./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b 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_15b574ee-9982-4c00-b6e9-2f662c269312/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15b574ee-9982-4c00-b6e9-2f662c269312/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15b574ee-9982-4c00-b6e9-2f662c269312/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15b574ee-9982-4c00-b6e9-2f662c269312/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15b574ee-9982-4c00-b6e9-2f662c269312/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15b574ee-9982-4c00-b6e9-2f662c269312/bin/uautomizer-TMbwUNV5ro --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 af00d5f4cc6a18cb9fd8a5151467217fe3ddb5ee0fa30b2cfbd9dd374105ee15 --- 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-8393723 [2022-11-18 20:17:33,626 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:17:33,629 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:17:33,676 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:17:33,677 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:17:33,678 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:17:33,680 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:17:33,682 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:17:33,691 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:17:33,697 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:17:33,699 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:17:33,702 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:17:33,703 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:17:33,706 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:17:33,708 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:17:33,712 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:17:33,713 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:17:33,715 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:17:33,718 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:17:33,724 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:17:33,727 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:17:33,728 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:17:33,732 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:17:33,733 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:17:33,745 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:17:33,745 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:17:33,746 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:17:33,748 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:17:33,749 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:17:33,751 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:17:33,752 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:17:33,753 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:17:33,756 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:17:33,757 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:17:33,760 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:17:33,760 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:17:33,762 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:17:33,762 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:17:33,762 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:17:33,764 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:17:33,764 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:17:33,768 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15b574ee-9982-4c00-b6e9-2f662c269312/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 20:17:33,819 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:17:33,820 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:17:33,820 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:17:33,821 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:17:33,822 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:17:33,822 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:17:33,823 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:17:33,823 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:17:33,824 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:17:33,824 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:17:33,825 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:17:33,826 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:17:33,826 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:17:33,826 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:17:33,827 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:17:33,827 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:17:33,827 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:17:33,827 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:17:33,828 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 20:17:33,828 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:17:33,828 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:17:33,828 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:17:33,829 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:17:33,829 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:17:33,829 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:17:33,830 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:17:33,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:17:33,830 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:17:33,830 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:17:33,831 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:17:33,831 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:17:33,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:17:33,832 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:17:33,832 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:17:33,832 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:17:33,833 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_15b574ee-9982-4c00-b6e9-2f662c269312/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15b574ee-9982-4c00-b6e9-2f662c269312/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> af00d5f4cc6a18cb9fd8a5151467217fe3ddb5ee0fa30b2cfbd9dd374105ee15 [2022-11-18 20:17:34,199 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:17:34,230 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:17:34,235 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:17:34,236 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:17:34,237 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:17:34,239 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15b574ee-9982-4c00-b6e9-2f662c269312/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.i [2022-11-18 20:17:34,337 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15b574ee-9982-4c00-b6e9-2f662c269312/bin/uautomizer-TMbwUNV5ro/data/ca06b32f7/974007b132ba4282853ef96f01464586/FLAG4e5dea71c [2022-11-18 20:17:34,964 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:17:34,965 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15b574ee-9982-4c00-b6e9-2f662c269312/sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.i [2022-11-18 20:17:34,981 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15b574ee-9982-4c00-b6e9-2f662c269312/bin/uautomizer-TMbwUNV5ro/data/ca06b32f7/974007b132ba4282853ef96f01464586/FLAG4e5dea71c [2022-11-18 20:17:35,246 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15b574ee-9982-4c00-b6e9-2f662c269312/bin/uautomizer-TMbwUNV5ro/data/ca06b32f7/974007b132ba4282853ef96f01464586 [2022-11-18 20:17:35,251 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:17:35,258 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:17:35,264 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:17:35,265 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:17:35,269 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:17:35,270 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:17:35" (1/1) ... [2022-11-18 20:17:35,272 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15824714 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:35, skipping insertion in model container [2022-11-18 20:17:35,273 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:17:35" (1/1) ... [2022-11-18 20:17:35,282 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:17:35,341 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:17:35,873 WARN L234 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_15b574ee-9982-4c00-b6e9-2f662c269312/sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.i[30176,30189] [2022-11-18 20:17:35,906 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:17:35,926 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:17:35,987 WARN L234 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_15b574ee-9982-4c00-b6e9-2f662c269312/sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.i[30176,30189] [2022-11-18 20:17:36,008 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:17:36,056 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:17:36,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:36 WrapperNode [2022-11-18 20:17:36,057 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:17:36,058 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:17:36,059 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:17:36,059 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:17:36,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:36" (1/1) ... [2022-11-18 20:17:36,094 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:36" (1/1) ... [2022-11-18 20:17:36,117 INFO L138 Inliner]: procedures = 171, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 81 [2022-11-18 20:17:36,118 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:17:36,119 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:17:36,119 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:17:36,119 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:17:36,129 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:36" (1/1) ... [2022-11-18 20:17:36,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:36" (1/1) ... [2022-11-18 20:17:36,136 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:36" (1/1) ... [2022-11-18 20:17:36,151 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:36" (1/1) ... [2022-11-18 20:17:36,158 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:36" (1/1) ... [2022-11-18 20:17:36,163 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:36" (1/1) ... [2022-11-18 20:17:36,172 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:36" (1/1) ... [2022-11-18 20:17:36,174 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:36" (1/1) ... [2022-11-18 20:17:36,177 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:17:36,178 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:17:36,178 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:17:36,178 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:17:36,187 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:36" (1/1) ... [2022-11-18 20:17:36,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:17:36,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15b574ee-9982-4c00-b6e9-2f662c269312/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:17:36,224 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15b574ee-9982-4c00-b6e9-2f662c269312/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:17:36,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15b574ee-9982-4c00-b6e9-2f662c269312/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:17:36,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:17:36,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:17:36,270 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 20:17:36,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:17:36,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:17:36,270 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-18 20:17:36,271 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-18 20:17:36,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:17:36,271 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2022-11-18 20:17:36,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:17:36,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:17:36,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:17:36,274 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:17:36,521 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:17:36,523 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:17:36,820 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:17:36,828 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:17:36,829 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-11-18 20:17:36,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:17:36 BoogieIcfgContainer [2022-11-18 20:17:36,832 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:17:36,835 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:17:36,835 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:17:36,839 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:17:36,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:17:35" (1/3) ... [2022-11-18 20:17:36,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65f83f52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:17:36, skipping insertion in model container [2022-11-18 20:17:36,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:36" (2/3) ... [2022-11-18 20:17:36,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65f83f52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:17:36, skipping insertion in model container [2022-11-18 20:17:36,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:17:36" (3/3) ... [2022-11-18 20:17:36,843 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_41-trylock_racefree.i [2022-11-18 20:17:36,853 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:17:36,865 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:17:36,865 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-18 20:17:36,866 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:17:36,926 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-18 20:17:36,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 124 transitions, 256 flow [2022-11-18 20:17:37,111 INFO L130 PetriNetUnfolder]: 21/163 cut-off events. [2022-11-18 20:17:37,112 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-18 20:17:37,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 163 events. 21/163 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 404 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 84. Up to 6 conditions per place. [2022-11-18 20:17:37,119 INFO L82 GeneralOperation]: Start removeDead. Operand has 113 places, 124 transitions, 256 flow [2022-11-18 20:17:37,129 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 111 places, 121 transitions, 250 flow [2022-11-18 20:17:37,155 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:17:37,165 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;@2f802a7a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:17:37,165 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-18 20:17:37,198 INFO L130 PetriNetUnfolder]: 4/66 cut-off events. [2022-11-18 20:17:37,198 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:17:37,198 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:17:37,199 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] [2022-11-18 20:17:37,200 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-18 20:17:37,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:17:37,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1058131991, now seen corresponding path program 1 times [2022-11-18 20:17:37,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:17:37,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197752796] [2022-11-18 20:17:37,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:17:37,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:17:37,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:37,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:17:37,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:17:37,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197752796] [2022-11-18 20:17:37,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197752796] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:17:37,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:17:37,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:17:37,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362943974] [2022-11-18 20:17:37,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:17:37,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:17:37,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:17:37,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:17:37,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:17:37,812 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-11-18 20:17:37,820 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 121 transitions, 250 flow. Second operand has 4 states, 4 states have (on average 98.75) internal successors, (395), 4 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:37,820 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:17:37,820 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-11-18 20:17:37,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:17:37,949 INFO L130 PetriNetUnfolder]: 1/110 cut-off events. [2022-11-18 20:17:37,950 INFO L131 PetriNetUnfolder]: For 3/12 co-relation queries the response was YES. [2022-11-18 20:17:37,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 110 events. 1/110 cut-off events. For 3/12 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 113 event pairs, 0 based on Foata normal form. 41/142 useless extension candidates. Maximal degree in co-relation 77. Up to 7 conditions per place. [2022-11-18 20:17:37,953 INFO L137 encePairwiseOnDemand]: 105/124 looper letters, 10 selfloop transitions, 4 changer transitions 0/108 dead transitions. [2022-11-18 20:17:37,954 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 108 transitions, 252 flow [2022-11-18 20:17:37,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:17:37,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:17:37,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 533 transitions. [2022-11-18 20:17:37,979 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8596774193548387 [2022-11-18 20:17:37,980 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 533 transitions. [2022-11-18 20:17:37,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 533 transitions. [2022-11-18 20:17:37,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:17:37,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 533 transitions. [2022-11-18 20:17:37,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 106.6) internal successors, (533), 5 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:38,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:38,008 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:38,010 INFO L175 Difference]: Start difference. First operand has 111 places, 121 transitions, 250 flow. Second operand 5 states and 533 transitions. [2022-11-18 20:17:38,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 108 transitions, 252 flow [2022-11-18 20:17:38,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 108 transitions, 252 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:17:38,023 INFO L231 Difference]: Finished difference. Result has 113 places, 106 transitions, 232 flow [2022-11-18 20:17:38,026 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=232, PETRI_PLACES=113, PETRI_TRANSITIONS=106} [2022-11-18 20:17:38,033 INFO L288 CegarLoopForPetriNet]: 111 programPoint places, 2 predicate places. [2022-11-18 20:17:38,034 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 106 transitions, 232 flow [2022-11-18 20:17:38,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 98.75) internal successors, (395), 4 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:38,036 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:17:38,036 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] [2022-11-18 20:17:38,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:17:38,037 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-18 20:17:38,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:17:38,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1397684023, now seen corresponding path program 1 times [2022-11-18 20:17:38,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:17:38,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613386364] [2022-11-18 20:17:38,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:17:38,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:17:38,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:38,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:17:38,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:17:38,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613386364] [2022-11-18 20:17:38,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613386364] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:17:38,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:17:38,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:17:38,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112834570] [2022-11-18 20:17:38,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:17:38,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:17:38,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:17:38,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:17:38,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:17:38,225 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 124 [2022-11-18 20:17:38,226 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 106 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:38,226 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:17:38,226 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 124 [2022-11-18 20:17:38,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:17:38,300 INFO L130 PetriNetUnfolder]: 8/194 cut-off events. [2022-11-18 20:17:38,300 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-18 20:17:38,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 194 events. 8/194 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 534 event pairs, 4 based on Foata normal form. 0/178 useless extension candidates. Maximal degree in co-relation 180. Up to 11 conditions per place. [2022-11-18 20:17:38,303 INFO L137 encePairwiseOnDemand]: 118/124 looper letters, 10 selfloop transitions, 4 changer transitions 0/107 dead transitions. [2022-11-18 20:17:38,303 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 107 transitions, 262 flow [2022-11-18 20:17:38,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:17:38,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:17:38,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 506 transitions. [2022-11-18 20:17:38,306 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8161290322580645 [2022-11-18 20:17:38,306 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 506 transitions. [2022-11-18 20:17:38,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 506 transitions. [2022-11-18 20:17:38,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:17:38,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 506 transitions. [2022-11-18 20:17:38,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 101.2) internal successors, (506), 5 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:38,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:38,311 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:38,312 INFO L175 Difference]: Start difference. First operand has 113 places, 106 transitions, 232 flow. Second operand 5 states and 506 transitions. [2022-11-18 20:17:38,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 107 transitions, 262 flow [2022-11-18 20:17:38,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 107 transitions, 254 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:17:38,316 INFO L231 Difference]: Finished difference. Result has 111 places, 104 transitions, 228 flow [2022-11-18 20:17:38,317 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=228, PETRI_PLACES=111, PETRI_TRANSITIONS=104} [2022-11-18 20:17:38,318 INFO L288 CegarLoopForPetriNet]: 111 programPoint places, 0 predicate places. [2022-11-18 20:17:38,318 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 104 transitions, 228 flow [2022-11-18 20:17:38,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:38,319 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:17:38,319 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-18 20:17:38,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:17:38,320 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-18 20:17:38,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:17:38,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1929002665, now seen corresponding path program 1 times [2022-11-18 20:17:38,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:17:38,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029297750] [2022-11-18 20:17:38,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:17:38,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:17:38,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:17:38,349 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:17:38,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:17:38,435 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:17:38,436 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 20:17:38,437 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-11-18 20:17:38,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-11-18 20:17:38,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-11-18 20:17:38,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-11-18 20:17:38,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-11-18 20:17:38,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-11-18 20:17:38,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2022-11-18 20:17:38,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2022-11-18 20:17:38,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2022-11-18 20:17:38,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-11-18 20:17:38,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-11-18 20:17:38,451 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-11-18 20:17:38,451 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-11-18 20:17:38,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:17:38,452 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-18 20:17:38,456 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 20:17:38,456 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-18 20:17:38,509 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 20:17:38,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 162 transitions, 342 flow [2022-11-18 20:17:38,559 INFO L130 PetriNetUnfolder]: 37/277 cut-off events. [2022-11-18 20:17:38,559 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-18 20:17:38,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291 conditions, 277 events. 37/277 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 839 event pairs, 0 based on Foata normal form. 0/218 useless extension candidates. Maximal degree in co-relation 165. Up to 9 conditions per place. [2022-11-18 20:17:38,562 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 162 transitions, 342 flow [2022-11-18 20:17:38,566 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 146 places, 162 transitions, 342 flow [2022-11-18 20:17:38,575 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:17:38,581 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;@2f802a7a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:17:38,582 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-18 20:17:38,592 INFO L130 PetriNetUnfolder]: 4/68 cut-off events. [2022-11-18 20:17:38,595 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:17:38,595 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:17:38,595 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] [2022-11-18 20:17:38,596 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 20:17:38,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:17:38,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1314132229, now seen corresponding path program 1 times [2022-11-18 20:17:38,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:17:38,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276489173] [2022-11-18 20:17:38,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:17:38,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:17:38,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:38,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:17:38,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:17:38,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276489173] [2022-11-18 20:17:38,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276489173] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:17:38,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:17:38,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:17:38,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234265047] [2022-11-18 20:17:38,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:17:38,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:17:38,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:17:38,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:17:38,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:17:38,721 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 162 [2022-11-18 20:17:38,722 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 162 transitions, 342 flow. Second operand has 4 states, 4 states have (on average 128.75) internal successors, (515), 4 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:38,723 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:17:38,723 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 162 [2022-11-18 20:17:38,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:17:38,883 INFO L130 PetriNetUnfolder]: 4/222 cut-off events. [2022-11-18 20:17:38,883 INFO L131 PetriNetUnfolder]: For 45/125 co-relation queries the response was YES. [2022-11-18 20:17:38,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 222 events. 4/222 cut-off events. For 45/125 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 537 event pairs, 0 based on Foata normal form. 127/323 useless extension candidates. Maximal degree in co-relation 147. Up to 21 conditions per place. [2022-11-18 20:17:38,890 INFO L137 encePairwiseOnDemand]: 137/162 looper letters, 19 selfloop transitions, 4 changer transitions 0/150 dead transitions. [2022-11-18 20:17:38,891 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 150 transitions, 364 flow [2022-11-18 20:17:38,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:17:38,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:17:38,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 698 transitions. [2022-11-18 20:17:38,893 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8617283950617284 [2022-11-18 20:17:38,893 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 698 transitions. [2022-11-18 20:17:38,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 698 transitions. [2022-11-18 20:17:38,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:17:38,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 698 transitions. [2022-11-18 20:17:38,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 139.6) internal successors, (698), 5 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:38,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:38,897 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:38,898 INFO L175 Difference]: Start difference. First operand has 146 places, 162 transitions, 342 flow. Second operand 5 states and 698 transitions. [2022-11-18 20:17:38,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 150 transitions, 364 flow [2022-11-18 20:17:38,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 150 transitions, 364 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:17:38,901 INFO L231 Difference]: Finished difference. Result has 152 places, 146 transitions, 336 flow [2022-11-18 20:17:38,902 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=336, PETRI_PLACES=152, PETRI_TRANSITIONS=146} [2022-11-18 20:17:38,903 INFO L288 CegarLoopForPetriNet]: 146 programPoint places, 6 predicate places. [2022-11-18 20:17:38,903 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 146 transitions, 336 flow [2022-11-18 20:17:38,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 128.75) internal successors, (515), 4 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:38,904 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:17:38,904 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] [2022-11-18 20:17:38,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:17:38,904 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 20:17:38,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:17:38,905 INFO L85 PathProgramCache]: Analyzing trace with hash -169529811, now seen corresponding path program 1 times [2022-11-18 20:17:38,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:17:38,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516471347] [2022-11-18 20:17:38,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:17:38,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:17:38,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:39,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:17:39,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:17:39,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516471347] [2022-11-18 20:17:39,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516471347] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:17:39,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:17:39,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:17:39,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552718660] [2022-11-18 20:17:39,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:17:39,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:17:39,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:17:39,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:17:39,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:17:39,041 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 162 [2022-11-18 20:17:39,043 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 146 transitions, 336 flow. Second operand has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:39,043 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:17:39,043 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 162 [2022-11-18 20:17:39,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:17:39,363 INFO L130 PetriNetUnfolder]: 172/1015 cut-off events. [2022-11-18 20:17:39,363 INFO L131 PetriNetUnfolder]: For 95/95 co-relation queries the response was YES. [2022-11-18 20:17:39,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1410 conditions, 1015 events. 172/1015 cut-off events. For 95/95 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 7133 event pairs, 43 based on Foata normal form. 0/894 useless extension candidates. Maximal degree in co-relation 1350. Up to 207 conditions per place. [2022-11-18 20:17:39,375 INFO L137 encePairwiseOnDemand]: 155/162 looper letters, 36 selfloop transitions, 6 changer transitions 0/169 dead transitions. [2022-11-18 20:17:39,375 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 169 transitions, 484 flow [2022-11-18 20:17:39,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:17:39,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:17:39,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 666 transitions. [2022-11-18 20:17:39,378 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8222222222222222 [2022-11-18 20:17:39,379 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 666 transitions. [2022-11-18 20:17:39,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 666 transitions. [2022-11-18 20:17:39,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:17:39,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 666 transitions. [2022-11-18 20:17:39,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 133.2) internal successors, (666), 5 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:39,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:39,384 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:39,385 INFO L175 Difference]: Start difference. First operand has 152 places, 146 transitions, 336 flow. Second operand 5 states and 666 transitions. [2022-11-18 20:17:39,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 169 transitions, 484 flow [2022-11-18 20:17:39,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 169 transitions, 482 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:17:39,393 INFO L231 Difference]: Finished difference. Result has 158 places, 151 transitions, 383 flow [2022-11-18 20:17:39,393 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=383, PETRI_PLACES=158, PETRI_TRANSITIONS=151} [2022-11-18 20:17:39,395 INFO L288 CegarLoopForPetriNet]: 146 programPoint places, 12 predicate places. [2022-11-18 20:17:39,395 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 151 transitions, 383 flow [2022-11-18 20:17:39,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:39,396 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:17:39,397 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] [2022-11-18 20:17:39,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:17:39,397 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 20:17:39,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:17:39,398 INFO L85 PathProgramCache]: Analyzing trace with hash 561663769, now seen corresponding path program 1 times [2022-11-18 20:17:39,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:17:39,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78794611] [2022-11-18 20:17:39,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:17:39,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:17:39,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:39,494 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:17:39,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:17:39,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78794611] [2022-11-18 20:17:39,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78794611] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:17:39,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:17:39,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:17:39,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718238763] [2022-11-18 20:17:39,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:17:39,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:17:39,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:17:39,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:17:39,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:17:39,502 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 162 [2022-11-18 20:17:39,504 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 151 transitions, 383 flow. Second operand has 4 states, 4 states have (on average 130.75) internal successors, (523), 4 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:39,504 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:17:39,504 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 162 [2022-11-18 20:17:39,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:17:39,613 INFO L130 PetriNetUnfolder]: 7/348 cut-off events. [2022-11-18 20:17:39,613 INFO L131 PetriNetUnfolder]: For 104/238 co-relation queries the response was YES. [2022-11-18 20:17:39,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 442 conditions, 348 events. 7/348 cut-off events. For 104/238 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1224 event pairs, 0 based on Foata normal form. 16/328 useless extension candidates. Maximal degree in co-relation 295. Up to 16 conditions per place. [2022-11-18 20:17:39,617 INFO L137 encePairwiseOnDemand]: 156/162 looper letters, 11 selfloop transitions, 8 changer transitions 0/151 dead transitions. [2022-11-18 20:17:39,617 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 151 transitions, 419 flow [2022-11-18 20:17:39,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:17:39,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:17:39,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 652 transitions. [2022-11-18 20:17:39,620 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8049382716049382 [2022-11-18 20:17:39,620 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 652 transitions. [2022-11-18 20:17:39,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 652 transitions. [2022-11-18 20:17:39,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:17:39,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 652 transitions. [2022-11-18 20:17:39,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 130.4) internal successors, (652), 5 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:39,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:39,625 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:39,625 INFO L175 Difference]: Start difference. First operand has 158 places, 151 transitions, 383 flow. Second operand 5 states and 652 transitions. [2022-11-18 20:17:39,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 151 transitions, 419 flow [2022-11-18 20:17:39,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 151 transitions, 416 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:17:39,631 INFO L231 Difference]: Finished difference. Result has 161 places, 151 transitions, 400 flow [2022-11-18 20:17:39,632 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=400, PETRI_PLACES=161, PETRI_TRANSITIONS=151} [2022-11-18 20:17:39,636 INFO L288 CegarLoopForPetriNet]: 146 programPoint places, 15 predicate places. [2022-11-18 20:17:39,636 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 151 transitions, 400 flow [2022-11-18 20:17:39,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 130.75) internal successors, (523), 4 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:39,639 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:17:39,639 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 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] [2022-11-18 20:17:39,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:17:39,639 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 20:17:39,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:17:39,640 INFO L85 PathProgramCache]: Analyzing trace with hash 231708087, now seen corresponding path program 1 times [2022-11-18 20:17:39,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:17:39,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159064465] [2022-11-18 20:17:39,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:17:39,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:17:39,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:39,807 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:17:39,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:17:39,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159064465] [2022-11-18 20:17:39,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159064465] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:17:39,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893689358] [2022-11-18 20:17:39,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:17:39,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:17:39,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15b574ee-9982-4c00-b6e9-2f662c269312/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:17:39,812 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15b574ee-9982-4c00-b6e9-2f662c269312/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:17:39,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15b574ee-9982-4c00-b6e9-2f662c269312/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:17:39,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:39,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:17:39,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:17:40,047 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:17:40,047 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:17:40,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893689358] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:17:40,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:17:40,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 20:17:40,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444967116] [2022-11-18 20:17:40,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:17:40,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:17:40,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:17:40,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:17:40,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:17:40,055 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 162 [2022-11-18 20:17:40,056 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 151 transitions, 400 flow. Second operand has 6 states, 6 states have (on average 129.66666666666666) internal successors, (778), 6 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:40,056 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:17:40,056 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 162 [2022-11-18 20:17:40,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:17:40,225 INFO L130 PetriNetUnfolder]: 7/347 cut-off events. [2022-11-18 20:17:40,226 INFO L131 PetriNetUnfolder]: For 109/232 co-relation queries the response was YES. [2022-11-18 20:17:40,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 347 events. 7/347 cut-off events. For 109/232 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1216 event pairs, 0 based on Foata normal form. 9/320 useless extension candidates. Maximal degree in co-relation 296. Up to 19 conditions per place. [2022-11-18 20:17:40,230 INFO L137 encePairwiseOnDemand]: 157/162 looper letters, 15 selfloop transitions, 6 changer transitions 0/153 dead transitions. [2022-11-18 20:17:40,230 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 153 transitions, 444 flow [2022-11-18 20:17:40,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:17:40,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:17:40,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 911 transitions. [2022-11-18 20:17:40,234 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8033509700176367 [2022-11-18 20:17:40,234 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 911 transitions. [2022-11-18 20:17:40,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 911 transitions. [2022-11-18 20:17:40,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:17:40,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 911 transitions. [2022-11-18 20:17:40,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 130.14285714285714) internal successors, (911), 7 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:40,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 162.0) internal successors, (1296), 8 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:40,241 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 162.0) internal successors, (1296), 8 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:40,241 INFO L175 Difference]: Start difference. First operand has 161 places, 151 transitions, 400 flow. Second operand 7 states and 911 transitions. [2022-11-18 20:17:40,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 153 transitions, 444 flow [2022-11-18 20:17:40,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 153 transitions, 432 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:17:40,250 INFO L231 Difference]: Finished difference. Result has 163 places, 150 transitions, 396 flow [2022-11-18 20:17:40,250 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=396, PETRI_PLACES=163, PETRI_TRANSITIONS=150} [2022-11-18 20:17:40,252 INFO L288 CegarLoopForPetriNet]: 146 programPoint places, 17 predicate places. [2022-11-18 20:17:40,252 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 150 transitions, 396 flow [2022-11-18 20:17:40,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 129.66666666666666) internal successors, (778), 6 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:40,253 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:17:40,253 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] [2022-11-18 20:17:40,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15b574ee-9982-4c00-b6e9-2f662c269312/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:17:40,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15b574ee-9982-4c00-b6e9-2f662c269312/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:17:40,459 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 20:17:40,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:17:40,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1222149656, now seen corresponding path program 1 times [2022-11-18 20:17:40,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:17:40,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106330657] [2022-11-18 20:17:40,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:17:40,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:17:40,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:40,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:17:40,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:17:40,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106330657] [2022-11-18 20:17:40,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106330657] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:17:40,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:17:40,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:17:40,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104573160] [2022-11-18 20:17:40,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:17:40,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:17:40,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:17:40,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:17:40,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:17:40,609 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 162 [2022-11-18 20:17:40,610 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 150 transitions, 396 flow. Second operand has 6 states, 6 states have (on average 120.5) internal successors, (723), 6 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:40,611 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:17:40,611 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 162 [2022-11-18 20:17:40,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:17:41,164 INFO L130 PetriNetUnfolder]: 344/1721 cut-off events. [2022-11-18 20:17:41,164 INFO L131 PetriNetUnfolder]: For 316/322 co-relation queries the response was YES. [2022-11-18 20:17:41,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2640 conditions, 1721 events. 344/1721 cut-off events. For 316/322 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 13983 event pairs, 70 based on Foata normal form. 3/1515 useless extension candidates. Maximal degree in co-relation 1917. Up to 237 conditions per place. [2022-11-18 20:17:41,190 INFO L137 encePairwiseOnDemand]: 151/162 looper letters, 60 selfloop transitions, 19 changer transitions 0/200 dead transitions. [2022-11-18 20:17:41,190 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 200 transitions, 704 flow [2022-11-18 20:17:41,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:17:41,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:17:41,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1152 transitions. [2022-11-18 20:17:41,195 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7901234567901234 [2022-11-18 20:17:41,195 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1152 transitions. [2022-11-18 20:17:41,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1152 transitions. [2022-11-18 20:17:41,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:17:41,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1152 transitions. [2022-11-18 20:17:41,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 128.0) internal successors, (1152), 9 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:41,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 162.0) internal successors, (1620), 10 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:41,205 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 162.0) internal successors, (1620), 10 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:41,205 INFO L175 Difference]: Start difference. First operand has 163 places, 150 transitions, 396 flow. Second operand 9 states and 1152 transitions. [2022-11-18 20:17:41,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 200 transitions, 704 flow [2022-11-18 20:17:41,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 200 transitions, 693 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-18 20:17:41,213 INFO L231 Difference]: Finished difference. Result has 172 places, 162 transitions, 511 flow [2022-11-18 20:17:41,214 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=511, PETRI_PLACES=172, PETRI_TRANSITIONS=162} [2022-11-18 20:17:41,214 INFO L288 CegarLoopForPetriNet]: 146 programPoint places, 26 predicate places. [2022-11-18 20:17:41,215 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 162 transitions, 511 flow [2022-11-18 20:17:41,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 120.5) internal successors, (723), 6 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:41,216 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:17:41,216 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] [2022-11-18 20:17:41,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:17:41,217 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 20:17:41,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:17:41,218 INFO L85 PathProgramCache]: Analyzing trace with hash 768066853, now seen corresponding path program 1 times [2022-11-18 20:17:41,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:17:41,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381714002] [2022-11-18 20:17:41,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:17:41,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:17:41,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:41,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:17:41,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:17:41,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381714002] [2022-11-18 20:17:41,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381714002] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:17:41,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:17:41,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:17:41,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160822341] [2022-11-18 20:17:41,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:17:41,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:17:41,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:17:41,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:17:41,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:17:41,394 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 162 [2022-11-18 20:17:41,396 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 162 transitions, 511 flow. Second operand has 6 states, 6 states have (on average 120.66666666666667) internal successors, (724), 6 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:41,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:17:41,396 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 162 [2022-11-18 20:17:41,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:17:41,983 INFO L130 PetriNetUnfolder]: 321/1611 cut-off events. [2022-11-18 20:17:41,984 INFO L131 PetriNetUnfolder]: For 964/999 co-relation queries the response was YES. [2022-11-18 20:17:41,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2910 conditions, 1611 events. 321/1611 cut-off events. For 964/999 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 12859 event pairs, 77 based on Foata normal form. 42/1491 useless extension candidates. Maximal degree in co-relation 2149. Up to 272 conditions per place. [2022-11-18 20:17:42,003 INFO L137 encePairwiseOnDemand]: 151/162 looper letters, 65 selfloop transitions, 19 changer transitions 0/205 dead transitions. [2022-11-18 20:17:42,004 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 205 transitions, 846 flow [2022-11-18 20:17:42,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:17:42,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:17:42,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1154 transitions. [2022-11-18 20:17:42,011 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7914951989026063 [2022-11-18 20:17:42,011 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1154 transitions. [2022-11-18 20:17:42,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1154 transitions. [2022-11-18 20:17:42,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:17:42,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1154 transitions. [2022-11-18 20:17:42,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 128.22222222222223) internal successors, (1154), 9 states have internal predecessors, (1154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:42,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 162.0) internal successors, (1620), 10 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:42,022 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 162.0) internal successors, (1620), 10 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:42,023 INFO L175 Difference]: Start difference. First operand has 172 places, 162 transitions, 511 flow. Second operand 9 states and 1154 transitions. [2022-11-18 20:17:42,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 205 transitions, 846 flow [2022-11-18 20:17:42,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 205 transitions, 805 flow, removed 11 selfloop flow, removed 4 redundant places. [2022-11-18 20:17:42,033 INFO L231 Difference]: Finished difference. Result has 178 places, 166 transitions, 558 flow [2022-11-18 20:17:42,033 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=558, PETRI_PLACES=178, PETRI_TRANSITIONS=166} [2022-11-18 20:17:42,035 INFO L288 CegarLoopForPetriNet]: 146 programPoint places, 32 predicate places. [2022-11-18 20:17:42,035 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 166 transitions, 558 flow [2022-11-18 20:17:42,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 120.66666666666667) internal successors, (724), 6 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:42,036 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:17:42,036 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-18 20:17:42,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:17:42,037 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 20:17:42,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:17:42,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1689231691, now seen corresponding path program 1 times [2022-11-18 20:17:42,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:17:42,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672641134] [2022-11-18 20:17:42,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:17:42,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:17:42,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:42,122 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:17:42,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:17:42,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672641134] [2022-11-18 20:17:42,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672641134] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:17:42,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:17:42,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:17:42,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336630605] [2022-11-18 20:17:42,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:17:42,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:17:42,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:17:42,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:17:42,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:17:42,127 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 162 [2022-11-18 20:17:42,128 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 166 transitions, 558 flow. Second operand has 4 states, 4 states have (on average 125.25) internal successors, (501), 4 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:42,128 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:17:42,128 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 162 [2022-11-18 20:17:42,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:17:42,605 INFO L130 PetriNetUnfolder]: 270/1942 cut-off events. [2022-11-18 20:17:42,606 INFO L131 PetriNetUnfolder]: For 1155/1202 co-relation queries the response was YES. [2022-11-18 20:17:42,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3318 conditions, 1942 events. 270/1942 cut-off events. For 1155/1202 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 16670 event pairs, 127 based on Foata normal form. 24/1761 useless extension candidates. Maximal degree in co-relation 2554. Up to 362 conditions per place. [2022-11-18 20:17:42,631 INFO L137 encePairwiseOnDemand]: 155/162 looper letters, 55 selfloop transitions, 7 changer transitions 0/192 dead transitions. [2022-11-18 20:17:42,632 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 192 transitions, 820 flow [2022-11-18 20:17:42,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:17:42,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:17:42,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 664 transitions. [2022-11-18 20:17:42,634 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8197530864197531 [2022-11-18 20:17:42,635 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 664 transitions. [2022-11-18 20:17:42,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 664 transitions. [2022-11-18 20:17:42,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:17:42,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 664 transitions. [2022-11-18 20:17:42,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 132.8) internal successors, (664), 5 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:42,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:42,640 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:42,641 INFO L175 Difference]: Start difference. First operand has 178 places, 166 transitions, 558 flow. Second operand 5 states and 664 transitions. [2022-11-18 20:17:42,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 192 transitions, 820 flow [2022-11-18 20:17:42,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 192 transitions, 792 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-18 20:17:42,650 INFO L231 Difference]: Finished difference. Result has 181 places, 169 transitions, 588 flow [2022-11-18 20:17:42,650 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=588, PETRI_PLACES=181, PETRI_TRANSITIONS=169} [2022-11-18 20:17:42,651 INFO L288 CegarLoopForPetriNet]: 146 programPoint places, 35 predicate places. [2022-11-18 20:17:42,651 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 169 transitions, 588 flow [2022-11-18 20:17:42,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 125.25) internal successors, (501), 4 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:42,652 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:17:42,652 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 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] [2022-11-18 20:17:42,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:17:42,653 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 20:17:42,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:17:42,654 INFO L85 PathProgramCache]: Analyzing trace with hash -153088131, now seen corresponding path program 1 times [2022-11-18 20:17:42,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:17:42,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777650355] [2022-11-18 20:17:42,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:17:42,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:17:42,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:17:42,674 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:17:42,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:17:42,694 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:17:42,694 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 20:17:42,694 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-11-18 20:17:42,695 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-11-18 20:17:42,695 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-11-18 20:17:42,695 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-11-18 20:17:42,695 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-11-18 20:17:42,696 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-11-18 20:17:42,696 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-11-18 20:17:42,696 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-11-18 20:17:42,696 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2022-11-18 20:17:42,697 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2022-11-18 20:17:42,697 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2022-11-18 20:17:42,697 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-11-18 20:17:42,697 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-11-18 20:17:42,698 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-11-18 20:17:42,698 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-11-18 20:17:42,698 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-11-18 20:17:42,698 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-11-18 20:17:42,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 20:17:42,699 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:17:42,700 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 20:17:42,700 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-18 20:17:42,729 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 20:17:42,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 179 places, 200 transitions, 430 flow [2022-11-18 20:17:42,806 INFO L130 PetriNetUnfolder]: 58/432 cut-off events. [2022-11-18 20:17:42,807 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-18 20:17:42,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 460 conditions, 432 events. 58/432 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1479 event pairs, 1 based on Foata normal form. 0/338 useless extension candidates. Maximal degree in co-relation 285. Up to 16 conditions per place. [2022-11-18 20:17:42,812 INFO L82 GeneralOperation]: Start removeDead. Operand has 179 places, 200 transitions, 430 flow [2022-11-18 20:17:42,819 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 179 places, 200 transitions, 430 flow [2022-11-18 20:17:42,821 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:17:42,821 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;@2f802a7a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:17:42,821 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-18 20:17:42,827 INFO L130 PetriNetUnfolder]: 4/68 cut-off events. [2022-11-18 20:17:42,828 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:17:42,828 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:17:42,828 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] [2022-11-18 20:17:42,828 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:17:42,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:17:42,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1705486305, now seen corresponding path program 1 times [2022-11-18 20:17:42,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:17:42,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975880509] [2022-11-18 20:17:42,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:17:42,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:17:42,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:42,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:17:42,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:17:42,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975880509] [2022-11-18 20:17:42,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975880509] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:17:42,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:17:42,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:17:42,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486209598] [2022-11-18 20:17:42,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:17:42,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:17:42,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:17:42,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:17:42,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:17:42,915 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 200 [2022-11-18 20:17:42,916 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 200 transitions, 430 flow. Second operand has 4 states, 4 states have (on average 158.75) internal successors, (635), 4 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:42,917 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:17:42,917 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 200 [2022-11-18 20:17:42,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:17:43,064 INFO L130 PetriNetUnfolder]: 10/361 cut-off events. [2022-11-18 20:17:43,065 INFO L131 PetriNetUnfolder]: For 43/99 co-relation queries the response was YES. [2022-11-18 20:17:43,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 437 conditions, 361 events. 10/361 cut-off events. For 43/99 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1149 event pairs, 1 based on Foata normal form. 308/622 useless extension candidates. Maximal degree in co-relation 269. Up to 40 conditions per place. [2022-11-18 20:17:43,069 INFO L137 encePairwiseOnDemand]: 169/200 looper letters, 21 selfloop transitions, 4 changer transitions 0/182 dead transitions. [2022-11-18 20:17:43,069 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 182 transitions, 444 flow [2022-11-18 20:17:43,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:17:43,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:17:43,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 856 transitions. [2022-11-18 20:17:43,072 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.856 [2022-11-18 20:17:43,072 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 856 transitions. [2022-11-18 20:17:43,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 856 transitions. [2022-11-18 20:17:43,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:17:43,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 856 transitions. [2022-11-18 20:17:43,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 171.2) internal successors, (856), 5 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:43,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 200.0) internal successors, (1200), 6 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:43,077 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 200.0) internal successors, (1200), 6 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:43,078 INFO L175 Difference]: Start difference. First operand has 179 places, 200 transitions, 430 flow. Second operand 5 states and 856 transitions. [2022-11-18 20:17:43,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 182 transitions, 444 flow [2022-11-18 20:17:43,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 182 transitions, 444 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:17:43,082 INFO L231 Difference]: Finished difference. Result has 185 places, 178 transitions, 412 flow [2022-11-18 20:17:43,083 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=412, PETRI_PLACES=185, PETRI_TRANSITIONS=178} [2022-11-18 20:17:43,084 INFO L288 CegarLoopForPetriNet]: 179 programPoint places, 6 predicate places. [2022-11-18 20:17:43,084 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 178 transitions, 412 flow [2022-11-18 20:17:43,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 158.75) internal successors, (635), 4 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:43,085 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:17:43,085 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] [2022-11-18 20:17:43,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 20:17:43,086 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:17:43,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:17:43,086 INFO L85 PathProgramCache]: Analyzing trace with hash 161020753, now seen corresponding path program 1 times [2022-11-18 20:17:43,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:17:43,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725822835] [2022-11-18 20:17:43,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:17:43,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:17:43,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:43,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:17:43,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:17:43,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725822835] [2022-11-18 20:17:43,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725822835] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:17:43,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:17:43,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:17:43,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160871699] [2022-11-18 20:17:43,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:17:43,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:17:43,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:17:43,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:17:43,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:17:43,145 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 200 [2022-11-18 20:17:43,146 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 178 transitions, 412 flow. Second operand has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:43,146 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:17:43,146 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 200 [2022-11-18 20:17:43,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:17:44,917 INFO L130 PetriNetUnfolder]: 1861/7910 cut-off events. [2022-11-18 20:17:44,917 INFO L131 PetriNetUnfolder]: For 1087/1087 co-relation queries the response was YES. [2022-11-18 20:17:44,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11269 conditions, 7910 events. 1861/7910 cut-off events. For 1087/1087 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 86948 event pairs, 654 based on Foata normal form. 0/6973 useless extension candidates. Maximal degree in co-relation 11208. Up to 1995 conditions per place. [2022-11-18 20:17:45,050 INFO L137 encePairwiseOnDemand]: 192/200 looper letters, 52 selfloop transitions, 8 changer transitions 0/213 dead transitions. [2022-11-18 20:17:45,051 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 213 transitions, 644 flow [2022-11-18 20:17:45,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:17:45,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:17:45,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 814 transitions. [2022-11-18 20:17:45,054 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.814 [2022-11-18 20:17:45,054 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 814 transitions. [2022-11-18 20:17:45,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 814 transitions. [2022-11-18 20:17:45,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:17:45,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 814 transitions. [2022-11-18 20:17:45,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 162.8) internal successors, (814), 5 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:45,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 200.0) internal successors, (1200), 6 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:45,061 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 200.0) internal successors, (1200), 6 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:45,061 INFO L175 Difference]: Start difference. First operand has 185 places, 178 transitions, 412 flow. Second operand 5 states and 814 transitions. [2022-11-18 20:17:45,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 213 transitions, 644 flow [2022-11-18 20:17:45,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 213 transitions, 642 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:17:45,067 INFO L231 Difference]: Finished difference. Result has 191 places, 185 transitions, 474 flow [2022-11-18 20:17:45,068 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=474, PETRI_PLACES=191, PETRI_TRANSITIONS=185} [2022-11-18 20:17:45,070 INFO L288 CegarLoopForPetriNet]: 179 programPoint places, 12 predicate places. [2022-11-18 20:17:45,071 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 185 transitions, 474 flow [2022-11-18 20:17:45,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:45,071 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:17:45,072 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] [2022-11-18 20:17:45,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 20:17:45,072 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:17:45,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:17:45,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1829222815, now seen corresponding path program 1 times [2022-11-18 20:17:45,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:17:45,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346070369] [2022-11-18 20:17:45,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:17:45,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:17:45,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:45,143 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:17:45,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:17:45,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346070369] [2022-11-18 20:17:45,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346070369] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:17:45,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:17:45,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:17:45,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671947793] [2022-11-18 20:17:45,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:17:45,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:17:45,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:17:45,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:17:45,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:17:45,147 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 200 [2022-11-18 20:17:45,148 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 185 transitions, 474 flow. Second operand has 4 states, 4 states have (on average 160.75) internal successors, (643), 4 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:45,148 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:17:45,148 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 200 [2022-11-18 20:17:45,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:17:45,463 INFO L130 PetriNetUnfolder]: 40/864 cut-off events. [2022-11-18 20:17:45,464 INFO L131 PetriNetUnfolder]: For 172/382 co-relation queries the response was YES. [2022-11-18 20:17:45,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1097 conditions, 864 events. 40/864 cut-off events. For 172/382 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 5228 event pairs, 7 based on Foata normal form. 41/791 useless extension candidates. Maximal degree in co-relation 777. Up to 52 conditions per place. [2022-11-18 20:17:45,481 INFO L137 encePairwiseOnDemand]: 194/200 looper letters, 13 selfloop transitions, 8 changer transitions 0/185 dead transitions. [2022-11-18 20:17:45,481 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 185 transitions, 514 flow [2022-11-18 20:17:45,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:17:45,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:17:45,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 804 transitions. [2022-11-18 20:17:45,484 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.804 [2022-11-18 20:17:45,484 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 804 transitions. [2022-11-18 20:17:45,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 804 transitions. [2022-11-18 20:17:45,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:17:45,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 804 transitions. [2022-11-18 20:17:45,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 160.8) internal successors, (804), 5 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:45,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 200.0) internal successors, (1200), 6 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:45,491 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 200.0) internal successors, (1200), 6 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:45,491 INFO L175 Difference]: Start difference. First operand has 191 places, 185 transitions, 474 flow. Second operand 5 states and 804 transitions. [2022-11-18 20:17:45,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 185 transitions, 514 flow [2022-11-18 20:17:45,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 185 transitions, 510 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:17:45,496 INFO L231 Difference]: Finished difference. Result has 194 places, 185 transitions, 490 flow [2022-11-18 20:17:45,496 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=490, PETRI_PLACES=194, PETRI_TRANSITIONS=185} [2022-11-18 20:17:45,498 INFO L288 CegarLoopForPetriNet]: 179 programPoint places, 15 predicate places. [2022-11-18 20:17:45,498 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 185 transitions, 490 flow [2022-11-18 20:17:45,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 160.75) internal successors, (643), 4 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:45,499 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:17:45,499 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 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] [2022-11-18 20:17:45,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 20:17:45,500 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:17:45,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:17:45,501 INFO L85 PathProgramCache]: Analyzing trace with hash -871331785, now seen corresponding path program 1 times [2022-11-18 20:17:45,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:17:45,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73205063] [2022-11-18 20:17:45,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:17:45,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:17:45,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:45,583 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:17:45,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:17:45,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73205063] [2022-11-18 20:17:45,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73205063] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:17:45,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059040630] [2022-11-18 20:17:45,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:17:45,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:17:45,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15b574ee-9982-4c00-b6e9-2f662c269312/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:17:45,586 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15b574ee-9982-4c00-b6e9-2f662c269312/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:17:45,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15b574ee-9982-4c00-b6e9-2f662c269312/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:17:45,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:45,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:17:45,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:17:45,757 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:17:45,757 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:17:45,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059040630] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:17:45,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:17:45,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 20:17:45,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897150293] [2022-11-18 20:17:45,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:17:45,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:17:45,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:17:45,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:17:45,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:17:45,764 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 200 [2022-11-18 20:17:45,765 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 185 transitions, 490 flow. Second operand has 6 states, 6 states have (on average 159.66666666666666) internal successors, (958), 6 states have internal predecessors, (958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:45,766 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:17:45,766 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 200 [2022-11-18 20:17:45,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:17:46,060 INFO L130 PetriNetUnfolder]: 40/862 cut-off events. [2022-11-18 20:17:46,060 INFO L131 PetriNetUnfolder]: For 186/379 co-relation queries the response was YES. [2022-11-18 20:17:46,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1106 conditions, 862 events. 40/862 cut-off events. For 186/379 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 5215 event pairs, 7 based on Foata normal form. 18/766 useless extension candidates. Maximal degree in co-relation 777. Up to 58 conditions per place. [2022-11-18 20:17:46,076 INFO L137 encePairwiseOnDemand]: 195/200 looper letters, 17 selfloop transitions, 6 changer transitions 0/187 dead transitions. [2022-11-18 20:17:46,077 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 187 transitions, 538 flow [2022-11-18 20:17:46,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:17:46,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:17:46,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1123 transitions. [2022-11-18 20:17:46,080 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8021428571428572 [2022-11-18 20:17:46,080 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1123 transitions. [2022-11-18 20:17:46,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1123 transitions. [2022-11-18 20:17:46,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:17:46,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1123 transitions. [2022-11-18 20:17:46,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 160.42857142857142) internal successors, (1123), 7 states have internal predecessors, (1123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:46,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 200.0) internal successors, (1600), 8 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:46,088 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 200.0) internal successors, (1600), 8 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:46,089 INFO L175 Difference]: Start difference. First operand has 194 places, 185 transitions, 490 flow. Second operand 7 states and 1123 transitions. [2022-11-18 20:17:46,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 187 transitions, 538 flow [2022-11-18 20:17:46,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 187 transitions, 526 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:17:46,094 INFO L231 Difference]: Finished difference. Result has 196 places, 184 transitions, 486 flow [2022-11-18 20:17:46,095 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=486, PETRI_PLACES=196, PETRI_TRANSITIONS=184} [2022-11-18 20:17:46,095 INFO L288 CegarLoopForPetriNet]: 179 programPoint places, 17 predicate places. [2022-11-18 20:17:46,096 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 184 transitions, 486 flow [2022-11-18 20:17:46,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 159.66666666666666) internal successors, (958), 6 states have internal predecessors, (958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:46,096 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:17:46,097 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] [2022-11-18 20:17:46,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15b574ee-9982-4c00-b6e9-2f662c269312/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:17:46,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15b574ee-9982-4c00-b6e9-2f662c269312/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:17:46,303 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:17:46,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:17:46,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1123135060, now seen corresponding path program 1 times [2022-11-18 20:17:46,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:17:46,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661454240] [2022-11-18 20:17:46,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:17:46,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:17:46,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:46,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:17:46,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:17:46,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661454240] [2022-11-18 20:17:46,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661454240] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:17:46,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:17:46,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:17:46,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946838908] [2022-11-18 20:17:46,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:17:46,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:17:46,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:17:46,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:17:46,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:17:46,459 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 200 [2022-11-18 20:17:46,460 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 184 transitions, 486 flow. Second operand has 6 states, 6 states have (on average 146.5) internal successors, (879), 6 states have internal predecessors, (879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:46,460 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:17:46,460 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 200 [2022-11-18 20:17:46,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:17:49,449 INFO L130 PetriNetUnfolder]: 4008/14681 cut-off events. [2022-11-18 20:17:49,450 INFO L131 PetriNetUnfolder]: For 4086/4086 co-relation queries the response was YES. [2022-11-18 20:17:49,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23608 conditions, 14681 events. 4008/14681 cut-off events. For 4086/4086 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 175981 event pairs, 971 based on Foata normal form. 0/13074 useless extension candidates. Maximal degree in co-relation 20360. Up to 2727 conditions per place. [2022-11-18 20:17:49,694 INFO L137 encePairwiseOnDemand]: 187/200 looper letters, 100 selfloop transitions, 27 changer transitions 0/274 dead transitions. [2022-11-18 20:17:49,695 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 274 transitions, 1066 flow [2022-11-18 20:17:49,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:17:49,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:17:49,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1434 transitions. [2022-11-18 20:17:49,699 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7966666666666666 [2022-11-18 20:17:49,699 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1434 transitions. [2022-11-18 20:17:49,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1434 transitions. [2022-11-18 20:17:49,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:17:49,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1434 transitions. [2022-11-18 20:17:49,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 159.33333333333334) internal successors, (1434), 9 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:49,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 200.0) internal successors, (2000), 10 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:49,710 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 200.0) internal successors, (2000), 10 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:49,711 INFO L175 Difference]: Start difference. First operand has 196 places, 184 transitions, 486 flow. Second operand 9 states and 1434 transitions. [2022-11-18 20:17:49,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 274 transitions, 1066 flow [2022-11-18 20:17:49,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 274 transitions, 1055 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-18 20:17:49,727 INFO L231 Difference]: Finished difference. Result has 205 places, 203 transitions, 679 flow [2022-11-18 20:17:49,728 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=679, PETRI_PLACES=205, PETRI_TRANSITIONS=203} [2022-11-18 20:17:49,728 INFO L288 CegarLoopForPetriNet]: 179 programPoint places, 26 predicate places. [2022-11-18 20:17:49,728 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 203 transitions, 679 flow [2022-11-18 20:17:49,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 146.5) internal successors, (879), 6 states have internal predecessors, (879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:49,729 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:17:49,729 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] [2022-11-18 20:17:49,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 20:17:49,730 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:17:49,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:17:49,731 INFO L85 PathProgramCache]: Analyzing trace with hash 457449289, now seen corresponding path program 1 times [2022-11-18 20:17:49,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:17:49,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387837622] [2022-11-18 20:17:49,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:17:49,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:17:49,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:49,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:17:49,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:17:49,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387837622] [2022-11-18 20:17:49,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387837622] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:17:49,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:17:49,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:17:49,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552517845] [2022-11-18 20:17:49,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:17:49,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:17:49,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:17:49,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:17:49,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:17:49,860 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 200 [2022-11-18 20:17:49,861 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 203 transitions, 679 flow. Second operand has 6 states, 6 states have (on average 146.66666666666666) internal successors, (880), 6 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:49,861 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:17:49,861 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 200 [2022-11-18 20:17:49,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:17:52,649 INFO L130 PetriNetUnfolder]: 3817/13588 cut-off events. [2022-11-18 20:17:52,649 INFO L131 PetriNetUnfolder]: For 12657/12881 co-relation queries the response was YES. [2022-11-18 20:17:52,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27218 conditions, 13588 events. 3817/13588 cut-off events. For 12657/12881 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 158874 event pairs, 1099 based on Foata normal form. 248/12467 useless extension candidates. Maximal degree in co-relation 20418. Up to 2976 conditions per place. [2022-11-18 20:17:52,866 INFO L137 encePairwiseOnDemand]: 187/200 looper letters, 107 selfloop transitions, 27 changer transitions 0/281 dead transitions. [2022-11-18 20:17:52,866 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 281 transitions, 1324 flow [2022-11-18 20:17:52,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:17:52,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:17:52,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1432 transitions. [2022-11-18 20:17:52,871 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7955555555555556 [2022-11-18 20:17:52,871 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1432 transitions. [2022-11-18 20:17:52,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1432 transitions. [2022-11-18 20:17:52,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:17:52,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1432 transitions. [2022-11-18 20:17:52,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 159.11111111111111) internal successors, (1432), 9 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:52,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 200.0) internal successors, (2000), 10 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:52,881 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 200.0) internal successors, (2000), 10 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:52,882 INFO L175 Difference]: Start difference. First operand has 205 places, 203 transitions, 679 flow. Second operand 9 states and 1432 transitions. [2022-11-18 20:17:52,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 281 transitions, 1324 flow [2022-11-18 20:17:52,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 281 transitions, 1257 flow, removed 20 selfloop flow, removed 4 redundant places. [2022-11-18 20:17:52,927 INFO L231 Difference]: Finished difference. Result has 211 places, 211 transitions, 760 flow [2022-11-18 20:17:52,927 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=760, PETRI_PLACES=211, PETRI_TRANSITIONS=211} [2022-11-18 20:17:52,928 INFO L288 CegarLoopForPetriNet]: 179 programPoint places, 32 predicate places. [2022-11-18 20:17:52,928 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 211 transitions, 760 flow [2022-11-18 20:17:52,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 146.66666666666666) internal successors, (880), 6 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:52,929 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:17:52,930 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-18 20:17:52,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 20:17:52,930 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:17:52,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:17:52,931 INFO L85 PathProgramCache]: Analyzing trace with hash 556356755, now seen corresponding path program 1 times [2022-11-18 20:17:52,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:17:52,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15450249] [2022-11-18 20:17:52,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:17:52,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:17:52,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:52,998 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:17:52,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:17:52,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15450249] [2022-11-18 20:17:52,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15450249] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:17:52,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:17:52,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:17:52,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145423830] [2022-11-18 20:17:52,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:17:53,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:17:53,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:17:53,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:17:53,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:17:53,002 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 200 [2022-11-18 20:17:53,003 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 211 transitions, 760 flow. Second operand has 4 states, 4 states have (on average 151.25) internal successors, (605), 4 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:53,003 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:17:53,003 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 200 [2022-11-18 20:17:53,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:17:56,288 INFO L130 PetriNetUnfolder]: 4340/18329 cut-off events. [2022-11-18 20:17:56,288 INFO L131 PetriNetUnfolder]: For 16954/17324 co-relation queries the response was YES. [2022-11-18 20:17:56,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35989 conditions, 18329 events. 4340/18329 cut-off events. For 16954/17324 co-relation queries the response was YES. Maximal size of possible extension queue 807. Compared 236506 event pairs, 1561 based on Foata normal form. 212/16628 useless extension candidates. Maximal degree in co-relation 32398. Up to 4797 conditions per place. [2022-11-18 20:17:56,576 INFO L137 encePairwiseOnDemand]: 192/200 looper letters, 93 selfloop transitions, 11 changer transitions 0/260 dead transitions. [2022-11-18 20:17:56,576 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 260 transitions, 1276 flow [2022-11-18 20:17:56,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:17:56,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:17:56,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 812 transitions. [2022-11-18 20:17:56,579 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.812 [2022-11-18 20:17:56,580 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 812 transitions. [2022-11-18 20:17:56,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 812 transitions. [2022-11-18 20:17:56,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:17:56,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 812 transitions. [2022-11-18 20:17:56,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 162.4) internal successors, (812), 5 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:56,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 200.0) internal successors, (1200), 6 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:56,586 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 200.0) internal successors, (1200), 6 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:56,586 INFO L175 Difference]: Start difference. First operand has 211 places, 211 transitions, 760 flow. Second operand 5 states and 812 transitions. [2022-11-18 20:17:56,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 260 transitions, 1276 flow [2022-11-18 20:17:56,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 260 transitions, 1234 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-18 20:17:56,667 INFO L231 Difference]: Finished difference. Result has 214 places, 216 transitions, 810 flow [2022-11-18 20:17:56,668 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=735, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=810, PETRI_PLACES=214, PETRI_TRANSITIONS=216} [2022-11-18 20:17:56,668 INFO L288 CegarLoopForPetriNet]: 179 programPoint places, 35 predicate places. [2022-11-18 20:17:56,668 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 216 transitions, 810 flow [2022-11-18 20:17:56,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 151.25) internal successors, (605), 4 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:56,669 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:17:56,669 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-18 20:17:56,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 20:17:56,670 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:17:56,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:17:56,670 INFO L85 PathProgramCache]: Analyzing trace with hash -430259446, now seen corresponding path program 1 times [2022-11-18 20:17:56,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:17:56,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796692665] [2022-11-18 20:17:56,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:17:56,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:17:56,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:56,770 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:17:56,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:17:56,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796692665] [2022-11-18 20:17:56,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796692665] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:17:56,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:17:56,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:17:56,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804910373] [2022-11-18 20:17:56,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:17:56,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:17:56,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:17:56,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:17:56,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:17:56,775 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 200 [2022-11-18 20:17:56,776 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 216 transitions, 810 flow. Second operand has 6 states, 6 states have (on average 146.66666666666666) internal successors, (880), 6 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:56,776 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:17:56,776 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 200 [2022-11-18 20:17:56,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:18:03,762 INFO L130 PetriNetUnfolder]: 9322/35901 cut-off events. [2022-11-18 20:18:03,763 INFO L131 PetriNetUnfolder]: For 32647/33945 co-relation queries the response was YES. [2022-11-18 20:18:04,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71736 conditions, 35901 events. 9322/35901 cut-off events. For 32647/33945 co-relation queries the response was YES. Maximal size of possible extension queue 1641. Compared 505660 event pairs, 3511 based on Foata normal form. 441/32657 useless extension candidates. Maximal degree in co-relation 49469. Up to 7067 conditions per place. [2022-11-18 20:18:04,291 INFO L137 encePairwiseOnDemand]: 187/200 looper letters, 149 selfloop transitions, 46 changer transitions 0/346 dead transitions. [2022-11-18 20:18:04,291 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 346 transitions, 1956 flow [2022-11-18 20:18:04,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:18:04,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:18:04,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1431 transitions. [2022-11-18 20:18:04,295 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.795 [2022-11-18 20:18:04,295 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1431 transitions. [2022-11-18 20:18:04,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1431 transitions. [2022-11-18 20:18:04,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:18:04,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1431 transitions. [2022-11-18 20:18:04,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 159.0) internal successors, (1431), 9 states have internal predecessors, (1431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:04,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 200.0) internal successors, (2000), 10 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:04,306 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 200.0) internal successors, (2000), 10 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:04,307 INFO L175 Difference]: Start difference. First operand has 214 places, 216 transitions, 810 flow. Second operand 9 states and 1431 transitions. [2022-11-18 20:18:04,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 346 transitions, 1956 flow [2022-11-18 20:18:04,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 346 transitions, 1950 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:18:04,546 INFO L231 Difference]: Finished difference. Result has 227 places, 251 transitions, 1294 flow [2022-11-18 20:18:04,547 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=805, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1294, PETRI_PLACES=227, PETRI_TRANSITIONS=251} [2022-11-18 20:18:04,547 INFO L288 CegarLoopForPetriNet]: 179 programPoint places, 48 predicate places. [2022-11-18 20:18:04,548 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 251 transitions, 1294 flow [2022-11-18 20:18:04,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 146.66666666666666) internal successors, (880), 6 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:04,549 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:18:04,549 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-18 20:18:04,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 20:18:04,550 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:18:04,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:04,552 INFO L85 PathProgramCache]: Analyzing trace with hash -598489023, now seen corresponding path program 1 times [2022-11-18 20:18:04,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:04,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581002589] [2022-11-18 20:18:04,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:04,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:04,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:04,780 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:18:04,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:04,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581002589] [2022-11-18 20:18:04,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581002589] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:18:04,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654192227] [2022-11-18 20:18:04,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:04,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:18:04,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15b574ee-9982-4c00-b6e9-2f662c269312/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:18:04,782 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15b574ee-9982-4c00-b6e9-2f662c269312/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:18:04,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15b574ee-9982-4c00-b6e9-2f662c269312/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:18:04,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:04,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:18:04,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:18:05,039 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:18:05,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:18:05,190 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:18:05,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654192227] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:18:05,190 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:18:05,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 14 [2022-11-18 20:18:05,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398379444] [2022-11-18 20:18:05,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:18:05,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 20:18:05,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:05,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 20:18:05,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:18:05,194 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 200 [2022-11-18 20:18:05,196 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 251 transitions, 1294 flow. Second operand has 14 states, 14 states have (on average 115.5) internal successors, (1617), 14 states have internal predecessors, (1617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:05,197 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:18:05,197 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 200 [2022-11-18 20:18:05,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:18:13,385 INFO L130 PetriNetUnfolder]: 8819/33664 cut-off events. [2022-11-18 20:18:13,385 INFO L131 PetriNetUnfolder]: For 45771/46468 co-relation queries the response was YES. [2022-11-18 20:18:13,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70612 conditions, 33664 events. 8819/33664 cut-off events. For 45771/46468 co-relation queries the response was YES. Maximal size of possible extension queue 1142. Compared 441101 event pairs, 1245 based on Foata normal form. 2353/33547 useless extension candidates. Maximal degree in co-relation 57660. Up to 6302 conditions per place. [2022-11-18 20:18:13,774 INFO L137 encePairwiseOnDemand]: 175/200 looper letters, 489 selfloop transitions, 232 changer transitions 0/839 dead transitions. [2022-11-18 20:18:13,774 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 839 transitions, 5583 flow [2022-11-18 20:18:13,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-18 20:18:13,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-18 20:18:13,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 5553 transitions. [2022-11-18 20:18:13,791 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6310227272727272 [2022-11-18 20:18:13,791 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 5553 transitions. [2022-11-18 20:18:13,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 5553 transitions. [2022-11-18 20:18:13,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:18:13,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 5553 transitions. [2022-11-18 20:18:13,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 126.20454545454545) internal successors, (5553), 44 states have internal predecessors, (5553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:13,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 200.0) internal successors, (9000), 45 states have internal predecessors, (9000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:13,834 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 200.0) internal successors, (9000), 45 states have internal predecessors, (9000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:13,834 INFO L175 Difference]: Start difference. First operand has 227 places, 251 transitions, 1294 flow. Second operand 44 states and 5553 transitions. [2022-11-18 20:18:13,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 839 transitions, 5583 flow [2022-11-18 20:18:14,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 839 transitions, 5516 flow, removed 17 selfloop flow, removed 3 redundant places. [2022-11-18 20:18:14,096 INFO L231 Difference]: Finished difference. Result has 286 places, 440 transitions, 3407 flow [2022-11-18 20:18:14,097 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=1250, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=3407, PETRI_PLACES=286, PETRI_TRANSITIONS=440} [2022-11-18 20:18:14,097 INFO L288 CegarLoopForPetriNet]: 179 programPoint places, 107 predicate places. [2022-11-18 20:18:14,097 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 440 transitions, 3407 flow [2022-11-18 20:18:14,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 115.5) internal successors, (1617), 14 states have internal predecessors, (1617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:14,098 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:18:14,098 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-18 20:18:14,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15b574ee-9982-4c00-b6e9-2f662c269312/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:18:14,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15b574ee-9982-4c00-b6e9-2f662c269312/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:18:14,307 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:18:14,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:14,308 INFO L85 PathProgramCache]: Analyzing trace with hash -453140213, now seen corresponding path program 1 times [2022-11-18 20:18:14,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:14,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706608599] [2022-11-18 20:18:14,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:14,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:14,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:14,657 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:18:14,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:14,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706608599] [2022-11-18 20:18:14,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706608599] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:18:14,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:18:14,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:18:14,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157021399] [2022-11-18 20:18:14,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:18:14,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:18:14,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:14,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:18:14,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:18:14,662 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 200 [2022-11-18 20:18:14,664 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 440 transitions, 3407 flow. Second operand has 6 states, 6 states have (on average 146.83333333333334) internal successors, (881), 6 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:14,664 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:18:14,664 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 200 [2022-11-18 20:18:14,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:18:20,083 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([781] t_funEXIT-->L711-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem14#1_11| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_t_funThread1of3ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_11|, t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_11|, t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4} AuxVars[] AssignedVars[][401], [395#true, 161#L701-16true, Black: 381#(<= |t_funThread1of3ForFork0_#t~post7| 1), Black: 385#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1)), Black: 380#(<= ~global~0 1), Black: 387#(and (<= |t_funThread1of3ForFork0_#t~post7| 1) (<= ~global~0 1)), Black: 379#(= |t_funThread1of3ForFork0_#t~post5| 0), Black: 850#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< ~global~0 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 869#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread1of3ForFork0_#t~post5| 0)), Black: 901#(and (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 842#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= ~global~0 1)), Black: 877#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 406#(and (<= 1 ~global~0) (<= 1 |t_funThread1of3ForFork0_#t~post7|)), Black: 897#(and (<= |~#__global_lock~0.base| 3) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 399#(<= 1 ~global~0), Black: 840#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1)), Black: 848#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< ~global~0 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 846#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 867#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 887#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (< ~global~0 2147483647)), Black: 881#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 891#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (< ~global~0 2147483647)), Black: 873#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 412#(= ~global~0 0), Black: 885#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (< ~global~0 2147483647) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 413#(= |t_funThread2of3ForFork0_#t~post5| 0), Black: 903#(and (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (< ~global~0 2147483647)), 832#(and (<= |~#__global_lock~0.base| 3) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 415#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post5| 0)), Black: 893#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 875#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1)), 215#(<= 1 |ULTIMATE.start_main_~i~0#1|), t_funThread1of3ForFork0NotInUse, Black: 424#(<= ~global~0 1), t_funThread2of3ForFork0InUse, Black: 420#true, Black: 425#(<= |t_funThread2of3ForFork0_#t~post7| 1), t_funThread3of3ForFork0NotInUse, Black: 423#(= |t_funThread2of3ForFork0_#t~post5| 0), Black: 429#(and (<= ~global~0 1) (= |t_funThread2of3ForFork0_#t~post5| 0)), 431#(and (<= |t_funThread2of3ForFork0_#t~post7| 1) (<= ~global~0 1)), Black: 187#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), Black: 184#(= |ULTIMATE.start_main_~i~0#1| 0), 376#true, Black: 194#(= ~global~0 0), Black: 195#(= |t_funThread1of3ForFork0_#t~post5| 0), Black: 197#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (= ~global~0 0)), 202#true, 8#L711-5true, 939#(<= 1 |t_funThread2of3ForFork0_#t~post7|)]) [2022-11-18 20:18:20,083 INFO L383 tUnfolder$Statistics]: this new event has 164 ancestors and is cut-off event [2022-11-18 20:18:20,083 INFO L386 tUnfolder$Statistics]: existing Event has 117 ancestors and is cut-off event [2022-11-18 20:18:20,083 INFO L386 tUnfolder$Statistics]: existing Event has 117 ancestors and is cut-off event [2022-11-18 20:18:20,083 INFO L386 tUnfolder$Statistics]: existing Event has 117 ancestors and is cut-off event [2022-11-18 20:18:20,119 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([781] t_funEXIT-->L711-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem14#1_11| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_t_funThread1of3ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_11|, t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_11|, t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4} AuxVars[] AssignedVars[][217], [395#true, Black: 381#(<= |t_funThread1of3ForFork0_#t~post7| 1), Black: 385#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1)), Black: 380#(<= ~global~0 1), Black: 387#(and (<= |t_funThread1of3ForFork0_#t~post7| 1) (<= ~global~0 1)), Black: 379#(= |t_funThread1of3ForFork0_#t~post5| 0), Black: 850#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< ~global~0 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 869#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread1of3ForFork0_#t~post5| 0)), Black: 901#(and (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 842#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= ~global~0 1)), Black: 877#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 406#(and (<= 1 ~global~0) (<= 1 |t_funThread1of3ForFork0_#t~post7|)), Black: 897#(and (<= |~#__global_lock~0.base| 3) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 399#(<= 1 ~global~0), Black: 840#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1)), Black: 848#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< ~global~0 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 846#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 867#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 887#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (< ~global~0 2147483647)), Black: 881#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 891#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (< ~global~0 2147483647)), Black: 873#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread2of3ForFork0_#t~post5| 1)), 424#(<= ~global~0 1), Black: 412#(= ~global~0 0), Black: 885#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (< ~global~0 2147483647) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 413#(= |t_funThread2of3ForFork0_#t~post5| 0), Black: 903#(and (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (< ~global~0 2147483647)), 832#(and (<= |~#__global_lock~0.base| 3) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 415#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post5| 0)), Black: 893#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 875#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1)), 215#(<= 1 |ULTIMATE.start_main_~i~0#1|), t_funThread1of3ForFork0NotInUse, 934#true, t_funThread2of3ForFork0InUse, Black: 420#true, Black: 425#(<= |t_funThread2of3ForFork0_#t~post7| 1), t_funThread3of3ForFork0NotInUse, Black: 431#(and (<= |t_funThread2of3ForFork0_#t~post7| 1) (<= ~global~0 1)), Black: 423#(= |t_funThread2of3ForFork0_#t~post5| 0), Black: 429#(and (<= ~global~0 1) (= |t_funThread2of3ForFork0_#t~post5| 0)), Black: 187#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), Black: 184#(= |ULTIMATE.start_main_~i~0#1| 0), 376#true, Black: 194#(= ~global~0 0), Black: 195#(= |t_funThread1of3ForFork0_#t~post5| 0), Black: 197#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (= ~global~0 0)), 168#L701-17true, 202#true, 8#L711-5true]) [2022-11-18 20:18:20,119 INFO L383 tUnfolder$Statistics]: this new event has 165 ancestors and is cut-off event [2022-11-18 20:18:20,119 INFO L386 tUnfolder$Statistics]: existing Event has 118 ancestors and is cut-off event [2022-11-18 20:18:20,119 INFO L386 tUnfolder$Statistics]: existing Event has 118 ancestors and is cut-off event [2022-11-18 20:18:20,119 INFO L386 tUnfolder$Statistics]: existing Event has 118 ancestors and is cut-off event [2022-11-18 20:18:20,171 INFO L130 PetriNetUnfolder]: 3586/26307 cut-off events. [2022-11-18 20:18:20,171 INFO L131 PetriNetUnfolder]: For 59982/61070 co-relation queries the response was YES. [2022-11-18 20:18:20,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53335 conditions, 26307 events. 3586/26307 cut-off events. For 59982/61070 co-relation queries the response was YES. Maximal size of possible extension queue 822. Compared 386385 event pairs, 1408 based on Foata normal form. 401/23628 useless extension candidates. Maximal degree in co-relation 52344. Up to 4590 conditions per place. [2022-11-18 20:18:20,505 INFO L137 encePairwiseOnDemand]: 187/200 looper letters, 219 selfloop transitions, 63 changer transitions 0/514 dead transitions. [2022-11-18 20:18:20,505 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 514 transitions, 4564 flow [2022-11-18 20:18:20,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:18:20,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:18:20,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1425 transitions. [2022-11-18 20:18:20,509 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7916666666666666 [2022-11-18 20:18:20,509 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1425 transitions. [2022-11-18 20:18:20,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1425 transitions. [2022-11-18 20:18:20,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:18:20,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1425 transitions. [2022-11-18 20:18:20,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 158.33333333333334) internal successors, (1425), 9 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:20,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 200.0) internal successors, (2000), 10 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:20,517 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 200.0) internal successors, (2000), 10 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:20,517 INFO L175 Difference]: Start difference. First operand has 286 places, 440 transitions, 3407 flow. Second operand 9 states and 1425 transitions. [2022-11-18 20:18:20,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 514 transitions, 4564 flow [2022-11-18 20:18:21,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 514 transitions, 4114 flow, removed 178 selfloop flow, removed 8 redundant places. [2022-11-18 20:18:21,106 INFO L231 Difference]: Finished difference. Result has 287 places, 442 transitions, 3162 flow [2022-11-18 20:18:21,106 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=2992, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3162, PETRI_PLACES=287, PETRI_TRANSITIONS=442} [2022-11-18 20:18:21,107 INFO L288 CegarLoopForPetriNet]: 179 programPoint places, 108 predicate places. [2022-11-18 20:18:21,107 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 442 transitions, 3162 flow [2022-11-18 20:18:21,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 146.83333333333334) internal successors, (881), 6 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:21,108 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:18:21,108 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 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] [2022-11-18 20:18:21,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-18 20:18:21,109 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:18:21,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:21,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1815986218, now seen corresponding path program 1 times [2022-11-18 20:18:21,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:21,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917391369] [2022-11-18 20:18:21,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:21,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:21,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:21,195 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 20:18:21,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:21,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917391369] [2022-11-18 20:18:21,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917391369] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:18:21,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:18:21,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:18:21,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652697517] [2022-11-18 20:18:21,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:18:21,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:18:21,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:21,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:18:21,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:18:21,199 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 200 [2022-11-18 20:18:21,200 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 442 transitions, 3162 flow. Second operand has 4 states, 4 states have (on average 151.5) internal successors, (606), 4 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:21,201 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:18:21,201 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 200 [2022-11-18 20:18:21,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:18:25,973 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([781] t_funEXIT-->L711-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem14#1_11| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_t_funThread1of3ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_11|, t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_11|, t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4} AuxVars[] AssignedVars[][206], [395#true, 161#L701-16true, Black: 381#(<= |t_funThread1of3ForFork0_#t~post7| 1), Black: 385#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1)), Black: 380#(<= ~global~0 1), Black: 387#(and (<= |t_funThread1of3ForFork0_#t~post7| 1) (<= ~global~0 1)), Black: 379#(= |t_funThread1of3ForFork0_#t~post5| 0), 948#true, Black: 850#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< ~global~0 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 869#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread1of3ForFork0_#t~post5| 0)), Black: 901#(and (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 842#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= ~global~0 1)), Black: 877#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 406#(and (<= 1 ~global~0) (<= 1 |t_funThread1of3ForFork0_#t~post7|)), Black: 897#(and (<= |~#__global_lock~0.base| 3) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 399#(<= 1 ~global~0), Black: 840#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1)), Black: 848#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< ~global~0 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 846#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 867#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 887#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (< ~global~0 2147483647)), Black: 881#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 891#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (< ~global~0 2147483647)), Black: 873#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 412#(= ~global~0 0), Black: 885#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (< ~global~0 2147483647) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 413#(= |t_funThread2of3ForFork0_#t~post5| 0), Black: 903#(and (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (< ~global~0 2147483647)), Black: 415#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post5| 0)), 832#(and (<= |~#__global_lock~0.base| 3) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 893#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 875#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1)), 215#(<= 1 |ULTIMATE.start_main_~i~0#1|), t_funThread1of3ForFork0NotInUse, Black: 424#(<= ~global~0 1), t_funThread2of3ForFork0InUse, Black: 425#(<= |t_funThread2of3ForFork0_#t~post7| 1), t_funThread3of3ForFork0NotInUse, Black: 945#(and (<= 1 ~global~0) (<= 1 |t_funThread2of3ForFork0_#t~post7|)), Black: 423#(= |t_funThread2of3ForFork0_#t~post5| 0), Black: 429#(and (<= ~global~0 1) (= |t_funThread2of3ForFork0_#t~post5| 0)), 431#(and (<= |t_funThread2of3ForFork0_#t~post7| 1) (<= ~global~0 1)), Black: 187#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), Black: 184#(= |ULTIMATE.start_main_~i~0#1| 0), 376#true, Black: 194#(= ~global~0 0), Black: 195#(= |t_funThread1of3ForFork0_#t~post5| 0), Black: 197#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (= ~global~0 0)), 202#true, 8#L711-5true, 939#(<= 1 |t_funThread2of3ForFork0_#t~post7|)]) [2022-11-18 20:18:25,973 INFO L383 tUnfolder$Statistics]: this new event has 164 ancestors and is cut-off event [2022-11-18 20:18:25,973 INFO L386 tUnfolder$Statistics]: existing Event has 117 ancestors and is cut-off event [2022-11-18 20:18:25,973 INFO L386 tUnfolder$Statistics]: existing Event has 117 ancestors and is cut-off event [2022-11-18 20:18:25,973 INFO L386 tUnfolder$Statistics]: existing Event has 117 ancestors and is cut-off event [2022-11-18 20:18:26,090 INFO L130 PetriNetUnfolder]: 2995/24018 cut-off events. [2022-11-18 20:18:26,090 INFO L131 PetriNetUnfolder]: For 50313/51429 co-relation queries the response was YES. [2022-11-18 20:18:26,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47297 conditions, 24018 events. 2995/24018 cut-off events. For 50313/51429 co-relation queries the response was YES. Maximal size of possible extension queue 827. Compared 350732 event pairs, 1358 based on Foata normal form. 394/21441 useless extension candidates. Maximal degree in co-relation 46309. Up to 4575 conditions per place. [2022-11-18 20:18:26,409 INFO L137 encePairwiseOnDemand]: 192/200 looper letters, 201 selfloop transitions, 15 changer transitions 0/488 dead transitions. [2022-11-18 20:18:26,409 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 488 transitions, 4062 flow [2022-11-18 20:18:26,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:18:26,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:18:26,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 810 transitions. [2022-11-18 20:18:26,416 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.81 [2022-11-18 20:18:26,416 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 810 transitions. [2022-11-18 20:18:26,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 810 transitions. [2022-11-18 20:18:26,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:18:26,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 810 transitions. [2022-11-18 20:18:26,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:26,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 200.0) internal successors, (1200), 6 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:26,421 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 200.0) internal successors, (1200), 6 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:26,421 INFO L175 Difference]: Start difference. First operand has 287 places, 442 transitions, 3162 flow. Second operand 5 states and 810 transitions. [2022-11-18 20:18:26,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 488 transitions, 4062 flow [2022-11-18 20:18:26,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 488 transitions, 3974 flow, removed 7 selfloop flow, removed 4 redundant places. [2022-11-18 20:18:26,653 INFO L231 Difference]: Finished difference. Result has 290 places, 446 transitions, 3178 flow [2022-11-18 20:18:26,653 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=3087, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3178, PETRI_PLACES=290, PETRI_TRANSITIONS=446} [2022-11-18 20:18:26,654 INFO L288 CegarLoopForPetriNet]: 179 programPoint places, 111 predicate places. [2022-11-18 20:18:26,654 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 446 transitions, 3178 flow [2022-11-18 20:18:26,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 151.5) internal successors, (606), 4 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:26,655 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:18:26,655 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:18:26,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-18 20:18:26,656 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:18:26,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:26,657 INFO L85 PathProgramCache]: Analyzing trace with hash 125330092, now seen corresponding path program 1 times [2022-11-18 20:18:26,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:26,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563740555] [2022-11-18 20:18:26,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:26,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:26,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:18:26,685 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:18:26,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:18:26,712 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:18:26,713 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 20:18:26,713 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-11-18 20:18:26,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2022-11-18 20:18:26,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2022-11-18 20:18:26,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2022-11-18 20:18:26,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2022-11-18 20:18:26,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2022-11-18 20:18:26,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2022-11-18 20:18:26,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2022-11-18 20:18:26,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2022-11-18 20:18:26,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2022-11-18 20:18:26,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2022-11-18 20:18:26,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2022-11-18 20:18:26,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2022-11-18 20:18:26,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2022-11-18 20:18:26,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2022-11-18 20:18:26,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2022-11-18 20:18:26,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2022-11-18 20:18:26,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2022-11-18 20:18:26,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2022-11-18 20:18:26,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2022-11-18 20:18:26,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2022-11-18 20:18:26,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-18 20:18:26,718 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:18:26,719 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 20:18:26,719 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-18 20:18:26,753 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-18 20:18:26,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 212 places, 238 transitions, 520 flow [2022-11-18 20:18:26,868 INFO L130 PetriNetUnfolder]: 91/671 cut-off events. [2022-11-18 20:18:26,868 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-11-18 20:18:26,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 726 conditions, 671 events. 91/671 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2639 event pairs, 6 based on Foata normal form. 0/526 useless extension candidates. Maximal degree in co-relation 452. Up to 32 conditions per place. [2022-11-18 20:18:26,879 INFO L82 GeneralOperation]: Start removeDead. Operand has 212 places, 238 transitions, 520 flow [2022-11-18 20:18:26,886 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 212 places, 238 transitions, 520 flow [2022-11-18 20:18:26,887 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:18:26,888 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;@2f802a7a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:18:26,888 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-11-18 20:18:26,893 INFO L130 PetriNetUnfolder]: 4/67 cut-off events. [2022-11-18 20:18:26,893 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:18:26,894 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:18:26,894 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] [2022-11-18 20:18:26,894 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-18 20:18:26,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:26,895 INFO L85 PathProgramCache]: Analyzing trace with hash -115930237, now seen corresponding path program 1 times [2022-11-18 20:18:26,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:26,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237657700] [2022-11-18 20:18:26,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:26,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:26,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:26,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:18:26,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:26,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237657700] [2022-11-18 20:18:26,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237657700] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:18:26,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:18:26,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:18:26,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656503797] [2022-11-18 20:18:26,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:18:26,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:18:26,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:26,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:18:26,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:18:26,940 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 238 [2022-11-18 20:18:26,941 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 238 transitions, 520 flow. Second operand has 4 states, 4 states have (on average 188.75) internal successors, (755), 4 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:26,941 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:18:26,942 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 238 [2022-11-18 20:18:26,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:18:27,112 INFO L130 PetriNetUnfolder]: 24/580 cut-off events. [2022-11-18 20:18:27,113 INFO L131 PetriNetUnfolder]: For 143/273 co-relation queries the response was YES. [2022-11-18 20:18:27,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 714 conditions, 580 events. 24/580 cut-off events. For 143/273 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 2382 event pairs, 6 based on Foata normal form. 632/1132 useless extension candidates. Maximal degree in co-relation 441. Up to 71 conditions per place. [2022-11-18 20:18:27,121 INFO L137 encePairwiseOnDemand]: 201/238 looper letters, 23 selfloop transitions, 4 changer transitions 0/214 dead transitions. [2022-11-18 20:18:27,121 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 214 transitions, 526 flow [2022-11-18 20:18:27,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:18:27,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:18:27,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1014 transitions. [2022-11-18 20:18:27,124 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8521008403361344 [2022-11-18 20:18:27,124 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1014 transitions. [2022-11-18 20:18:27,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1014 transitions. [2022-11-18 20:18:27,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:18:27,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1014 transitions. [2022-11-18 20:18:27,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 202.8) internal successors, (1014), 5 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:27,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 238.0) internal successors, (1428), 6 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) [2022-11-18 20:18:27,130 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 238.0) internal successors, (1428), 6 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) [2022-11-18 20:18:27,130 INFO L175 Difference]: Start difference. First operand has 212 places, 238 transitions, 520 flow. Second operand 5 states and 1014 transitions. [2022-11-18 20:18:27,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 214 transitions, 526 flow [2022-11-18 20:18:27,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 214 transitions, 526 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:18:27,135 INFO L231 Difference]: Finished difference. Result has 218 places, 210 transitions, 490 flow [2022-11-18 20:18:27,136 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=490, PETRI_PLACES=218, PETRI_TRANSITIONS=210} [2022-11-18 20:18:27,136 INFO L288 CegarLoopForPetriNet]: 212 programPoint places, 6 predicate places. [2022-11-18 20:18:27,136 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 210 transitions, 490 flow [2022-11-18 20:18:27,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 188.75) internal successors, (755), 4 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:27,137 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:18:27,137 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] [2022-11-18 20:18:27,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-18 20:18:27,138 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-18 20:18:27,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:27,139 INFO L85 PathProgramCache]: Analyzing trace with hash 87849525, now seen corresponding path program 1 times [2022-11-18 20:18:27,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:27,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146421522] [2022-11-18 20:18:27,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:27,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:27,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:27,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:18:27,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:27,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146421522] [2022-11-18 20:18:27,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146421522] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:18:27,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:18:27,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:18:27,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342296317] [2022-11-18 20:18:27,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:18:27,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:18:27,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:27,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:18:27,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:18:27,197 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 238 [2022-11-18 20:18:27,200 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 210 transitions, 490 flow. Second operand has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:27,200 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:18:27,200 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 238 [2022-11-18 20:18:27,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:18:36,632 INFO L130 PetriNetUnfolder]: 15478/55517 cut-off events. [2022-11-18 20:18:36,632 INFO L131 PetriNetUnfolder]: For 9933/9933 co-relation queries the response was YES. [2022-11-18 20:18:37,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81038 conditions, 55517 events. 15478/55517 cut-off events. For 9933/9933 co-relation queries the response was YES. Maximal size of possible extension queue 1694. Compared 785523 event pairs, 9757 based on Foata normal form. 0/48292 useless extension candidates. Maximal degree in co-relation 80976. Up to 15260 conditions per place. [2022-11-18 20:18:37,354 INFO L137 encePairwiseOnDemand]: 229/238 looper letters, 68 selfloop transitions, 10 changer transitions 0/257 dead transitions. [2022-11-18 20:18:37,354 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 257 transitions, 812 flow [2022-11-18 20:18:37,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:18:37,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:18:37,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 962 transitions. [2022-11-18 20:18:37,357 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8084033613445378 [2022-11-18 20:18:37,357 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 962 transitions. [2022-11-18 20:18:37,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 962 transitions. [2022-11-18 20:18:37,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:18:37,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 962 transitions. [2022-11-18 20:18:37,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 192.4) internal successors, (962), 5 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:37,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 238.0) internal successors, (1428), 6 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) [2022-11-18 20:18:37,363 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 238.0) internal successors, (1428), 6 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) [2022-11-18 20:18:37,363 INFO L175 Difference]: Start difference. First operand has 218 places, 210 transitions, 490 flow. Second operand 5 states and 962 transitions. [2022-11-18 20:18:37,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 257 transitions, 812 flow [2022-11-18 20:18:37,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 257 transitions, 810 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:18:37,374 INFO L231 Difference]: Finished difference. Result has 224 places, 219 transitions, 567 flow [2022-11-18 20:18:37,375 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=567, PETRI_PLACES=224, PETRI_TRANSITIONS=219} [2022-11-18 20:18:37,375 INFO L288 CegarLoopForPetriNet]: 212 programPoint places, 12 predicate places. [2022-11-18 20:18:37,375 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 219 transitions, 567 flow [2022-11-18 20:18:37,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:37,376 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:18:37,376 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] [2022-11-18 20:18:37,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-18 20:18:37,377 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-18 20:18:37,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:37,377 INFO L85 PathProgramCache]: Analyzing trace with hash 2082894953, now seen corresponding path program 1 times [2022-11-18 20:18:37,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:37,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216660286] [2022-11-18 20:18:37,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:37,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:37,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:37,420 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:18:37,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:37,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216660286] [2022-11-18 20:18:37,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216660286] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:18:37,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:18:37,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:18:37,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756166657] [2022-11-18 20:18:37,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:18:37,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:18:37,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:37,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:18:37,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:18:37,423 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 238 [2022-11-18 20:18:37,424 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 219 transitions, 567 flow. Second operand has 4 states, 4 states have (on average 190.75) internal successors, (763), 4 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:37,424 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:18:37,424 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 238 [2022-11-18 20:18:37,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:18:37,881 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1056] t_funEXIT-->L711-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem14#1_18| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_t_funThread1of4ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} AuxVars[] AssignedVars[][124], [Black: 217#(= |ULTIMATE.start_main_~i~0#1| 0), 235#true, 99#L711-5true, Black: 227#(= ~global~0 0), Black: 230#(and (= |t_funThread1of4ForFork0_#t~post5| 0) (= ~global~0 0)), Black: 228#(= |t_funThread1of4ForFork0_#t~post5| 0), t_funThread1of4ForFork0NotInUse, t_funThread2of4ForFork0InUse, 225#true, t_funThread3of4ForFork0NotInUse, t_funThread4of4ForFork0NotInUse, 21#t_funENTRYtrue, Black: 220#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), Black: 218#(= |ULTIMATE.start_main_#t~post8#1| 0)]) [2022-11-18 20:18:37,881 INFO L383 tUnfolder$Statistics]: this new event has 192 ancestors and is cut-off event [2022-11-18 20:18:37,881 INFO L386 tUnfolder$Statistics]: existing Event has 98 ancestors and is cut-off event [2022-11-18 20:18:37,881 INFO L386 tUnfolder$Statistics]: existing Event has 145 ancestors and is cut-off event [2022-11-18 20:18:37,881 INFO L386 tUnfolder$Statistics]: existing Event has 145 ancestors and is cut-off event [2022-11-18 20:18:37,917 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1056] t_funEXIT-->L711-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem14#1_18| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_t_funThread1of4ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} AuxVars[] AssignedVars[][124], [Black: 217#(= |ULTIMATE.start_main_~i~0#1| 0), 170#L701-6true, 235#true, 99#L711-5true, Black: 227#(= ~global~0 0), Black: 230#(and (= |t_funThread1of4ForFork0_#t~post5| 0) (= ~global~0 0)), Black: 228#(= |t_funThread1of4ForFork0_#t~post5| 0), t_funThread1of4ForFork0NotInUse, t_funThread2of4ForFork0InUse, 225#true, t_funThread3of4ForFork0NotInUse, t_funThread4of4ForFork0NotInUse, Black: 220#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), Black: 218#(= |ULTIMATE.start_main_#t~post8#1| 0)]) [2022-11-18 20:18:37,917 INFO L383 tUnfolder$Statistics]: this new event has 202 ancestors and is cut-off event [2022-11-18 20:18:37,917 INFO L386 tUnfolder$Statistics]: existing Event has 202 ancestors and is cut-off event [2022-11-18 20:18:37,917 INFO L386 tUnfolder$Statistics]: existing Event has 108 ancestors and is cut-off event [2022-11-18 20:18:37,917 INFO L386 tUnfolder$Statistics]: existing Event has 155 ancestors and is cut-off event [2022-11-18 20:18:37,936 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1056] t_funEXIT-->L711-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem14#1_18| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_t_funThread1of4ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} AuxVars[] AssignedVars[][124], [Black: 217#(= |ULTIMATE.start_main_~i~0#1| 0), 235#true, 99#L711-5true, Black: 227#(= ~global~0 0), Black: 230#(and (= |t_funThread1of4ForFork0_#t~post5| 0) (= ~global~0 0)), Black: 228#(= |t_funThread1of4ForFork0_#t~post5| 0), t_funThread1of4ForFork0NotInUse, t_funThread2of4ForFork0NotInUse, 225#true, t_funThread3of4ForFork0NotInUse, t_funThread4of4ForFork0NotInUse, Black: 220#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), Black: 218#(= |ULTIMATE.start_main_#t~post8#1| 0)]) [2022-11-18 20:18:37,936 INFO L383 tUnfolder$Statistics]: this new event has 227 ancestors and is cut-off event [2022-11-18 20:18:37,936 INFO L386 tUnfolder$Statistics]: existing Event has 86 ancestors and is cut-off event [2022-11-18 20:18:37,936 INFO L386 tUnfolder$Statistics]: existing Event has 133 ancestors and is cut-off event [2022-11-18 20:18:37,936 INFO L386 tUnfolder$Statistics]: existing Event has 133 ancestors and is cut-off event [2022-11-18 20:18:37,940 INFO L130 PetriNetUnfolder]: 168/2695 cut-off events. [2022-11-18 20:18:37,940 INFO L131 PetriNetUnfolder]: For 832/1807 co-relation queries the response was YES. [2022-11-18 20:18:37,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3386 conditions, 2695 events. 168/2695 cut-off events. For 832/1807 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 23116 event pairs, 64 based on Foata normal form. 108/2390 useless extension candidates. Maximal degree in co-relation 2647. Up to 205 conditions per place. [2022-11-18 20:18:37,986 INFO L137 encePairwiseOnDemand]: 232/238 looper letters, 15 selfloop transitions, 8 changer transitions 0/219 dead transitions. [2022-11-18 20:18:37,986 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 219 transitions, 611 flow [2022-11-18 20:18:37,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:18:37,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:18:37,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 956 transitions. [2022-11-18 20:18:37,989 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8033613445378152 [2022-11-18 20:18:37,989 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 956 transitions. [2022-11-18 20:18:37,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 956 transitions. [2022-11-18 20:18:37,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:18:37,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 956 transitions. [2022-11-18 20:18:37,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 191.2) internal successors, (956), 5 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:37,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 238.0) internal successors, (1428), 6 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) [2022-11-18 20:18:37,996 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 238.0) internal successors, (1428), 6 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) [2022-11-18 20:18:37,996 INFO L175 Difference]: Start difference. First operand has 224 places, 219 transitions, 567 flow. Second operand 5 states and 956 transitions. [2022-11-18 20:18:37,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 219 transitions, 611 flow [2022-11-18 20:18:37,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 219 transitions, 606 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:18:38,002 INFO L231 Difference]: Finished difference. Result has 227 places, 219 transitions, 582 flow [2022-11-18 20:18:38,003 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=582, PETRI_PLACES=227, PETRI_TRANSITIONS=219} [2022-11-18 20:18:38,003 INFO L288 CegarLoopForPetriNet]: 212 programPoint places, 15 predicate places. [2022-11-18 20:18:38,004 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 219 transitions, 582 flow [2022-11-18 20:18:38,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 190.75) internal successors, (763), 4 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:38,004 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:18:38,005 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 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] [2022-11-18 20:18:38,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-18 20:18:38,005 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-18 20:18:38,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:38,006 INFO L85 PathProgramCache]: Analyzing trace with hash 145234973, now seen corresponding path program 1 times [2022-11-18 20:18:38,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:38,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074392436] [2022-11-18 20:18:38,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:38,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:38,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:38,078 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:18:38,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:38,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074392436] [2022-11-18 20:18:38,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074392436] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:18:38,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195006228] [2022-11-18 20:18:38,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:38,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:18:38,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15b574ee-9982-4c00-b6e9-2f662c269312/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:18:38,083 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15b574ee-9982-4c00-b6e9-2f662c269312/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:18:38,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15b574ee-9982-4c00-b6e9-2f662c269312/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:18:38,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:38,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:18:38,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:18:38,263 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:18:38,263 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:18:38,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195006228] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:18:38,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:18:38,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 20:18:38,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842787180] [2022-11-18 20:18:38,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:18:38,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:18:38,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:38,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:18:38,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:18:38,266 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 238 [2022-11-18 20:18:38,267 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 219 transitions, 582 flow. Second operand has 6 states, 6 states have (on average 189.66666666666666) internal successors, (1138), 6 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:38,267 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:18:38,267 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 238 [2022-11-18 20:18:38,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:18:38,945 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1056] t_funEXIT-->L711-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem14#1_18| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_t_funThread1of4ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} AuxVars[] AssignedVars[][126], [Black: 217#(= |ULTIMATE.start_main_~i~0#1| 0), 248#(<= 1 |ULTIMATE.start_main_~i~0#1|), 235#true, 99#L711-5true, Black: 227#(= ~global~0 0), Black: 230#(and (= |t_funThread1of4ForFork0_#t~post5| 0) (= ~global~0 0)), Black: 228#(= |t_funThread1of4ForFork0_#t~post5| 0), t_funThread1of4ForFork0NotInUse, t_funThread2of4ForFork0InUse, t_funThread3of4ForFork0NotInUse, t_funThread4of4ForFork0NotInUse, 21#t_funENTRYtrue, Black: 220#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), Black: 218#(= |ULTIMATE.start_main_#t~post8#1| 0)]) [2022-11-18 20:18:38,946 INFO L383 tUnfolder$Statistics]: this new event has 192 ancestors and is cut-off event [2022-11-18 20:18:38,946 INFO L386 tUnfolder$Statistics]: existing Event has 98 ancestors and is cut-off event [2022-11-18 20:18:38,946 INFO L386 tUnfolder$Statistics]: existing Event has 145 ancestors and is cut-off event [2022-11-18 20:18:38,946 INFO L386 tUnfolder$Statistics]: existing Event has 145 ancestors and is cut-off event [2022-11-18 20:18:38,976 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1056] t_funEXIT-->L711-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem14#1_18| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_t_funThread1of4ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} AuxVars[] AssignedVars[][126], [Black: 217#(= |ULTIMATE.start_main_~i~0#1| 0), 248#(<= 1 |ULTIMATE.start_main_~i~0#1|), 235#true, 170#L701-6true, 99#L711-5true, Black: 227#(= ~global~0 0), Black: 230#(and (= |t_funThread1of4ForFork0_#t~post5| 0) (= ~global~0 0)), Black: 228#(= |t_funThread1of4ForFork0_#t~post5| 0), t_funThread1of4ForFork0NotInUse, t_funThread2of4ForFork0InUse, t_funThread3of4ForFork0NotInUse, t_funThread4of4ForFork0NotInUse, Black: 220#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), Black: 218#(= |ULTIMATE.start_main_#t~post8#1| 0)]) [2022-11-18 20:18:38,976 INFO L383 tUnfolder$Statistics]: this new event has 202 ancestors and is cut-off event [2022-11-18 20:18:38,976 INFO L386 tUnfolder$Statistics]: existing Event has 108 ancestors and is cut-off event [2022-11-18 20:18:38,976 INFO L386 tUnfolder$Statistics]: existing Event has 155 ancestors and is cut-off event [2022-11-18 20:18:38,976 INFO L386 tUnfolder$Statistics]: existing Event has 202 ancestors and is cut-off event [2022-11-18 20:18:38,995 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1056] t_funEXIT-->L711-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem14#1_18| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_t_funThread1of4ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} AuxVars[] AssignedVars[][126], [Black: 217#(= |ULTIMATE.start_main_~i~0#1| 0), 248#(<= 1 |ULTIMATE.start_main_~i~0#1|), 235#true, 99#L711-5true, Black: 227#(= ~global~0 0), Black: 230#(and (= |t_funThread1of4ForFork0_#t~post5| 0) (= ~global~0 0)), Black: 228#(= |t_funThread1of4ForFork0_#t~post5| 0), t_funThread1of4ForFork0NotInUse, t_funThread2of4ForFork0NotInUse, t_funThread3of4ForFork0NotInUse, t_funThread4of4ForFork0NotInUse, Black: 220#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), Black: 218#(= |ULTIMATE.start_main_#t~post8#1| 0)]) [2022-11-18 20:18:38,996 INFO L383 tUnfolder$Statistics]: this new event has 227 ancestors and is cut-off event [2022-11-18 20:18:38,996 INFO L386 tUnfolder$Statistics]: existing Event has 86 ancestors and is cut-off event [2022-11-18 20:18:38,996 INFO L386 tUnfolder$Statistics]: existing Event has 133 ancestors and is cut-off event [2022-11-18 20:18:38,996 INFO L386 tUnfolder$Statistics]: existing Event has 133 ancestors and is cut-off event [2022-11-18 20:18:38,998 INFO L130 PetriNetUnfolder]: 168/2692 cut-off events. [2022-11-18 20:18:38,998 INFO L131 PetriNetUnfolder]: For 835/1728 co-relation queries the response was YES. [2022-11-18 20:18:39,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3396 conditions, 2692 events. 168/2692 cut-off events. For 835/1728 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 23061 event pairs, 64 based on Foata normal form. 41/2320 useless extension candidates. Maximal degree in co-relation 2646. Up to 214 conditions per place. [2022-11-18 20:18:39,038 INFO L137 encePairwiseOnDemand]: 233/238 looper letters, 19 selfloop transitions, 6 changer transitions 0/221 dead transitions. [2022-11-18 20:18:39,038 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 221 transitions, 634 flow [2022-11-18 20:18:39,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:18:39,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:18:39,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1335 transitions. [2022-11-18 20:18:39,041 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8013205282112845 [2022-11-18 20:18:39,041 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1335 transitions. [2022-11-18 20:18:39,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1335 transitions. [2022-11-18 20:18:39,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:18:39,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1335 transitions. [2022-11-18 20:18:39,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 190.71428571428572) internal successors, (1335), 7 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:39,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 238.0) internal successors, (1904), 8 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:39,048 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 238.0) internal successors, (1904), 8 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:39,048 INFO L175 Difference]: Start difference. First operand has 227 places, 219 transitions, 582 flow. Second operand 7 states and 1335 transitions. [2022-11-18 20:18:39,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 221 transitions, 634 flow [2022-11-18 20:18:39,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 221 transitions, 622 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:18:39,054 INFO L231 Difference]: Finished difference. Result has 229 places, 218 transitions, 578 flow [2022-11-18 20:18:39,055 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=578, PETRI_PLACES=229, PETRI_TRANSITIONS=218} [2022-11-18 20:18:39,055 INFO L288 CegarLoopForPetriNet]: 212 programPoint places, 17 predicate places. [2022-11-18 20:18:39,055 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 218 transitions, 578 flow [2022-11-18 20:18:39,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 189.66666666666666) internal successors, (1138), 6 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:39,056 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:18:39,057 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] [2022-11-18 20:18:39,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15b574ee-9982-4c00-b6e9-2f662c269312/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:18:39,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15b574ee-9982-4c00-b6e9-2f662c269312/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-18 20:18:39,262 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-18 20:18:39,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:39,262 INFO L85 PathProgramCache]: Analyzing trace with hash -946427902, now seen corresponding path program 1 times [2022-11-18 20:18:39,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:39,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915378436] [2022-11-18 20:18:39,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:39,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:39,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:39,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:18:39,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:39,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915378436] [2022-11-18 20:18:39,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915378436] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:18:39,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:18:39,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:18:39,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029652755] [2022-11-18 20:18:39,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:18:39,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:18:39,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:39,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:18:39,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:18:39,341 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 238 [2022-11-18 20:18:39,342 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 218 transitions, 578 flow. Second operand has 6 states, 6 states have (on average 172.5) internal successors, (1035), 6 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:39,343 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:18:39,343 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 238 [2022-11-18 20:18:39,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand