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:25:16,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:25:16,103 INFO L85 PathProgramCache]: Analyzing trace with hash -840859760, now seen corresponding path program 8 times [2022-12-13 15:25:16,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:25:16,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018282162] [2022-12-13 15:25:16,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:25:16,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:25:16,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:25:16,213 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:25:16,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:25:16,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018282162] [2022-12-13 15:25:16,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018282162] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:25:16,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644882910] [2022-12-13 15:25:16,213 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 15:25:16,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:25:16,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:25:16,214 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:25:16,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 15:25:16,270 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 15:25:16,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:25:16,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 15:25:16,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:25:16,356 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:25:16,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:25:16,415 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:25:16,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644882910] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:25:16,415 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:25:16,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 8 [2022-12-13 15:25:16,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562090968] [2022-12-13 15:25:16,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:25:16,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 15:25:16,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:25:16,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 15:25:16,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-12-13 15:25:16,505 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 261 [2022-12-13 15:25:16,506 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 1002 transitions, 23108 flow. Second operand has 9 states, 9 states have (on average 113.33333333333333) internal successors, (1020), 9 states have internal predecessors, (1020), 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) [2022-12-13 15:25:16,506 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:25:16,506 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 261 [2022-12-13 15:25:16,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:25:20,890 INFO L130 PetriNetUnfolder]: 5747/10052 cut-off events. [2022-12-13 15:25:20,890 INFO L131 PetriNetUnfolder]: For 218295/218295 co-relation queries the response was YES. [2022-12-13 15:25:20,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88925 conditions, 10052 events. 5747/10052 cut-off events. For 218295/218295 co-relation queries the response was YES. Maximal size of possible extension queue 766. Compared 76807 event pairs, 101 based on Foata normal form. 108/10160 useless extension candidates. Maximal degree in co-relation 88835. Up to 3565 conditions per place. [2022-12-13 15:25:20,970 INFO L137 encePairwiseOnDemand]: 255/261 looper letters, 1038 selfloop transitions, 541 changer transitions 0/1579 dead transitions. [2022-12-13 15:25:20,970 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 1579 transitions, 34461 flow [2022-12-13 15:25:20,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 15:25:20,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-12-13 15:25:20,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1746 transitions. [2022-12-13 15:25:20,972 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4459770114942529 [2022-12-13 15:25:20,972 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1746 transitions. [2022-12-13 15:25:20,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1746 transitions. [2022-12-13 15:25:20,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:25:20,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1746 transitions. [2022-12-13 15:25:20,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 116.4) internal successors, (1746), 15 states have internal predecessors, (1746), 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) [2022-12-13 15:25:20,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 261.0) internal successors, (4176), 16 states have internal predecessors, (4176), 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) [2022-12-13 15:25:20,977 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 261.0) internal successors, (4176), 16 states have internal predecessors, (4176), 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) [2022-12-13 15:25:20,977 INFO L175 Difference]: Start difference. First operand has 226 places, 1002 transitions, 23108 flow. Second operand 15 states and 1746 transitions. [2022-12-13 15:25:20,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 1579 transitions, 34461 flow [2022-12-13 15:25:22,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 1579 transitions, 31616 flow, removed 1408 selfloop flow, removed 7 redundant places. [2022-12-13 15:25:22,996 INFO L231 Difference]: Finished difference. Result has 237 places, 1091 transitions, 24887 flow [2022-12-13 15:25:22,996 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=261, PETRI_DIFFERENCE_MINUEND_FLOW=20845, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=983, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=441, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=529, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=24887, PETRI_PLACES=237, PETRI_TRANSITIONS=1091} [2022-12-13 15:25:22,996 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, 209 predicate places. [2022-12-13 15:25:22,996 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 1091 transitions, 24887 flow [2022-12-13 15:25:22,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 113.33333333333333) internal successors, (1020), 9 states have internal predecessors, (1020), 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) [2022-12-13 15:25:22,997 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:25:22,997 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:25:23,001 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 15:25:23,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:25:23,198 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:25:23,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:25:23,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1001124297, now seen corresponding path program 9 times [2022-12-13 15:25:23,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:25:23,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286194648] [2022-12-13 15:25:23,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:25:23,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:25:23,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:25:23,672 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:25:23,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:25:23,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286194648] [2022-12-13 15:25:23,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286194648] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:25:23,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645471502] [2022-12-13 15:25:23,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 15:25:23,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:25:23,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:25:23,673 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:25:23,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 15:25:23,920 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-13 15:25:23,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:25:23,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-13 15:25:23,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:25:26,288 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:25:26,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:25:26,835 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:25:26,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645471502] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:25:26,835 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:25:26,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5] total 16 [2022-12-13 15:25:26,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502931439] [2022-12-13 15:25:26,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:25:26,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-13 15:25:26,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:25:26,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-13 15:25:26,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-12-13 15:25:28,583 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 261 [2022-12-13 15:25:28,584 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 1091 transitions, 24887 flow. Second operand has 18 states, 18 states have (on average 107.38888888888889) internal successors, (1933), 18 states have internal predecessors, (1933), 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) [2022-12-13 15:25:28,584 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:25:28,585 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 261 [2022-12-13 15:25:28,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:25:41,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:25:44,375 INFO L130 PetriNetUnfolder]: 6826/11911 cut-off events. [2022-12-13 15:25:44,375 INFO L131 PetriNetUnfolder]: For 272342/272342 co-relation queries the response was YES. [2022-12-13 15:25:44,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107165 conditions, 11911 events. 6826/11911 cut-off events. For 272342/272342 co-relation queries the response was YES. Maximal size of possible extension queue 915. Compared 92668 event pairs, 418 based on Foata normal form. 12/11923 useless extension candidates. Maximal degree in co-relation 107072. Up to 5430 conditions per place. [2022-12-13 15:25:44,474 INFO L137 encePairwiseOnDemand]: 255/261 looper letters, 536 selfloop transitions, 1022 changer transitions 24/1582 dead transitions. [2022-12-13 15:25:44,474 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 1582 transitions, 38755 flow [2022-12-13 15:25:44,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-13 15:25:44,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-13 15:25:44,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3015 transitions. [2022-12-13 15:25:44,478 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4278416347381865 [2022-12-13 15:25:44,478 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3015 transitions. [2022-12-13 15:25:44,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3015 transitions. [2022-12-13 15:25:44,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:25:44,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3015 transitions. [2022-12-13 15:25:44,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 111.66666666666667) internal successors, (3015), 27 states have internal predecessors, (3015), 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) [2022-12-13 15:25:44,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 261.0) internal successors, (7308), 28 states have internal predecessors, (7308), 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) [2022-12-13 15:25:44,485 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 261.0) internal successors, (7308), 28 states have internal predecessors, (7308), 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) [2022-12-13 15:25:44,485 INFO L175 Difference]: Start difference. First operand has 237 places, 1091 transitions, 24887 flow. Second operand 27 states and 3015 transitions. [2022-12-13 15:25:44,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 1582 transitions, 38755 flow [2022-12-13 15:25:47,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 1582 transitions, 37950 flow, removed 397 selfloop flow, removed 1 redundant places. [2022-12-13 15:25:47,489 INFO L231 Difference]: Finished difference. Result has 275 places, 1439 transitions, 37312 flow [2022-12-13 15:25:47,489 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=261, PETRI_DIFFERENCE_MINUEND_FLOW=24472, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1091, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=697, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=37312, PETRI_PLACES=275, PETRI_TRANSITIONS=1439} [2022-12-13 15:25:47,489 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, 247 predicate places. [2022-12-13 15:25:47,489 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 1439 transitions, 37312 flow [2022-12-13 15:25:47,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 107.38888888888889) internal successors, (1933), 18 states have internal predecessors, (1933), 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) [2022-12-13 15:25:47,490 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:25:47,490 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:25:47,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-12-13 15:25:47,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:25:47,691 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:25:47,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:25:47,692 INFO L85 PathProgramCache]: Analyzing trace with hash -933966829, now seen corresponding path program 10 times [2022-12-13 15:25:47,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:25:47,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572144629] [2022-12-13 15:25:47,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:25:47,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:25:47,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:25:47,816 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 15:25:47,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:25:47,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572144629] [2022-12-13 15:25:47,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572144629] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:25:47,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098726542] [2022-12-13 15:25:47,817 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 15:25:47,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:25:47,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:25:47,818 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:25:47,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-13 15:25:47,869 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 15:25:47,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:25:47,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 15:25:47,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:25:47,941 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 15:25:47,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:25:48,006 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 15:25:48,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098726542] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:25:48,006 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:25:48,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-12-13 15:25:48,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511334668] [2022-12-13 15:25:48,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:25:48,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 15:25:48,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:25:48,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 15:25:48,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-12-13 15:25:48,107 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 261 [2022-12-13 15:25:48,108 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 1439 transitions, 37312 flow. Second operand has 10 states, 10 states have (on average 113.5) internal successors, (1135), 10 states have internal predecessors, (1135), 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) [2022-12-13 15:25:48,108 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:25:48,108 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 261 [2022-12-13 15:25:48,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:25:53,966 INFO L130 PetriNetUnfolder]: 6961/12057 cut-off events. [2022-12-13 15:25:53,966 INFO L131 PetriNetUnfolder]: For 324242/324242 co-relation queries the response was YES. [2022-12-13 15:25:54,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116522 conditions, 12057 events. 6961/12057 cut-off events. For 324242/324242 co-relation queries the response was YES. Maximal size of possible extension queue 894. Compared 92689 event pairs, 654 based on Foata normal form. 466/12523 useless extension candidates. Maximal degree in co-relation 116416. Up to 10269 conditions per place. [2022-12-13 15:25:54,078 INFO L137 encePairwiseOnDemand]: 255/261 looper letters, 1418 selfloop transitions, 235 changer transitions 0/1653 dead transitions. [2022-12-13 15:25:54,078 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 1653 transitions, 45164 flow [2022-12-13 15:25:54,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 15:25:54,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-13 15:25:54,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1532 transitions. [2022-12-13 15:25:54,080 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45151783082817565 [2022-12-13 15:25:54,080 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1532 transitions. [2022-12-13 15:25:54,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1532 transitions. [2022-12-13 15:25:54,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:25:54,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1532 transitions. [2022-12-13 15:25:54,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 117.84615384615384) internal successors, (1532), 13 states have internal predecessors, (1532), 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) [2022-12-13 15:25:54,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 261.0) internal successors, (3654), 14 states have internal predecessors, (3654), 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) [2022-12-13 15:25:54,084 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 261.0) internal successors, (3654), 14 states have internal predecessors, (3654), 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) [2022-12-13 15:25:54,084 INFO L175 Difference]: Start difference. First operand has 275 places, 1439 transitions, 37312 flow. Second operand 13 states and 1532 transitions. [2022-12-13 15:25:54,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 1653 transitions, 45164 flow [2022-12-13 15:25:58,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 1653 transitions, 43227 flow, removed 927 selfloop flow, removed 7 redundant places. [2022-12-13 15:25:58,077 INFO L231 Difference]: Finished difference. Result has 287 places, 1532 transitions, 38881 flow [2022-12-13 15:25:58,078 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=261, PETRI_DIFFERENCE_MINUEND_FLOW=34466, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=38881, PETRI_PLACES=287, PETRI_TRANSITIONS=1532} [2022-12-13 15:25:58,079 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, 259 predicate places. [2022-12-13 15:25:58,079 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 1532 transitions, 38881 flow [2022-12-13 15:25:58,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 113.5) internal successors, (1135), 10 states have internal predecessors, (1135), 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) [2022-12-13 15:25:58,079 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:25:58,079 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:25:58,083 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-13 15:25:58,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:25:58,280 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:25:58,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:25:58,281 INFO L85 PathProgramCache]: Analyzing trace with hash 991107790, now seen corresponding path program 11 times [2022-12-13 15:25:58,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:25:58,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534044632] [2022-12-13 15:25:58,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:25:58,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:25:58,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:25:58,361 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 15:25:58,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:25:58,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534044632] [2022-12-13 15:25:58,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534044632] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:25:58,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701941192] [2022-12-13 15:25:58,361 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 15:25:58,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:25:58,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:25:58,362 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:25:58,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-13 15:25:58,410 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 15:25:58,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:25:58,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 15:25:58,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:25:58,436 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 15:25:58,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:25:58,460 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 15:25:58,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701941192] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:25:58,461 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:25:58,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-12-13 15:25:58,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32866233] [2022-12-13 15:25:58,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:25:58,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 15:25:58,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:25:58,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 15:25:58,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-12-13 15:25:58,504 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 261 [2022-12-13 15:25:58,504 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 1532 transitions, 38881 flow. Second operand has 8 states, 8 states have (on average 116.875) internal successors, (935), 8 states have internal predecessors, (935), 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) [2022-12-13 15:25:58,504 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:25:58,504 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 261 [2022-12-13 15:25:58,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:26:02,994 INFO L130 PetriNetUnfolder]: 5319/9283 cut-off events. [2022-12-13 15:26:02,994 INFO L131 PetriNetUnfolder]: For 282229/282229 co-relation queries the response was YES. [2022-12-13 15:26:03,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89046 conditions, 9283 events. 5319/9283 cut-off events. For 282229/282229 co-relation queries the response was YES. Maximal size of possible extension queue 671. Compared 68841 event pairs, 388 based on Foata normal form. 524/9807 useless extension candidates. Maximal degree in co-relation 88935. Up to 5388 conditions per place. [2022-12-13 15:26:03,076 INFO L137 encePairwiseOnDemand]: 258/261 looper letters, 997 selfloop transitions, 257 changer transitions 2/1256 dead transitions. [2022-12-13 15:26:03,076 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 1256 transitions, 33855 flow [2022-12-13 15:26:03,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 15:26:03,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 15:26:03,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 611 transitions. [2022-12-13 15:26:03,077 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4681992337164751 [2022-12-13 15:26:03,078 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 611 transitions. [2022-12-13 15:26:03,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 611 transitions. [2022-12-13 15:26:03,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:26:03,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 611 transitions. [2022-12-13 15:26:03,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 122.2) internal successors, (611), 5 states have internal predecessors, (611), 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) [2022-12-13 15:26:03,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 261.0) internal successors, (1566), 6 states have internal predecessors, (1566), 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) [2022-12-13 15:26:03,079 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 261.0) internal successors, (1566), 6 states have internal predecessors, (1566), 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) [2022-12-13 15:26:03,079 INFO L175 Difference]: Start difference. First operand has 287 places, 1532 transitions, 38881 flow. Second operand 5 states and 611 transitions. [2022-12-13 15:26:03,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 1256 transitions, 33855 flow [2022-12-13 15:26:05,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 1256 transitions, 32658 flow, removed 433 selfloop flow, removed 12 redundant places. [2022-12-13 15:26:05,458 INFO L231 Difference]: Finished difference. Result has 278 places, 1133 transitions, 28358 flow [2022-12-13 15:26:05,459 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=261, PETRI_DIFFERENCE_MINUEND_FLOW=26298, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=229, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=848, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=28358, PETRI_PLACES=278, PETRI_TRANSITIONS=1133} [2022-12-13 15:26:05,459 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, 250 predicate places. [2022-12-13 15:26:05,459 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 1133 transitions, 28358 flow [2022-12-13 15:26:05,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 116.875) internal successors, (935), 8 states have internal predecessors, (935), 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) [2022-12-13 15:26:05,460 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:26:05,460 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:26:05,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-12-13 15:26:05,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-12-13 15:26:05,661 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:26:05,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:26:05,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1316556115, now seen corresponding path program 12 times [2022-12-13 15:26:05,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:26:05,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583781419] [2022-12-13 15:26:05,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:26:05,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:26:05,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:26:05,756 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 15:26:05,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:26:05,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583781419] [2022-12-13 15:26:05,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583781419] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:26:05,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030975701] [2022-12-13 15:26:05,757 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 15:26:05,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:26:05,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:26:05,757 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:26:05,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-13 15:26:05,812 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-12-13 15:26:05,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:26:05,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 15:26:05,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:26:05,872 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 15:26:05,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:26:05,914 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 15:26:05,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030975701] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:26:05,915 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:26:05,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 8 [2022-12-13 15:26:05,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001074693] [2022-12-13 15:26:05,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:26:05,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 15:26:05,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:26:05,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 15:26:05,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-12-13 15:26:06,014 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 261 [2022-12-13 15:26:06,015 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 1133 transitions, 28358 flow. Second operand has 9 states, 9 states have (on average 113.33333333333333) internal successors, (1020), 9 states have internal predecessors, (1020), 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) [2022-12-13 15:26:06,015 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:26:06,015 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 261 [2022-12-13 15:26:06,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:26:10,123 INFO L130 PetriNetUnfolder]: 5409/9512 cut-off events. [2022-12-13 15:26:10,123 INFO L131 PetriNetUnfolder]: For 273703/273703 co-relation queries the response was YES. [2022-12-13 15:26:10,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92293 conditions, 9512 events. 5409/9512 cut-off events. For 273703/273703 co-relation queries the response was YES. Maximal size of possible extension queue 699. Compared 71645 event pairs, 293 based on Foata normal form. 12/9524 useless extension candidates. Maximal degree in co-relation 92186. Up to 6369 conditions per place. [2022-12-13 15:26:10,231 INFO L137 encePairwiseOnDemand]: 255/261 looper letters, 1114 selfloop transitions, 147 changer transitions 21/1282 dead transitions. [2022-12-13 15:26:10,231 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 1282 transitions, 33605 flow [2022-12-13 15:26:10,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 15:26:10,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-12-13 15:26:10,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1741 transitions. [2022-12-13 15:26:10,234 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44469987228607916 [2022-12-13 15:26:10,234 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1741 transitions. [2022-12-13 15:26:10,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1741 transitions. [2022-12-13 15:26:10,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:26:10,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1741 transitions. [2022-12-13 15:26:10,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 116.06666666666666) internal successors, (1741), 15 states have internal predecessors, (1741), 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) [2022-12-13 15:26:10,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 261.0) internal successors, (4176), 16 states have internal predecessors, (4176), 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) [2022-12-13 15:26:10,238 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 261.0) internal successors, (4176), 16 states have internal predecessors, (4176), 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) [2022-12-13 15:26:10,238 INFO L175 Difference]: Start difference. First operand has 278 places, 1133 transitions, 28358 flow. Second operand 15 states and 1741 transitions. [2022-12-13 15:26:10,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 1282 transitions, 33605 flow [2022-12-13 15:26:12,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 1282 transitions, 33163 flow, removed 116 selfloop flow, removed 4 redundant places. [2022-12-13 15:26:12,671 INFO L231 Difference]: Finished difference. Result has 292 places, 1178 transitions, 29405 flow [2022-12-13 15:26:12,671 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=261, PETRI_DIFFERENCE_MINUEND_FLOW=27493, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=991, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=29405, PETRI_PLACES=292, PETRI_TRANSITIONS=1178} [2022-12-13 15:26:12,672 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, 264 predicate places. [2022-12-13 15:26:12,672 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 1178 transitions, 29405 flow [2022-12-13 15:26:12,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 113.33333333333333) internal successors, (1020), 9 states have internal predecessors, (1020), 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) [2022-12-13 15:26:12,672 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:26:12,672 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:26:12,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-12-13 15:26:12,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-12-13 15:26:12,873 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:26:12,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:26:12,874 INFO L85 PathProgramCache]: Analyzing trace with hash -633602143, now seen corresponding path program 13 times [2022-12-13 15:26:12,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:26:12,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090815661] [2022-12-13 15:26:12,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:26:12,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:26:12,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:26:12,994 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:26:12,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:26:12,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090815661] [2022-12-13 15:26:12,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090815661] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:26:12,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789523738] [2022-12-13 15:26:12,995 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 15:26:12,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:26:12,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:26:12,996 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:26:12,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-13 15:26:13,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:26:13,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 15:26:13,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:26:13,099 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:26:13,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:26:13,156 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:26:13,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789523738] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:26:13,156 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:26:13,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-12-13 15:26:13,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384115130] [2022-12-13 15:26:13,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:26:13,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 15:26:13,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:26:13,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 15:26:13,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-12-13 15:26:13,240 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 261 [2022-12-13 15:26:13,240 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 1178 transitions, 29405 flow. Second operand has 10 states, 10 states have (on average 113.0) internal successors, (1130), 10 states have internal predecessors, (1130), 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) [2022-12-13 15:26:13,240 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:26:13,240 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 261 [2022-12-13 15:26:13,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:26:17,376 INFO L130 PetriNetUnfolder]: 5721/10231 cut-off events. [2022-12-13 15:26:17,376 INFO L131 PetriNetUnfolder]: For 333818/333818 co-relation queries the response was YES. [2022-12-13 15:26:17,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100302 conditions, 10231 events. 5721/10231 cut-off events. For 333818/333818 co-relation queries the response was YES. Maximal size of possible extension queue 714. Compared 79245 event pairs, 217 based on Foata normal form. 230/10461 useless extension candidates. Maximal degree in co-relation 100194. Up to 3521 conditions per place. [2022-12-13 15:26:17,466 INFO L137 encePairwiseOnDemand]: 255/261 looper letters, 901 selfloop transitions, 459 changer transitions 87/1447 dead transitions. [2022-12-13 15:26:17,466 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 1447 transitions, 36085 flow [2022-12-13 15:26:17,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 15:26:17,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 15:26:17,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1401 transitions. [2022-12-13 15:26:17,468 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44731800766283525 [2022-12-13 15:26:17,468 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1401 transitions. [2022-12-13 15:26:17,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1401 transitions. [2022-12-13 15:26:17,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:26:17,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1401 transitions. [2022-12-13 15:26:17,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 116.75) internal successors, (1401), 12 states have internal predecessors, (1401), 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) [2022-12-13 15:26:17,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 261.0) internal successors, (3393), 13 states have internal predecessors, (3393), 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) [2022-12-13 15:26:17,472 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 261.0) internal successors, (3393), 13 states have internal predecessors, (3393), 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) [2022-12-13 15:26:17,472 INFO L175 Difference]: Start difference. First operand has 292 places, 1178 transitions, 29405 flow. Second operand 12 states and 1401 transitions. [2022-12-13 15:26:17,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 1447 transitions, 36085 flow [2022-12-13 15:26:20,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 1447 transitions, 35581 flow, removed 243 selfloop flow, removed 3 redundant places. [2022-12-13 15:26:20,220 INFO L231 Difference]: Finished difference. Result has 306 places, 1099 transitions, 28398 flow [2022-12-13 15:26:20,221 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=261, PETRI_DIFFERENCE_MINUEND_FLOW=25462, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1060, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=359, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=621, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=28398, PETRI_PLACES=306, PETRI_TRANSITIONS=1099} [2022-12-13 15:26:20,221 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, 278 predicate places. [2022-12-13 15:26:20,221 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 1099 transitions, 28398 flow [2022-12-13 15:26:20,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 113.0) internal successors, (1130), 10 states have internal predecessors, (1130), 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) [2022-12-13 15:26:20,222 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:26:20,222 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:26:20,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-12-13 15:26:20,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-12-13 15:26:20,423 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:26:20,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:26:20,424 INFO L85 PathProgramCache]: Analyzing trace with hash -766230673, now seen corresponding path program 14 times [2022-12-13 15:26:20,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:26:20,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746810007] [2022-12-13 15:26:20,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:26:20,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:26:20,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:26:20,525 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:26:20,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:26:20,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746810007] [2022-12-13 15:26:20,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746810007] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:26:20,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640592523] [2022-12-13 15:26:20,525 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 15:26:20,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:26:20,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:26:20,526 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:26:20,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-13 15:26:20,580 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 15:26:20,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:26:20,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 15:26:20,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:26:20,656 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:26:20,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:26:20,712 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:26:20,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640592523] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:26:20,712 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:26:20,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 8 [2022-12-13 15:26:20,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791333839] [2022-12-13 15:26:20,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:26:20,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 15:26:20,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:26:20,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 15:26:20,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-12-13 15:26:20,808 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 261 [2022-12-13 15:26:20,809 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 1099 transitions, 28398 flow. Second operand has 9 states, 9 states have (on average 113.44444444444444) internal successors, (1021), 9 states have internal predecessors, (1021), 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) [2022-12-13 15:26:20,809 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:26:20,809 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 261 [2022-12-13 15:26:20,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:26:25,080 INFO L130 PetriNetUnfolder]: 5292/9402 cut-off events. [2022-12-13 15:26:25,080 INFO L131 PetriNetUnfolder]: For 358897/358897 co-relation queries the response was YES. [2022-12-13 15:26:25,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97998 conditions, 9402 events. 5292/9402 cut-off events. For 358897/358897 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 70542 event pairs, 386 based on Foata normal form. 394/9796 useless extension candidates. Maximal degree in co-relation 97883. Up to 4819 conditions per place. [2022-12-13 15:26:25,170 INFO L137 encePairwiseOnDemand]: 256/261 looper letters, 760 selfloop transitions, 527 changer transitions 0/1287 dead transitions. [2022-12-13 15:26:25,171 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 1287 transitions, 34773 flow [2022-12-13 15:26:25,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 15:26:25,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 15:26:25,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1294 transitions. [2022-12-13 15:26:25,173 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4507140369209335 [2022-12-13 15:26:25,173 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1294 transitions. [2022-12-13 15:26:25,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1294 transitions. [2022-12-13 15:26:25,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:26:25,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1294 transitions. [2022-12-13 15:26:25,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 117.63636363636364) internal successors, (1294), 11 states have internal predecessors, (1294), 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) [2022-12-13 15:26:25,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 261.0) internal successors, (3132), 12 states have internal predecessors, (3132), 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) [2022-12-13 15:26:25,176 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 261.0) internal successors, (3132), 12 states have internal predecessors, (3132), 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) [2022-12-13 15:26:25,176 INFO L175 Difference]: Start difference. First operand has 306 places, 1099 transitions, 28398 flow. Second operand 11 states and 1294 transitions. [2022-12-13 15:26:25,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 1287 transitions, 34773 flow [2022-12-13 15:26:28,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 1287 transitions, 33021 flow, removed 839 selfloop flow, removed 4 redundant places. [2022-12-13 15:26:28,067 INFO L231 Difference]: Finished difference. Result has 316 places, 1143 transitions, 30005 flow [2022-12-13 15:26:28,067 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=261, PETRI_DIFFERENCE_MINUEND_FLOW=26474, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1086, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=473, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=598, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=30005, PETRI_PLACES=316, PETRI_TRANSITIONS=1143} [2022-12-13 15:26:28,068 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, 288 predicate places. [2022-12-13 15:26:28,068 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 1143 transitions, 30005 flow [2022-12-13 15:26:28,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 113.44444444444444) internal successors, (1021), 9 states have internal predecessors, (1021), 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) [2022-12-13 15:26:28,068 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:26:28,068 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:26:28,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-12-13 15:26:28,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-12-13 15:26:28,269 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:26:28,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:26:28,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1682925120, now seen corresponding path program 15 times [2022-12-13 15:26:28,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:26:28,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179688236] [2022-12-13 15:26:28,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:26:28,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:26:28,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:26:28,325 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:26:28,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:26:28,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179688236] [2022-12-13 15:26:28,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179688236] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:26:28,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:26:28,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 15:26:28,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954006453] [2022-12-13 15:26:28,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:26:28,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 15:26:28,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:26:28,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 15:26:28,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:26:28,352 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 261 [2022-12-13 15:26:28,352 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 1143 transitions, 30005 flow. Second operand has 5 states, 5 states have (on average 117.6) internal successors, (588), 5 states have internal predecessors, (588), 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) [2022-12-13 15:26:28,352 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:26:28,352 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 261 [2022-12-13 15:26:28,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:26:31,560 INFO L130 PetriNetUnfolder]: 4086/7604 cut-off events. [2022-12-13 15:26:31,560 INFO L131 PetriNetUnfolder]: For 266813/266813 co-relation queries the response was YES. [2022-12-13 15:26:31,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80041 conditions, 7604 events. 4086/7604 cut-off events. For 266813/266813 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 58175 event pairs, 970 based on Foata normal form. 410/8014 useless extension candidates. Maximal degree in co-relation 79923. Up to 3785 conditions per place. [2022-12-13 15:26:31,630 INFO L137 encePairwiseOnDemand]: 258/261 looper letters, 743 selfloop transitions, 159 changer transitions 182/1084 dead transitions. [2022-12-13 15:26:31,630 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 1084 transitions, 31543 flow [2022-12-13 15:26:31,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 15:26:31,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 15:26:31,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 489 transitions. [2022-12-13 15:26:31,631 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46839080459770116 [2022-12-13 15:26:31,631 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 489 transitions. [2022-12-13 15:26:31,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 489 transitions. [2022-12-13 15:26:31,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:26:31,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 489 transitions. [2022-12-13 15:26:31,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 122.25) internal successors, (489), 4 states have internal predecessors, (489), 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) [2022-12-13 15:26:31,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 261.0) internal successors, (1305), 5 states have internal predecessors, (1305), 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) [2022-12-13 15:26:31,632 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 261.0) internal successors, (1305), 5 states have internal predecessors, (1305), 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) [2022-12-13 15:26:31,633 INFO L175 Difference]: Start difference. First operand has 316 places, 1143 transitions, 30005 flow. Second operand 4 states and 489 transitions. [2022-12-13 15:26:31,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 1084 transitions, 31543 flow [2022-12-13 15:26:33,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 1084 transitions, 30871 flow, removed 234 selfloop flow, removed 14 redundant places. [2022-12-13 15:26:33,694 INFO L231 Difference]: Finished difference. Result has 304 places, 814 transitions, 21502 flow [2022-12-13 15:26:33,694 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=261, PETRI_DIFFERENCE_MINUEND_FLOW=24790, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=943, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=784, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=21502, PETRI_PLACES=304, PETRI_TRANSITIONS=814} [2022-12-13 15:26:33,694 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, 276 predicate places. [2022-12-13 15:26:33,695 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 814 transitions, 21502 flow [2022-12-13 15:26:33,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 117.6) internal successors, (588), 5 states have internal predecessors, (588), 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) [2022-12-13 15:26:33,695 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:26:33,695 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:26:33,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-13 15:26:33,695 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:26:33,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:26:33,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1821732717, now seen corresponding path program 4 times [2022-12-13 15:26:33,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:26:33,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234280987] [2022-12-13 15:26:33,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:26:33,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:26:33,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:26:33,793 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:26:33,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:26:33,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234280987] [2022-12-13 15:26:33,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234280987] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:26:33,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54448812] [2022-12-13 15:26:33,794 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 15:26:33,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:26:33,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:26:33,795 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:26:33,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-13 15:26:33,851 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 15:26:33,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:26:33,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 15:26:33,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:26:33,946 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:26:33,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:26:34,014 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:26:34,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54448812] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:26:34,015 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:26:34,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 5] total 11 [2022-12-13 15:26:34,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867219193] [2022-12-13 15:26:34,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:26:34,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 15:26:34,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:26:34,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 15:26:34,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-12-13 15:26:34,169 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 261 [2022-12-13 15:26:34,169 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 814 transitions, 21502 flow. Second operand has 12 states, 12 states have (on average 112.75) internal successors, (1353), 12 states have internal predecessors, (1353), 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) [2022-12-13 15:26:34,169 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:26:34,169 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 261 [2022-12-13 15:26:34,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:26:37,547 INFO L130 PetriNetUnfolder]: 4237/7749 cut-off events. [2022-12-13 15:26:37,547 INFO L131 PetriNetUnfolder]: For 292295/292295 co-relation queries the response was YES. [2022-12-13 15:26:37,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83692 conditions, 7749 events. 4237/7749 cut-off events. For 292295/292295 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 57212 event pairs, 418 based on Foata normal form. 112/7861 useless extension candidates. Maximal degree in co-relation 83581. Up to 2331 conditions per place. [2022-12-13 15:26:37,620 INFO L137 encePairwiseOnDemand]: 255/261 looper letters, 606 selfloop transitions, 643 changer transitions 0/1249 dead transitions. [2022-12-13 15:26:37,620 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 1249 transitions, 34704 flow [2022-12-13 15:26:37,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-13 15:26:37,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-12-13 15:26:37,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2691 transitions. [2022-12-13 15:26:37,623 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4482758620689655 [2022-12-13 15:26:37,623 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2691 transitions. [2022-12-13 15:26:37,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2691 transitions. [2022-12-13 15:26:37,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:26:37,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2691 transitions. [2022-12-13 15:26:37,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 117.0) internal successors, (2691), 23 states have internal predecessors, (2691), 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) [2022-12-13 15:26:37,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 261.0) internal successors, (6264), 24 states have internal predecessors, (6264), 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) [2022-12-13 15:26:37,629 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 261.0) internal successors, (6264), 24 states have internal predecessors, (6264), 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) [2022-12-13 15:26:37,629 INFO L175 Difference]: Start difference. First operand has 304 places, 814 transitions, 21502 flow. Second operand 23 states and 2691 transitions. [2022-12-13 15:26:37,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 1249 transitions, 34704 flow [2022-12-13 15:26:39,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 1249 transitions, 33986 flow, removed 225 selfloop flow, removed 7 redundant places. [2022-12-13 15:26:39,425 INFO L231 Difference]: Finished difference. Result has 326 places, 1031 transitions, 30205 flow [2022-12-13 15:26:39,425 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=261, PETRI_DIFFERENCE_MINUEND_FLOW=21024, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=812, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=455, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=30205, PETRI_PLACES=326, PETRI_TRANSITIONS=1031} [2022-12-13 15:26:39,425 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, 298 predicate places. [2022-12-13 15:26:39,426 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 1031 transitions, 30205 flow [2022-12-13 15:26:39,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 112.75) internal successors, (1353), 12 states have internal predecessors, (1353), 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) [2022-12-13 15:26:39,426 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:26:39,426 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:26:39,430 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-12-13 15:26:39,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-12-13 15:26:39,627 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:26:39,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:26:39,628 INFO L85 PathProgramCache]: Analyzing trace with hash 554010695, now seen corresponding path program 5 times [2022-12-13 15:26:39,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:26:39,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888387955] [2022-12-13 15:26:39,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:26:39,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:26:39,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:26:39,758 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:26:39,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:26:39,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888387955] [2022-12-13 15:26:39,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888387955] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:26:39,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519557536] [2022-12-13 15:26:39,758 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 15:26:39,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:26:39,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:26:39,759 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:26:39,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-12-13 15:26:39,807 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-13 15:26:39,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:26:39,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 15:26:39,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:26:39,916 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:26:39,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:26:40,004 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:26:40,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519557536] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:26:40,005 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:26:40,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 5] total 11 [2022-12-13 15:26:40,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260161714] [2022-12-13 15:26:40,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:26:40,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 15:26:40,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:26:40,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 15:26:40,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-12-13 15:26:40,127 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 261 [2022-12-13 15:26:40,128 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 1031 transitions, 30205 flow. Second operand has 12 states, 12 states have (on average 112.83333333333333) internal successors, (1354), 12 states have internal predecessors, (1354), 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) [2022-12-13 15:26:40,128 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:26:40,128 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 261 [2022-12-13 15:26:40,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:26:43,857 INFO L130 PetriNetUnfolder]: 4056/7463 cut-off events. [2022-12-13 15:26:43,857 INFO L131 PetriNetUnfolder]: For 317233/317233 co-relation queries the response was YES. [2022-12-13 15:26:43,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83931 conditions, 7463 events. 4056/7463 cut-off events. For 317233/317233 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 55641 event pairs, 119 based on Foata normal form. 84/7547 useless extension candidates. Maximal degree in co-relation 83814. Up to 2131 conditions per place. [2022-12-13 15:26:43,929 INFO L137 encePairwiseOnDemand]: 255/261 looper letters, 802 selfloop transitions, 519 changer transitions 14/1335 dead transitions. [2022-12-13 15:26:43,929 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 1335 transitions, 37966 flow [2022-12-13 15:26:43,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-13 15:26:43,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-12-13 15:26:43,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2904 transitions. [2022-12-13 15:26:43,932 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44505747126436784 [2022-12-13 15:26:43,932 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2904 transitions. [2022-12-13 15:26:43,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2904 transitions. [2022-12-13 15:26:43,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:26:43,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2904 transitions. [2022-12-13 15:26:43,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 116.16) internal successors, (2904), 25 states have internal predecessors, (2904), 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) [2022-12-13 15:26:43,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 261.0) internal successors, (6786), 26 states have internal predecessors, (6786), 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) [2022-12-13 15:26:43,938 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 261.0) internal successors, (6786), 26 states have internal predecessors, (6786), 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) [2022-12-13 15:26:43,938 INFO L175 Difference]: Start difference. First operand has 326 places, 1031 transitions, 30205 flow. Second operand 25 states and 2904 transitions. [2022-12-13 15:26:43,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 1335 transitions, 37966 flow [2022-12-13 15:26:46,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 1335 transitions, 37128 flow, removed 373 selfloop flow, removed 4 redundant places. [2022-12-13 15:26:46,159 INFO L231 Difference]: Finished difference. Result has 350 places, 1037 transitions, 31124 flow [2022-12-13 15:26:46,160 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=261, PETRI_DIFFERENCE_MINUEND_FLOW=28781, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1012, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=498, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=513, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=31124, PETRI_PLACES=350, PETRI_TRANSITIONS=1037} [2022-12-13 15:26:46,160 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, 322 predicate places. [2022-12-13 15:26:46,161 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 1037 transitions, 31124 flow [2022-12-13 15:26:46,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 112.83333333333333) internal successors, (1354), 12 states have internal predecessors, (1354), 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) [2022-12-13 15:26:46,161 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:26:46,161 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:26:46,165 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-12-13 15:26:46,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-12-13 15:26:46,362 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:26:46,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:26:46,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1205260403, now seen corresponding path program 16 times [2022-12-13 15:26:46,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:26:46,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758561031] [2022-12-13 15:26:46,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:26:46,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:26:46,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:26:46,775 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:26:46,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:26:46,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758561031] [2022-12-13 15:26:46,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758561031] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:26:46,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223412698] [2022-12-13 15:26:46,776 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 15:26:46,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:26:46,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:26:46,777 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:26:46,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-12-13 15:26:47,004 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 15:26:47,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:26:47,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-13 15:26:47,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:26:47,766 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:26:47,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:26:48,694 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:26:48,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223412698] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:26:48,694 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:26:48,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 23 [2022-12-13 15:26:48,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172231725] [2022-12-13 15:26:48,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:26:48,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-13 15:26:48,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:26:48,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-13 15:26:48,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=492, Unknown=0, NotChecked=0, Total=600 [2022-12-13 15:26:50,730 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 261 [2022-12-13 15:26:50,732 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 1037 transitions, 31124 flow. Second operand has 25 states, 25 states have (on average 106.96) internal successors, (2674), 25 states have internal predecessors, (2674), 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) [2022-12-13 15:26:50,732 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:26:50,732 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 261 [2022-12-13 15:26:50,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:27:07,965 INFO L130 PetriNetUnfolder]: 7305/12907 cut-off events. [2022-12-13 15:27:07,965 INFO L131 PetriNetUnfolder]: For 614867/614867 co-relation queries the response was YES. [2022-12-13 15:27:08,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159577 conditions, 12907 events. 7305/12907 cut-off events. For 614867/614867 co-relation queries the response was YES. Maximal size of possible extension queue 621. Compared 96322 event pairs, 357 based on Foata normal form. 34/12941 useless extension candidates. Maximal degree in co-relation 159455. Up to 4853 conditions per place. [2022-12-13 15:27:08,142 INFO L137 encePairwiseOnDemand]: 255/261 looper letters, 855 selfloop transitions, 1385 changer transitions 78/2318 dead transitions. [2022-12-13 15:27:08,142 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 2318 transitions, 77957 flow [2022-12-13 15:27:08,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-12-13 15:27:08,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-12-13 15:27:08,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 5640 transitions. [2022-12-13 15:27:08,147 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4237097137705657 [2022-12-13 15:27:08,147 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 5640 transitions. [2022-12-13 15:27:08,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 5640 transitions. [2022-12-13 15:27:08,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:27:08,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 5640 transitions. [2022-12-13 15:27:08,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 110.58823529411765) internal successors, (5640), 51 states have internal predecessors, (5640), 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) [2022-12-13 15:27:08,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 261.0) internal successors, (13572), 52 states have internal predecessors, (13572), 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) [2022-12-13 15:27:08,159 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 261.0) internal successors, (13572), 52 states have internal predecessors, (13572), 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) [2022-12-13 15:27:08,159 INFO L175 Difference]: Start difference. First operand has 350 places, 1037 transitions, 31124 flow. Second operand 51 states and 5640 transitions. [2022-12-13 15:27:08,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 2318 transitions, 77957 flow [2022-12-13 15:27:14,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 2318 transitions, 73897 flow, removed 1776 selfloop flow, removed 8 redundant places. [2022-12-13 15:27:14,417 INFO L231 Difference]: Finished difference. Result has 402 places, 1897 transitions, 65645 flow [2022-12-13 15:27:14,418 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=261, PETRI_DIFFERENCE_MINUEND_FLOW=29891, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1037, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=585, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=65645, PETRI_PLACES=402, PETRI_TRANSITIONS=1897} [2022-12-13 15:27:14,418 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, 374 predicate places. [2022-12-13 15:27:14,418 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 1897 transitions, 65645 flow [2022-12-13 15:27:14,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 106.96) internal successors, (2674), 25 states have internal predecessors, (2674), 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) [2022-12-13 15:27:14,419 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:27:14,419 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:27:14,422 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-12-13 15:27:14,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:27:14,620 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:27:14,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:27:14,621 INFO L85 PathProgramCache]: Analyzing trace with hash -420741834, now seen corresponding path program 17 times [2022-12-13 15:27:14,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:27:14,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769066257] [2022-12-13 15:27:14,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:27:14,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:27:14,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:27:15,015 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:27:15,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:27:15,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769066257] [2022-12-13 15:27:15,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769066257] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:27:15,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94381720] [2022-12-13 15:27:15,015 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 15:27:15,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:27:15,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:27:15,016 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:27:15,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-12-13 15:27:15,453 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-12-13 15:27:15,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:27:15,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-13 15:27:15,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:27:15,959 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:27:15,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:27:59,967 WARN L233 SmtUtils]: Spent 6.36s on a formula simplification that was a NOOP. DAG size: 29 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 15:28:00,162 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:28:00,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94381720] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:28:00,162 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:28:00,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 19 [2022-12-13 15:28:00,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010396536] [2022-12-13 15:28:00,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:28:00,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-13 15:28:00,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:28:00,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-13 15:28:00,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=333, Unknown=18, NotChecked=0, Total=420 [2022-12-13 15:28:02,378 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 15:28:04,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 15:28:06,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 15:28:09,021 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 15:28:11,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 15:28:13,308 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 15:28:15,374 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 15:28:17,478 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 15:28:17,490 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 261 [2022-12-13 15:28:17,490 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 1897 transitions, 65645 flow. Second operand has 21 states, 21 states have (on average 99.57142857142857) internal successors, (2091), 21 states have internal predecessors, (2091), 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) [2022-12-13 15:28:17,491 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:28:17,491 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 261 [2022-12-13 15:28:17,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:28:24,625 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (* 4294967296 (div (+ 2 c_~k1~0) 4294967296))) (.cse2 (+ c_~j1~0 1)) (.cse5 (* 4294967296 (div c_~k2~0 4294967296))) (.cse4 (+ c_~k2~0 (* 4294967296 (div c_~k1~0 4294967296))))) (and (forall ((~m~0 Int)) (or (let ((.cse0 (* 2 ~m~0))) (< (+ c_~k2~0 .cse0 .cse1) (+ 3 c_~k1~0 (* (div (+ c_~k2~0 .cse0) 4294967296) 4294967296)))) (not (< c_~j1~0 ~m~0)) (< .cse2 ~m~0))) (forall ((~m~0 Int)) (or (not (< c_~j1~0 ~m~0)) (let ((.cse3 (* 2 ~m~0))) (<= (+ 2 c_~k1~0 (* (div (+ c_~k2~0 .cse3) 4294967296) 4294967296)) (+ c_~k2~0 .cse3 .cse1))) (< .cse2 ~m~0))) (< .cse4 (+ .cse5 c_~k1~0 1)) (<= (+ .cse5 c_~k1~0) .cse4))) is different from false [2022-12-13 15:28:29,329 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 15:28:31,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 15:28:34,385 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (* 4294967296 (div (+ 2 c_~k1~0) 4294967296))) (.cse2 (+ c_~j1~0 1))) (and (forall ((~m~0 Int)) (or (let ((.cse0 (* 2 ~m~0))) (< (+ c_~k2~0 .cse0 .cse1) (+ 3 c_~k1~0 (* (div (+ c_~k2~0 .cse0) 4294967296) 4294967296)))) (not (< c_~j1~0 ~m~0)) (< .cse2 ~m~0))) (exists ((~m~0 Int)) (and (< 0 ~m~0) (not (< 1 ~m~0)) (= (mod (+ c_~k2~0 (* 4294967294 ~m~0)) 4294967296) 0))) (forall ((~m~0 Int)) (or (not (< c_~j1~0 ~m~0)) (let ((.cse3 (* 2 ~m~0))) (<= (+ 2 c_~k1~0 (* (div (+ c_~k2~0 .cse3) 4294967296) 4294967296)) (+ c_~k2~0 .cse3 .cse1))) (< .cse2 ~m~0))) (= (mod (+ 4294967294 c_~k1~0) 4294967296) 0))) is different from false [2022-12-13 15:28:37,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 15:28:39,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 15:28:41,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 15:28:44,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 15:28:46,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-12-13 15:28:48,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 15:28:50,052 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 15:28:52,122 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 15:28:54,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 15:28:56,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 15:28:58,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 15:29:00,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 15:29:02,182 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 15:29:04,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 15:29:11,418 INFO L130 PetriNetUnfolder]: 7982/14214 cut-off events. [2022-12-13 15:29:11,419 INFO L131 PetriNetUnfolder]: For 665159/665159 co-relation queries the response was YES. [2022-12-13 15:29:11,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175501 conditions, 14214 events. 7982/14214 cut-off events. For 665159/665159 co-relation queries the response was YES. Maximal size of possible extension queue 714. Compared 109085 event pairs, 746 based on Foata normal form. 18/14232 useless extension candidates. Maximal degree in co-relation 175371. Up to 12998 conditions per place. [2022-12-13 15:29:11,594 INFO L137 encePairwiseOnDemand]: 253/261 looper letters, 2021 selfloop transitions, 176 changer transitions 19/2216 dead transitions. [2022-12-13 15:29:11,594 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 2216 transitions, 79181 flow [2022-12-13 15:29:11,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 15:29:11,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-13 15:29:11,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1977 transitions. [2022-12-13 15:29:11,597 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3986690865093769 [2022-12-13 15:29:11,597 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1977 transitions. [2022-12-13 15:29:11,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1977 transitions. [2022-12-13 15:29:11,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:29:11,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1977 transitions. [2022-12-13 15:29:11,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 104.05263157894737) internal successors, (1977), 19 states have internal predecessors, (1977), 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) [2022-12-13 15:29:11,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 261.0) internal successors, (5220), 20 states have internal predecessors, (5220), 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) [2022-12-13 15:29:11,602 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 261.0) internal successors, (5220), 20 states have internal predecessors, (5220), 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) [2022-12-13 15:29:11,602 INFO L175 Difference]: Start difference. First operand has 402 places, 1897 transitions, 65645 flow. Second operand 19 states and 1977 transitions. [2022-12-13 15:29:11,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 2216 transitions, 79181 flow [2022-12-13 15:29:18,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 2216 transitions, 71326 flow, removed 3914 selfloop flow, removed 7 redundant places. [2022-12-13 15:29:18,440 INFO L231 Difference]: Finished difference. Result has 424 places, 2047 transitions, 63518 flow [2022-12-13 15:29:18,441 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=261, PETRI_DIFFERENCE_MINUEND_FLOW=57814, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1897, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1789, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=63518, PETRI_PLACES=424, PETRI_TRANSITIONS=2047} [2022-12-13 15:29:18,441 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, 396 predicate places. [2022-12-13 15:29:18,441 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 2047 transitions, 63518 flow [2022-12-13 15:29:18,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 99.57142857142857) internal successors, (2091), 21 states have internal predecessors, (2091), 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) [2022-12-13 15:29:18,442 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:29:18,442 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:29:18,445 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-12-13 15:29:18,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:29:18,643 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:29:18,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:29:18,644 INFO L85 PathProgramCache]: Analyzing trace with hash -471229512, now seen corresponding path program 18 times [2022-12-13 15:29:18,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:29:18,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467052369] [2022-12-13 15:29:18,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:29:18,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:29:18,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:29:18,971 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:29:18,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:29:18,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467052369] [2022-12-13 15:29:18,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467052369] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:29:18,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168976822] [2022-12-13 15:29:18,972 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 15:29:18,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:29:18,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:29:18,973 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:29:18,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-12-13 15:29:19,348 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-12-13 15:29:19,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:29:19,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-13 15:29:19,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:29:19,804 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:29:19,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:29:50,705 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:29:50,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168976822] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:29:50,705 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:29:50,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 19 [2022-12-13 15:29:50,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787898354] [2022-12-13 15:29:50,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:29:50,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-13 15:29:50,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:29:50,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-13 15:29:50,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=344, Unknown=10, NotChecked=0, Total=420 [2022-12-13 15:29:52,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 15:29:55,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 15:29:57,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 15:29:59,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 15:30:01,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 15:30:04,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 15:30:06,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 15:30:08,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 15:30:08,406 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 261 [2022-12-13 15:30:08,407 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 2047 transitions, 63518 flow. Second operand has 21 states, 21 states have (on average 99.38095238095238) internal successors, (2087), 21 states have internal predecessors, (2087), 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) [2022-12-13 15:30:08,407 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:30:08,407 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 261 [2022-12-13 15:30:08,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:30:11,259 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse5 (* 4294967296 (div (+ 2 c_~k1~0) 4294967296))) (.cse3 (+ c_~j1~0 1))) (and (not (< 1 c_~m~0)) (or (let ((.cse2 (* c_~m~0 2))) (let ((.cse1 (+ c_~k2~0 .cse2 (* (div (+ c_~k1~0 1) 4294967296) 4294967296))) (.cse0 (* (div (+ c_~k2~0 .cse2) 4294967296) 4294967296))) (and (< (+ .cse0 c_~k1~0) .cse1) (<= .cse1 (+ .cse0 c_~k1~0 1))))) (< c_~j1~0 c_~m~0)) (< 0 c_~m~0) (= (mod (+ (* c_~m~0 4294967295) c_~k2~0) 4294967296) 0) (forall ((~m~0 Int)) (or (not (< c_~j1~0 ~m~0)) (< .cse3 ~m~0) (let ((.cse4 (* 2 ~m~0))) (< (+ c_~k1~0 (* (div (+ c_~k2~0 .cse4) 4294967296) 4294967296) 1) (+ c_~k2~0 .cse4 .cse5))))) (forall ((~m~0 Int)) (or (let ((.cse6 (* 2 ~m~0))) (<= (+ c_~k2~0 .cse6 .cse5) (+ 2 c_~k1~0 (* (div (+ c_~k2~0 .cse6) 4294967296) 4294967296)))) (not (< c_~j1~0 ~m~0)) (< .cse3 ~m~0))) (= (mod (+ 4294967295 c_~k1~0) 4294967296) 0))) is different from false [2022-12-13 15:30:14,845 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (* 4294967296 (div (+ 2 c_~k1~0) 4294967296))) (.cse0 (+ c_~j1~0 1))) (and (exists ((~m~0 Int)) (and (< 0 ~m~0) (not (< 1 ~m~0)) (= (mod (+ c_~k2~0 (* 4294967294 ~m~0)) 4294967296) 0))) (= (mod (+ 4294967294 c_~k1~0) 4294967296) 0) (forall ((~m~0 Int)) (or (not (< c_~j1~0 ~m~0)) (< .cse0 ~m~0) (let ((.cse1 (* 2 ~m~0))) (< (+ c_~k1~0 (* (div (+ c_~k2~0 .cse1) 4294967296) 4294967296) 1) (+ c_~k2~0 .cse1 .cse2))))) (forall ((~m~0 Int)) (or (let ((.cse3 (* 2 ~m~0))) (<= (+ c_~k2~0 .cse3 .cse2) (+ 2 c_~k1~0 (* (div (+ c_~k2~0 .cse3) 4294967296) 4294967296)))) (not (< c_~j1~0 ~m~0)) (< .cse0 ~m~0))))) is different from false [2022-12-13 15:30:18,513 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse4 (* 4294967296 (div (+ 2 c_~k1~0) 4294967296))) (.cse2 (+ c_~j1~0 1)) (.cse1 (+ (* 4294967296 (div c_~k2~0 4294967296)) c_~k1~0)) (.cse0 (* 4294967296 (div c_~k1~0 4294967296)))) (and (<= (+ c_~k2~0 .cse0) .cse1) (forall ((~m~0 Int)) (or (not (< c_~j1~0 ~m~0)) (< .cse2 ~m~0) (let ((.cse3 (* 2 ~m~0))) (< (+ c_~k1~0 (* (div (+ c_~k2~0 .cse3) 4294967296) 4294967296) 1) (+ c_~k2~0 .cse3 .cse4))))) (forall ((~m~0 Int)) (or (let ((.cse5 (* 2 ~m~0))) (<= (+ c_~k2~0 .cse5 .cse4) (+ 2 c_~k1~0 (* (div (+ c_~k2~0 .cse5) 4294967296) 4294967296)))) (not (< c_~j1~0 ~m~0)) (< .cse2 ~m~0))) (< .cse1 (+ c_~k2~0 .cse0 1)))) is different from false [2022-12-13 15:30:26,355 INFO L130 PetriNetUnfolder]: 8440/15104 cut-off events. [2022-12-13 15:30:26,355 INFO L131 PetriNetUnfolder]: For 723631/723631 co-relation queries the response was YES. [2022-12-13 15:30:26,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175932 conditions, 15104 events. 8440/15104 cut-off events. For 723631/723631 co-relation queries the response was YES. Maximal size of possible extension queue 768. Compared 117994 event pairs, 786 based on Foata normal form. 9/15113 useless extension candidates. Maximal degree in co-relation 175790. Up to 14268 conditions per place. [2022-12-13 15:30:26,611 INFO L137 encePairwiseOnDemand]: 253/261 looper letters, 2146 selfloop transitions, 132 changer transitions 5/2283 dead transitions. [2022-12-13 15:30:26,611 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 2283 transitions, 75019 flow [2022-12-13 15:30:26,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 15:30:26,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-13 15:30:26,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1867 transitions. [2022-12-13 15:30:26,614 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.39740315027671347 [2022-12-13 15:30:26,614 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1867 transitions. [2022-12-13 15:30:26,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1867 transitions. [2022-12-13 15:30:26,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:30:26,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1867 transitions. [2022-12-13 15:30:26,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 103.72222222222223) internal successors, (1867), 18 states have internal predecessors, (1867), 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) [2022-12-13 15:30:26,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 261.0) internal successors, (4959), 19 states have internal predecessors, (4959), 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) [2022-12-13 15:30:26,618 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 261.0) internal successors, (4959), 19 states have internal predecessors, (4959), 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) [2022-12-13 15:30:26,618 INFO L175 Difference]: Start difference. First operand has 424 places, 2047 transitions, 63518 flow. Second operand 18 states and 1867 transitions. [2022-12-13 15:30:26,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 2283 transitions, 75019 flow [2022-12-13 15:30:33,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 2283 transitions, 74011 flow, removed 498 selfloop flow, removed 4 redundant places. [2022-12-13 15:30:33,921 INFO L231 Difference]: Finished difference. Result has 447 places, 2155 transitions, 66614 flow [2022-12-13 15:30:33,922 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=261, PETRI_DIFFERENCE_MINUEND_FLOW=62510, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2047, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1959, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=66614, PETRI_PLACES=447, PETRI_TRANSITIONS=2155} [2022-12-13 15:30:33,922 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, 419 predicate places. [2022-12-13 15:30:33,922 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 2155 transitions, 66614 flow [2022-12-13 15:30:33,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 99.38095238095238) internal successors, (2087), 21 states have internal predecessors, (2087), 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) [2022-12-13 15:30:33,922 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:30:33,922 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:30:33,927 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-12-13 15:30:34,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:30:34,123 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:30:34,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:30:34,124 INFO L85 PathProgramCache]: Analyzing trace with hash 2046021895, now seen corresponding path program 19 times [2022-12-13 15:30:34,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:30:34,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270366850] [2022-12-13 15:30:34,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:30:34,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:30:34,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:30:34,661 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:30:34,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:30:34,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270366850] [2022-12-13 15:30:34,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270366850] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:30:34,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825430883] [2022-12-13 15:30:34,661 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 15:30:34,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:30:34,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:30:34,662 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:30:34,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-12-13 15:30:34,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:30:34,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 32 conjunts are in the unsatisfiable core [2022-12-13 15:30:34,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:30:35,558 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:30:35,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:30:37,478 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 15:30:37,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825430883] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:30:37,479 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:30:37,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 6] total 23 [2022-12-13 15:30:37,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922501613] [2022-12-13 15:30:37,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:30:37,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-13 15:30:37,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:30:37,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-13 15:30:37,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2022-12-13 15:30:39,385 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 261 [2022-12-13 15:30:39,386 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 2155 transitions, 66614 flow. Second operand has 25 states, 25 states have (on average 107.04) internal successors, (2676), 25 states have internal predecessors, (2676), 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) [2022-12-13 15:30:39,386 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:30:39,386 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 261 [2022-12-13 15:30:39,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:30:46,828 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:30:55,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:30:56,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:31:07,317 INFO L130 PetriNetUnfolder]: 9310/16569 cut-off events. [2022-12-13 15:31:07,317 INFO L131 PetriNetUnfolder]: For 818299/818299 co-relation queries the response was YES. [2022-12-13 15:31:07,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200276 conditions, 16569 events. 9310/16569 cut-off events. For 818299/818299 co-relation queries the response was YES. Maximal size of possible extension queue 842. Compared 130843 event pairs, 686 based on Foata normal form. 7/16576 useless extension candidates. Maximal degree in co-relation 200123. Up to 10223 conditions per place. [2022-12-13 15:31:07,578 INFO L137 encePairwiseOnDemand]: 255/261 looper letters, 1041 selfloop transitions, 1476 changer transitions 52/2569 dead transitions. [2022-12-13 15:31:07,578 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 2569 transitions, 82455 flow [2022-12-13 15:31:07,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-12-13 15:31:07,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-12-13 15:31:07,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 4000 transitions. [2022-12-13 15:31:07,583 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4257130693912303 [2022-12-13 15:31:07,583 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 4000 transitions. [2022-12-13 15:31:07,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 4000 transitions. [2022-12-13 15:31:07,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:31:07,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 4000 transitions. [2022-12-13 15:31:07,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 111.11111111111111) internal successors, (4000), 36 states have internal predecessors, (4000), 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) [2022-12-13 15:31:07,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 261.0) internal successors, (9657), 37 states have internal predecessors, (9657), 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) [2022-12-13 15:31:07,591 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 261.0) internal successors, (9657), 37 states have internal predecessors, (9657), 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) [2022-12-13 15:31:07,591 INFO L175 Difference]: Start difference. First operand has 447 places, 2155 transitions, 66614 flow. Second operand 36 states and 4000 transitions. [2022-12-13 15:31:07,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 2569 transitions, 82455 flow [2022-12-13 15:31:16,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 2569 transitions, 81563 flow, removed 438 selfloop flow, removed 5 redundant places. [2022-12-13 15:31:16,488 INFO L231 Difference]: Finished difference. Result has 487 places, 2394 transitions, 80056 flow [2022-12-13 15:31:16,489 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=261, PETRI_DIFFERENCE_MINUEND_FLOW=65722, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1265, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=835, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=80056, PETRI_PLACES=487, PETRI_TRANSITIONS=2394} [2022-12-13 15:31:16,489 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, 459 predicate places. [2022-12-13 15:31:16,489 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 2394 transitions, 80056 flow [2022-12-13 15:31:16,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 107.04) internal successors, (2676), 25 states have internal predecessors, (2676), 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) [2022-12-13 15:31:16,489 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:31:16,489 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:31:16,493 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-12-13 15:31:16,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-12-13 15:31:16,691 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:31:16,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:31:16,692 INFO L85 PathProgramCache]: Analyzing trace with hash -290356736, now seen corresponding path program 20 times [2022-12-13 15:31:16,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:31:16,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625730477] [2022-12-13 15:31:16,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:31:16,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:31:16,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:31:16,778 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:31:16,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:31:16,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625730477] [2022-12-13 15:31:16,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625730477] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:31:16,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219750966] [2022-12-13 15:31:16,779 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 15:31:16,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:31:16,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:31:16,780 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:31:16,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-12-13 15:31:16,833 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 15:31:16,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:31:16,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 15:31:16,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:31:16,877 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:31:16,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:31:16,929 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:31:16,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219750966] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:31:16,930 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:31:16,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-12-13 15:31:16,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327587204] [2022-12-13 15:31:16,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:31:16,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 15:31:16,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:31:16,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 15:31:16,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-12-13 15:31:16,999 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 261 [2022-12-13 15:31:17,000 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 2394 transitions, 80056 flow. Second operand has 11 states, 11 states have (on average 116.45454545454545) internal successors, (1281), 11 states have internal predecessors, (1281), 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) [2022-12-13 15:31:17,000 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:31:17,000 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 261 [2022-12-13 15:31:17,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:31:33,091 INFO L130 PetriNetUnfolder]: 11118/20021 cut-off events. [2022-12-13 15:31:33,091 INFO L131 PetriNetUnfolder]: For 1136409/1136409 co-relation queries the response was YES. [2022-12-13 15:31:33,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253711 conditions, 20021 events. 11118/20021 cut-off events. For 1136409/1136409 co-relation queries the response was YES. Maximal size of possible extension queue 1041. Compared 166433 event pairs, 500 based on Foata normal form. 666/20687 useless extension candidates. Maximal degree in co-relation 253548. Up to 8653 conditions per place. [2022-12-13 15:31:33,416 INFO L137 encePairwiseOnDemand]: 258/261 looper letters, 2498 selfloop transitions, 580 changer transitions 27/3105 dead transitions. [2022-12-13 15:31:33,416 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 3105 transitions, 109702 flow [2022-12-13 15:31:33,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 15:31:33,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 15:31:33,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 858 transitions. [2022-12-13 15:31:33,418 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4696223316912972 [2022-12-13 15:31:33,418 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 858 transitions. [2022-12-13 15:31:33,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 858 transitions. [2022-12-13 15:31:33,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:31:33,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 858 transitions. [2022-12-13 15:31:33,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 122.57142857142857) internal successors, (858), 7 states have internal predecessors, (858), 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) [2022-12-13 15:31:33,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 261.0) internal successors, (2088), 8 states have internal predecessors, (2088), 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) [2022-12-13 15:31:33,420 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 261.0) internal successors, (2088), 8 states have internal predecessors, (2088), 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) [2022-12-13 15:31:33,420 INFO L175 Difference]: Start difference. First operand has 487 places, 2394 transitions, 80056 flow. Second operand 7 states and 858 transitions. [2022-12-13 15:31:33,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 3105 transitions, 109702 flow [2022-12-13 15:31:46,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 3105 transitions, 107621 flow, removed 972 selfloop flow, removed 13 redundant places. [2022-12-13 15:31:46,194 INFO L231 Difference]: Finished difference. Result has 480 places, 2366 transitions, 79344 flow [2022-12-13 15:31:46,195 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=261, PETRI_DIFFERENCE_MINUEND_FLOW=71696, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=429, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1765, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=79344, PETRI_PLACES=480, PETRI_TRANSITIONS=2366} [2022-12-13 15:31:46,195 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, 452 predicate places. [2022-12-13 15:31:46,195 INFO L495 AbstractCegarLoop]: Abstraction has has 480 places, 2366 transitions, 79344 flow [2022-12-13 15:31:46,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 116.45454545454545) internal successors, (1281), 11 states have internal predecessors, (1281), 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) [2022-12-13 15:31:46,195 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:31:46,196 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:31:46,199 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-12-13 15:31:46,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-12-13 15:31:46,397 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:31:46,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:31:46,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1478842900, now seen corresponding path program 21 times [2022-12-13 15:31:46,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:31:46,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225205624] [2022-12-13 15:31:46,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:31:46,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:31:46,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:31:46,828 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:31:46,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:31:46,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225205624] [2022-12-13 15:31:46,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225205624] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:31:46,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007893351] [2022-12-13 15:31:46,828 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 15:31:46,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:31:46,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:31:46,829 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:31:46,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-12-13 15:31:47,128 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-13 15:31:47,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:31:47,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 22 conjunts are in the unsatisfiable core [2022-12-13 15:31:47,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:31:47,684 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:31:47,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:32:11,025 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:32:11,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007893351] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:32:11,026 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:32:11,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 21 [2022-12-13 15:32:11,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778557513] [2022-12-13 15:32:11,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:32:11,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-13 15:32:11,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:32:11,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-13 15:32:11,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=423, Unknown=4, NotChecked=0, Total=506 [2022-12-13 15:32:13,546 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 261 [2022-12-13 15:32:13,547 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 2366 transitions, 79344 flow. Second operand has 23 states, 23 states have (on average 107.21739130434783) internal successors, (2466), 23 states have internal predecessors, (2466), 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) [2022-12-13 15:32:13,547 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:32:13,547 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 261 [2022-12-13 15:32:13,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:32:15,738 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse5 (* 4294967296 (div c_~k2~0 4294967296))) (.cse4 (* 4294967296 (div c_~i1~0 4294967296))) (.cse1 (* 4294967296 (div (+ 2 c_~k1~0) 4294967296)))) (and (forall ((~m~0 Int)) (or (let ((.cse0 (* 2 ~m~0))) (< (+ c_~k2~0 .cse0 .cse1) (+ 3 c_~k1~0 (* (div (+ c_~k2~0 .cse0) 4294967296) 4294967296)))) (not (< c_~j1~0 ~m~0)) (< 1 ~m~0))) (or (let ((.cse3 (+ c_~k2~0 c_~m~0 (* 4294967296 (div c_~k1~0 4294967296)))) (.cse2 (* (div (+ c_~k2~0 c_~m~0) 4294967296) 4294967296))) (and (<= (+ .cse2 c_~k1~0) .cse3) (< .cse3 (+ .cse2 c_~k1~0 1)))) (< c_~j1~0 c_~m~0)) (< 0 c_~m~0) (= c_~i1~0 0) (<= (+ c_~k2~0 (* c_~j1~0 2) .cse4) (+ c_~i1~0 .cse5 2)) (<= (+ c_~i1~0 .cse5 1) (+ c_~k1~0 .cse4 (* (div (+ (- 1) c_~k2~0 (- c_~k1~0) (* c_~m~0 2)) 4294967296) 4294967296))) (= (mod c_~k2~0 4294967296) 0) (forall ((~m~0 Int)) (or (not (< c_~j1~0 ~m~0)) (let ((.cse6 (* 2 ~m~0))) (<= (+ 2 c_~k1~0 (* (div (+ c_~k2~0 .cse6) 4294967296) 4294967296)) (+ c_~k2~0 .cse6 .cse1))) (< 1 ~m~0))) (= (mod (+ 4294967295 c_~k1~0) 4294967296) 0))) is different from false [2022-12-13 15:32:18,824 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 15:32:20,834 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 15:32:22,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 15:32:24,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 15:32:27,229 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (* 4294967296 (div (+ 2 c_~k1~0) 4294967296))) (.cse4 (* 4294967296 (div c_~k2~0 4294967296))) (.cse3 (+ c_~k2~0 (* 4294967296 (div c_~k1~0 4294967296))))) (and (forall ((~m~0 Int)) (or (let ((.cse0 (* 2 ~m~0))) (< (+ c_~k2~0 .cse0 .cse1) (+ 3 c_~k1~0 (* (div (+ c_~k2~0 .cse0) 4294967296) 4294967296)))) (not (< c_~j1~0 ~m~0)) (< 1 ~m~0))) (forall ((~m~0 Int)) (or (not (< c_~j1~0 ~m~0)) (let ((.cse2 (* 2 ~m~0))) (<= (+ 2 c_~k1~0 (* (div (+ c_~k2~0 .cse2) 4294967296) 4294967296)) (+ c_~k2~0 .cse2 .cse1))) (< 1 ~m~0))) (< .cse3 (+ .cse4 c_~k1~0 1)) (<= (+ .cse4 c_~k1~0) .cse3))) is different from false [2022-12-13 15:32:29,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 15:32:31,333 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 15:32:33,424 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 15:32:35,450 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 15:32:40,880 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse11 (* (div (+ c_~k1~0 1) 4294967296) 4294967296)) (.cse2 (* (div (+ c_~k2~0 c_~m~0) 4294967296) 4294967296))) (let ((.cse5 (* 4294967296 (div c_~k1~0 4294967296))) (.cse6 (< c_~j1~0 c_~m~0)) (.cse4 (+ .cse2 c_~k1~0 1)) (.cse9 (let ((.cse16 (* c_~m~0 2))) (let ((.cse15 (+ c_~k2~0 .cse16 .cse11)) (.cse14 (* (div (+ c_~k2~0 .cse16) 4294967296) 4294967296))) (and (<= (+ .cse14 c_~k1~0 1) .cse15) (< .cse15 (+ .cse14 2 c_~k1~0)))))) (.cse12 (< (+ c_~j1~0 1) c_~m~0)) (.cse1 (* 4294967296 (div (+ 2 c_~k1~0) 4294967296)))) (and (forall ((~m~0 Int)) (or (let ((.cse0 (* 2 ~m~0))) (< (+ c_~k2~0 .cse0 .cse1) (+ 3 c_~k1~0 (* (div (+ c_~k2~0 .cse0) 4294967296) 4294967296)))) (not (< c_~j1~0 ~m~0)) (< 1 ~m~0))) (or (let ((.cse3 (+ c_~k2~0 c_~m~0 .cse5))) (and (<= (+ .cse2 c_~k1~0) .cse3) (< .cse3 .cse4))) .cse6) (or (let ((.cse8 (* 4294967296 (div c_~k2~0 4294967296))) (.cse7 (+ c_~k2~0 .cse5))) (and (< .cse7 (+ .cse8 c_~k1~0 1)) (<= (+ .cse8 c_~k1~0) .cse7))) .cse6) (or (< 1 c_~m~0) .cse9) (or (let ((.cse10 (+ c_~k2~0 c_~m~0 .cse11))) (and (<= .cse4 .cse10) (< .cse10 (+ .cse2 2 c_~k1~0)))) .cse12) (or .cse9 .cse12) (forall ((~m~0 Int)) (or (not (< c_~j1~0 ~m~0)) (let ((.cse13 (* 2 ~m~0))) (<= (+ 2 c_~k1~0 (* (div (+ c_~k2~0 .cse13) 4294967296) 4294967296)) (+ c_~k2~0 .cse13 .cse1))) (< 1 ~m~0)))))) is different from false [2022-12-13 15:32:44,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 15:32:46,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 15:32:48,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 15:32:50,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 15:32:52,602 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (* 4294967296 (div (+ 2 c_~k1~0) 4294967296)))) (and (forall ((~m~0 Int)) (or (let ((.cse0 (* 2 ~m~0))) (< (+ c_~k2~0 .cse0 .cse1) (+ 3 c_~k1~0 (* (div (+ c_~k2~0 .cse0) 4294967296) 4294967296)))) (not (< c_~j1~0 ~m~0)) (< 1 ~m~0))) (exists ((~m~0 Int)) (and (< 0 ~m~0) (not (< 1 ~m~0)) (= (mod (+ c_~k2~0 (* 4294967294 ~m~0)) 4294967296) 0))) (= (mod (+ 4294967294 c_~k1~0) 4294967296) 0) (forall ((~m~0 Int)) (or (not (< c_~j1~0 ~m~0)) (let ((.cse2 (* 2 ~m~0))) (<= (+ 2 c_~k1~0 (* (div (+ c_~k2~0 .cse2) 4294967296) 4294967296)) (+ c_~k2~0 .cse2 .cse1))) (< 1 ~m~0))))) is different from false [2022-12-13 15:32:54,747 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse5 (* 4294967296 (div c_~k1~0 4294967296))) (.cse8 (* (div (+ c_~k1~0 1) 4294967296) 4294967296)) (.cse2 (* (div (+ c_~k2~0 c_~m~0) 4294967296) 4294967296))) (let ((.cse4 (+ .cse2 c_~k1~0 1)) (.cse6 (let ((.cse15 (* c_~m~0 2))) (let ((.cse14 (+ c_~k2~0 .cse15 .cse8)) (.cse13 (* (div (+ c_~k2~0 .cse15) 4294967296) 4294967296))) (and (<= (+ .cse13 c_~k1~0 1) .cse14) (< .cse14 (+ .cse13 2 c_~k1~0)))))) (.cse9 (< (+ c_~j1~0 1) c_~m~0)) (.cse1 (* 4294967296 (div (+ 2 c_~k1~0) 4294967296))) (.cse12 (* 4294967296 (div c_~k2~0 4294967296))) (.cse11 (+ c_~k2~0 .cse5))) (and (forall ((~m~0 Int)) (or (let ((.cse0 (* 2 ~m~0))) (< (+ c_~k2~0 .cse0 .cse1) (+ 3 c_~k1~0 (* (div (+ c_~k2~0 .cse0) 4294967296) 4294967296)))) (not (< c_~j1~0 ~m~0)) (< 1 ~m~0))) (or (let ((.cse3 (+ c_~k2~0 c_~m~0 .cse5))) (and (<= (+ .cse2 c_~k1~0) .cse3) (< .cse3 .cse4))) (< c_~j1~0 c_~m~0)) (or (< 1 c_~m~0) .cse6) (or (let ((.cse7 (+ c_~k2~0 c_~m~0 .cse8))) (and (<= .cse4 .cse7) (< .cse7 (+ .cse2 2 c_~k1~0)))) .cse9) (or .cse6 .cse9) (forall ((~m~0 Int)) (or (not (< c_~j1~0 ~m~0)) (let ((.cse10 (* 2 ~m~0))) (<= (+ 2 c_~k1~0 (* (div (+ c_~k2~0 .cse10) 4294967296) 4294967296)) (+ c_~k2~0 .cse10 .cse1))) (< 1 ~m~0))) (< .cse11 (+ .cse12 c_~k1~0 1)) (<= (+ .cse12 c_~k1~0) .cse11)))) is different from false [2022-12-13 15:33:10,697 INFO L130 PetriNetUnfolder]: 11807/21266 cut-off events. [2022-12-13 15:33:10,697 INFO L131 PetriNetUnfolder]: For 1155080/1155080 co-relation queries the response was YES. [2022-12-13 15:33:10,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274702 conditions, 21266 events. 11807/21266 cut-off events. For 1155080/1155080 co-relation queries the response was YES. Maximal size of possible extension queue 1134. Compared 177867 event pairs, 1171 based on Foata normal form. 10/21276 useless extension candidates. Maximal degree in co-relation 274540. Up to 20367 conditions per place. [2022-12-13 15:33:11,065 INFO L137 encePairwiseOnDemand]: 251/261 looper letters, 2470 selfloop transitions, 233 changer transitions 12/2715 dead transitions. [2022-12-13 15:33:11,065 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 2715 transitions, 95752 flow [2022-12-13 15:33:11,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-13 15:33:11,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-12-13 15:33:11,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3102 transitions. [2022-12-13 15:33:11,068 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4244663382594417 [2022-12-13 15:33:11,068 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3102 transitions. [2022-12-13 15:33:11,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3102 transitions. [2022-12-13 15:33:11,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:33:11,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3102 transitions. [2022-12-13 15:33:11,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 110.78571428571429) internal successors, (3102), 28 states have internal predecessors, (3102), 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) [2022-12-13 15:33:11,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 261.0) internal successors, (7569), 29 states have internal predecessors, (7569), 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) [2022-12-13 15:33:11,075 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 261.0) internal successors, (7569), 29 states have internal predecessors, (7569), 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) [2022-12-13 15:33:11,075 INFO L175 Difference]: Start difference. First operand has 480 places, 2366 transitions, 79344 flow. Second operand 28 states and 3102 transitions. [2022-12-13 15:33:11,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 2715 transitions, 95752 flow [2022-12-13 15:33:25,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 2715 transitions, 95036 flow, removed 71 selfloop flow, removed 4 redundant places. [2022-12-13 15:33:25,589 INFO L231 Difference]: Finished difference. Result has 525 places, 2597 transitions, 88261 flow [2022-12-13 15:33:25,590 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=261, PETRI_DIFFERENCE_MINUEND_FLOW=78740, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=88261, PETRI_PLACES=525, PETRI_TRANSITIONS=2597} [2022-12-13 15:33:25,590 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, 497 predicate places. [2022-12-13 15:33:25,590 INFO L495 AbstractCegarLoop]: Abstraction has has 525 places, 2597 transitions, 88261 flow [2022-12-13 15:33:25,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 107.21739130434783) internal successors, (2466), 23 states have internal predecessors, (2466), 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) [2022-12-13 15:33:25,590 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:33:25,591 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:33:25,595 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-12-13 15:33:25,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:33:25,792 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:33:25,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:33:25,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1966013314, now seen corresponding path program 22 times [2022-12-13 15:33:25,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:33:25,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757647941] [2022-12-13 15:33:25,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:33:25,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:33:25,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:33:26,151 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:33:26,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:33:26,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757647941] [2022-12-13 15:33:26,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757647941] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:33:26,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048751004] [2022-12-13 15:33:26,151 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 15:33:26,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:33:26,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:33:26,152 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:33:26,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-12-13 15:33:26,460 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 15:33:26,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:33:26,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-13 15:33:26,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:33:27,035 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:33:27,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:33:29,630 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:33:29,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048751004] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:33:29,630 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:33:29,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2022-12-13 15:33:29,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908732758] [2022-12-13 15:33:29,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:33:29,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-13 15:33:29,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:33:29,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-13 15:33:29,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=383, Unknown=1, NotChecked=0, Total=462 [2022-12-13 15:33:31,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 15:33:34,059 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 15:33:36,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 15:33:38,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 15:33:40,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 15:33:42,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 15:33:44,713 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 15:33:46,827 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 15:33:46,844 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 261 [2022-12-13 15:33:46,845 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 2597 transitions, 88261 flow. Second operand has 22 states, 22 states have (on average 99.36363636363636) internal successors, (2186), 22 states have internal predecessors, (2186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:33:46,845 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:33:46,845 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 261 [2022-12-13 15:33:46,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:33:59,225 WARN L233 SmtUtils]: Spent 9.43s on a formula simplification. DAG size of input: 51 DAG size of output: 31 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 15:34:02,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:34:07,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 15:34:14,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 15:34:17,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 15:34:19,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 15:34:32,974 WARN L233 SmtUtils]: Spent 9.34s on a formula simplification. DAG size of input: 47 DAG size of output: 27 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 15:34:34,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 15:34:37,161 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 15:34:40,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 15:34:56,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 15:35:06,857 INFO L130 PetriNetUnfolder]: 12948/23447 cut-off events. [2022-12-13 15:35:06,857 INFO L131 PetriNetUnfolder]: For 1525976/1525976 co-relation queries the response was YES. [2022-12-13 15:35:07,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 334727 conditions, 23447 events. 12948/23447 cut-off events. For 1525976/1525976 co-relation queries the response was YES. Maximal size of possible extension queue 1251. Compared 200413 event pairs, 1065 based on Foata normal form. 30/23477 useless extension candidates. Maximal degree in co-relation 334545. Up to 15097 conditions per place. [2022-12-13 15:35:07,516 INFO L137 encePairwiseOnDemand]: 253/261 looper letters, 1364 selfloop transitions, 1720 changer transitions 36/3120 dead transitions. [2022-12-13 15:35:07,516 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 553 places, 3120 transitions, 113421 flow [2022-12-13 15:35:07,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-13 15:35:07,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-12-13 15:35:07,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3009 transitions. [2022-12-13 15:35:07,521 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.39754260800634167 [2022-12-13 15:35:07,521 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3009 transitions. [2022-12-13 15:35:07,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3009 transitions. [2022-12-13 15:35:07,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:35:07,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3009 transitions. [2022-12-13 15:35:07,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 103.75862068965517) internal successors, (3009), 29 states have internal predecessors, (3009), 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) [2022-12-13 15:35:07,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 261.0) internal successors, (7830), 30 states have internal predecessors, (7830), 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) [2022-12-13 15:35:07,531 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 261.0) internal successors, (7830), 30 states have internal predecessors, (7830), 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) [2022-12-13 15:35:07,531 INFO L175 Difference]: Start difference. First operand has 525 places, 2597 transitions, 88261 flow. Second operand 29 states and 3009 transitions. [2022-12-13 15:35:07,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 553 places, 3120 transitions, 113421 flow [2022-12-13 15:35:26,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 551 places, 3120 transitions, 109935 flow, removed 1740 selfloop flow, removed 2 redundant places. [2022-12-13 15:35:26,545 INFO L231 Difference]: Finished difference. Result has 565 places, 2910 transitions, 105114 flow [2022-12-13 15:35:26,546 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=261, PETRI_DIFFERENCE_MINUEND_FLOW=86169, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2597, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1448, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=105114, PETRI_PLACES=565, PETRI_TRANSITIONS=2910} [2022-12-13 15:35:26,546 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, 537 predicate places. [2022-12-13 15:35:26,547 INFO L495 AbstractCegarLoop]: Abstraction has has 565 places, 2910 transitions, 105114 flow [2022-12-13 15:35:26,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 99.36363636363636) internal successors, (2186), 22 states have internal predecessors, (2186), 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) [2022-12-13 15:35:26,547 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:35:26,547 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:35:26,551 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-12-13 15:35:26,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-12-13 15:35:26,748 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:35:26,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:35:26,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1909063274, now seen corresponding path program 23 times [2022-12-13 15:35:26,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:35:26,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654393966] [2022-12-13 15:35:26,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:35:26,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:35:26,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:35:27,155 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:35:27,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:35:27,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654393966] [2022-12-13 15:35:27,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654393966] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:35:27,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277127579] [2022-12-13 15:35:27,155 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 15:35:27,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:35:27,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:35:27,156 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:35:27,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c29998-3d46-4005-8d6b-966c18ea0485/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-12-13 15:35:27,532 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-12-13 15:35:27,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:35:27,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-13 15:35:27,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:35:28,075 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:35:28,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:36:17,005 WARN L233 SmtUtils]: Spent 6.04s on a formula simplification that was a NOOP. DAG size: 28 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 15:36:17,142 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:36:17,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277127579] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:36:17,142 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:36:17,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 19 [2022-12-13 15:36:17,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119629979] [2022-12-13 15:36:17,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:36:17,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-13 15:36:17,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:36:17,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-13 15:36:17,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=339, Unknown=21, NotChecked=0, Total=420 [2022-12-13 15:36:19,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 15:36:21,440 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 15:36:23,674 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 15:36:26,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 15:36:28,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 15:36:30,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 15:36:32,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 15:36:34,734 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 15:36:36,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 15:36:36,952 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 261 [2022-12-13 15:36:36,954 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 565 places, 2910 transitions, 105114 flow. Second operand has 21 states, 21 states have (on average 99.42857142857143) internal successors, (2088), 21 states have internal predecessors, (2088), 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) [2022-12-13 15:36:36,954 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:36:36,954 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 261 [2022-12-13 15:36:36,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:36:57,491 WARN L233 SmtUtils]: Spent 14.08s on a formula simplification. DAG size of input: 32 DAG size of output: 29 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 15:37:18,471 WARN L233 SmtUtils]: Spent 14.09s on a formula simplification. DAG size of input: 32 DAG size of output: 29 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 15:37:44,071 WARN L233 SmtUtils]: Spent 14.09s on a formula simplification. DAG size of input: 32 DAG size of output: 29 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 15:37:46,174 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse6 (* 4294967296 (div c_~k2~0 4294967296)))) (let ((.cse3 (* (div (+ c_~k1~0 1) 4294967296) 4294967296)) (.cse4 (< c_~j1~0 c_~m~0)) (.cse13 (* 4294967296 (div (+ 2 c_~k1~0) 4294967296))) (.cse11 (+ c_~j1~0 1)) (.cse7 (+ .cse6 c_~k1~0)) (.cse10 (* 4294967296 (div c_~k1~0 4294967296)))) (and (<= c_~j1~0 1) (or (let ((.cse2 (* c_~m~0 2))) (let ((.cse1 (+ c_~k2~0 .cse2 .cse3)) (.cse0 (* (div (+ c_~k2~0 .cse2) 4294967296) 4294967296))) (and (< (+ .cse0 c_~k1~0) .cse1) (<= .cse1 (+ .cse0 c_~k1~0 1))))) .cse4) (or (let ((.cse5 (+ c_~k2~0 .cse3))) (and (<= .cse5 (+ .cse6 c_~k1~0 1)) (< .cse7 .cse5))) .cse4) (< 0 c_~m~0) (or (let ((.cse9 (+ c_~k2~0 c_~m~0 .cse3)) (.cse8 (* (div (+ c_~k2~0 c_~m~0) 4294967296) 4294967296))) (and (< (+ .cse8 c_~k1~0) .cse9) (<= .cse9 (+ .cse8 c_~k1~0 1)))) .cse4) (= (mod (+ (* c_~m~0 4294967295) c_~k2~0) 4294967296) 0) (<= (+ c_~k2~0 .cse10) .cse7) (forall ((~m~0 Int)) (or (not (< c_~j1~0 ~m~0)) (< .cse11 ~m~0) (let ((.cse12 (* 2 ~m~0))) (< (+ c_~k1~0 (* (div (+ c_~k2~0 .cse12) 4294967296) 4294967296) 1) (+ c_~k2~0 .cse12 .cse13))))) (forall ((~m~0 Int)) (or (let ((.cse14 (* 2 ~m~0))) (<= (+ c_~k2~0 .cse14 .cse13) (+ 2 c_~k1~0 (* (div (+ c_~k2~0 .cse14) 4294967296) 4294967296)))) (not (< c_~j1~0 ~m~0)) (< .cse11 ~m~0))) (< .cse7 (+ c_~k2~0 .cse10 1)) (= (mod (+ 4294967295 c_~k1~0) 4294967296) 0)))) is different from false