./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread/lazy01.i --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_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/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_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/lazy01.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/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_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/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 b5d87933b05ad3566f9bc28daac5c0aeceb8a45433a1cac3d51a8d34f7f284f0 --- 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 19:15:25,849 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 19:15:25,851 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 19:15:25,864 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 19:15:25,864 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 19:15:25,865 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 19:15:25,866 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 19:15:25,867 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 19:15:25,868 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 19:15:25,869 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 19:15:25,869 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 19:15:25,870 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 19:15:25,870 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 19:15:25,871 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 19:15:25,872 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 19:15:25,873 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 19:15:25,873 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 19:15:25,874 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 19:15:25,875 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 19:15:25,876 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 19:15:25,877 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 19:15:25,878 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 19:15:25,879 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 19:15:25,879 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 19:15:25,881 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 19:15:25,882 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 19:15:25,882 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 19:15:25,882 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 19:15:25,883 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 19:15:25,884 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 19:15:25,884 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 19:15:25,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 19:15:25,885 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 19:15:25,886 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 19:15:25,886 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 19:15:25,886 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 19:15:25,887 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 19:15:25,887 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 19:15:25,887 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 19:15:25,888 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 19:15:25,888 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 19:15:25,889 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 19:15:25,903 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 19:15:25,903 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 19:15:25,903 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 19:15:25,904 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 19:15:25,904 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 19:15:25,904 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 19:15:25,905 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 19:15:25,905 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 19:15:25,905 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 19:15:25,905 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 19:15:25,905 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 19:15:25,906 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 19:15:25,906 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 19:15:25,906 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 19:15:25,906 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 19:15:25,906 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 19:15:25,906 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 19:15:25,906 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 19:15:25,907 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 19:15:25,907 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 19:15:25,907 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 19:15:25,907 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 19:15:25,907 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 19:15:25,907 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 19:15:25,908 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 19:15:25,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:15:25,908 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 19:15:25,908 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 19:15:25,908 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 19:15:25,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 19:15:25,909 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 19:15:25,909 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 19:15:25,909 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 19:15:25,909 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 19:15:25,909 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_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5d87933b05ad3566f9bc28daac5c0aeceb8a45433a1cac3d51a8d34f7f284f0 [2022-12-13 19:15:26,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 19:15:26,085 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 19:15:26,087 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 19:15:26,088 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 19:15:26,088 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 19:15:26,089 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread/lazy01.i [2022-12-13 19:15:28,656 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 19:15:28,822 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 19:15:28,822 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/sv-benchmarks/c/pthread/lazy01.i [2022-12-13 19:15:28,830 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/data/c9e983f90/120cdf45bd02481e9f0669a2bbfe4a1b/FLAG1b4137c66 [2022-12-13 19:15:28,840 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/data/c9e983f90/120cdf45bd02481e9f0669a2bbfe4a1b [2022-12-13 19:15:28,842 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 19:15:28,843 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 19:15:28,844 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 19:15:28,844 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 19:15:28,847 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 19:15:28,847 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:15:28" (1/1) ... [2022-12-13 19:15:28,848 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@312e905e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:15:28, skipping insertion in model container [2022-12-13 19:15:28,848 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:15:28" (1/1) ... [2022-12-13 19:15:28,853 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 19:15:28,876 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 19:15:29,079 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_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/sv-benchmarks/c/pthread/lazy01.i[31042,31055] [2022-12-13 19:15:29,086 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:15:29,095 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 19:15:29,120 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_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/sv-benchmarks/c/pthread/lazy01.i[31042,31055] [2022-12-13 19:15:29,123 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:15:29,145 INFO L208 MainTranslator]: Completed translation [2022-12-13 19:15:29,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:15:29 WrapperNode [2022-12-13 19:15:29,146 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 19:15:29,146 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 19:15:29,146 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 19:15:29,146 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 19:15:29,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:15:29" (1/1) ... [2022-12-13 19:15:29,161 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:15:29" (1/1) ... [2022-12-13 19:15:29,175 INFO L138 Inliner]: procedures = 169, calls = 33, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 62 [2022-12-13 19:15:29,175 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 19:15:29,175 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 19:15:29,175 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 19:15:29,175 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 19:15:29,182 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:15:29" (1/1) ... [2022-12-13 19:15:29,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:15:29" (1/1) ... [2022-12-13 19:15:29,184 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:15:29" (1/1) ... [2022-12-13 19:15:29,184 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:15:29" (1/1) ... [2022-12-13 19:15:29,187 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:15:29" (1/1) ... [2022-12-13 19:15:29,188 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:15:29" (1/1) ... [2022-12-13 19:15:29,189 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:15:29" (1/1) ... [2022-12-13 19:15:29,190 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:15:29" (1/1) ... [2022-12-13 19:15:29,192 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 19:15:29,192 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 19:15:29,193 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 19:15:29,193 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 19:15:29,193 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:15:29" (1/1) ... [2022-12-13 19:15:29,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:15:29,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:15:29,219 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 19:15:29,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 19:15:29,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 19:15:29,252 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 19:15:29,252 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 19:15:29,252 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 19:15:29,252 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 19:15:29,252 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 19:15:29,253 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 19:15:29,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 19:15:29,253 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 19:15:29,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 19:15:29,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 19:15:29,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 19:15:29,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 19:15:29,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 19:15:29,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 19:15:29,255 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 19:15:29,344 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 19:15:29,346 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 19:15:29,564 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 19:15:29,572 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 19:15:29,572 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 19:15:29,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:15:29 BoogieIcfgContainer [2022-12-13 19:15:29,575 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 19:15:29,577 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 19:15:29,578 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 19:15:29,581 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 19:15:29,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 07:15:28" (1/3) ... [2022-12-13 19:15:29,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71bdeb64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:15:29, skipping insertion in model container [2022-12-13 19:15:29,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:15:29" (2/3) ... [2022-12-13 19:15:29,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71bdeb64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:15:29, skipping insertion in model container [2022-12-13 19:15:29,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:15:29" (3/3) ... [2022-12-13 19:15:29,584 INFO L112 eAbstractionObserver]: Analyzing ICFG lazy01.i [2022-12-13 19:15:29,599 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 19:15:29,599 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-12-13 19:15:29,599 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 19:15:29,668 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 19:15:29,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 107 transitions, 238 flow [2022-12-13 19:15:29,746 INFO L130 PetriNetUnfolder]: 1/104 cut-off events. [2022-12-13 19:15:29,746 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 19:15:29,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 104 events. 1/104 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 112 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2022-12-13 19:15:29,750 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 107 transitions, 238 flow [2022-12-13 19:15:29,754 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 108 places, 99 transitions, 216 flow [2022-12-13 19:15:29,757 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 19:15:29,767 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 108 places, 99 transitions, 216 flow [2022-12-13 19:15:29,770 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 108 places, 99 transitions, 216 flow [2022-12-13 19:15:29,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 99 transitions, 216 flow [2022-12-13 19:15:29,800 INFO L130 PetriNetUnfolder]: 1/99 cut-off events. [2022-12-13 19:15:29,801 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 19:15:29,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 99 events. 1/99 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 112 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2022-12-13 19:15:29,803 INFO L119 LiptonReduction]: Number of co-enabled transitions 1438 [2022-12-13 19:15:33,183 INFO L134 LiptonReduction]: Checked pairs total: 4131 [2022-12-13 19:15:33,184 INFO L136 LiptonReduction]: Total number of compositions: 89 [2022-12-13 19:15:33,194 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 19:15:33,198 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;@7d2958cd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 19:15:33,198 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-12-13 19:15:33,199 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2022-12-13 19:15:33,199 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 19:15:33,200 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:15:33,200 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 19:15:33,200 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-12-13 19:15:33,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:15:33,204 INFO L85 PathProgramCache]: Analyzing trace with hash 369, now seen corresponding path program 1 times [2022-12-13 19:15:33,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:15:33,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342441219] [2022-12-13 19:15:33,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:15:33,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:15:33,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:15:33,283 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 19:15:33,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:15:33,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342441219] [2022-12-13 19:15:33,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342441219] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:15:33,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:15:33,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 19:15:33,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400777150] [2022-12-13 19:15:33,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:15:33,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 19:15:33,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:15:33,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 19:15:33,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 19:15:33,308 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 196 [2022-12-13 19:15:33,310 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 94 flow. Second operand has 2 states, 2 states have (on average 99.5) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 0 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 19:15:33,310 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:15:33,310 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 196 [2022-12-13 19:15:33,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:15:33,442 INFO L130 PetriNetUnfolder]: 599/976 cut-off events. [2022-12-13 19:15:33,442 INFO L131 PetriNetUnfolder]: For 55/55 co-relation queries the response was YES. [2022-12-13 19:15:33,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1994 conditions, 976 events. 599/976 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4680 event pairs, 599 based on Foata normal form. 52/737 useless extension candidates. Maximal degree in co-relation 1506. Up to 963 conditions per place. [2022-12-13 19:15:33,449 INFO L137 encePairwiseOnDemand]: 193/196 looper letters, 32 selfloop transitions, 0 changer transitions 0/35 dead transitions. [2022-12-13 19:15:33,449 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 35 transitions, 152 flow [2022-12-13 19:15:33,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 19:15:33,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 19:15:33,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 233 transitions. [2022-12-13 19:15:33,458 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5943877551020408 [2022-12-13 19:15:33,459 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 233 transitions. [2022-12-13 19:15:33,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 233 transitions. [2022-12-13 19:15:33,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:15:33,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 233 transitions. [2022-12-13 19:15:33,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 116.5) internal successors, (233), 2 states have internal predecessors, (233), 0 states have call successors, (0), 0 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 19:15:33,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 196.0) internal successors, (588), 3 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 19:15:33,467 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 196.0) internal successors, (588), 3 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 19:15:33,469 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 94 flow. Second operand 2 states and 233 transitions. [2022-12-13 19:15:33,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 35 transitions, 152 flow [2022-12-13 19:15:33,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 35 transitions, 140 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-13 19:15:33,472 INFO L231 Difference]: Finished difference. Result has 40 places, 35 transitions, 76 flow [2022-12-13 19:15:33,474 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=76, PETRI_PLACES=40, PETRI_TRANSITIONS=35} [2022-12-13 19:15:33,477 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, -7 predicate places. [2022-12-13 19:15:33,477 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 35 transitions, 76 flow [2022-12-13 19:15:33,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 99.5) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 0 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 19:15:33,477 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:15:33,477 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 19:15:33,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 19:15:33,477 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-12-13 19:15:33,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:15:33,478 INFO L85 PathProgramCache]: Analyzing trace with hash 361568, now seen corresponding path program 1 times [2022-12-13 19:15:33,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:15:33,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333714919] [2022-12-13 19:15:33,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:15:33,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:15:33,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:15:33,616 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 19:15:33,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:15:33,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333714919] [2022-12-13 19:15:33,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333714919] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:15:33,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:15:33,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:15:33,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561735912] [2022-12-13 19:15:33,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:15:33,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:15:33,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:15:33,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:15:33,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:15:33,663 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 196 [2022-12-13 19:15:33,664 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 35 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 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 19:15:33,664 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:15:33,664 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 196 [2022-12-13 19:15:33,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:15:33,770 INFO L130 PetriNetUnfolder]: 570/926 cut-off events. [2022-12-13 19:15:33,770 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-12-13 19:15:33,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1854 conditions, 926 events. 570/926 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4404 event pairs, 570 based on Foata normal form. 0/663 useless extension candidates. Maximal degree in co-relation 1851. Up to 911 conditions per place. [2022-12-13 19:15:33,776 INFO L137 encePairwiseOnDemand]: 192/196 looper letters, 28 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2022-12-13 19:15:33,776 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 33 transitions, 132 flow [2022-12-13 19:15:33,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:15:33,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:15:33,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 299 transitions. [2022-12-13 19:15:33,779 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5085034013605442 [2022-12-13 19:15:33,779 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 299 transitions. [2022-12-13 19:15:33,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 299 transitions. [2022-12-13 19:15:33,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:15:33,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 299 transitions. [2022-12-13 19:15:33,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:15:33,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 0 states have call successors, (0), 0 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 19:15:33,784 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 0 states have call successors, (0), 0 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 19:15:33,784 INFO L175 Difference]: Start difference. First operand has 40 places, 35 transitions, 76 flow. Second operand 3 states and 299 transitions. [2022-12-13 19:15:33,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 33 transitions, 132 flow [2022-12-13 19:15:33,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 33 transitions, 132 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 19:15:33,786 INFO L231 Difference]: Finished difference. Result has 40 places, 33 transitions, 76 flow [2022-12-13 19:15:33,786 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=40, PETRI_TRANSITIONS=33} [2022-12-13 19:15:33,786 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, -7 predicate places. [2022-12-13 19:15:33,786 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 33 transitions, 76 flow [2022-12-13 19:15:33,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 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 19:15:33,787 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:15:33,787 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 19:15:33,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 19:15:33,787 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-12-13 19:15:33,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:15:33,788 INFO L85 PathProgramCache]: Analyzing trace with hash 361567, now seen corresponding path program 1 times [2022-12-13 19:15:33,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:15:33,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605478030] [2022-12-13 19:15:33,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:15:33,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:15:33,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:15:33,928 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 19:15:33,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:15:33,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605478030] [2022-12-13 19:15:33,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605478030] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:15:33,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:15:33,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:15:33,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147255025] [2022-12-13 19:15:33,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:15:33,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:15:33,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:15:33,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:15:33,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:15:33,958 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 196 [2022-12-13 19:15:33,959 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 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 19:15:33,959 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:15:33,959 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 196 [2022-12-13 19:15:33,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:15:34,047 INFO L130 PetriNetUnfolder]: 541/876 cut-off events. [2022-12-13 19:15:34,047 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-12-13 19:15:34,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1757 conditions, 876 events. 541/876 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4141 event pairs, 541 based on Foata normal form. 0/641 useless extension candidates. Maximal degree in co-relation 1753. Up to 861 conditions per place. [2022-12-13 19:15:34,053 INFO L137 encePairwiseOnDemand]: 192/196 looper letters, 26 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2022-12-13 19:15:34,053 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 31 transitions, 128 flow [2022-12-13 19:15:34,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:15:34,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:15:34,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 312 transitions. [2022-12-13 19:15:34,055 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2022-12-13 19:15:34,055 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 312 transitions. [2022-12-13 19:15:34,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 312 transitions. [2022-12-13 19:15:34,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:15:34,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 312 transitions. [2022-12-13 19:15:34,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:15:34,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 0 states have call successors, (0), 0 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 19:15:34,059 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 0 states have call successors, (0), 0 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 19:15:34,059 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 76 flow. Second operand 3 states and 312 transitions. [2022-12-13 19:15:34,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 31 transitions, 128 flow [2022-12-13 19:15:34,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 31 transitions, 124 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 19:15:34,060 INFO L231 Difference]: Finished difference. Result has 38 places, 31 transitions, 72 flow [2022-12-13 19:15:34,060 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=38, PETRI_TRANSITIONS=31} [2022-12-13 19:15:34,061 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, -9 predicate places. [2022-12-13 19:15:34,061 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 31 transitions, 72 flow [2022-12-13 19:15:34,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 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 19:15:34,062 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:15:34,062 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 19:15:34,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 19:15:34,062 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-12-13 19:15:34,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:15:34,063 INFO L85 PathProgramCache]: Analyzing trace with hash 347472788, now seen corresponding path program 1 times [2022-12-13 19:15:34,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:15:34,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031005108] [2022-12-13 19:15:34,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:15:34,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:15:34,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:15:34,125 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 19:15:34,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:15:34,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031005108] [2022-12-13 19:15:34,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031005108] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:15:34,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:15:34,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:15:34,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133558318] [2022-12-13 19:15:34,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:15:34,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:15:34,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:15:34,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:15:34,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:15:34,168 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 196 [2022-12-13 19:15:34,169 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 31 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 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 19:15:34,169 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:15:34,169 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 196 [2022-12-13 19:15:34,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:15:34,275 INFO L130 PetriNetUnfolder]: 524/841 cut-off events. [2022-12-13 19:15:34,275 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-12-13 19:15:34,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1690 conditions, 841 events. 524/841 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3944 event pairs, 524 based on Foata normal form. 0/623 useless extension candidates. Maximal degree in co-relation 1686. Up to 829 conditions per place. [2022-12-13 19:15:34,280 INFO L137 encePairwiseOnDemand]: 192/196 looper letters, 24 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2022-12-13 19:15:34,280 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 29 transitions, 120 flow [2022-12-13 19:15:34,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:15:34,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:15:34,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 295 transitions. [2022-12-13 19:15:34,282 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5017006802721088 [2022-12-13 19:15:34,282 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 295 transitions. [2022-12-13 19:15:34,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 295 transitions. [2022-12-13 19:15:34,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:15:34,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 295 transitions. [2022-12-13 19:15:34,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:15:34,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 0 states have call successors, (0), 0 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 19:15:34,286 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 0 states have call successors, (0), 0 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 19:15:34,286 INFO L175 Difference]: Start difference. First operand has 38 places, 31 transitions, 72 flow. Second operand 3 states and 295 transitions. [2022-12-13 19:15:34,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 29 transitions, 120 flow [2022-12-13 19:15:34,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 29 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 19:15:34,287 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 68 flow [2022-12-13 19:15:34,288 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2022-12-13 19:15:34,288 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, -11 predicate places. [2022-12-13 19:15:34,288 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 68 flow [2022-12-13 19:15:34,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 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 19:15:34,289 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:15:34,289 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 19:15:34,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 19:15:34,289 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-12-13 19:15:34,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:15:34,290 INFO L85 PathProgramCache]: Analyzing trace with hash 347472787, now seen corresponding path program 1 times [2022-12-13 19:15:34,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:15:34,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856986664] [2022-12-13 19:15:34,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:15:34,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:15:34,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:15:34,360 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 19:15:34,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:15:34,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856986664] [2022-12-13 19:15:34,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856986664] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:15:34,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:15:34,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:15:34,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562124526] [2022-12-13 19:15:34,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:15:34,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:15:34,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:15:34,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:15:34,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:15:34,391 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 196 [2022-12-13 19:15:34,391 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 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 19:15:34,391 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:15:34,391 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 196 [2022-12-13 19:15:34,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:15:34,479 INFO L130 PetriNetUnfolder]: 507/806 cut-off events. [2022-12-13 19:15:34,479 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-12-13 19:15:34,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1623 conditions, 806 events. 507/806 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3751 event pairs, 507 based on Foata normal form. 0/605 useless extension candidates. Maximal degree in co-relation 1619. Up to 797 conditions per place. [2022-12-13 19:15:34,483 INFO L137 encePairwiseOnDemand]: 192/196 looper letters, 22 selfloop transitions, 2 changer transitions 0/27 dead transitions. [2022-12-13 19:15:34,483 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 27 transitions, 112 flow [2022-12-13 19:15:34,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:15:34,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:15:34,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 308 transitions. [2022-12-13 19:15:34,485 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2022-12-13 19:15:34,485 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 308 transitions. [2022-12-13 19:15:34,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 308 transitions. [2022-12-13 19:15:34,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:15:34,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 308 transitions. [2022-12-13 19:15:34,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 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 19:15:34,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 0 states have call successors, (0), 0 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 19:15:34,488 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 0 states have call successors, (0), 0 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 19:15:34,488 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 68 flow. Second operand 3 states and 308 transitions. [2022-12-13 19:15:34,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 27 transitions, 112 flow [2022-12-13 19:15:34,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 27 transitions, 108 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 19:15:34,489 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 64 flow [2022-12-13 19:15:34,489 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2022-12-13 19:15:34,490 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, -13 predicate places. [2022-12-13 19:15:34,490 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 64 flow [2022-12-13 19:15:34,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 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 19:15:34,491 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:15:34,491 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:15:34,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 19:15:34,491 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-12-13 19:15:34,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:15:34,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1086090896, now seen corresponding path program 1 times [2022-12-13 19:15:34,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:15:34,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393785485] [2022-12-13 19:15:34,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:15:34,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:15:34,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:15:34,608 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 19:15:34,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:15:34,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393785485] [2022-12-13 19:15:34,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393785485] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:15:34,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:15:34,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:15:34,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303935783] [2022-12-13 19:15:34,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:15:34,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:15:34,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:15:34,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:15:34,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:15:34,664 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 196 [2022-12-13 19:15:34,665 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 64 flow. Second operand has 4 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 0 states have call successors, (0), 0 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 19:15:34,665 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:15:34,666 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 196 [2022-12-13 19:15:34,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:15:34,742 INFO L130 PetriNetUnfolder]: 390/635 cut-off events. [2022-12-13 19:15:34,743 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-12-13 19:15:34,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1281 conditions, 635 events. 390/635 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2838 event pairs, 390 based on Foata normal form. 0/506 useless extension candidates. Maximal degree in co-relation 1277. Up to 626 conditions per place. [2022-12-13 19:15:34,745 INFO L137 encePairwiseOnDemand]: 193/196 looper letters, 21 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2022-12-13 19:15:34,745 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 26 transitions, 108 flow [2022-12-13 19:15:34,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:15:34,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:15:34,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 300 transitions. [2022-12-13 19:15:34,746 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5102040816326531 [2022-12-13 19:15:34,746 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 300 transitions. [2022-12-13 19:15:34,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 300 transitions. [2022-12-13 19:15:34,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:15:34,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 300 transitions. [2022-12-13 19:15:34,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 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 19:15:34,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 0 states have call successors, (0), 0 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 19:15:34,748 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 0 states have call successors, (0), 0 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 19:15:34,748 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 64 flow. Second operand 3 states and 300 transitions. [2022-12-13 19:15:34,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 26 transitions, 108 flow [2022-12-13 19:15:34,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 26 transitions, 104 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 19:15:34,749 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 62 flow [2022-12-13 19:15:34,749 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2022-12-13 19:15:34,749 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, -14 predicate places. [2022-12-13 19:15:34,749 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 62 flow [2022-12-13 19:15:34,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 0 states have call successors, (0), 0 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 19:15:34,750 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:15:34,750 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:15:34,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 19:15:34,750 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-12-13 19:15:34,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:15:34,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1086090898, now seen corresponding path program 1 times [2022-12-13 19:15:34,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:15:34,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64498185] [2022-12-13 19:15:34,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:15:34,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:15:34,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:15:34,827 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 19:15:34,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:15:34,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64498185] [2022-12-13 19:15:34,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64498185] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:15:34,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:15:34,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:15:34,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189910338] [2022-12-13 19:15:34,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:15:34,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:15:34,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:15:34,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:15:34,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:15:34,902 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 196 [2022-12-13 19:15:34,903 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 62 flow. Second operand has 5 states, 5 states have (on average 82.4) internal successors, (412), 5 states have internal predecessors, (412), 0 states have call successors, (0), 0 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 19:15:34,903 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:15:34,903 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 196 [2022-12-13 19:15:34,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:15:34,965 INFO L130 PetriNetUnfolder]: 273/464 cut-off events. [2022-12-13 19:15:34,965 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-12-13 19:15:34,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 939 conditions, 464 events. 273/464 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1943 event pairs, 273 based on Foata normal form. 0/407 useless extension candidates. Maximal degree in co-relation 935. Up to 455 conditions per place. [2022-12-13 19:15:34,968 INFO L137 encePairwiseOnDemand]: 193/196 looper letters, 19 selfloop transitions, 2 changer transitions 1/25 dead transitions. [2022-12-13 19:15:34,968 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 25 transitions, 104 flow [2022-12-13 19:15:34,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:15:34,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:15:34,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 266 transitions. [2022-12-13 19:15:34,969 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2022-12-13 19:15:34,969 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 266 transitions. [2022-12-13 19:15:34,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 266 transitions. [2022-12-13 19:15:34,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:15:34,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 266 transitions. [2022-12-13 19:15:34,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 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 19:15:34,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 0 states have call successors, (0), 0 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 19:15:34,970 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 0 states have call successors, (0), 0 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 19:15:34,970 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 62 flow. Second operand 3 states and 266 transitions. [2022-12-13 19:15:34,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 25 transitions, 104 flow [2022-12-13 19:15:34,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 25 transitions, 100 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 19:15:34,971 INFO L231 Difference]: Finished difference. Result has 32 places, 24 transitions, 58 flow [2022-12-13 19:15:34,971 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=32, PETRI_TRANSITIONS=24} [2022-12-13 19:15:34,972 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, -15 predicate places. [2022-12-13 19:15:34,972 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 58 flow [2022-12-13 19:15:34,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 82.4) internal successors, (412), 5 states have internal predecessors, (412), 0 states have call successors, (0), 0 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 19:15:34,972 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:15:34,972 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:15:34,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 19:15:34,972 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err0ASSERT_VIOLATIONMEMORY_LEAK === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-12-13 19:15:34,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:15:34,973 INFO L85 PathProgramCache]: Analyzing trace with hash 690919480, now seen corresponding path program 1 times [2022-12-13 19:15:34,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:15:34,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419617602] [2022-12-13 19:15:34,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:15:34,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:15:34,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:15:34,998 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 19:15:34,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:15:34,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419617602] [2022-12-13 19:15:34,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419617602] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:15:34,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:15:34,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:15:34,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426172027] [2022-12-13 19:15:34,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:15:34,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:15:34,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:15:34,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:15:35,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:15:35,007 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 196 [2022-12-13 19:15:35,007 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 24 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:15:35,007 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:15:35,007 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 196 [2022-12-13 19:15:35,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:15:35,086 INFO L130 PetriNetUnfolder]: 393/639 cut-off events. [2022-12-13 19:15:35,087 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-12-13 19:15:35,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1304 conditions, 639 events. 393/639 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2452 event pairs, 121 based on Foata normal form. 0/604 useless extension candidates. Maximal degree in co-relation 1300. Up to 543 conditions per place. [2022-12-13 19:15:35,091 INFO L137 encePairwiseOnDemand]: 192/196 looper letters, 32 selfloop transitions, 3 changer transitions 0/36 dead transitions. [2022-12-13 19:15:35,091 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 36 transitions, 154 flow [2022-12-13 19:15:35,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:15:35,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:15:35,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 321 transitions. [2022-12-13 19:15:35,093 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5459183673469388 [2022-12-13 19:15:35,093 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 321 transitions. [2022-12-13 19:15:35,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 321 transitions. [2022-12-13 19:15:35,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:15:35,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 321 transitions. [2022-12-13 19:15:35,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 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 19:15:35,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 0 states have call successors, (0), 0 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 19:15:35,096 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 0 states have call successors, (0), 0 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 19:15:35,096 INFO L175 Difference]: Start difference. First operand has 32 places, 24 transitions, 58 flow. Second operand 3 states and 321 transitions. [2022-12-13 19:15:35,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 36 transitions, 154 flow [2022-12-13 19:15:35,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 36 transitions, 150 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 19:15:35,097 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 73 flow [2022-12-13 19:15:35,097 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2022-12-13 19:15:35,097 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, -15 predicate places. [2022-12-13 19:15:35,097 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 73 flow [2022-12-13 19:15:35,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:15:35,098 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:15:35,098 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:15:35,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 19:15:35,098 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err0ASSERT_VIOLATIONMEMORY_LEAK === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-12-13 19:15:35,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:15:35,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1700566376, now seen corresponding path program 1 times [2022-12-13 19:15:35,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:15:35,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055093524] [2022-12-13 19:15:35,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:15:35,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:15:35,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:15:35,165 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 19:15:35,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:15:35,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055093524] [2022-12-13 19:15:35,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055093524] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:15:35,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:15:35,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:15:35,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90444602] [2022-12-13 19:15:35,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:15:35,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:15:35,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:15:35,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:15:35,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:15:35,180 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 196 [2022-12-13 19:15:35,181 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 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 19:15:35,181 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:15:35,181 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 196 [2022-12-13 19:15:35,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:15:35,238 INFO L130 PetriNetUnfolder]: 88/245 cut-off events. [2022-12-13 19:15:35,238 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-12-13 19:15:35,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 520 conditions, 245 events. 88/245 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1064 event pairs, 31 based on Foata normal form. 48/293 useless extension candidates. Maximal degree in co-relation 515. Up to 121 conditions per place. [2022-12-13 19:15:35,240 INFO L137 encePairwiseOnDemand]: 190/196 looper letters, 24 selfloop transitions, 6 changer transitions 0/35 dead transitions. [2022-12-13 19:15:35,240 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 155 flow [2022-12-13 19:15:35,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:15:35,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:15:35,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 306 transitions. [2022-12-13 19:15:35,241 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5204081632653061 [2022-12-13 19:15:35,241 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 306 transitions. [2022-12-13 19:15:35,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 306 transitions. [2022-12-13 19:15:35,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:15:35,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 306 transitions. [2022-12-13 19:15:35,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 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 19:15:35,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 0 states have call successors, (0), 0 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 19:15:35,244 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 0 states have call successors, (0), 0 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 19:15:35,244 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 73 flow. Second operand 3 states and 306 transitions. [2022-12-13 19:15:35,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 155 flow [2022-12-13 19:15:35,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 152 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:15:35,246 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 82 flow [2022-12-13 19:15:35,246 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2022-12-13 19:15:35,246 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, -14 predicate places. [2022-12-13 19:15:35,247 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 82 flow [2022-12-13 19:15:35,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 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 19:15:35,247 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:15:35,247 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:15:35,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 19:15:35,247 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err0ASSERT_VIOLATIONMEMORY_LEAK === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-12-13 19:15:35,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:15:35,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1194942905, now seen corresponding path program 1 times [2022-12-13 19:15:35,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:15:35,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895762474] [2022-12-13 19:15:35,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:15:35,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:15:35,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:15:35,281 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 19:15:35,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:15:35,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895762474] [2022-12-13 19:15:35,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895762474] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:15:35,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:15:35,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:15:35,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320155939] [2022-12-13 19:15:35,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:15:35,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:15:35,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:15:35,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:15:35,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:15:35,289 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 196 [2022-12-13 19:15:35,289 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 82 flow. Second operand has 4 states, 4 states have (on average 96.75) internal successors, (387), 4 states have internal predecessors, (387), 0 states have call successors, (0), 0 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 19:15:35,289 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:15:35,290 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 196 [2022-12-13 19:15:35,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:15:35,365 INFO L130 PetriNetUnfolder]: 114/280 cut-off events. [2022-12-13 19:15:35,366 INFO L131 PetriNetUnfolder]: For 66/66 co-relation queries the response was YES. [2022-12-13 19:15:35,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 710 conditions, 280 events. 114/280 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1079 event pairs, 37 based on Foata normal form. 2/281 useless extension candidates. Maximal degree in co-relation 705. Up to 149 conditions per place. [2022-12-13 19:15:35,367 INFO L137 encePairwiseOnDemand]: 191/196 looper letters, 43 selfloop transitions, 6 changer transitions 0/50 dead transitions. [2022-12-13 19:15:35,368 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 50 transitions, 250 flow [2022-12-13 19:15:35,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:15:35,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 19:15:35,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 426 transitions. [2022-12-13 19:15:35,369 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5433673469387755 [2022-12-13 19:15:35,369 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 426 transitions. [2022-12-13 19:15:35,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 426 transitions. [2022-12-13 19:15:35,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:15:35,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 426 transitions. [2022-12-13 19:15:35,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 106.5) internal successors, (426), 4 states have internal predecessors, (426), 0 states have call successors, (0), 0 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 19:15:35,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 196.0) internal successors, (980), 5 states have internal predecessors, (980), 0 states have call successors, (0), 0 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 19:15:35,371 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 196.0) internal successors, (980), 5 states have internal predecessors, (980), 0 states have call successors, (0), 0 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 19:15:35,371 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 82 flow. Second operand 4 states and 426 transitions. [2022-12-13 19:15:35,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 50 transitions, 250 flow [2022-12-13 19:15:35,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 50 transitions, 237 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:15:35,372 INFO L231 Difference]: Finished difference. Result has 37 places, 28 transitions, 109 flow [2022-12-13 19:15:35,372 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=109, PETRI_PLACES=37, PETRI_TRANSITIONS=28} [2022-12-13 19:15:35,373 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, -10 predicate places. [2022-12-13 19:15:35,373 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 28 transitions, 109 flow [2022-12-13 19:15:35,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 96.75) internal successors, (387), 4 states have internal predecessors, (387), 0 states have call successors, (0), 0 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 19:15:35,373 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:15:35,373 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:15:35,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 19:15:35,373 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err0ASSERT_VIOLATIONMEMORY_LEAK === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-12-13 19:15:35,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:15:35,373 INFO L85 PathProgramCache]: Analyzing trace with hash 708339742, now seen corresponding path program 1 times [2022-12-13 19:15:35,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:15:35,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825025300] [2022-12-13 19:15:35,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:15:35,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:15:35,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:15:35,414 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 19:15:35,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:15:35,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825025300] [2022-12-13 19:15:35,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825025300] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:15:35,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:15:35,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:15:35,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050464064] [2022-12-13 19:15:35,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:15:35,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:15:35,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:15:35,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:15:35,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:15:35,425 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 196 [2022-12-13 19:15:35,426 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 28 transitions, 109 flow. Second operand has 5 states, 5 states have (on average 95.4) internal successors, (477), 5 states have internal predecessors, (477), 0 states have call successors, (0), 0 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 19:15:35,426 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:15:35,426 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 196 [2022-12-13 19:15:35,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:15:35,519 INFO L130 PetriNetUnfolder]: 121/288 cut-off events. [2022-12-13 19:15:35,519 INFO L131 PetriNetUnfolder]: For 167/167 co-relation queries the response was YES. [2022-12-13 19:15:35,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 764 conditions, 288 events. 121/288 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1105 event pairs, 33 based on Foata normal form. 4/292 useless extension candidates. Maximal degree in co-relation 757. Up to 157 conditions per place. [2022-12-13 19:15:35,521 INFO L137 encePairwiseOnDemand]: 190/196 looper letters, 51 selfloop transitions, 7 changer transitions 0/58 dead transitions. [2022-12-13 19:15:35,521 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 58 transitions, 306 flow [2022-12-13 19:15:35,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:15:35,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 19:15:35,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 615 transitions. [2022-12-13 19:15:35,523 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5229591836734694 [2022-12-13 19:15:35,523 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 615 transitions. [2022-12-13 19:15:35,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 615 transitions. [2022-12-13 19:15:35,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:15:35,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 615 transitions. [2022-12-13 19:15:35,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 102.5) internal successors, (615), 6 states have internal predecessors, (615), 0 states have call successors, (0), 0 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 19:15:35,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 196.0) internal successors, (1372), 7 states have internal predecessors, (1372), 0 states have call successors, (0), 0 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 19:15:35,528 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 196.0) internal successors, (1372), 7 states have internal predecessors, (1372), 0 states have call successors, (0), 0 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 19:15:35,528 INFO L175 Difference]: Start difference. First operand has 37 places, 28 transitions, 109 flow. Second operand 6 states and 615 transitions. [2022-12-13 19:15:35,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 58 transitions, 306 flow [2022-12-13 19:15:35,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 58 transitions, 299 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-12-13 19:15:35,530 INFO L231 Difference]: Finished difference. Result has 44 places, 30 transitions, 135 flow [2022-12-13 19:15:35,530 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=135, PETRI_PLACES=44, PETRI_TRANSITIONS=30} [2022-12-13 19:15:35,531 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, -3 predicate places. [2022-12-13 19:15:35,531 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 30 transitions, 135 flow [2022-12-13 19:15:35,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 95.4) internal successors, (477), 5 states have internal predecessors, (477), 0 states have call successors, (0), 0 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 19:15:35,531 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:15:35,531 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:15:35,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 19:15:35,532 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err0ASSERT_VIOLATIONMEMORY_LEAK === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-12-13 19:15:35,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:15:35,532 INFO L85 PathProgramCache]: Analyzing trace with hash 178983875, now seen corresponding path program 1 times [2022-12-13 19:15:35,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:15:35,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933023786] [2022-12-13 19:15:35,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:15:35,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:15:35,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:15:35,549 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:15:35,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:15:35,582 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:15:35,582 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 19:15:35,583 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thread3Err0ASSERT_VIOLATIONMEMORY_LEAK (17 of 18 remaining) [2022-12-13 19:15:35,585 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0ASSERT_VIOLATIONMEMORY_LEAK (16 of 18 remaining) [2022-12-13 19:15:35,585 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 18 remaining) [2022-12-13 19:15:35,585 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 18 remaining) [2022-12-13 19:15:35,585 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 18 remaining) [2022-12-13 19:15:35,585 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 18 remaining) [2022-12-13 19:15:35,585 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 18 remaining) [2022-12-13 19:15:35,586 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 18 remaining) [2022-12-13 19:15:35,586 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 18 remaining) [2022-12-13 19:15:35,586 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 18 remaining) [2022-12-13 19:15:35,586 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 18 remaining) [2022-12-13 19:15:35,586 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 18 remaining) [2022-12-13 19:15:35,586 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 18 remaining) [2022-12-13 19:15:35,586 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 18 remaining) [2022-12-13 19:15:35,586 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (3 of 18 remaining) [2022-12-13 19:15:35,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 18 remaining) [2022-12-13 19:15:35,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 18 remaining) [2022-12-13 19:15:35,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 18 remaining) [2022-12-13 19:15:35,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 19:15:35,587 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:15:35,593 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 19:15:35,593 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 19:15:35,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 07:15:35 BasicIcfg [2022-12-13 19:15:35,618 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 19:15:35,618 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 19:15:35,618 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 19:15:35,618 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 19:15:35,619 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:15:29" (3/4) ... [2022-12-13 19:15:35,621 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 19:15:35,622 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 19:15:35,622 INFO L158 Benchmark]: Toolchain (without parser) took 6778.67ms. Allocated memory was 140.5MB in the beginning and 216.0MB in the end (delta: 75.5MB). Free memory was 96.3MB in the beginning and 66.3MB in the end (delta: 30.0MB). Peak memory consumption was 106.9MB. Max. memory is 16.1GB. [2022-12-13 19:15:35,622 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 140.5MB. Free memory is still 81.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 19:15:35,622 INFO L158 Benchmark]: CACSL2BoogieTranslator took 301.60ms. Allocated memory is still 140.5MB. Free memory was 95.9MB in the beginning and 76.6MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-13 19:15:35,623 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.65ms. Allocated memory is still 140.5MB. Free memory was 76.6MB in the beginning and 74.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 19:15:35,623 INFO L158 Benchmark]: Boogie Preprocessor took 16.71ms. Allocated memory is still 140.5MB. Free memory was 74.5MB in the beginning and 73.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 19:15:35,623 INFO L158 Benchmark]: RCFGBuilder took 382.42ms. Allocated memory was 140.5MB in the beginning and 216.0MB in the end (delta: 75.5MB). Free memory was 73.2MB in the beginning and 182.9MB in the end (delta: -109.7MB). Peak memory consumption was 20.8MB. Max. memory is 16.1GB. [2022-12-13 19:15:35,623 INFO L158 Benchmark]: TraceAbstraction took 6040.42ms. Allocated memory is still 216.0MB. Free memory was 182.9MB in the beginning and 66.3MB in the end (delta: 116.6MB). Peak memory consumption was 115.5MB. Max. memory is 16.1GB. [2022-12-13 19:15:35,624 INFO L158 Benchmark]: Witness Printer took 3.38ms. Allocated memory is still 216.0MB. Free memory is still 66.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 19:15:35,625 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 140.5MB. Free memory is still 81.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 301.60ms. Allocated memory is still 140.5MB. Free memory was 95.9MB in the beginning and 76.6MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.65ms. Allocated memory is still 140.5MB. Free memory was 76.6MB in the beginning and 74.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.71ms. Allocated memory is still 140.5MB. Free memory was 74.5MB in the beginning and 73.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 382.42ms. Allocated memory was 140.5MB in the beginning and 216.0MB in the end (delta: 75.5MB). Free memory was 73.2MB in the beginning and 182.9MB in the end (delta: -109.7MB). Peak memory consumption was 20.8MB. Max. memory is 16.1GB. * TraceAbstraction took 6040.42ms. Allocated memory is still 216.0MB. Free memory was 182.9MB in the beginning and 66.3MB in the end (delta: 116.6MB). Peak memory consumption was 115.5MB. Max. memory is 16.1GB. * Witness Printer took 3.38ms. Allocated memory is still 216.0MB. Free memory is still 66.3MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.4s, 108 PlacesBefore, 47 PlacesAfterwards, 99 TransitionsBefore, 38 TransitionsAfterwards, 1438 CoEnabledTransitionPairs, 6 FixpointIterations, 41 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 0 ChoiceCompositions, 89 TotalNumberOfCompositions, 4131 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2180, independent: 2051, independent conditional: 0, independent unconditional: 2051, dependent: 129, dependent conditional: 0, dependent unconditional: 129, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 782, independent: 763, independent conditional: 0, independent unconditional: 763, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2180, independent: 1288, independent conditional: 0, independent unconditional: 1288, dependent: 110, dependent conditional: 0, dependent unconditional: 110, unknown: 782, unknown conditional: 0, unknown unconditional: 782] , Statistics on independence cache: Total cache size (in pairs): 120, Positive cache size: 108, Positive conditional cache size: 0, Positive unconditional cache size: 108, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 722]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 722. Possible FailurePath: [L702] 0 pthread_mutex_t mutex; [L703] 0 int data = 0; [L731] 0 pthread_t t1, t2, t3; [L732] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, data=0, mutex={3:0}, pthread_create(&t1, 0, thread1, 0)=-2, t1={5:0}, t2={7:0}, t3={6:0}] [L733] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, data=0, mutex={3:0}, pthread_create(&t2, 0, thread2, 0)=-1, t1={5:0}, t2={7:0}, t3={6:0}] [L734] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=0, mutex={3:0}, pthread_create(&t3, 0, thread3, 0)=0, t1={5:0}, t2={7:0}, t3={6:0}] [L707] 1 data++ [L709] 1 return 0; [L714] 2 data+=2 VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L716] 2 return 0; [L721] COND TRUE 3 data >= 3 [L722] 3 reach_error() VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 728]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 732]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 733]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 734]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 139 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.9s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 730 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 436 mSDsluCounter, 20 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14 mSDsCounter, 72 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 823 IncrementalHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 72 mSolverCounterUnsat, 6 mSDtfsCounter, 823 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=135occurred in iteration=11, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 87 NumberOfCodeBlocks, 87 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 61 ConstructedInterpolants, 0 QuantifiedInterpolants, 335 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-13 19:15:35,640 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/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_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/lazy01.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/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 b5d87933b05ad3566f9bc28daac5c0aeceb8a45433a1cac3d51a8d34f7f284f0 --- 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 19:15:37,317 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 19:15:37,319 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 19:15:37,332 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 19:15:37,332 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 19:15:37,333 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 19:15:37,334 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 19:15:37,335 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 19:15:37,336 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 19:15:37,336 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 19:15:37,337 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 19:15:37,338 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 19:15:37,338 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 19:15:37,339 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 19:15:37,339 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 19:15:37,340 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 19:15:37,341 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 19:15:37,341 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 19:15:37,343 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 19:15:37,344 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 19:15:37,345 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 19:15:37,346 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 19:15:37,347 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 19:15:37,347 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 19:15:37,349 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 19:15:37,350 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 19:15:37,350 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 19:15:37,351 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 19:15:37,351 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 19:15:37,352 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 19:15:37,352 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 19:15:37,352 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 19:15:37,353 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 19:15:37,353 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 19:15:37,359 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 19:15:37,360 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 19:15:37,360 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 19:15:37,361 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 19:15:37,361 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 19:15:37,362 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 19:15:37,363 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 19:15:37,363 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-12-13 19:15:37,387 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 19:15:37,387 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 19:15:37,388 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 19:15:37,388 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 19:15:37,389 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 19:15:37,389 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 19:15:37,389 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 19:15:37,390 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 19:15:37,390 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 19:15:37,390 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 19:15:37,390 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 19:15:37,390 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 19:15:37,391 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 19:15:37,391 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 19:15:37,391 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 19:15:37,391 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 19:15:37,391 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 19:15:37,392 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 19:15:37,392 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 19:15:37,392 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 19:15:37,392 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 19:15:37,392 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 19:15:37,393 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 19:15:37,393 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 19:15:37,393 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 19:15:37,393 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 19:15:37,393 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 19:15:37,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:15:37,394 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 19:15:37,394 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 19:15:37,394 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 19:15:37,394 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 19:15:37,395 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 19:15:37,395 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 19:15:37,395 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 19:15:37,395 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 19:15:37,395 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 19:15:37,395 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_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5d87933b05ad3566f9bc28daac5c0aeceb8a45433a1cac3d51a8d34f7f284f0 [2022-12-13 19:15:37,608 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 19:15:37,623 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 19:15:37,625 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 19:15:37,626 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 19:15:37,626 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 19:15:37,627 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread/lazy01.i [2022-12-13 19:15:40,213 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 19:15:40,365 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 19:15:40,365 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/sv-benchmarks/c/pthread/lazy01.i [2022-12-13 19:15:40,384 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/data/b5c6bca83/81f25a46948d4e0480a947dc20efcafa/FLAG0743ad953 [2022-12-13 19:15:40,397 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/data/b5c6bca83/81f25a46948d4e0480a947dc20efcafa [2022-12-13 19:15:40,399 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 19:15:40,400 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 19:15:40,401 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 19:15:40,401 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 19:15:40,404 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 19:15:40,404 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:15:40" (1/1) ... [2022-12-13 19:15:40,405 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f12a67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:15:40, skipping insertion in model container [2022-12-13 19:15:40,405 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:15:40" (1/1) ... [2022-12-13 19:15:40,412 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 19:15:40,445 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 19:15:40,691 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_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/sv-benchmarks/c/pthread/lazy01.i[31042,31055] [2022-12-13 19:15:40,701 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:15:40,717 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 19:15:40,754 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_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/sv-benchmarks/c/pthread/lazy01.i[31042,31055] [2022-12-13 19:15:40,758 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:15:40,793 INFO L208 MainTranslator]: Completed translation [2022-12-13 19:15:40,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:15:40 WrapperNode [2022-12-13 19:15:40,794 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 19:15:40,795 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 19:15:40,795 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 19:15:40,795 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 19:15:40,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:15:40" (1/1) ... [2022-12-13 19:15:40,816 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:15:40" (1/1) ... [2022-12-13 19:15:40,832 INFO L138 Inliner]: procedures = 173, calls = 33, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 63 [2022-12-13 19:15:40,833 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 19:15:40,833 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 19:15:40,833 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 19:15:40,833 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 19:15:40,840 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:15:40" (1/1) ... [2022-12-13 19:15:40,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:15:40" (1/1) ... [2022-12-13 19:15:40,843 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:15:40" (1/1) ... [2022-12-13 19:15:40,844 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:15:40" (1/1) ... [2022-12-13 19:15:40,851 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:15:40" (1/1) ... [2022-12-13 19:15:40,852 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:15:40" (1/1) ... [2022-12-13 19:15:40,859 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:15:40" (1/1) ... [2022-12-13 19:15:40,860 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:15:40" (1/1) ... [2022-12-13 19:15:40,864 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 19:15:40,865 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 19:15:40,865 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 19:15:40,865 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 19:15:40,866 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:15:40" (1/1) ... [2022-12-13 19:15:40,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:15:40,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:15:40,893 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 19:15:40,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 19:15:40,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-13 19:15:40,925 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 19:15:40,926 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 19:15:40,926 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 19:15:40,926 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 19:15:40,926 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 19:15:40,926 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 19:15:40,926 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 19:15:40,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 19:15:40,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 19:15:40,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 19:15:40,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-13 19:15:40,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-13 19:15:40,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-12-13 19:15:40,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 19:15:40,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 19:15:40,929 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 19:15:41,053 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 19:15:41,056 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 19:15:41,273 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 19:15:41,280 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 19:15:41,280 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 19:15:41,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:15:41 BoogieIcfgContainer [2022-12-13 19:15:41,282 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 19:15:41,285 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 19:15:41,285 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 19:15:41,288 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 19:15:41,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 07:15:40" (1/3) ... [2022-12-13 19:15:41,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d30aeb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:15:41, skipping insertion in model container [2022-12-13 19:15:41,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:15:40" (2/3) ... [2022-12-13 19:15:41,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d30aeb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:15:41, skipping insertion in model container [2022-12-13 19:15:41,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:15:41" (3/3) ... [2022-12-13 19:15:41,290 INFO L112 eAbstractionObserver]: Analyzing ICFG lazy01.i [2022-12-13 19:15:41,307 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 19:15:41,307 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-12-13 19:15:41,307 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 19:15:41,374 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 19:15:41,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 108 transitions, 240 flow [2022-12-13 19:15:41,452 INFO L130 PetriNetUnfolder]: 1/105 cut-off events. [2022-12-13 19:15:41,453 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 19:15:41,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 105 events. 1/105 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 109 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2022-12-13 19:15:41,458 INFO L82 GeneralOperation]: Start removeDead. Operand has 117 places, 108 transitions, 240 flow [2022-12-13 19:15:41,462 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 109 places, 100 transitions, 218 flow [2022-12-13 19:15:41,466 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 19:15:41,476 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 109 places, 100 transitions, 218 flow [2022-12-13 19:15:41,479 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 109 places, 100 transitions, 218 flow [2022-12-13 19:15:41,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 100 transitions, 218 flow [2022-12-13 19:15:41,503 INFO L130 PetriNetUnfolder]: 1/100 cut-off events. [2022-12-13 19:15:41,503 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 19:15:41,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 100 events. 1/100 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 108 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2022-12-13 19:15:41,505 INFO L119 LiptonReduction]: Number of co-enabled transitions 1438 [2022-12-13 19:15:49,871 INFO L134 LiptonReduction]: Checked pairs total: 3864 [2022-12-13 19:15:49,871 INFO L136 LiptonReduction]: Total number of compositions: 94 [2022-12-13 19:15:49,884 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 19:15:49,889 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;@3ad530cf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 19:15:49,890 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-12-13 19:15:49,891 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 19:15:49,891 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 19:15:49,891 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:15:49,892 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 19:15:49,892 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-12-13 19:15:49,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:15:49,896 INFO L85 PathProgramCache]: Analyzing trace with hash 375, now seen corresponding path program 1 times [2022-12-13 19:15:49,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:15:49,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [956763007] [2022-12-13 19:15:49,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:15:49,905 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:15:49,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:15:49,906 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 19:15:49,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-13 19:15:49,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:15:49,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-13 19:15:49,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:15:49,952 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 19:15:49,952 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:15:49,952 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 19:15:49,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [956763007] [2022-12-13 19:15:49,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [956763007] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:15:49,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:15:49,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 19:15:49,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077660976] [2022-12-13 19:15:49,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:15:49,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 19:15:49,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 19:15:49,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 19:15:49,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 19:15:49,977 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 202 [2022-12-13 19:15:49,981 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 94 flow. Second operand has 2 states, 2 states have (on average 100.5) internal successors, (201), 2 states have internal predecessors, (201), 0 states have call successors, (0), 0 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 19:15:49,981 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:15:49,981 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 202 [2022-12-13 19:15:49,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:15:50,246 INFO L130 PetriNetUnfolder]: 1121/1724 cut-off events. [2022-12-13 19:15:50,246 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2022-12-13 19:15:50,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3531 conditions, 1724 events. 1121/1724 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 7198 event pairs, 1121 based on Foata normal form. 0/1324 useless extension candidates. Maximal degree in co-relation 3010. Up to 1725 conditions per place. [2022-12-13 19:15:50,255 INFO L137 encePairwiseOnDemand]: 199/202 looper letters, 34 selfloop transitions, 0 changer transitions 0/34 dead transitions. [2022-12-13 19:15:50,255 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 34 transitions, 154 flow [2022-12-13 19:15:50,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 19:15:50,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 19:15:50,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 237 transitions. [2022-12-13 19:15:50,265 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5866336633663366 [2022-12-13 19:15:50,265 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 237 transitions. [2022-12-13 19:15:50,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 237 transitions. [2022-12-13 19:15:50,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:15:50,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 237 transitions. [2022-12-13 19:15:50,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 118.5) internal successors, (237), 2 states have internal predecessors, (237), 0 states have call successors, (0), 0 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 19:15:50,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 0 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 19:15:50,282 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 0 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 19:15:50,284 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 94 flow. Second operand 2 states and 237 transitions. [2022-12-13 19:15:50,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 34 transitions, 154 flow [2022-12-13 19:15:50,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 34 transitions, 142 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-13 19:15:50,291 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 74 flow [2022-12-13 19:15:50,293 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=74, PETRI_PLACES=39, PETRI_TRANSITIONS=34} [2022-12-13 19:15:50,297 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, -8 predicate places. [2022-12-13 19:15:50,297 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 74 flow [2022-12-13 19:15:50,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 100.5) internal successors, (201), 2 states have internal predecessors, (201), 0 states have call successors, (0), 0 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 19:15:50,298 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:15:50,298 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 19:15:50,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-13 19:15:50,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:15:50,499 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-12-13 19:15:50,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:15:50,500 INFO L85 PathProgramCache]: Analyzing trace with hash 369255, now seen corresponding path program 1 times [2022-12-13 19:15:50,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:15:50,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [228873563] [2022-12-13 19:15:50,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:15:50,501 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:15:50,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:15:50,502 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 19:15:50,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-13 19:15:50,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:15:50,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 19:15:50,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:15:50,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:15:50,656 INFO L321 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2022-12-13 19:15:50,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 23 [2022-12-13 19:15:50,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2022-12-13 19:15:50,714 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 19:15:50,714 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:15:50,715 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 19:15:50,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [228873563] [2022-12-13 19:15:50,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [228873563] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:15:50,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:15:50,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:15:50,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321238004] [2022-12-13 19:15:50,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:15:50,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:15:50,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 19:15:50,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:15:50,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:15:50,792 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 202 [2022-12-13 19:15:50,793 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 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 19:15:50,793 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:15:50,793 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 202 [2022-12-13 19:15:50,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:15:50,988 INFO L130 PetriNetUnfolder]: 1086/1664 cut-off events. [2022-12-13 19:15:50,988 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-12-13 19:15:50,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3357 conditions, 1664 events. 1086/1664 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 6911 event pairs, 1086 based on Foata normal form. 0/1293 useless extension candidates. Maximal degree in co-relation 3354. Up to 1663 conditions per place. [2022-12-13 19:15:50,997 INFO L137 encePairwiseOnDemand]: 198/202 looper letters, 30 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2022-12-13 19:15:50,997 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 32 transitions, 134 flow [2022-12-13 19:15:50,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:15:50,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:15:50,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 319 transitions. [2022-12-13 19:15:51,000 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5264026402640264 [2022-12-13 19:15:51,000 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 319 transitions. [2022-12-13 19:15:51,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 319 transitions. [2022-12-13 19:15:51,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:15:51,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 319 transitions. [2022-12-13 19:15:51,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 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 19:15:51,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 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 19:15:51,005 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 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 19:15:51,005 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 74 flow. Second operand 3 states and 319 transitions. [2022-12-13 19:15:51,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 32 transitions, 134 flow [2022-12-13 19:15:51,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 32 transitions, 134 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 19:15:51,006 INFO L231 Difference]: Finished difference. Result has 39 places, 32 transitions, 74 flow [2022-12-13 19:15:51,007 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=39, PETRI_TRANSITIONS=32} [2022-12-13 19:15:51,007 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, -8 predicate places. [2022-12-13 19:15:51,007 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 32 transitions, 74 flow [2022-12-13 19:15:51,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 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 19:15:51,008 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:15:51,008 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 19:15:51,015 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-13 19:15:51,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:15:51,209 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-12-13 19:15:51,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:15:51,209 INFO L85 PathProgramCache]: Analyzing trace with hash 369254, now seen corresponding path program 1 times [2022-12-13 19:15:51,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:15:51,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [825003497] [2022-12-13 19:15:51,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:15:51,210 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:15:51,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:15:51,211 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 19:15:51,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-12-13 19:15:51,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:15:51,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 19:15:51,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:15:51,308 INFO L321 Elim1Store]: treesize reduction 50, result has 23.1 percent of original size [2022-12-13 19:15:51,309 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 33 [2022-12-13 19:15:51,333 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 19:15:51,333 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:15:51,334 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 19:15:51,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [825003497] [2022-12-13 19:15:51,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [825003497] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:15:51,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:15:51,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:15:51,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275732971] [2022-12-13 19:15:51,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:15:51,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:15:51,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 19:15:51,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:15:51,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:15:51,411 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 202 [2022-12-13 19:15:51,411 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 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 19:15:51,411 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:15:51,411 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 202 [2022-12-13 19:15:51,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:15:51,625 INFO L130 PetriNetUnfolder]: 1051/1604 cut-off events. [2022-12-13 19:15:51,625 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-12-13 19:15:51,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3240 conditions, 1604 events. 1051/1604 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 6592 event pairs, 1051 based on Foata normal form. 0/1262 useless extension candidates. Maximal degree in co-relation 3236. Up to 1603 conditions per place. [2022-12-13 19:15:51,640 INFO L137 encePairwiseOnDemand]: 198/202 looper letters, 28 selfloop transitions, 2 changer transitions 0/30 dead transitions. [2022-12-13 19:15:51,640 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 30 transitions, 130 flow [2022-12-13 19:15:51,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:15:51,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:15:51,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 302 transitions. [2022-12-13 19:15:51,642 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49834983498349833 [2022-12-13 19:15:51,642 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 302 transitions. [2022-12-13 19:15:51,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 302 transitions. [2022-12-13 19:15:51,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:15:51,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 302 transitions. [2022-12-13 19:15:51,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:15:51,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 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 19:15:51,647 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 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 19:15:51,648 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 74 flow. Second operand 3 states and 302 transitions. [2022-12-13 19:15:51,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 30 transitions, 130 flow [2022-12-13 19:15:51,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 30 transitions, 126 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 19:15:51,649 INFO L231 Difference]: Finished difference. Result has 37 places, 30 transitions, 70 flow [2022-12-13 19:15:51,649 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=37, PETRI_TRANSITIONS=30} [2022-12-13 19:15:51,650 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, -10 predicate places. [2022-12-13 19:15:51,650 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 30 transitions, 70 flow [2022-12-13 19:15:51,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 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 19:15:51,650 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:15:51,651 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 19:15:51,661 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-12-13 19:15:51,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:15:51,852 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-12-13 19:15:51,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:15:51,852 INFO L85 PathProgramCache]: Analyzing trace with hash 354860184, now seen corresponding path program 1 times [2022-12-13 19:15:51,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:15:51,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2005106736] [2022-12-13 19:15:51,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:15:51,854 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:15:51,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:15:51,855 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 19:15:51,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-12-13 19:15:51,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:15:51,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 19:15:51,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:15:51,996 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-12-13 19:15:51,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2022-12-13 19:15:52,014 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 19:15:52,015 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:15:52,015 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 19:15:52,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2005106736] [2022-12-13 19:15:52,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2005106736] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:15:52,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:15:52,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:15:52,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932031003] [2022-12-13 19:15:52,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:15:52,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:15:52,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 19:15:52,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:15:52,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:15:52,092 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 202 [2022-12-13 19:15:52,093 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 30 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 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 19:15:52,093 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:15:52,093 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 202 [2022-12-13 19:15:52,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:15:52,278 INFO L130 PetriNetUnfolder]: 1016/1544 cut-off events. [2022-12-13 19:15:52,278 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-12-13 19:15:52,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3120 conditions, 1544 events. 1016/1544 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 6310 event pairs, 1016 based on Foata normal form. 0/1228 useless extension candidates. Maximal degree in co-relation 3116. Up to 1543 conditions per place. [2022-12-13 19:15:52,286 INFO L137 encePairwiseOnDemand]: 198/202 looper letters, 26 selfloop transitions, 2 changer transitions 0/28 dead transitions. [2022-12-13 19:15:52,286 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 28 transitions, 122 flow [2022-12-13 19:15:52,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:15:52,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:15:52,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 300 transitions. [2022-12-13 19:15:52,288 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49504950495049505 [2022-12-13 19:15:52,288 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 300 transitions. [2022-12-13 19:15:52,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 300 transitions. [2022-12-13 19:15:52,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:15:52,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 300 transitions. [2022-12-13 19:15:52,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 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 19:15:52,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 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 19:15:52,291 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 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 19:15:52,291 INFO L175 Difference]: Start difference. First operand has 37 places, 30 transitions, 70 flow. Second operand 3 states and 300 transitions. [2022-12-13 19:15:52,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 28 transitions, 122 flow [2022-12-13 19:15:52,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 28 transitions, 118 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 19:15:52,292 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 66 flow [2022-12-13 19:15:52,293 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2022-12-13 19:15:52,293 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, -12 predicate places. [2022-12-13 19:15:52,293 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 66 flow [2022-12-13 19:15:52,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 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 19:15:52,294 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:15:52,294 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 19:15:52,304 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-12-13 19:15:52,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:15:52,495 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-12-13 19:15:52,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:15:52,495 INFO L85 PathProgramCache]: Analyzing trace with hash 354860183, now seen corresponding path program 1 times [2022-12-13 19:15:52,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:15:52,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1295419786] [2022-12-13 19:15:52,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:15:52,496 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:15:52,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:15:52,497 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 19:15:52,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-12-13 19:15:52,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:15:52,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 19:15:52,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:15:52,600 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-12-13 19:15:52,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 27 [2022-12-13 19:15:52,628 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 19:15:52,628 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:15:52,629 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 19:15:52,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1295419786] [2022-12-13 19:15:52,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1295419786] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:15:52,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:15:52,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:15:52,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586868182] [2022-12-13 19:15:52,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:15:52,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:15:52,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 19:15:52,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:15:52,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:15:52,695 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 202 [2022-12-13 19:15:52,695 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 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 19:15:52,695 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:15:52,695 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 202 [2022-12-13 19:15:52,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:15:52,874 INFO L130 PetriNetUnfolder]: 981/1484 cut-off events. [2022-12-13 19:15:52,874 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-12-13 19:15:52,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3000 conditions, 1484 events. 981/1484 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 6009 event pairs, 981 based on Foata normal form. 0/1194 useless extension candidates. Maximal degree in co-relation 2996. Up to 1483 conditions per place. [2022-12-13 19:15:52,881 INFO L137 encePairwiseOnDemand]: 198/202 looper letters, 24 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2022-12-13 19:15:52,881 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 26 transitions, 114 flow [2022-12-13 19:15:52,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:15:52,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:15:52,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 313 transitions. [2022-12-13 19:15:52,883 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5165016501650165 [2022-12-13 19:15:52,883 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 313 transitions. [2022-12-13 19:15:52,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 313 transitions. [2022-12-13 19:15:52,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:15:52,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 313 transitions. [2022-12-13 19:15:52,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 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 19:15:52,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 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 19:15:52,886 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 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 19:15:52,886 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 66 flow. Second operand 3 states and 313 transitions. [2022-12-13 19:15:52,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 26 transitions, 114 flow [2022-12-13 19:15:52,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 26 transitions, 110 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 19:15:52,887 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 62 flow [2022-12-13 19:15:52,887 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2022-12-13 19:15:52,888 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, -14 predicate places. [2022-12-13 19:15:52,888 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 62 flow [2022-12-13 19:15:52,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 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 19:15:52,888 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:15:52,889 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:15:52,900 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-12-13 19:15:53,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:15:53,089 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-12-13 19:15:53,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:15:53,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1718226487, now seen corresponding path program 1 times [2022-12-13 19:15:53,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:15:53,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [654551635] [2022-12-13 19:15:53,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:15:53,090 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:15:53,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:15:53,091 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 19:15:53,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-12-13 19:15:53,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:15:53,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 19:15:53,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:15:53,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:15:53,191 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2022-12-13 19:15:53,192 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 20 [2022-12-13 19:15:53,198 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-12-13 19:15:53,242 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 19:15:53,242 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:15:53,242 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 19:15:53,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [654551635] [2022-12-13 19:15:53,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [654551635] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:15:53,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:15:53,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:15:53,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12411143] [2022-12-13 19:15:53,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:15:53,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:15:53,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 19:15:53,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:15:53,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:15:53,307 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 202 [2022-12-13 19:15:53,308 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:15:53,308 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:15:53,308 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 202 [2022-12-13 19:15:53,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:15:53,424 INFO L130 PetriNetUnfolder]: 746/1149 cut-off events. [2022-12-13 19:15:53,425 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-12-13 19:15:53,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2330 conditions, 1149 events. 746/1149 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4461 event pairs, 746 based on Foata normal form. 0/979 useless extension candidates. Maximal degree in co-relation 2326. Up to 1148 conditions per place. [2022-12-13 19:15:53,428 INFO L137 encePairwiseOnDemand]: 199/202 looper letters, 23 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2022-12-13 19:15:53,428 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 25 transitions, 110 flow [2022-12-13 19:15:53,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:15:53,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:15:53,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 311 transitions. [2022-12-13 19:15:53,429 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5132013201320133 [2022-12-13 19:15:53,429 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 311 transitions. [2022-12-13 19:15:53,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 311 transitions. [2022-12-13 19:15:53,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:15:53,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 311 transitions. [2022-12-13 19:15:53,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:15:53,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 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 19:15:53,431 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 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 19:15:53,431 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 62 flow. Second operand 3 states and 311 transitions. [2022-12-13 19:15:53,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 25 transitions, 110 flow [2022-12-13 19:15:53,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 25 transitions, 106 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 19:15:53,432 INFO L231 Difference]: Finished difference. Result has 32 places, 25 transitions, 60 flow [2022-12-13 19:15:53,432 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=32, PETRI_TRANSITIONS=25} [2022-12-13 19:15:53,432 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, -15 predicate places. [2022-12-13 19:15:53,433 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 25 transitions, 60 flow [2022-12-13 19:15:53,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:15:53,433 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:15:53,433 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:15:53,442 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-12-13 19:15:53,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:15:53,635 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-12-13 19:15:53,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:15:53,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1718226486, now seen corresponding path program 1 times [2022-12-13 19:15:53,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:15:53,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1672414395] [2022-12-13 19:15:53,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:15:53,637 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:15:53,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:15:53,641 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 19:15:53,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-12-13 19:15:53,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:15:53,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 19:15:53,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:15:53,775 INFO L321 Elim1Store]: treesize reduction 46, result has 29.2 percent of original size [2022-12-13 19:15:53,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 33 [2022-12-13 19:15:53,800 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 19:15:53,800 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:15:53,800 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 19:15:53,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1672414395] [2022-12-13 19:15:53,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1672414395] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:15:53,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:15:53,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:15:53,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736245811] [2022-12-13 19:15:53,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:15:53,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:15:53,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 19:15:53,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:15:53,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:15:53,848 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 202 [2022-12-13 19:15:53,848 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 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 19:15:53,848 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:15:53,848 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 202 [2022-12-13 19:15:53,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:15:53,929 INFO L130 PetriNetUnfolder]: 511/814 cut-off events. [2022-12-13 19:15:53,929 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-12-13 19:15:53,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1660 conditions, 814 events. 511/814 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2982 event pairs, 511 based on Foata normal form. 0/764 useless extension candidates. Maximal degree in co-relation 1656. Up to 813 conditions per place. [2022-12-13 19:15:53,931 INFO L137 encePairwiseOnDemand]: 199/202 looper letters, 22 selfloop transitions, 2 changer transitions 0/24 dead transitions. [2022-12-13 19:15:53,931 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 24 transitions, 106 flow [2022-12-13 19:15:53,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:15:53,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:15:53,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 295 transitions. [2022-12-13 19:15:53,932 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4867986798679868 [2022-12-13 19:15:53,932 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 295 transitions. [2022-12-13 19:15:53,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 295 transitions. [2022-12-13 19:15:53,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:15:53,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 295 transitions. [2022-12-13 19:15:53,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:15:53,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 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 19:15:53,934 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 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 19:15:53,934 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 60 flow. Second operand 3 states and 295 transitions. [2022-12-13 19:15:53,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 24 transitions, 106 flow [2022-12-13 19:15:53,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 24 transitions, 102 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 19:15:53,935 INFO L231 Difference]: Finished difference. Result has 31 places, 24 transitions, 58 flow [2022-12-13 19:15:53,935 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=31, PETRI_TRANSITIONS=24} [2022-12-13 19:15:53,935 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, -16 predicate places. [2022-12-13 19:15:53,935 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 24 transitions, 58 flow [2022-12-13 19:15:53,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 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 19:15:53,937 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:15:53,937 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:15:53,944 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-12-13 19:15:54,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:15:54,138 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err0ASSERT_VIOLATIONMEMORY_LEAK === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-12-13 19:15:54,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:15:54,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1725413011, now seen corresponding path program 1 times [2022-12-13 19:15:54,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:15:54,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1501192121] [2022-12-13 19:15:54,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:15:54,139 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:15:54,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:15:54,139 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 19:15:54,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-12-13 19:15:54,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:15:54,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 19:15:54,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:15:54,202 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 19:15:54,202 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:15:54,203 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 19:15:54,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1501192121] [2022-12-13 19:15:54,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1501192121] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:15:54,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:15:54,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:15:54,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391059676] [2022-12-13 19:15:54,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:15:54,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:15:54,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 19:15:54,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:15:54,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:15:54,210 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 202 [2022-12-13 19:15:54,211 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 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 19:15:54,211 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:15:54,211 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 202 [2022-12-13 19:15:54,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:15:54,329 INFO L130 PetriNetUnfolder]: 481/772 cut-off events. [2022-12-13 19:15:54,329 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-12-13 19:15:54,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1576 conditions, 772 events. 481/772 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2963 event pairs, 159 based on Foata normal form. 0/734 useless extension candidates. Maximal degree in co-relation 1572. Up to 619 conditions per place. [2022-12-13 19:15:54,332 INFO L137 encePairwiseOnDemand]: 198/202 looper letters, 34 selfloop transitions, 3 changer transitions 0/37 dead transitions. [2022-12-13 19:15:54,332 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 37 transitions, 160 flow [2022-12-13 19:15:54,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:15:54,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:15:54,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 326 transitions. [2022-12-13 19:15:54,334 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5379537953795379 [2022-12-13 19:15:54,334 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 326 transitions. [2022-12-13 19:15:54,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 326 transitions. [2022-12-13 19:15:54,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:15:54,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 326 transitions. [2022-12-13 19:15:54,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 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 19:15:54,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 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 19:15:54,336 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 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 19:15:54,336 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 58 flow. Second operand 3 states and 326 transitions. [2022-12-13 19:15:54,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 37 transitions, 160 flow [2022-12-13 19:15:54,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 37 transitions, 156 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 19:15:54,337 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 73 flow [2022-12-13 19:15:54,337 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2022-12-13 19:15:54,338 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, -15 predicate places. [2022-12-13 19:15:54,338 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 73 flow [2022-12-13 19:15:54,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 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 19:15:54,338 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:15:54,338 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:15:54,347 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-12-13 19:15:54,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:15:54,540 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err0ASSERT_VIOLATIONMEMORY_LEAK === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-12-13 19:15:54,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:15:54,540 INFO L85 PathProgramCache]: Analyzing trace with hash 311410096, now seen corresponding path program 1 times [2022-12-13 19:15:54,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:15:54,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2064103745] [2022-12-13 19:15:54,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:15:54,542 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:15:54,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:15:54,544 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 19:15:54,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-12-13 19:15:54,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:15:54,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 19:15:54,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:15:54,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-12-13 19:15:54,643 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 19:15:54,643 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:15:54,643 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 19:15:54,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2064103745] [2022-12-13 19:15:54,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2064103745] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:15:54,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:15:54,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:15:54,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84036411] [2022-12-13 19:15:54,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:15:54,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:15:54,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 19:15:54,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:15:54,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:15:54,659 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 202 [2022-12-13 19:15:54,660 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 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 19:15:54,660 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:15:54,660 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 202 [2022-12-13 19:15:54,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:15:54,752 INFO L130 PetriNetUnfolder]: 120/277 cut-off events. [2022-12-13 19:15:54,752 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-12-13 19:15:54,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 636 conditions, 277 events. 120/277 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1126 event pairs, 31 based on Foata normal form. 80/357 useless extension candidates. Maximal degree in co-relation 631. Up to 197 conditions per place. [2022-12-13 19:15:54,754 INFO L137 encePairwiseOnDemand]: 196/202 looper letters, 29 selfloop transitions, 6 changer transitions 0/35 dead transitions. [2022-12-13 19:15:54,754 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 165 flow [2022-12-13 19:15:54,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:15:54,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:15:54,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 312 transitions. [2022-12-13 19:15:54,755 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5148514851485149 [2022-12-13 19:15:54,755 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 312 transitions. [2022-12-13 19:15:54,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 312 transitions. [2022-12-13 19:15:54,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:15:54,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 312 transitions. [2022-12-13 19:15:54,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:15:54,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 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 19:15:54,757 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 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 19:15:54,757 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 73 flow. Second operand 3 states and 312 transitions. [2022-12-13 19:15:54,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 165 flow [2022-12-13 19:15:54,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 162 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:15:54,758 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 82 flow [2022-12-13 19:15:54,758 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2022-12-13 19:15:54,758 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, -14 predicate places. [2022-12-13 19:15:54,758 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 82 flow [2022-12-13 19:15:54,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 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 19:15:54,758 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:15:54,758 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:15:54,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-12-13 19:15:54,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:15:54,960 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err0ASSERT_VIOLATIONMEMORY_LEAK === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-12-13 19:15:54,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:15:54,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1096961459, now seen corresponding path program 1 times [2022-12-13 19:15:54,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:15:54,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1645012942] [2022-12-13 19:15:54,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:15:54,962 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:15:54,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:15:54,964 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 19:15:54,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-12-13 19:15:55,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:15:55,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 19:15:55,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:15:55,054 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 19:15:55,054 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:15:55,054 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 19:15:55,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1645012942] [2022-12-13 19:15:55,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1645012942] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:15:55,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:15:55,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:15:55,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368908592] [2022-12-13 19:15:55,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:15:55,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:15:55,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 19:15:55,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:15:55,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:15:55,065 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 202 [2022-12-13 19:15:55,065 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 82 flow. Second operand has 4 states, 4 states have (on average 98.75) internal successors, (395), 4 states have internal predecessors, (395), 0 states have call successors, (0), 0 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 19:15:55,065 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:15:55,065 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 202 [2022-12-13 19:15:55,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:15:55,183 INFO L130 PetriNetUnfolder]: 119/274 cut-off events. [2022-12-13 19:15:55,183 INFO L131 PetriNetUnfolder]: For 55/55 co-relation queries the response was YES. [2022-12-13 19:15:55,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 702 conditions, 274 events. 119/274 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1007 event pairs, 49 based on Foata normal form. 2/276 useless extension candidates. Maximal degree in co-relation 697. Up to 173 conditions per place. [2022-12-13 19:15:55,184 INFO L137 encePairwiseOnDemand]: 198/202 looper letters, 40 selfloop transitions, 4 changer transitions 0/44 dead transitions. [2022-12-13 19:15:55,184 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 44 transitions, 223 flow [2022-12-13 19:15:55,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:15:55,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 19:15:55,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 429 transitions. [2022-12-13 19:15:55,185 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.530940594059406 [2022-12-13 19:15:55,185 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 429 transitions. [2022-12-13 19:15:55,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 429 transitions. [2022-12-13 19:15:55,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:15:55,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 429 transitions. [2022-12-13 19:15:55,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 107.25) internal successors, (429), 4 states have internal predecessors, (429), 0 states have call successors, (0), 0 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 19:15:55,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 202.0) internal successors, (1010), 5 states have internal predecessors, (1010), 0 states have call successors, (0), 0 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 19:15:55,190 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 202.0) internal successors, (1010), 5 states have internal predecessors, (1010), 0 states have call successors, (0), 0 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 19:15:55,191 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 82 flow. Second operand 4 states and 429 transitions. [2022-12-13 19:15:55,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 44 transitions, 223 flow [2022-12-13 19:15:55,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 44 transitions, 210 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:15:55,192 INFO L231 Difference]: Finished difference. Result has 36 places, 26 transitions, 88 flow [2022-12-13 19:15:55,192 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=88, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2022-12-13 19:15:55,192 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, -11 predicate places. [2022-12-13 19:15:55,192 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 88 flow [2022-12-13 19:15:55,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 98.75) internal successors, (395), 4 states have internal predecessors, (395), 0 states have call successors, (0), 0 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 19:15:55,193 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:15:55,193 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:15:55,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-12-13 19:15:55,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:15:55,395 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err0ASSERT_VIOLATIONMEMORY_LEAK === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-12-13 19:15:55,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:15:55,396 INFO L85 PathProgramCache]: Analyzing trace with hash -2077940115, now seen corresponding path program 1 times [2022-12-13 19:15:55,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:15:55,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [194029945] [2022-12-13 19:15:55,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:15:55,399 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:15:55,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:15:55,402 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 19:15:55,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-12-13 19:15:55,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:15:55,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 19:15:55,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:15:55,545 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 19:15:55,545 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:15:55,545 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 19:15:55,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [194029945] [2022-12-13 19:15:55,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [194029945] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:15:55,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:15:55,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:15:55,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767198384] [2022-12-13 19:15:55,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:15:55,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:15:55,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 19:15:55,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:15:55,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:15:55,558 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 202 [2022-12-13 19:15:55,559 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 88 flow. Second operand has 5 states, 5 states have (on average 96.4) internal successors, (482), 5 states have internal predecessors, (482), 0 states have call successors, (0), 0 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 19:15:55,559 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:15:55,559 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 202 [2022-12-13 19:15:55,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:15:55,753 INFO L130 PetriNetUnfolder]: 116/267 cut-off events. [2022-12-13 19:15:55,753 INFO L131 PetriNetUnfolder]: For 94/94 co-relation queries the response was YES. [2022-12-13 19:15:55,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 675 conditions, 267 events. 116/267 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1015 event pairs, 27 based on Foata normal form. 4/271 useless extension candidates. Maximal degree in co-relation 668. Up to 146 conditions per place. [2022-12-13 19:15:55,754 INFO L137 encePairwiseOnDemand]: 197/202 looper letters, 46 selfloop transitions, 5 changer transitions 0/51 dead transitions. [2022-12-13 19:15:55,754 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 51 transitions, 253 flow [2022-12-13 19:15:55,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:15:55,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 19:15:55,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 522 transitions. [2022-12-13 19:15:55,755 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5168316831683168 [2022-12-13 19:15:55,755 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 522 transitions. [2022-12-13 19:15:55,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 522 transitions. [2022-12-13 19:15:55,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:15:55,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 522 transitions. [2022-12-13 19:15:55,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 104.4) internal successors, (522), 5 states have internal predecessors, (522), 0 states have call successors, (0), 0 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 19:15:55,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 202.0) internal successors, (1212), 6 states have internal predecessors, (1212), 0 states have call successors, (0), 0 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 19:15:55,757 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 202.0) internal successors, (1212), 6 states have internal predecessors, (1212), 0 states have call successors, (0), 0 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 19:15:55,757 INFO L175 Difference]: Start difference. First operand has 36 places, 26 transitions, 88 flow. Second operand 5 states and 522 transitions. [2022-12-13 19:15:55,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 51 transitions, 253 flow [2022-12-13 19:15:55,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 51 transitions, 245 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-13 19:15:55,759 INFO L231 Difference]: Finished difference. Result has 40 places, 27 transitions, 101 flow [2022-12-13 19:15:55,759 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=101, PETRI_PLACES=40, PETRI_TRANSITIONS=27} [2022-12-13 19:15:55,759 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, -7 predicate places. [2022-12-13 19:15:55,759 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 27 transitions, 101 flow [2022-12-13 19:15:55,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 96.4) internal successors, (482), 5 states have internal predecessors, (482), 0 states have call successors, (0), 0 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 19:15:55,759 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:15:55,759 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:15:55,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-12-13 19:15:55,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:15:55,961 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err0ASSERT_VIOLATIONMEMORY_LEAK === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-12-13 19:15:55,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:15:55,962 INFO L85 PathProgramCache]: Analyzing trace with hash -115874083, now seen corresponding path program 1 times [2022-12-13 19:15:55,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:15:55,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1546667884] [2022-12-13 19:15:55,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:15:55,963 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:15:55,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:15:55,966 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 19:15:55,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-12-13 19:15:56,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:15:56,094 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:15:56,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:15:56,147 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-12-13 19:15:56,147 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 19:15:56,148 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thread3Err0ASSERT_VIOLATIONMEMORY_LEAK (17 of 18 remaining) [2022-12-13 19:15:56,149 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0ASSERT_VIOLATIONMEMORY_LEAK (16 of 18 remaining) [2022-12-13 19:15:56,150 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 18 remaining) [2022-12-13 19:15:56,150 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 18 remaining) [2022-12-13 19:15:56,150 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 18 remaining) [2022-12-13 19:15:56,150 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 18 remaining) [2022-12-13 19:15:56,150 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 18 remaining) [2022-12-13 19:15:56,150 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 18 remaining) [2022-12-13 19:15:56,150 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 18 remaining) [2022-12-13 19:15:56,150 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 18 remaining) [2022-12-13 19:15:56,150 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 18 remaining) [2022-12-13 19:15:56,151 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 18 remaining) [2022-12-13 19:15:56,151 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 18 remaining) [2022-12-13 19:15:56,151 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 18 remaining) [2022-12-13 19:15:56,151 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (3 of 18 remaining) [2022-12-13 19:15:56,151 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 18 remaining) [2022-12-13 19:15:56,151 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 18 remaining) [2022-12-13 19:15:56,151 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 18 remaining) [2022-12-13 19:15:56,159 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-12-13 19:15:56,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:15:56,352 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:15:56,363 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 19:15:56,363 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 19:15:56,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 07:15:56 BasicIcfg [2022-12-13 19:15:56,404 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 19:15:56,404 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 19:15:56,404 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 19:15:56,405 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 19:15:56,405 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:15:41" (3/4) ... [2022-12-13 19:15:56,407 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 19:15:56,407 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 19:15:56,407 INFO L158 Benchmark]: Toolchain (without parser) took 16006.85ms. Allocated memory was 77.6MB in the beginning and 169.9MB in the end (delta: 92.3MB). Free memory was 58.7MB in the beginning and 77.2MB in the end (delta: -18.5MB). Peak memory consumption was 72.6MB. Max. memory is 16.1GB. [2022-12-13 19:15:56,407 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 58.7MB. Free memory is still 37.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 19:15:56,407 INFO L158 Benchmark]: CACSL2BoogieTranslator took 392.72ms. Allocated memory is still 77.6MB. Free memory was 58.4MB in the beginning and 38.0MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-12-13 19:15:56,408 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.95ms. Allocated memory is still 77.6MB. Free memory was 38.0MB in the beginning and 35.7MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 19:15:56,408 INFO L158 Benchmark]: Boogie Preprocessor took 31.04ms. Allocated memory is still 77.6MB. Free memory was 35.7MB in the beginning and 57.8MB in the end (delta: -22.1MB). Peak memory consumption was 3.5MB. Max. memory is 16.1GB. [2022-12-13 19:15:56,408 INFO L158 Benchmark]: RCFGBuilder took 417.61ms. Allocated memory is still 77.6MB. Free memory was 57.8MB in the beginning and 40.3MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-13 19:15:56,408 INFO L158 Benchmark]: TraceAbstraction took 15119.46ms. Allocated memory was 77.6MB in the beginning and 169.9MB in the end (delta: 92.3MB). Free memory was 39.5MB in the beginning and 77.2MB in the end (delta: -37.7MB). Peak memory consumption was 54.4MB. Max. memory is 16.1GB. [2022-12-13 19:15:56,409 INFO L158 Benchmark]: Witness Printer took 2.43ms. Allocated memory is still 169.9MB. Free memory is still 77.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 19:15:56,410 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 58.7MB. Free memory is still 37.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 392.72ms. Allocated memory is still 77.6MB. Free memory was 58.4MB in the beginning and 38.0MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.95ms. Allocated memory is still 77.6MB. Free memory was 38.0MB in the beginning and 35.7MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.04ms. Allocated memory is still 77.6MB. Free memory was 35.7MB in the beginning and 57.8MB in the end (delta: -22.1MB). Peak memory consumption was 3.5MB. Max. memory is 16.1GB. * RCFGBuilder took 417.61ms. Allocated memory is still 77.6MB. Free memory was 57.8MB in the beginning and 40.3MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 15119.46ms. Allocated memory was 77.6MB in the beginning and 169.9MB in the end (delta: 92.3MB). Free memory was 39.5MB in the beginning and 77.2MB in the end (delta: -37.7MB). Peak memory consumption was 54.4MB. Max. memory is 16.1GB. * Witness Printer took 2.43ms. Allocated memory is still 169.9MB. Free memory is still 77.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.4s, 109 PlacesBefore, 47 PlacesAfterwards, 100 TransitionsBefore, 38 TransitionsAfterwards, 1438 CoEnabledTransitionPairs, 6 FixpointIterations, 44 TrivialSequentialCompositions, 47 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 0 ChoiceCompositions, 94 TotalNumberOfCompositions, 3864 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1748, independent: 1631, independent conditional: 0, independent unconditional: 1631, dependent: 117, dependent conditional: 0, dependent unconditional: 117, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 755, independent: 733, independent conditional: 0, independent unconditional: 733, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1748, independent: 898, independent conditional: 0, independent unconditional: 898, dependent: 95, dependent conditional: 0, dependent unconditional: 95, unknown: 755, unknown conditional: 0, unknown unconditional: 755] , Statistics on independence cache: Total cache size (in pairs): 83, Positive cache size: 71, Positive conditional cache size: 0, Positive unconditional cache size: 71, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 722]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 722. Possible FailurePath: [L702] 0 pthread_mutex_t mutex; [L703] 0 int data = 0; [L731] 0 pthread_t t1, t2, t3; [L732] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, data=0, mutex={3:0}, pthread_create(&t1, 0, thread1, 0)=0, t1={5:0}, t2={15:0}, t3={7:0}] [L733] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, data=0, mutex={3:0}, pthread_create(&t2, 0, thread2, 0)=1, pthread_mutex_lock(&mutex)=0, t1={5:0}, t2={15:0}, t3={7:0}] [L734] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=0, mutex={3:0}, pthread_create(&t3, 0, thread3, 0)=2, pthread_mutex_lock(&mutex)=0, t1={5:0}, t2={15:0}, t3={7:0}] [L707] 1 data++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=1, mutex={3:0}] [L709] 1 return 0; [L714] 2 data+=2 VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L716] 2 return 0; [L721] COND TRUE 3 data >= 3 [L722] 3 reach_error() VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 728]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 732]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 733]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 734]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 140 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 14.9s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 632 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 324 mSDsluCounter, 59 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 62 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 834 IncrementalHoareTripleChecker+Invalid, 896 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 62 mSolverCounterUnsat, 55 mSDtfsCounter, 834 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=101occurred in iteration=11, InterpolantAutomatonStates: 35, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 87 NumberOfCodeBlocks, 87 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 61 ConstructedInterpolants, 0 QuantifiedInterpolants, 301 SizeOfPredicates, 13 NumberOfNonLiveVariables, 832 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-13 19:15:56,422 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc371b07-cdb3-4733-b0a9-d7f1a0a01cb3/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample