./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/queue_longest.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 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_20bcffb1-8cf5-46fd-a088-f2ad28dfa88a/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcffb1-8cf5-46fd-a088-f2ad28dfa88a/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcffb1-8cf5-46fd-a088-f2ad28dfa88a/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcffb1-8cf5-46fd-a088-f2ad28dfa88a/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/queue_longest.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcffb1-8cf5-46fd-a088-f2ad28dfa88a/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcffb1-8cf5-46fd-a088-f2ad28dfa88a/bin/uautomizer-vX5HgA9Q3a --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5fb3c623242420f3b3352ce2377df781fcc1efd56f82dd0011f9620e127821b3 --- 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-b5237d8 [2022-11-21 17:03:35,934 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 17:03:35,937 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 17:03:35,983 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 17:03:35,986 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 17:03:35,988 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 17:03:35,992 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 17:03:35,996 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 17:03:36,000 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 17:03:36,007 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 17:03:36,010 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 17:03:36,012 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 17:03:36,014 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 17:03:36,016 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 17:03:36,018 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 17:03:36,020 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 17:03:36,024 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 17:03:36,025 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 17:03:36,027 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 17:03:36,032 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 17:03:36,038 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 17:03:36,040 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 17:03:36,042 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 17:03:36,044 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 17:03:36,048 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 17:03:36,050 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 17:03:36,050 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 17:03:36,052 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 17:03:36,053 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 17:03:36,056 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 17:03:36,056 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 17:03:36,057 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 17:03:36,059 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 17:03:36,060 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 17:03:36,061 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 17:03:36,062 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 17:03:36,063 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 17:03:36,063 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 17:03:36,063 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 17:03:36,064 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 17:03:36,065 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 17:03:36,066 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcffb1-8cf5-46fd-a088-f2ad28dfa88a/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-21 17:03:36,110 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 17:03:36,111 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 17:03:36,112 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 17:03:36,112 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 17:03:36,113 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 17:03:36,113 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 17:03:36,114 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 17:03:36,114 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 17:03:36,114 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 17:03:36,115 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 17:03:36,116 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 17:03:36,116 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 17:03:36,116 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 17:03:36,117 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 17:03:36,117 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 17:03:36,117 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 17:03:36,117 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 17:03:36,118 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 17:03:36,118 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-21 17:03:36,118 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 17:03:36,118 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 17:03:36,119 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 17:03:36,119 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 17:03:36,119 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 17:03:36,119 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 17:03:36,120 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 17:03:36,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:03:36,120 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 17:03:36,121 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 17:03:36,121 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 17:03:36,121 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 17:03:36,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 17:03:36,122 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 17:03:36,122 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 17:03:36,123 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 17:03:36,123 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcffb1-8cf5-46fd-a088-f2ad28dfa88a/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcffb1-8cf5-46fd-a088-f2ad28dfa88a/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fb3c623242420f3b3352ce2377df781fcc1efd56f82dd0011f9620e127821b3 [2022-11-21 17:03:36,465 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 17:03:36,502 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 17:03:36,505 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 17:03:36,507 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 17:03:36,507 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 17:03:36,508 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcffb1-8cf5-46fd-a088-f2ad28dfa88a/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/pthread/queue_longest.i [2022-11-21 17:03:39,528 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 17:03:39,954 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 17:03:39,955 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcffb1-8cf5-46fd-a088-f2ad28dfa88a/sv-benchmarks/c/pthread/queue_longest.i [2022-11-21 17:03:39,977 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcffb1-8cf5-46fd-a088-f2ad28dfa88a/bin/uautomizer-vX5HgA9Q3a/data/abd8db275/f91f35c0b9504cb08765e98f6a838839/FLAG426c03057 [2022-11-21 17:03:40,001 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcffb1-8cf5-46fd-a088-f2ad28dfa88a/bin/uautomizer-vX5HgA9Q3a/data/abd8db275/f91f35c0b9504cb08765e98f6a838839 [2022-11-21 17:03:40,004 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 17:03:40,006 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 17:03:40,008 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 17:03:40,008 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 17:03:40,012 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 17:03:40,013 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:03:40" (1/1) ... [2022-11-21 17:03:40,014 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b40657 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:03:40, skipping insertion in model container [2022-11-21 17:03:40,015 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:03:40" (1/1) ... [2022-11-21 17:03:40,023 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 17:03:40,083 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 17:03:40,710 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_20bcffb1-8cf5-46fd-a088-f2ad28dfa88a/sv-benchmarks/c/pthread/queue_longest.i[43296,43309] [2022-11-21 17:03:40,716 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_20bcffb1-8cf5-46fd-a088-f2ad28dfa88a/sv-benchmarks/c/pthread/queue_longest.i[43503,43516] [2022-11-21 17:03:40,724 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_20bcffb1-8cf5-46fd-a088-f2ad28dfa88a/sv-benchmarks/c/pthread/queue_longest.i[43783,43796] [2022-11-21 17:03:40,733 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:03:40,749 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 17:03:40,812 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_20bcffb1-8cf5-46fd-a088-f2ad28dfa88a/sv-benchmarks/c/pthread/queue_longest.i[43296,43309] [2022-11-21 17:03:40,814 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_20bcffb1-8cf5-46fd-a088-f2ad28dfa88a/sv-benchmarks/c/pthread/queue_longest.i[43503,43516] [2022-11-21 17:03:40,818 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_20bcffb1-8cf5-46fd-a088-f2ad28dfa88a/sv-benchmarks/c/pthread/queue_longest.i[43783,43796] [2022-11-21 17:03:40,820 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:03:40,870 INFO L208 MainTranslator]: Completed translation [2022-11-21 17:03:40,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:03:40 WrapperNode [2022-11-21 17:03:40,871 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 17:03:40,872 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 17:03:40,872 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 17:03:40,873 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 17:03:40,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:03:40" (1/1) ... [2022-11-21 17:03:40,903 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:03:40" (1/1) ... [2022-11-21 17:03:40,946 INFO L138 Inliner]: procedures = 274, calls = 60, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 259 [2022-11-21 17:03:40,947 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 17:03:40,948 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 17:03:40,949 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 17:03:40,949 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 17:03:40,960 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:03:40" (1/1) ... [2022-11-21 17:03:40,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:03:40" (1/1) ... [2022-11-21 17:03:40,983 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:03:40" (1/1) ... [2022-11-21 17:03:40,983 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:03:40" (1/1) ... [2022-11-21 17:03:40,993 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:03:40" (1/1) ... [2022-11-21 17:03:41,013 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:03:40" (1/1) ... [2022-11-21 17:03:41,015 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:03:40" (1/1) ... [2022-11-21 17:03:41,017 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:03:40" (1/1) ... [2022-11-21 17:03:41,020 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 17:03:41,021 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 17:03:41,021 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 17:03:41,022 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 17:03:41,022 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:03:40" (1/1) ... [2022-11-21 17:03:41,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:03:41,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcffb1-8cf5-46fd-a088-f2ad28dfa88a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:03:41,090 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcffb1-8cf5-46fd-a088-f2ad28dfa88a/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 17:03:41,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcffb1-8cf5-46fd-a088-f2ad28dfa88a/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 17:03:41,134 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-21 17:03:41,134 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-21 17:03:41,134 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-21 17:03:41,135 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-21 17:03:41,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 17:03:41,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 17:03:41,136 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 17:03:41,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 17:03:41,136 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-21 17:03:41,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 17:03:41,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 17:03:41,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 17:03:41,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 17:03:41,140 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 17:03:41,291 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 17:03:41,293 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 17:03:41,814 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 17:03:41,825 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 17:03:41,839 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-21 17:03:41,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:03:41 BoogieIcfgContainer [2022-11-21 17:03:41,842 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 17:03:41,844 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 17:03:41,844 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 17:03:41,847 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 17:03:41,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:03:40" (1/3) ... [2022-11-21 17:03:41,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7edc6efb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:03:41, skipping insertion in model container [2022-11-21 17:03:41,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:03:40" (2/3) ... [2022-11-21 17:03:41,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7edc6efb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:03:41, skipping insertion in model container [2022-11-21 17:03:41,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:03:41" (3/3) ... [2022-11-21 17:03:41,850 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longest.i [2022-11-21 17:03:41,860 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 17:03:41,871 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 17:03:41,871 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-21 17:03:41,872 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 17:03:42,048 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-21 17:03:42,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 297 places, 305 transitions, 626 flow [2022-11-21 17:03:42,381 INFO L130 PetriNetUnfolder]: 15/303 cut-off events. [2022-11-21 17:03:42,381 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-21 17:03:42,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 303 events. 15/303 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 469 event pairs, 0 based on Foata normal form. 0/270 useless extension candidates. Maximal degree in co-relation 223. Up to 2 conditions per place. [2022-11-21 17:03:42,392 INFO L82 GeneralOperation]: Start removeDead. Operand has 297 places, 305 transitions, 626 flow [2022-11-21 17:03:42,404 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 285 places, 293 transitions, 595 flow [2022-11-21 17:03:42,422 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:03:42,431 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@5146b4ca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:03:42,431 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2022-11-21 17:03:42,473 INFO L130 PetriNetUnfolder]: 3/110 cut-off events. [2022-11-21 17:03:42,473 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 17:03:42,473 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:03:42,474 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:03:42,475 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-21 17:03:42,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:03:42,480 INFO L85 PathProgramCache]: Analyzing trace with hash 2062797442, now seen corresponding path program 1 times [2022-11-21 17:03:42,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:03:42,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167611272] [2022-11-21 17:03:42,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:03:42,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:03:42,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:03:43,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:03:43,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:03:43,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167611272] [2022-11-21 17:03:43,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167611272] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:03:43,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:03:43,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-21 17:03:43,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528727940] [2022-11-21 17:03:43,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:03:43,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 17:03:43,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:03:43,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 17:03:43,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-21 17:03:43,932 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 305 [2022-11-21 17:03:43,942 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 293 transitions, 595 flow. Second operand has 12 states, 12 states have (on average 230.33333333333334) internal successors, (2764), 12 states have internal predecessors, (2764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:43,942 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:03:43,943 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 305 [2022-11-21 17:03:43,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:03:45,565 INFO L130 PetriNetUnfolder]: 1003/4825 cut-off events. [2022-11-21 17:03:45,566 INFO L131 PetriNetUnfolder]: For 54/54 co-relation queries the response was YES. [2022-11-21 17:03:45,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6349 conditions, 4825 events. 1003/4825 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 42086 event pairs, 789 based on Foata normal form. 203/4356 useless extension candidates. Maximal degree in co-relation 6146. Up to 1435 conditions per place. [2022-11-21 17:03:45,607 INFO L137 encePairwiseOnDemand]: 287/305 looper letters, 52 selfloop transitions, 12 changer transitions 0/279 dead transitions. [2022-11-21 17:03:45,608 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 279 transitions, 695 flow [2022-11-21 17:03:45,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 17:03:45,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-21 17:03:45,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3034 transitions. [2022-11-21 17:03:45,631 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7651954602774275 [2022-11-21 17:03:45,632 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3034 transitions. [2022-11-21 17:03:45,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3034 transitions. [2022-11-21 17:03:45,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:03:45,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3034 transitions. [2022-11-21 17:03:45,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 233.3846153846154) internal successors, (3034), 13 states have internal predecessors, (3034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:45,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 305.0) internal successors, (4270), 14 states have internal predecessors, (4270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:45,670 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 305.0) internal successors, (4270), 14 states have internal predecessors, (4270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:45,672 INFO L175 Difference]: Start difference. First operand has 285 places, 293 transitions, 595 flow. Second operand 13 states and 3034 transitions. [2022-11-21 17:03:45,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 279 transitions, 695 flow [2022-11-21 17:03:45,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 279 transitions, 690 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 17:03:45,685 INFO L231 Difference]: Finished difference. Result has 286 places, 279 transitions, 586 flow [2022-11-21 17:03:45,687 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=586, PETRI_PLACES=286, PETRI_TRANSITIONS=279} [2022-11-21 17:03:45,691 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 1 predicate places. [2022-11-21 17:03:45,691 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 279 transitions, 586 flow [2022-11-21 17:03:45,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 230.33333333333334) internal successors, (2764), 12 states have internal predecessors, (2764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:45,694 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:03:45,694 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:03:45,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 17:03:45,695 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-21 17:03:45,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:03:45,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1991466801, now seen corresponding path program 1 times [2022-11-21 17:03:45,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:03:45,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830765509] [2022-11-21 17:03:45,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:03:45,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:03:45,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:03:45,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:03:45,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:03:45,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830765509] [2022-11-21 17:03:45,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830765509] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:03:45,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:03:45,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:03:45,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047246675] [2022-11-21 17:03:45,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:03:45,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:03:45,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:03:45,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:03:45,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:03:45,811 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 305 [2022-11-21 17:03:45,812 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 279 transitions, 586 flow. Second operand has 4 states, 4 states have (on average 281.75) internal successors, (1127), 4 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:45,813 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:03:45,813 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 305 [2022-11-21 17:03:45,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:03:45,985 INFO L130 PetriNetUnfolder]: 34/483 cut-off events. [2022-11-21 17:03:45,986 INFO L131 PetriNetUnfolder]: For 19/20 co-relation queries the response was YES. [2022-11-21 17:03:45,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 560 conditions, 483 events. 34/483 cut-off events. For 19/20 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1764 event pairs, 3 based on Foata normal form. 0/415 useless extension candidates. Maximal degree in co-relation 485. Up to 39 conditions per place. [2022-11-21 17:03:45,993 INFO L137 encePairwiseOnDemand]: 298/305 looper letters, 21 selfloop transitions, 4 changer transitions 0/289 dead transitions. [2022-11-21 17:03:45,993 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 289 transitions, 659 flow [2022-11-21 17:03:45,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:03:45,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 17:03:45,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1428 transitions. [2022-11-21 17:03:45,997 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9363934426229508 [2022-11-21 17:03:45,997 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1428 transitions. [2022-11-21 17:03:45,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1428 transitions. [2022-11-21 17:03:45,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:03:45,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1428 transitions. [2022-11-21 17:03:46,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 285.6) internal successors, (1428), 5 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:46,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:46,006 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:46,006 INFO L175 Difference]: Start difference. First operand has 286 places, 279 transitions, 586 flow. Second operand 5 states and 1428 transitions. [2022-11-21 17:03:46,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 289 transitions, 659 flow [2022-11-21 17:03:46,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 289 transitions, 636 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-11-21 17:03:46,016 INFO L231 Difference]: Finished difference. Result has 282 places, 282 transitions, 595 flow [2022-11-21 17:03:46,017 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=595, PETRI_PLACES=282, PETRI_TRANSITIONS=282} [2022-11-21 17:03:46,018 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, -3 predicate places. [2022-11-21 17:03:46,019 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 282 transitions, 595 flow [2022-11-21 17:03:46,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 281.75) internal successors, (1127), 4 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:46,020 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:03:46,020 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:03:46,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 17:03:46,021 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-21 17:03:46,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:03:46,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1277169439, now seen corresponding path program 1 times [2022-11-21 17:03:46,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:03:46,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111404743] [2022-11-21 17:03:46,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:03:46,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:03:46,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:03:56,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:03:56,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:03:56,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111404743] [2022-11-21 17:03:56,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111404743] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:03:56,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:03:56,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-21 17:03:56,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031922861] [2022-11-21 17:03:56,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:03:56,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 17:03:56,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:03:56,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 17:03:56,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2022-11-21 17:03:56,962 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 305 [2022-11-21 17:03:56,968 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 282 transitions, 595 flow. Second operand has 19 states, 19 states have (on average 211.78947368421052) internal successors, (4024), 19 states have internal predecessors, (4024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:56,968 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:03:56,968 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 305 [2022-11-21 17:03:56,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:04:05,552 INFO L130 PetriNetUnfolder]: 3593/11407 cut-off events. [2022-11-21 17:04:05,553 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-11-21 17:04:05,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17278 conditions, 11407 events. 3593/11407 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 112241 event pairs, 2883 based on Foata normal form. 0/10030 useless extension candidates. Maximal degree in co-relation 17187. Up to 4855 conditions per place. [2022-11-21 17:04:05,662 INFO L137 encePairwiseOnDemand]: 284/305 looper letters, 119 selfloop transitions, 27 changer transitions 0/345 dead transitions. [2022-11-21 17:04:05,662 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 345 transitions, 1019 flow [2022-11-21 17:04:05,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-21 17:04:05,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-21 17:04:05,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4350 transitions. [2022-11-21 17:04:05,673 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7131147540983607 [2022-11-21 17:04:05,674 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 4350 transitions. [2022-11-21 17:04:05,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 4350 transitions. [2022-11-21 17:04:05,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:04:05,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 4350 transitions. [2022-11-21 17:04:05,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 217.5) internal successors, (4350), 20 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:05,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 305.0) internal successors, (6405), 21 states have internal predecessors, (6405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:05,701 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 305.0) internal successors, (6405), 21 states have internal predecessors, (6405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:05,702 INFO L175 Difference]: Start difference. First operand has 282 places, 282 transitions, 595 flow. Second operand 20 states and 4350 transitions. [2022-11-21 17:04:05,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 345 transitions, 1019 flow [2022-11-21 17:04:05,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 345 transitions, 1017 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 17:04:05,712 INFO L231 Difference]: Finished difference. Result has 309 places, 303 transitions, 750 flow [2022-11-21 17:04:05,713 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=593, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=750, PETRI_PLACES=309, PETRI_TRANSITIONS=303} [2022-11-21 17:04:05,715 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 24 predicate places. [2022-11-21 17:04:05,715 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 303 transitions, 750 flow [2022-11-21 17:04:05,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 211.78947368421052) internal successors, (4024), 19 states have internal predecessors, (4024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:05,717 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:04:05,718 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:04:05,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 17:04:05,718 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-21 17:04:05,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:04:05,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1336554938, now seen corresponding path program 1 times [2022-11-21 17:04:05,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:04:05,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72106451] [2022-11-21 17:04:05,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:04:05,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:04:05,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:07,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:04:07,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:04:07,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72106451] [2022-11-21 17:04:07,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72106451] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:04:07,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:04:07,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 17:04:07,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337369983] [2022-11-21 17:04:07,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:04:07,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 17:04:07,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:04:07,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 17:04:07,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2022-11-21 17:04:07,771 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 305 [2022-11-21 17:04:07,775 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 303 transitions, 750 flow. Second operand has 20 states, 20 states have (on average 203.1) internal successors, (4062), 20 states have internal predecessors, (4062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:07,775 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:04:07,775 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 305 [2022-11-21 17:04:07,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:04:12,199 INFO L130 PetriNetUnfolder]: 4210/14679 cut-off events. [2022-11-21 17:04:12,199 INFO L131 PetriNetUnfolder]: For 1230/1234 co-relation queries the response was YES. [2022-11-21 17:04:12,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23085 conditions, 14679 events. 4210/14679 cut-off events. For 1230/1234 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 153684 event pairs, 964 based on Foata normal form. 102/13199 useless extension candidates. Maximal degree in co-relation 22970. Up to 4446 conditions per place. [2022-11-21 17:04:12,426 INFO L137 encePairwiseOnDemand]: 283/305 looper letters, 190 selfloop transitions, 44 changer transitions 0/426 dead transitions. [2022-11-21 17:04:12,426 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 426 transitions, 1522 flow [2022-11-21 17:04:12,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-21 17:04:12,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-21 17:04:12,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4644 transitions. [2022-11-21 17:04:12,439 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6921013412816691 [2022-11-21 17:04:12,443 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4644 transitions. [2022-11-21 17:04:12,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4644 transitions. [2022-11-21 17:04:12,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:04:12,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4644 transitions. [2022-11-21 17:04:12,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 211.0909090909091) internal successors, (4644), 22 states have internal predecessors, (4644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:12,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 305.0) internal successors, (7015), 23 states have internal predecessors, (7015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:12,481 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 305.0) internal successors, (7015), 23 states have internal predecessors, (7015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:12,489 INFO L175 Difference]: Start difference. First operand has 309 places, 303 transitions, 750 flow. Second operand 22 states and 4644 transitions. [2022-11-21 17:04:12,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 426 transitions, 1522 flow [2022-11-21 17:04:12,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 426 transitions, 1509 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-21 17:04:12,518 INFO L231 Difference]: Finished difference. Result has 330 places, 332 transitions, 995 flow [2022-11-21 17:04:12,519 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=737, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=995, PETRI_PLACES=330, PETRI_TRANSITIONS=332} [2022-11-21 17:04:12,520 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 45 predicate places. [2022-11-21 17:04:12,521 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 332 transitions, 995 flow [2022-11-21 17:04:12,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 203.1) internal successors, (4062), 20 states have internal predecessors, (4062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:12,523 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:04:12,523 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:04:12,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 17:04:12,523 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-21 17:04:12,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:04:12,524 INFO L85 PathProgramCache]: Analyzing trace with hash 449135622, now seen corresponding path program 1 times [2022-11-21 17:04:12,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:04:12,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570030693] [2022-11-21 17:04:12,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:04:12,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:04:12,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:12,604 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:04:12,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:04:12,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570030693] [2022-11-21 17:04:12,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570030693] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:04:12,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:04:12,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:04:12,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895756357] [2022-11-21 17:04:12,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:04:12,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:04:12,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:04:12,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:04:12,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:04:12,609 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 305 [2022-11-21 17:04:12,611 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 332 transitions, 995 flow. Second operand has 4 states, 4 states have (on average 283.25) internal successors, (1133), 4 states have internal predecessors, (1133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:12,611 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:04:12,611 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 305 [2022-11-21 17:04:12,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:04:13,088 INFO L130 PetriNetUnfolder]: 168/2271 cut-off events. [2022-11-21 17:04:13,088 INFO L131 PetriNetUnfolder]: For 258/259 co-relation queries the response was YES. [2022-11-21 17:04:13,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3089 conditions, 2271 events. 168/2271 cut-off events. For 258/259 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 19823 event pairs, 18 based on Foata normal form. 19/2042 useless extension candidates. Maximal degree in co-relation 2996. Up to 147 conditions per place. [2022-11-21 17:04:13,107 INFO L137 encePairwiseOnDemand]: 299/305 looper letters, 13 selfloop transitions, 8 changer transitions 0/335 dead transitions. [2022-11-21 17:04:13,107 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 335 transitions, 1044 flow [2022-11-21 17:04:13,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:04:13,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 17:04:13,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1419 transitions. [2022-11-21 17:04:13,111 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9304918032786885 [2022-11-21 17:04:13,111 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1419 transitions. [2022-11-21 17:04:13,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1419 transitions. [2022-11-21 17:04:13,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:04:13,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1419 transitions. [2022-11-21 17:04:13,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 283.8) internal successors, (1419), 5 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:13,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:13,119 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:13,119 INFO L175 Difference]: Start difference. First operand has 330 places, 332 transitions, 995 flow. Second operand 5 states and 1419 transitions. [2022-11-21 17:04:13,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 335 transitions, 1044 flow [2022-11-21 17:04:13,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 335 transitions, 1011 flow, removed 9 selfloop flow, removed 8 redundant places. [2022-11-21 17:04:13,135 INFO L231 Difference]: Finished difference. Result has 326 places, 332 transitions, 982 flow [2022-11-21 17:04:13,136 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=958, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=982, PETRI_PLACES=326, PETRI_TRANSITIONS=332} [2022-11-21 17:04:13,138 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 41 predicate places. [2022-11-21 17:04:13,138 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 332 transitions, 982 flow [2022-11-21 17:04:13,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 283.25) internal successors, (1133), 4 states have internal predecessors, (1133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:13,139 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:04:13,139 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:04:13,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 17:04:13,140 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-21 17:04:13,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:04:13,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1038303261, now seen corresponding path program 1 times [2022-11-21 17:04:13,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:04:13,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460083403] [2022-11-21 17:04:13,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:04:13,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:04:13,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:13,256 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:04:13,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:04:13,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460083403] [2022-11-21 17:04:13,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460083403] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:04:13,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440028917] [2022-11-21 17:04:13,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:04:13,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:04:13,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcffb1-8cf5-46fd-a088-f2ad28dfa88a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:04:13,262 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcffb1-8cf5-46fd-a088-f2ad28dfa88a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:04:13,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcffb1-8cf5-46fd-a088-f2ad28dfa88a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 17:04:13,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:13,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 17:04:13,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:04:13,552 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:04:13,553 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:04:13,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440028917] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:04:13,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:04:13,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 17:04:13,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441236441] [2022-11-21 17:04:13,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:04:13,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:04:13,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:04:13,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:04:13,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:04:13,557 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 305 [2022-11-21 17:04:13,559 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 332 transitions, 982 flow. Second operand has 6 states, 6 states have (on average 282.3333333333333) internal successors, (1694), 6 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:13,559 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:04:13,559 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 305 [2022-11-21 17:04:13,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:04:14,192 INFO L130 PetriNetUnfolder]: 166/2252 cut-off events. [2022-11-21 17:04:14,193 INFO L131 PetriNetUnfolder]: For 402/403 co-relation queries the response was YES. [2022-11-21 17:04:14,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3165 conditions, 2252 events. 166/2252 cut-off events. For 402/403 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 19518 event pairs, 3 based on Foata normal form. 19/2026 useless extension candidates. Maximal degree in co-relation 3079. Up to 99 conditions per place. [2022-11-21 17:04:14,217 INFO L137 encePairwiseOnDemand]: 300/305 looper letters, 19 selfloop transitions, 6 changer transitions 0/339 dead transitions. [2022-11-21 17:04:14,217 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 339 transitions, 1049 flow [2022-11-21 17:04:14,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 17:04:14,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 17:04:14,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1986 transitions. [2022-11-21 17:04:14,223 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9302107728337237 [2022-11-21 17:04:14,223 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1986 transitions. [2022-11-21 17:04:14,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1986 transitions. [2022-11-21 17:04:14,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:04:14,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1986 transitions. [2022-11-21 17:04:14,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 283.7142857142857) internal successors, (1986), 7 states have internal predecessors, (1986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:14,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 305.0) internal successors, (2440), 8 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:14,236 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 305.0) internal successors, (2440), 8 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:14,236 INFO L175 Difference]: Start difference. First operand has 326 places, 332 transitions, 982 flow. Second operand 7 states and 1986 transitions. [2022-11-21 17:04:14,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 339 transitions, 1049 flow [2022-11-21 17:04:14,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 339 transitions, 1037 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 17:04:14,248 INFO L231 Difference]: Finished difference. Result has 328 places, 331 transitions, 978 flow [2022-11-21 17:04:14,251 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=966, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=978, PETRI_PLACES=328, PETRI_TRANSITIONS=331} [2022-11-21 17:04:14,254 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 43 predicate places. [2022-11-21 17:04:14,255 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 331 transitions, 978 flow [2022-11-21 17:04:14,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 282.3333333333333) internal successors, (1694), 6 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:14,256 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:04:14,256 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:04:14,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcffb1-8cf5-46fd-a088-f2ad28dfa88a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 17:04:14,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcffb1-8cf5-46fd-a088-f2ad28dfa88a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:04:14,464 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-21 17:04:14,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:04:14,467 INFO L85 PathProgramCache]: Analyzing trace with hash 450066360, now seen corresponding path program 1 times [2022-11-21 17:04:14,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:04:14,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213766127] [2022-11-21 17:04:14,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:04:14,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:04:14,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:14,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:04:14,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:04:14,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213766127] [2022-11-21 17:04:14,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213766127] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:04:14,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:04:14,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:04:14,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913698670] [2022-11-21 17:04:14,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:04:14,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:04:14,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:04:14,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:04:14,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:04:14,655 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 305 [2022-11-21 17:04:14,656 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 331 transitions, 978 flow. Second operand has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:14,656 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:04:14,656 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 305 [2022-11-21 17:04:14,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:04:14,968 INFO L130 PetriNetUnfolder]: 71/1163 cut-off events. [2022-11-21 17:04:14,968 INFO L131 PetriNetUnfolder]: For 121/122 co-relation queries the response was YES. [2022-11-21 17:04:14,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1459 conditions, 1163 events. 71/1163 cut-off events. For 121/122 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4940 event pairs, 5 based on Foata normal form. 0/1014 useless extension candidates. Maximal degree in co-relation 1436. Up to 38 conditions per place. [2022-11-21 17:04:14,982 INFO L137 encePairwiseOnDemand]: 301/305 looper letters, 10 selfloop transitions, 3 changer transitions 0/304 dead transitions. [2022-11-21 17:04:14,983 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 304 transitions, 851 flow [2022-11-21 17:04:14,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:04:14,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 17:04:14,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 872 transitions. [2022-11-21 17:04:14,986 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9530054644808743 [2022-11-21 17:04:14,986 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 872 transitions. [2022-11-21 17:04:14,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 872 transitions. [2022-11-21 17:04:14,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:04:14,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 872 transitions. [2022-11-21 17:04:14,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 290.6666666666667) internal successors, (872), 3 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:14,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:14,992 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:14,992 INFO L175 Difference]: Start difference. First operand has 328 places, 331 transitions, 978 flow. Second operand 3 states and 872 transitions. [2022-11-21 17:04:14,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 304 transitions, 851 flow [2022-11-21 17:04:14,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 304 transitions, 767 flow, removed 2 selfloop flow, removed 21 redundant places. [2022-11-21 17:04:15,001 INFO L231 Difference]: Finished difference. Result has 305 places, 301 transitions, 745 flow [2022-11-21 17:04:15,001 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=745, PETRI_PLACES=305, PETRI_TRANSITIONS=301} [2022-11-21 17:04:15,002 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 20 predicate places. [2022-11-21 17:04:15,002 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 301 transitions, 745 flow [2022-11-21 17:04:15,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:15,003 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:04:15,003 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:04:15,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 17:04:15,004 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-21 17:04:15,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:04:15,004 INFO L85 PathProgramCache]: Analyzing trace with hash -63631832, now seen corresponding path program 1 times [2022-11-21 17:04:15,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:04:15,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349012355] [2022-11-21 17:04:15,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:04:15,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:04:15,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:18,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:04:18,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:04:18,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349012355] [2022-11-21 17:04:18,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349012355] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:04:18,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:04:18,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-21 17:04:18,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830646181] [2022-11-21 17:04:18,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:04:18,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 17:04:18,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:04:18,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 17:04:18,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-11-21 17:04:18,911 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 305 [2022-11-21 17:04:18,916 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 301 transitions, 745 flow. Second operand has 18 states, 18 states have (on average 212.05555555555554) internal successors, (3817), 18 states have internal predecessors, (3817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:18,917 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:04:18,917 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 305 [2022-11-21 17:04:18,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:04:22,257 INFO L130 PetriNetUnfolder]: 1698/7570 cut-off events. [2022-11-21 17:04:22,258 INFO L131 PetriNetUnfolder]: For 347/351 co-relation queries the response was YES. [2022-11-21 17:04:22,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11339 conditions, 7570 events. 1698/7570 cut-off events. For 347/351 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 70369 event pairs, 1402 based on Foata normal form. 2/6779 useless extension candidates. Maximal degree in co-relation 11322. Up to 2632 conditions per place. [2022-11-21 17:04:22,315 INFO L137 encePairwiseOnDemand]: 283/305 looper letters, 92 selfloop transitions, 33 changer transitions 0/326 dead transitions. [2022-11-21 17:04:22,315 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 326 transitions, 1061 flow [2022-11-21 17:04:22,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-21 17:04:22,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-21 17:04:22,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4324 transitions. [2022-11-21 17:04:22,330 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7088524590163935 [2022-11-21 17:04:22,331 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 4324 transitions. [2022-11-21 17:04:22,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 4324 transitions. [2022-11-21 17:04:22,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:04:22,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 4324 transitions. [2022-11-21 17:04:22,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 216.2) internal successors, (4324), 20 states have internal predecessors, (4324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:22,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 305.0) internal successors, (6405), 21 states have internal predecessors, (6405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:22,356 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 305.0) internal successors, (6405), 21 states have internal predecessors, (6405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:22,357 INFO L175 Difference]: Start difference. First operand has 305 places, 301 transitions, 745 flow. Second operand 20 states and 4324 transitions. [2022-11-21 17:04:22,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 326 transitions, 1061 flow [2022-11-21 17:04:22,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 326 transitions, 1058 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 17:04:22,368 INFO L231 Difference]: Finished difference. Result has 328 places, 311 transitions, 881 flow [2022-11-21 17:04:22,369 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=742, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=881, PETRI_PLACES=328, PETRI_TRANSITIONS=311} [2022-11-21 17:04:22,372 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 43 predicate places. [2022-11-21 17:04:22,372 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 311 transitions, 881 flow [2022-11-21 17:04:22,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 212.05555555555554) internal successors, (3817), 18 states have internal predecessors, (3817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:22,374 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:04:22,374 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:04:22,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 17:04:22,375 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-21 17:04:22,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:04:22,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1270878461, now seen corresponding path program 1 times [2022-11-21 17:04:22,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:04:22,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753193755] [2022-11-21 17:04:22,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:04:22,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:04:22,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:23,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:04:23,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:04:23,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753193755] [2022-11-21 17:04:23,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753193755] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:04:23,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:04:23,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-21 17:04:23,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507347483] [2022-11-21 17:04:23,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:04:23,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 17:04:23,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:04:23,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 17:04:23,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2022-11-21 17:04:23,709 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 305 [2022-11-21 17:04:23,714 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 311 transitions, 881 flow. Second operand has 19 states, 19 states have (on average 203.3684210526316) internal successors, (3864), 19 states have internal predecessors, (3864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:23,714 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:04:23,714 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 305 [2022-11-21 17:04:23,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:04:26,350 INFO L130 PetriNetUnfolder]: 1729/7723 cut-off events. [2022-11-21 17:04:26,350 INFO L131 PetriNetUnfolder]: For 752/756 co-relation queries the response was YES. [2022-11-21 17:04:26,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11900 conditions, 7723 events. 1729/7723 cut-off events. For 752/756 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 71673 event pairs, 848 based on Foata normal form. 6/6940 useless extension candidates. Maximal degree in co-relation 11878. Up to 2610 conditions per place. [2022-11-21 17:04:26,425 INFO L137 encePairwiseOnDemand]: 283/305 looper letters, 115 selfloop transitions, 43 changer transitions 0/352 dead transitions. [2022-11-21 17:04:26,426 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 352 transitions, 1341 flow [2022-11-21 17:04:26,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-21 17:04:26,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-21 17:04:26,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4363 transitions. [2022-11-21 17:04:26,437 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6811865729898516 [2022-11-21 17:04:26,437 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4363 transitions. [2022-11-21 17:04:26,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4363 transitions. [2022-11-21 17:04:26,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:04:26,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4363 transitions. [2022-11-21 17:04:26,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 207.76190476190476) internal successors, (4363), 21 states have internal predecessors, (4363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:26,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 305.0) internal successors, (6710), 22 states have internal predecessors, (6710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:26,463 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 305.0) internal successors, (6710), 22 states have internal predecessors, (6710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:26,463 INFO L175 Difference]: Start difference. First operand has 328 places, 311 transitions, 881 flow. Second operand 21 states and 4363 transitions. [2022-11-21 17:04:26,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 352 transitions, 1341 flow [2022-11-21 17:04:26,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 352 transitions, 1309 flow, removed 2 selfloop flow, removed 12 redundant places. [2022-11-21 17:04:26,476 INFO L231 Difference]: Finished difference. Result has 343 places, 320 transitions, 1033 flow [2022-11-21 17:04:26,477 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=849, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1033, PETRI_PLACES=343, PETRI_TRANSITIONS=320} [2022-11-21 17:04:26,478 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 58 predicate places. [2022-11-21 17:04:26,479 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 320 transitions, 1033 flow [2022-11-21 17:04:26,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 203.3684210526316) internal successors, (3864), 19 states have internal predecessors, (3864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:26,480 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:04:26,481 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:04:26,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 17:04:26,481 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-21 17:04:26,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:04:26,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1877053161, now seen corresponding path program 2 times [2022-11-21 17:04:26,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:04:26,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544946917] [2022-11-21 17:04:26,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:04:26,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:04:26,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:27,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:04:27,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:04:27,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544946917] [2022-11-21 17:04:27,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544946917] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:04:27,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:04:27,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-21 17:04:27,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017328293] [2022-11-21 17:04:27,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:04:27,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 17:04:27,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:04:27,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 17:04:27,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2022-11-21 17:04:27,824 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 305 [2022-11-21 17:04:27,828 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 320 transitions, 1033 flow. Second operand has 19 states, 19 states have (on average 203.3684210526316) internal successors, (3864), 19 states have internal predecessors, (3864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:27,828 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:04:27,828 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 305 [2022-11-21 17:04:27,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:04:30,548 INFO L130 PetriNetUnfolder]: 1722/7629 cut-off events. [2022-11-21 17:04:30,548 INFO L131 PetriNetUnfolder]: For 917/921 co-relation queries the response was YES. [2022-11-21 17:04:30,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11880 conditions, 7629 events. 1722/7629 cut-off events. For 917/921 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 70807 event pairs, 852 based on Foata normal form. 6/6847 useless extension candidates. Maximal degree in co-relation 11851. Up to 2530 conditions per place. [2022-11-21 17:04:30,638 INFO L137 encePairwiseOnDemand]: 285/305 looper letters, 105 selfloop transitions, 37 changer transitions 0/336 dead transitions. [2022-11-21 17:04:30,638 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 336 transitions, 1369 flow [2022-11-21 17:04:30,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-21 17:04:30,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-21 17:04:30,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3531 transitions. [2022-11-21 17:04:30,778 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6810028929604629 [2022-11-21 17:04:30,778 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3531 transitions. [2022-11-21 17:04:30,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3531 transitions. [2022-11-21 17:04:30,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:04:30,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3531 transitions. [2022-11-21 17:04:30,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 207.7058823529412) internal successors, (3531), 17 states have internal predecessors, (3531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:30,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 305.0) internal successors, (5490), 18 states have internal predecessors, (5490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:30,800 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 305.0) internal successors, (5490), 18 states have internal predecessors, (5490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:30,800 INFO L175 Difference]: Start difference. First operand has 343 places, 320 transitions, 1033 flow. Second operand 17 states and 3531 transitions. [2022-11-21 17:04:30,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 336 transitions, 1369 flow [2022-11-21 17:04:30,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 336 transitions, 1339 flow, removed 5 selfloop flow, removed 10 redundant places. [2022-11-21 17:04:30,812 INFO L231 Difference]: Finished difference. Result has 347 places, 318 transitions, 1061 flow [2022-11-21 17:04:30,814 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=987, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1061, PETRI_PLACES=347, PETRI_TRANSITIONS=318} [2022-11-21 17:04:30,814 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 62 predicate places. [2022-11-21 17:04:30,815 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 318 transitions, 1061 flow [2022-11-21 17:04:30,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 203.3684210526316) internal successors, (3864), 19 states have internal predecessors, (3864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:30,816 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:04:30,816 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:04:30,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 17:04:30,817 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-21 17:04:30,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:04:30,818 INFO L85 PathProgramCache]: Analyzing trace with hash -539717566, now seen corresponding path program 1 times [2022-11-21 17:04:30,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:04:30,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103388900] [2022-11-21 17:04:30,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:04:30,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:04:30,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:30,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:04:30,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:04:30,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103388900] [2022-11-21 17:04:30,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103388900] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:04:30,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:04:30,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:04:30,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646550603] [2022-11-21 17:04:30,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:04:30,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:04:30,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:04:30,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:04:30,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:04:30,902 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 305 [2022-11-21 17:04:30,903 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 318 transitions, 1061 flow. Second operand has 4 states, 4 states have (on average 277.5) internal successors, (1110), 4 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:30,903 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:04:30,903 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 305 [2022-11-21 17:04:30,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:04:31,265 INFO L130 PetriNetUnfolder]: 113/1529 cut-off events. [2022-11-21 17:04:31,265 INFO L131 PetriNetUnfolder]: For 207/207 co-relation queries the response was YES. [2022-11-21 17:04:31,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2314 conditions, 1529 events. 113/1529 cut-off events. For 207/207 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 6899 event pairs, 31 based on Foata normal form. 0/1372 useless extension candidates. Maximal degree in co-relation 2285. Up to 191 conditions per place. [2022-11-21 17:04:31,287 INFO L137 encePairwiseOnDemand]: 296/305 looper letters, 27 selfloop transitions, 4 changer transitions 0/330 dead transitions. [2022-11-21 17:04:31,287 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 330 transitions, 1153 flow [2022-11-21 17:04:31,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:04:31,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 17:04:31,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1416 transitions. [2022-11-21 17:04:31,290 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9285245901639344 [2022-11-21 17:04:31,290 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1416 transitions. [2022-11-21 17:04:31,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1416 transitions. [2022-11-21 17:04:31,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:04:31,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1416 transitions. [2022-11-21 17:04:31,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 283.2) internal successors, (1416), 5 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:31,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:31,296 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:31,297 INFO L175 Difference]: Start difference. First operand has 347 places, 318 transitions, 1061 flow. Second operand 5 states and 1416 transitions. [2022-11-21 17:04:31,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 330 transitions, 1153 flow [2022-11-21 17:04:31,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 330 transitions, 1079 flow, removed 0 selfloop flow, removed 16 redundant places. [2022-11-21 17:04:31,306 INFO L231 Difference]: Finished difference. Result has 338 places, 321 transitions, 1023 flow [2022-11-21 17:04:31,306 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=987, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1023, PETRI_PLACES=338, PETRI_TRANSITIONS=321} [2022-11-21 17:04:31,307 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 53 predicate places. [2022-11-21 17:04:31,307 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 321 transitions, 1023 flow [2022-11-21 17:04:31,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 277.5) internal successors, (1110), 4 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:31,308 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:04:31,308 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:04:31,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 17:04:31,308 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-21 17:04:31,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:04:31,309 INFO L85 PathProgramCache]: Analyzing trace with hash -870761161, now seen corresponding path program 1 times [2022-11-21 17:04:31,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:04:31,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034109865] [2022-11-21 17:04:31,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:04:31,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:04:31,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:31,383 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:04:31,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:04:31,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034109865] [2022-11-21 17:04:31,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034109865] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:04:31,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:04:31,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:04:31,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060383034] [2022-11-21 17:04:31,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:04:31,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:04:31,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:04:31,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:04:31,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:04:31,391 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 305 [2022-11-21 17:04:31,392 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 321 transitions, 1023 flow. Second operand has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:31,392 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:04:31,392 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 305 [2022-11-21 17:04:31,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:04:31,687 INFO L130 PetriNetUnfolder]: 109/1505 cut-off events. [2022-11-21 17:04:31,688 INFO L131 PetriNetUnfolder]: For 193/193 co-relation queries the response was YES. [2022-11-21 17:04:31,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2312 conditions, 1505 events. 109/1505 cut-off events. For 193/193 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 6750 event pairs, 10 based on Foata normal form. 20/1418 useless extension candidates. Maximal degree in co-relation 2280. Up to 80 conditions per place. [2022-11-21 17:04:31,701 INFO L137 encePairwiseOnDemand]: 298/305 looper letters, 16 selfloop transitions, 8 changer transitions 0/323 dead transitions. [2022-11-21 17:04:31,701 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 323 transitions, 1077 flow [2022-11-21 17:04:31,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:04:31,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 17:04:31,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1403 transitions. [2022-11-21 17:04:31,704 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.92 [2022-11-21 17:04:31,705 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1403 transitions. [2022-11-21 17:04:31,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1403 transitions. [2022-11-21 17:04:31,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:04:31,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1403 transitions. [2022-11-21 17:04:31,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 280.6) internal successors, (1403), 5 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:31,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:31,711 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:31,711 INFO L175 Difference]: Start difference. First operand has 338 places, 321 transitions, 1023 flow. Second operand 5 states and 1403 transitions. [2022-11-21 17:04:31,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 323 transitions, 1077 flow [2022-11-21 17:04:31,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 323 transitions, 1075 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 17:04:31,720 INFO L231 Difference]: Finished difference. Result has 340 places, 320 transitions, 1037 flow [2022-11-21 17:04:31,721 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=1013, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1037, PETRI_PLACES=340, PETRI_TRANSITIONS=320} [2022-11-21 17:04:31,722 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 55 predicate places. [2022-11-21 17:04:31,722 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 320 transitions, 1037 flow [2022-11-21 17:04:31,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:31,723 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:04:31,723 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:04:31,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 17:04:31,723 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-21 17:04:31,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:04:31,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1223791416, now seen corresponding path program 1 times [2022-11-21 17:04:31,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:04:31,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954529370] [2022-11-21 17:04:31,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:04:31,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:04:31,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:31,840 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:04:31,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:04:31,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954529370] [2022-11-21 17:04:31,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954529370] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:04:31,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941588482] [2022-11-21 17:04:31,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:04:31,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:04:31,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcffb1-8cf5-46fd-a088-f2ad28dfa88a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:04:31,842 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcffb1-8cf5-46fd-a088-f2ad28dfa88a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:04:31,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcffb1-8cf5-46fd-a088-f2ad28dfa88a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 17:04:32,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:32,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 17:04:32,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:04:32,070 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:04:32,070 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:04:32,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941588482] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:04:32,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:04:32,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 17:04:32,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172805738] [2022-11-21 17:04:32,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:04:32,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:04:32,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:04:32,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:04:32,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:04:32,075 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 305 [2022-11-21 17:04:32,077 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 320 transitions, 1037 flow. Second operand has 6 states, 6 states have (on average 278.1666666666667) internal successors, (1669), 6 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:32,077 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:04:32,078 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 305 [2022-11-21 17:04:32,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:04:32,410 INFO L130 PetriNetUnfolder]: 105/1481 cut-off events. [2022-11-21 17:04:32,410 INFO L131 PetriNetUnfolder]: For 253/253 co-relation queries the response was YES. [2022-11-21 17:04:32,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2307 conditions, 1481 events. 105/1481 cut-off events. For 253/253 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 6587 event pairs, 3 based on Foata normal form. 20/1394 useless extension candidates. Maximal degree in co-relation 2275. Up to 84 conditions per place. [2022-11-21 17:04:32,423 INFO L137 encePairwiseOnDemand]: 299/305 looper letters, 23 selfloop transitions, 6 changer transitions 0/328 dead transitions. [2022-11-21 17:04:32,423 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 328 transitions, 1117 flow [2022-11-21 17:04:32,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 17:04:32,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 17:04:32,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1963 transitions. [2022-11-21 17:04:32,427 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9194379391100702 [2022-11-21 17:04:32,427 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1963 transitions. [2022-11-21 17:04:32,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1963 transitions. [2022-11-21 17:04:32,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:04:32,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1963 transitions. [2022-11-21 17:04:32,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 280.42857142857144) internal successors, (1963), 7 states have internal predecessors, (1963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:32,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 305.0) internal successors, (2440), 8 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:32,436 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 305.0) internal successors, (2440), 8 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:32,436 INFO L175 Difference]: Start difference. First operand has 340 places, 320 transitions, 1037 flow. Second operand 7 states and 1963 transitions. [2022-11-21 17:04:32,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 328 transitions, 1117 flow [2022-11-21 17:04:32,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 328 transitions, 1105 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 17:04:32,446 INFO L231 Difference]: Finished difference. Result has 341 places, 318 transitions, 1029 flow [2022-11-21 17:04:32,447 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=1017, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1029, PETRI_PLACES=341, PETRI_TRANSITIONS=318} [2022-11-21 17:04:32,447 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 56 predicate places. [2022-11-21 17:04:32,448 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 318 transitions, 1029 flow [2022-11-21 17:04:32,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 278.1666666666667) internal successors, (1669), 6 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:32,448 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:04:32,449 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:04:32,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcffb1-8cf5-46fd-a088-f2ad28dfa88a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 17:04:32,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcffb1-8cf5-46fd-a088-f2ad28dfa88a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-21 17:04:32,655 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-21 17:04:32,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:04:32,655 INFO L85 PathProgramCache]: Analyzing trace with hash -273658069, now seen corresponding path program 1 times [2022-11-21 17:04:32,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:04:32,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123885272] [2022-11-21 17:04:32,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:04:32,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:04:32,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:33,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:04:33,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:04:33,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123885272] [2022-11-21 17:04:33,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123885272] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:04:33,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:04:33,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-21 17:04:33,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672171844] [2022-11-21 17:04:33,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:04:33,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-21 17:04:33,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:04:33,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-21 17:04:33,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2022-11-21 17:04:33,804 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 305 [2022-11-21 17:04:33,807 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 318 transitions, 1029 flow. Second operand has 17 states, 17 states have (on average 218.8235294117647) internal successors, (3720), 17 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:33,807 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:04:33,807 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 305 [2022-11-21 17:04:33,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:04:36,163 INFO L130 PetriNetUnfolder]: 1763/7839 cut-off events. [2022-11-21 17:04:36,164 INFO L131 PetriNetUnfolder]: For 1105/1109 co-relation queries the response was YES. [2022-11-21 17:04:36,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12421 conditions, 7839 events. 1763/7839 cut-off events. For 1105/1109 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 70413 event pairs, 1362 based on Foata normal form. 2/7129 useless extension candidates. Maximal degree in co-relation 12388. Up to 2756 conditions per place. [2022-11-21 17:04:36,230 INFO L137 encePairwiseOnDemand]: 289/305 looper letters, 85 selfloop transitions, 29 changer transitions 0/326 dead transitions. [2022-11-21 17:04:36,230 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 326 transitions, 1277 flow [2022-11-21 17:04:36,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 17:04:36,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-21 17:04:36,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3341 transitions. [2022-11-21 17:04:36,235 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7302732240437159 [2022-11-21 17:04:36,235 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3341 transitions. [2022-11-21 17:04:36,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3341 transitions. [2022-11-21 17:04:36,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:04:36,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3341 transitions. [2022-11-21 17:04:36,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 222.73333333333332) internal successors, (3341), 15 states have internal predecessors, (3341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:36,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 305.0) internal successors, (4880), 16 states have internal predecessors, (4880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:36,252 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 305.0) internal successors, (4880), 16 states have internal predecessors, (4880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:36,252 INFO L175 Difference]: Start difference. First operand has 341 places, 318 transitions, 1029 flow. Second operand 15 states and 3341 transitions. [2022-11-21 17:04:36,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 326 transitions, 1277 flow [2022-11-21 17:04:36,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 326 transitions, 1262 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-21 17:04:36,264 INFO L231 Difference]: Finished difference. Result has 353 places, 321 transitions, 1108 flow [2022-11-21 17:04:36,265 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=1006, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1108, PETRI_PLACES=353, PETRI_TRANSITIONS=321} [2022-11-21 17:04:36,265 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 68 predicate places. [2022-11-21 17:04:36,266 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 321 transitions, 1108 flow [2022-11-21 17:04:36,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 218.8235294117647) internal successors, (3720), 17 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:36,267 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:04:36,267 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:04:36,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-21 17:04:36,268 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-21 17:04:36,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:04:36,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1528622662, now seen corresponding path program 1 times [2022-11-21 17:04:36,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:04:36,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809655442] [2022-11-21 17:04:36,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:04:36,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:04:36,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:42,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:04:42,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:04:42,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809655442] [2022-11-21 17:04:42,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809655442] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:04:42,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:04:42,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 17:04:42,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862901796] [2022-11-21 17:04:42,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:04:42,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 17:04:42,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:04:42,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 17:04:42,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2022-11-21 17:04:42,134 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 305 [2022-11-21 17:04:42,138 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 321 transitions, 1108 flow. Second operand has 20 states, 20 states have (on average 209.8) internal successors, (4196), 20 states have internal predecessors, (4196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:42,139 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:04:42,139 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 305 [2022-11-21 17:04:42,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:04:46,393 INFO L130 PetriNetUnfolder]: 1622/7688 cut-off events. [2022-11-21 17:04:46,393 INFO L131 PetriNetUnfolder]: For 1102/1106 co-relation queries the response was YES. [2022-11-21 17:04:46,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12169 conditions, 7688 events. 1622/7688 cut-off events. For 1102/1106 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 70297 event pairs, 1322 based on Foata normal form. 8/7015 useless extension candidates. Maximal degree in co-relation 12134. Up to 2493 conditions per place. [2022-11-21 17:04:46,477 INFO L137 encePairwiseOnDemand]: 286/305 looper letters, 95 selfloop transitions, 42 changer transitions 0/342 dead transitions. [2022-11-21 17:04:46,477 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 342 transitions, 1451 flow [2022-11-21 17:04:46,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-21 17:04:46,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-21 17:04:46,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4259 transitions. [2022-11-21 17:04:46,484 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6981967213114754 [2022-11-21 17:04:46,484 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 4259 transitions. [2022-11-21 17:04:46,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 4259 transitions. [2022-11-21 17:04:46,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:04:46,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 4259 transitions. [2022-11-21 17:04:46,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 212.95) internal successors, (4259), 20 states have internal predecessors, (4259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:46,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 305.0) internal successors, (6405), 21 states have internal predecessors, (6405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:46,504 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 305.0) internal successors, (6405), 21 states have internal predecessors, (6405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:46,505 INFO L175 Difference]: Start difference. First operand has 353 places, 321 transitions, 1108 flow. Second operand 20 states and 4259 transitions. [2022-11-21 17:04:46,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 342 transitions, 1451 flow [2022-11-21 17:04:46,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 342 transitions, 1424 flow, removed 2 selfloop flow, removed 10 redundant places. [2022-11-21 17:04:46,518 INFO L231 Difference]: Finished difference. Result has 365 places, 324 transitions, 1223 flow [2022-11-21 17:04:46,519 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=1076, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1223, PETRI_PLACES=365, PETRI_TRANSITIONS=324} [2022-11-21 17:04:46,519 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 80 predicate places. [2022-11-21 17:04:46,519 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 324 transitions, 1223 flow [2022-11-21 17:04:46,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 209.8) internal successors, (4196), 20 states have internal predecessors, (4196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:46,521 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:04:46,521 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:04:46,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-21 17:04:46,521 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-21 17:04:46,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:04:46,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1387768118, now seen corresponding path program 2 times [2022-11-21 17:04:46,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:04:46,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732254056] [2022-11-21 17:04:46,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:04:46,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:04:46,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:48,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:04:48,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:04:48,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732254056] [2022-11-21 17:04:48,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732254056] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:04:48,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:04:48,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-21 17:04:48,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157674729] [2022-11-21 17:04:48,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:04:48,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 17:04:48,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:04:48,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 17:04:48,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2022-11-21 17:04:48,151 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 305 [2022-11-21 17:04:48,156 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 324 transitions, 1223 flow. Second operand has 18 states, 18 states have (on average 210.11111111111111) internal successors, (3782), 18 states have internal predecessors, (3782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:48,156 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:04:48,157 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 305 [2022-11-21 17:04:48,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:04:50,867 INFO L130 PetriNetUnfolder]: 1618/7707 cut-off events. [2022-11-21 17:04:50,867 INFO L131 PetriNetUnfolder]: For 1364/1368 co-relation queries the response was YES. [2022-11-21 17:04:50,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12326 conditions, 7707 events. 1618/7707 cut-off events. For 1364/1368 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 70993 event pairs, 787 based on Foata normal form. 3/7028 useless extension candidates. Maximal degree in co-relation 12288. Up to 2417 conditions per place. [2022-11-21 17:04:50,959 INFO L137 encePairwiseOnDemand]: 288/305 looper letters, 95 selfloop transitions, 31 changer transitions 0/331 dead transitions. [2022-11-21 17:04:50,959 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 331 transitions, 1493 flow [2022-11-21 17:04:50,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 17:04:50,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-21 17:04:50,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2995 transitions. [2022-11-21 17:04:50,966 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7014051522248244 [2022-11-21 17:04:50,967 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2995 transitions. [2022-11-21 17:04:50,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2995 transitions. [2022-11-21 17:04:50,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:04:50,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2995 transitions. [2022-11-21 17:04:50,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 213.92857142857142) internal successors, (2995), 14 states have internal predecessors, (2995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:50,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 305.0) internal successors, (4575), 15 states have internal predecessors, (4575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:50,982 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 305.0) internal successors, (4575), 15 states have internal predecessors, (4575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:50,984 INFO L175 Difference]: Start difference. First operand has 365 places, 324 transitions, 1223 flow. Second operand 14 states and 2995 transitions. [2022-11-21 17:04:50,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 331 transitions, 1493 flow [2022-11-21 17:04:50,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 331 transitions, 1425 flow, removed 5 selfloop flow, removed 19 redundant places. [2022-11-21 17:04:51,001 INFO L231 Difference]: Finished difference. Result has 357 places, 321 transitions, 1205 flow [2022-11-21 17:04:51,002 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=1143, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1205, PETRI_PLACES=357, PETRI_TRANSITIONS=321} [2022-11-21 17:04:51,002 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 72 predicate places. [2022-11-21 17:04:51,003 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 321 transitions, 1205 flow [2022-11-21 17:04:51,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 210.11111111111111) internal successors, (3782), 18 states have internal predecessors, (3782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:51,004 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:04:51,004 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:04:51,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-21 17:04:51,005 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-21 17:04:51,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:04:51,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1693646516, now seen corresponding path program 1 times [2022-11-21 17:04:51,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:04:51,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599549610] [2022-11-21 17:04:51,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:04:51,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:04:51,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:54,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:04:54,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:04:54,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599549610] [2022-11-21 17:04:54,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599549610] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:04:54,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:04:54,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-11-21 17:04:54,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158977876] [2022-11-21 17:04:54,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:04:54,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-21 17:04:54,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:04:54,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-21 17:04:54,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=798, Unknown=0, NotChecked=0, Total=930 [2022-11-21 17:04:54,512 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 305 [2022-11-21 17:04:54,517 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 321 transitions, 1205 flow. Second operand has 31 states, 31 states have (on average 195.0) internal successors, (6045), 31 states have internal predecessors, (6045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:54,517 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:04:54,517 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 305 [2022-11-21 17:04:54,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:04:59,668 INFO L130 PetriNetUnfolder]: 2661/10800 cut-off events. [2022-11-21 17:04:59,668 INFO L131 PetriNetUnfolder]: For 1870/1874 co-relation queries the response was YES. [2022-11-21 17:04:59,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17767 conditions, 10800 events. 2661/10800 cut-off events. For 1870/1874 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 104452 event pairs, 1986 based on Foata normal form. 2/9759 useless extension candidates. Maximal degree in co-relation 17734. Up to 4022 conditions per place. [2022-11-21 17:04:59,773 INFO L137 encePairwiseOnDemand]: 266/305 looper letters, 138 selfloop transitions, 68 changer transitions 0/389 dead transitions. [2022-11-21 17:04:59,773 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 389 transitions, 1902 flow [2022-11-21 17:04:59,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-21 17:04:59,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-21 17:04:59,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 7332 transitions. [2022-11-21 17:04:59,782 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6497120070890563 [2022-11-21 17:04:59,782 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 7332 transitions. [2022-11-21 17:04:59,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 7332 transitions. [2022-11-21 17:04:59,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:04:59,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 7332 transitions. [2022-11-21 17:04:59,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 198.16216216216216) internal successors, (7332), 37 states have internal predecessors, (7332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:59,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 305.0) internal successors, (11590), 38 states have internal predecessors, (11590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:59,809 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 305.0) internal successors, (11590), 38 states have internal predecessors, (11590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:59,809 INFO L175 Difference]: Start difference. First operand has 357 places, 321 transitions, 1205 flow. Second operand 37 states and 7332 transitions. [2022-11-21 17:04:59,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 389 transitions, 1902 flow [2022-11-21 17:04:59,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 389 transitions, 1840 flow, removed 0 selfloop flow, removed 13 redundant places. [2022-11-21 17:04:59,828 INFO L231 Difference]: Finished difference. Result has 395 places, 355 transitions, 1604 flow [2022-11-21 17:04:59,828 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=1143, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=1604, PETRI_PLACES=395, PETRI_TRANSITIONS=355} [2022-11-21 17:04:59,829 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 110 predicate places. [2022-11-21 17:04:59,829 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 355 transitions, 1604 flow [2022-11-21 17:04:59,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 195.0) internal successors, (6045), 31 states have internal predecessors, (6045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:59,830 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:04:59,830 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:04:59,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-21 17:04:59,831 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-21 17:04:59,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:04:59,831 INFO L85 PathProgramCache]: Analyzing trace with hash 963435259, now seen corresponding path program 1 times [2022-11-21 17:04:59,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:04:59,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767623798] [2022-11-21 17:04:59,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:04:59,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:04:59,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:01,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:05:01,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:05:01,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767623798] [2022-11-21 17:05:01,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767623798] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:05:01,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:05:01,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-21 17:05:01,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974352902] [2022-11-21 17:05:01,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:05:01,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-21 17:05:01,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:05:01,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-21 17:05:01,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2022-11-21 17:05:01,269 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 305 [2022-11-21 17:05:01,272 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 355 transitions, 1604 flow. Second operand has 23 states, 23 states have (on average 208.65217391304347) internal successors, (4799), 23 states have internal predecessors, (4799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:05:01,272 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:05:01,272 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 305 [2022-11-21 17:05:01,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:05:10,383 INFO L130 PetriNetUnfolder]: 6583/21347 cut-off events. [2022-11-21 17:05:10,383 INFO L131 PetriNetUnfolder]: For 3745/3785 co-relation queries the response was YES. [2022-11-21 17:05:10,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38440 conditions, 21347 events. 6583/21347 cut-off events. For 3745/3785 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 215685 event pairs, 1104 based on Foata normal form. 132/19951 useless extension candidates. Maximal degree in co-relation 38392. Up to 3159 conditions per place. [2022-11-21 17:05:10,854 INFO L137 encePairwiseOnDemand]: 274/305 looper letters, 408 selfloop transitions, 141 changer transitions 0/750 dead transitions. [2022-11-21 17:05:10,854 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 750 transitions, 3817 flow [2022-11-21 17:05:10,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-21 17:05:10,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-21 17:05:10,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 8726 transitions. [2022-11-21 17:05:10,878 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7152459016393443 [2022-11-21 17:05:10,878 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 8726 transitions. [2022-11-21 17:05:10,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 8726 transitions. [2022-11-21 17:05:10,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:05:10,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 8726 transitions. [2022-11-21 17:05:10,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 218.15) internal successors, (8726), 40 states have internal predecessors, (8726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:05:10,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 305.0) internal successors, (12505), 41 states have internal predecessors, (12505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:05:10,927 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 305.0) internal successors, (12505), 41 states have internal predecessors, (12505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:05:10,928 INFO L175 Difference]: Start difference. First operand has 395 places, 355 transitions, 1604 flow. Second operand 40 states and 8726 transitions. [2022-11-21 17:05:10,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 750 transitions, 3817 flow [2022-11-21 17:05:10,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 750 transitions, 3550 flow, removed 88 selfloop flow, removed 19 redundant places. [2022-11-21 17:05:10,976 INFO L231 Difference]: Finished difference. Result has 426 places, 456 transitions, 2203 flow [2022-11-21 17:05:10,977 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=1395, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=2203, PETRI_PLACES=426, PETRI_TRANSITIONS=456} [2022-11-21 17:05:10,977 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 141 predicate places. [2022-11-21 17:05:10,977 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 456 transitions, 2203 flow [2022-11-21 17:05:10,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 208.65217391304347) internal successors, (4799), 23 states have internal predecessors, (4799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:05:10,978 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:05:10,979 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:05:10,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-21 17:05:10,979 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-21 17:05:10,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:05:10,980 INFO L85 PathProgramCache]: Analyzing trace with hash 578067855, now seen corresponding path program 1 times [2022-11-21 17:05:10,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:05:10,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519248938] [2022-11-21 17:05:10,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:05:10,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:05:11,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:15,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:05:15,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:05:15,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519248938] [2022-11-21 17:05:15,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519248938] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:05:15,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:05:15,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-11-21 17:05:15,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449522759] [2022-11-21 17:05:15,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:05:15,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-21 17:05:15,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:05:15,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-21 17:05:15,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=967, Unknown=0, NotChecked=0, Total=1122 [2022-11-21 17:05:15,111 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 305 [2022-11-21 17:05:15,116 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 456 transitions, 2203 flow. Second operand has 34 states, 34 states have (on average 186.05882352941177) internal successors, (6326), 34 states have internal predecessors, (6326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:05:15,116 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:05:15,116 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 305 [2022-11-21 17:05:15,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:05:25,938 INFO L130 PetriNetUnfolder]: 7601/24417 cut-off events. [2022-11-21 17:05:25,939 INFO L131 PetriNetUnfolder]: For 9586/9814 co-relation queries the response was YES. [2022-11-21 17:05:26,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48451 conditions, 24417 events. 7601/24417 cut-off events. For 9586/9814 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 258663 event pairs, 3226 based on Foata normal form. 24/22355 useless extension candidates. Maximal degree in co-relation 48394. Up to 11359 conditions per place. [2022-11-21 17:05:26,312 INFO L137 encePairwiseOnDemand]: 267/305 looper letters, 259 selfloop transitions, 95 changer transitions 0/542 dead transitions. [2022-11-21 17:05:26,313 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 542 transitions, 3230 flow [2022-11-21 17:05:26,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-21 17:05:26,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-21 17:05:26,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 7015 transitions. [2022-11-21 17:05:26,323 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6216216216216216 [2022-11-21 17:05:26,324 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 7015 transitions. [2022-11-21 17:05:26,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 7015 transitions. [2022-11-21 17:05:26,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:05:26,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 7015 transitions. [2022-11-21 17:05:26,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 189.59459459459458) internal successors, (7015), 37 states have internal predecessors, (7015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:05:26,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 305.0) internal successors, (11590), 38 states have internal predecessors, (11590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:05:26,360 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 305.0) internal successors, (11590), 38 states have internal predecessors, (11590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:05:26,360 INFO L175 Difference]: Start difference. First operand has 426 places, 456 transitions, 2203 flow. Second operand 37 states and 7015 transitions. [2022-11-21 17:05:26,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 542 transitions, 3230 flow [2022-11-21 17:05:26,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 542 transitions, 3140 flow, removed 38 selfloop flow, removed 7 redundant places. [2022-11-21 17:05:26,468 INFO L231 Difference]: Finished difference. Result has 466 places, 474 transitions, 2531 flow [2022-11-21 17:05:26,469 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=2119, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=2531, PETRI_PLACES=466, PETRI_TRANSITIONS=474} [2022-11-21 17:05:26,470 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 181 predicate places. [2022-11-21 17:05:26,470 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 474 transitions, 2531 flow [2022-11-21 17:05:26,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 186.05882352941177) internal successors, (6326), 34 states have internal predecessors, (6326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:05:26,471 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:05:26,471 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:05:26,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-21 17:05:26,472 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-21 17:05:26,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:05:26,473 INFO L85 PathProgramCache]: Analyzing trace with hash 67393768, now seen corresponding path program 1 times [2022-11-21 17:05:26,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:05:26,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567851835] [2022-11-21 17:05:26,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:05:26,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:05:26,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:28,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:05:28,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:05:28,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567851835] [2022-11-21 17:05:28,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567851835] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:05:28,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:05:28,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-11-21 17:05:28,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642301766] [2022-11-21 17:05:28,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:05:28,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-21 17:05:28,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:05:28,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-21 17:05:28,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=524, Unknown=0, NotChecked=0, Total=600 [2022-11-21 17:05:28,323 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 305 [2022-11-21 17:05:28,326 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 474 transitions, 2531 flow. Second operand has 25 states, 25 states have (on average 205.56) internal successors, (5139), 25 states have internal predecessors, (5139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:05:28,327 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:05:28,327 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 305 [2022-11-21 17:05:28,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:05:39,596 INFO L130 PetriNetUnfolder]: 7774/26161 cut-off events. [2022-11-21 17:05:39,596 INFO L131 PetriNetUnfolder]: For 13404/13701 co-relation queries the response was YES. [2022-11-21 17:05:39,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52699 conditions, 26161 events. 7774/26161 cut-off events. For 13404/13701 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 279200 event pairs, 1332 based on Foata normal form. 195/24341 useless extension candidates. Maximal degree in co-relation 52631. Up to 2899 conditions per place. [2022-11-21 17:05:39,990 INFO L137 encePairwiseOnDemand]: 274/305 looper letters, 418 selfloop transitions, 185 changer transitions 0/802 dead transitions. [2022-11-21 17:05:39,990 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 802 transitions, 4766 flow [2022-11-21 17:05:39,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-21 17:05:39,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-11-21 17:05:40,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 8764 transitions. [2022-11-21 17:05:40,002 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7008396641343463 [2022-11-21 17:05:40,002 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 8764 transitions. [2022-11-21 17:05:40,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 8764 transitions. [2022-11-21 17:05:40,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:05:40,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 8764 transitions. [2022-11-21 17:05:40,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 213.7560975609756) internal successors, (8764), 41 states have internal predecessors, (8764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:05:40,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 305.0) internal successors, (12810), 42 states have internal predecessors, (12810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:05:40,029 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 305.0) internal successors, (12810), 42 states have internal predecessors, (12810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:05:40,030 INFO L175 Difference]: Start difference. First operand has 466 places, 474 transitions, 2531 flow. Second operand 41 states and 8764 transitions. [2022-11-21 17:05:40,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 506 places, 802 transitions, 4766 flow [2022-11-21 17:05:40,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 480 places, 802 transitions, 4587 flow, removed 27 selfloop flow, removed 26 redundant places. [2022-11-21 17:05:40,379 INFO L231 Difference]: Finished difference. Result has 489 places, 540 transitions, 3305 flow [2022-11-21 17:05:40,379 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=2367, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=3305, PETRI_PLACES=489, PETRI_TRANSITIONS=540} [2022-11-21 17:05:40,380 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 204 predicate places. [2022-11-21 17:05:40,380 INFO L495 AbstractCegarLoop]: Abstraction has has 489 places, 540 transitions, 3305 flow [2022-11-21 17:05:40,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 205.56) internal successors, (5139), 25 states have internal predecessors, (5139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:05:40,381 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:05:40,382 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:05:40,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-21 17:05:40,382 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-21 17:05:40,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:05:40,383 INFO L85 PathProgramCache]: Analyzing trace with hash 2048569117, now seen corresponding path program 1 times [2022-11-21 17:05:40,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:05:40,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779747046] [2022-11-21 17:05:40,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:05:40,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:05:40,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:42,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:05:42,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:05:42,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779747046] [2022-11-21 17:05:42,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779747046] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:05:42,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:05:42,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-21 17:05:42,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724696245] [2022-11-21 17:05:42,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:05:42,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-21 17:05:42,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:05:42,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-21 17:05:42,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2022-11-21 17:05:42,839 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 305 [2022-11-21 17:05:42,844 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 540 transitions, 3305 flow. Second operand has 27 states, 27 states have (on average 209.22222222222223) internal successors, (5649), 27 states have internal predecessors, (5649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:05:42,845 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:05:42,845 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 305 [2022-11-21 17:05:42,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:05:54,152 INFO L130 PetriNetUnfolder]: 8169/29270 cut-off events. [2022-11-21 17:05:54,152 INFO L131 PetriNetUnfolder]: For 20531/21056 co-relation queries the response was YES. [2022-11-21 17:05:54,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60341 conditions, 29270 events. 8169/29270 cut-off events. For 20531/21056 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 326071 event pairs, 4674 based on Foata normal form. 87/26843 useless extension candidates. Maximal degree in co-relation 60265. Up to 10329 conditions per place. [2022-11-21 17:05:54,988 INFO L137 encePairwiseOnDemand]: 271/305 looper letters, 334 selfloop transitions, 114 changer transitions 0/721 dead transitions. [2022-11-21 17:05:54,988 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 524 places, 721 transitions, 5021 flow [2022-11-21 17:05:54,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-21 17:05:54,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-21 17:05:54,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 7707 transitions. [2022-11-21 17:05:54,995 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7019125683060109 [2022-11-21 17:05:54,995 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 7707 transitions. [2022-11-21 17:05:54,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 7707 transitions. [2022-11-21 17:05:54,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:05:54,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 7707 transitions. [2022-11-21 17:05:55,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 214.08333333333334) internal successors, (7707), 36 states have internal predecessors, (7707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:05:55,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 305.0) internal successors, (11285), 37 states have internal predecessors, (11285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:05:55,018 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 305.0) internal successors, (11285), 37 states have internal predecessors, (11285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:05:55,018 INFO L175 Difference]: Start difference. First operand has 489 places, 540 transitions, 3305 flow. Second operand 36 states and 7707 transitions. [2022-11-21 17:05:55,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 524 places, 721 transitions, 5021 flow [2022-11-21 17:05:55,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 721 transitions, 4930 flow, removed 24 selfloop flow, removed 11 redundant places. [2022-11-21 17:05:55,211 INFO L231 Difference]: Finished difference. Result has 525 places, 597 transitions, 4093 flow [2022-11-21 17:05:55,212 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=3219, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=4093, PETRI_PLACES=525, PETRI_TRANSITIONS=597} [2022-11-21 17:05:55,212 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 240 predicate places. [2022-11-21 17:05:55,212 INFO L495 AbstractCegarLoop]: Abstraction has has 525 places, 597 transitions, 4093 flow [2022-11-21 17:05:55,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 209.22222222222223) internal successors, (5649), 27 states have internal predecessors, (5649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:05:55,214 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:05:55,214 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:05:55,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-21 17:05:55,214 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-21 17:05:55,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:05:55,215 INFO L85 PathProgramCache]: Analyzing trace with hash -918865980, now seen corresponding path program 1 times [2022-11-21 17:05:55,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:05:55,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920620637] [2022-11-21 17:05:55,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:05:55,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:05:55,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:56,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:05:56,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:05:56,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920620637] [2022-11-21 17:05:56,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920620637] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:05:56,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:05:56,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-21 17:05:56,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904566758] [2022-11-21 17:05:56,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:05:56,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-21 17:05:56,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:05:56,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-21 17:05:56,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2022-11-21 17:05:56,704 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 305 [2022-11-21 17:05:56,707 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 597 transitions, 4093 flow. Second operand has 22 states, 22 states have (on average 208.9090909090909) internal successors, (4596), 22 states have internal predecessors, (4596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:05:56,708 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:05:56,708 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 305 [2022-11-21 17:05:56,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand