./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/reorder_5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/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_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/reorder_5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/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_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/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 c2478eeb4380713960dd80551c9d8e99269809d2bcbd284785221597bb31a471 --- 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 19:58:05,341 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:58:05,344 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:58:05,376 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:58:05,379 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:58:05,384 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:58:05,387 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:58:05,392 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:58:05,396 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:58:05,399 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:58:05,401 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:58:05,403 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:58:05,405 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:58:05,412 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:58:05,413 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:58:05,417 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:58:05,417 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:58:05,420 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:58:05,422 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:58:05,424 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:58:05,428 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:58:05,430 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:58:05,431 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:58:05,433 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:58:05,437 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:58:05,441 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:58:05,441 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:58:05,443 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:58:05,444 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:58:05,445 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:58:05,446 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:58:05,447 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:58:05,449 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:58:05,450 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:58:05,451 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:58:05,452 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:58:05,452 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:58:05,453 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:58:05,453 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:58:05,454 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:58:05,455 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:58:05,456 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 19:58:05,493 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:58:05,497 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:58:05,497 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:58:05,498 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:58:05,499 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:58:05,499 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:58:05,500 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:58:05,500 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:58:05,500 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:58:05,501 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:58:05,502 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:58:05,502 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:58:05,502 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:58:05,503 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:58:05,503 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:58:05,503 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:58:05,503 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:58:05,504 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:58:05,504 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 19:58:05,504 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:58:05,504 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:58:05,504 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:58:05,505 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:58:05,505 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:58:05,505 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:58:05,505 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:58:05,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:58:05,508 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:58:05,508 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:58:05,508 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:58:05,509 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:58:05,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:58:05,509 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:58:05,510 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:58:05,510 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:58:05,510 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_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2478eeb4380713960dd80551c9d8e99269809d2bcbd284785221597bb31a471 [2022-11-18 19:58:05,806 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:58:05,839 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:58:05,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:58:05,843 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:58:05,844 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:58:05,848 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/pthread/reorder_5.i [2022-11-18 19:58:05,949 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/data/70c7b9504/7af7dd7f43be4a1993a623a9d9834739/FLAG1a5120327 [2022-11-18 19:58:06,627 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:58:06,627 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/sv-benchmarks/c/pthread/reorder_5.i [2022-11-18 19:58:06,644 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/data/70c7b9504/7af7dd7f43be4a1993a623a9d9834739/FLAG1a5120327 [2022-11-18 19:58:06,823 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/data/70c7b9504/7af7dd7f43be4a1993a623a9d9834739 [2022-11-18 19:58:06,826 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:58:06,827 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:58:06,829 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:58:06,829 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:58:06,833 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:58:06,834 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:58:06" (1/1) ... [2022-11-18 19:58:06,835 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@155a3e7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:58:06, skipping insertion in model container [2022-11-18 19:58:06,835 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:58:06" (1/1) ... [2022-11-18 19:58:06,843 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:58:06,894 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:58:07,721 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_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/sv-benchmarks/c/pthread/reorder_5.i[59329,59342] [2022-11-18 19:58:07,723 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:58:07,734 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:58:07,815 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_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/sv-benchmarks/c/pthread/reorder_5.i[59329,59342] [2022-11-18 19:58:07,821 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:58:07,904 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:58:07,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:58:07 WrapperNode [2022-11-18 19:58:07,905 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:58:07,906 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:58:07,906 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:58:07,907 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:58:07,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:58:07" (1/1) ... [2022-11-18 19:58:07,952 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:58:07" (1/1) ... [2022-11-18 19:58:08,005 INFO L138 Inliner]: procedures = 369, calls = 37, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 144 [2022-11-18 19:58:08,005 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:58:08,006 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:58:08,007 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:58:08,007 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:58:08,017 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:58:07" (1/1) ... [2022-11-18 19:58:08,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:58:07" (1/1) ... [2022-11-18 19:58:08,034 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:58:07" (1/1) ... [2022-11-18 19:58:08,046 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:58:07" (1/1) ... [2022-11-18 19:58:08,053 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:58:07" (1/1) ... [2022-11-18 19:58:08,057 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:58:07" (1/1) ... [2022-11-18 19:58:08,072 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:58:07" (1/1) ... [2022-11-18 19:58:08,074 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:58:07" (1/1) ... [2022-11-18 19:58:08,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:58:08,078 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:58:08,078 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:58:08,078 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:58:08,079 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:58:07" (1/1) ... [2022-11-18 19:58:08,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:58:08,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:58:08,119 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:58:08,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:58:08,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:58:08,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:58:08,170 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 19:58:08,170 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2022-11-18 19:58:08,170 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2022-11-18 19:58:08,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:58:08,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:58:08,171 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2022-11-18 19:58:08,171 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2022-11-18 19:58:08,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:58:08,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:58:08,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:58:08,173 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 19:58:08,338 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:58:08,340 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:58:08,690 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:58:08,700 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:58:08,700 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-18 19:58:08,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:58:08 BoogieIcfgContainer [2022-11-18 19:58:08,703 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:58:08,706 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:58:08,706 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:58:08,710 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:58:08,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:58:06" (1/3) ... [2022-11-18 19:58:08,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17493171 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:58:08, skipping insertion in model container [2022-11-18 19:58:08,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:58:07" (2/3) ... [2022-11-18 19:58:08,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17493171 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:58:08, skipping insertion in model container [2022-11-18 19:58:08,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:58:08" (3/3) ... [2022-11-18 19:58:08,714 INFO L112 eAbstractionObserver]: Analyzing ICFG reorder_5.i [2022-11-18 19:58:08,723 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 19:58:08,735 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:58:08,735 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-18 19:58:08,736 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 19:58:08,827 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-18 19:58:08,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 173 transitions, 368 flow [2022-11-18 19:58:09,043 INFO L130 PetriNetUnfolder]: 35/368 cut-off events. [2022-11-18 19:58:09,043 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-18 19:58:09,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 388 conditions, 368 events. 35/368 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1282 event pairs, 0 based on Foata normal form. 0/309 useless extension candidates. Maximal degree in co-relation 186. Up to 8 conditions per place. [2022-11-18 19:58:09,052 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 173 transitions, 368 flow [2022-11-18 19:58:09,059 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 163 places, 173 transitions, 368 flow [2022-11-18 19:58:09,070 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:58:09,078 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;@31c41cfc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:58:09,078 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-18 19:58:09,151 INFO L130 PetriNetUnfolder]: 7/116 cut-off events. [2022-11-18 19:58:09,152 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:58:09,152 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:09,153 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 19:58:09,154 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-18 19:58:09,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:09,160 INFO L85 PathProgramCache]: Analyzing trace with hash -2000684985, now seen corresponding path program 1 times [2022-11-18 19:58:09,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:09,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515429950] [2022-11-18 19:58:09,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:09,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:09,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:09,678 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 19:58:09,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:09,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515429950] [2022-11-18 19:58:09,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515429950] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:58:09,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:58:09,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:58:09,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75899746] [2022-11-18 19:58:09,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:58:09,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:58:09,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:09,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:58:09,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:58:09,730 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 173 [2022-11-18 19:58:09,734 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 173 transitions, 368 flow. Second operand has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states 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 19:58:09,734 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:58:09,735 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 173 [2022-11-18 19:58:09,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:58:09,972 INFO L130 PetriNetUnfolder]: 10/429 cut-off events. [2022-11-18 19:58:09,973 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-11-18 19:58:09,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 570 conditions, 429 events. 10/429 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1551 event pairs, 0 based on Foata normal form. 72/446 useless extension candidates. Maximal degree in co-relation 239. Up to 66 conditions per place. [2022-11-18 19:58:09,976 INFO L137 encePairwiseOnDemand]: 151/173 looper letters, 44 selfloop transitions, 10 changer transitions 29/183 dead transitions. [2022-11-18 19:58:09,976 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 183 transitions, 516 flow [2022-11-18 19:58:09,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:58:09,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:58:09,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 702 transitions. [2022-11-18 19:58:09,994 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8115606936416185 [2022-11-18 19:58:09,995 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 702 transitions. [2022-11-18 19:58:09,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 702 transitions. [2022-11-18 19:58:09,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:58:10,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 702 transitions. [2022-11-18 19:58:10,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 140.4) internal successors, (702), 5 states have internal predecessors, (702), 0 states have call successors, (0), 0 states 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 19:58:10,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states 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 19:58:10,013 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states 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 19:58:10,015 INFO L175 Difference]: Start difference. First operand has 163 places, 173 transitions, 368 flow. Second operand 5 states and 702 transitions. [2022-11-18 19:58:10,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 183 transitions, 516 flow [2022-11-18 19:58:10,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 183 transitions, 516 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:58:10,025 INFO L231 Difference]: Finished difference. Result has 165 places, 137 transitions, 330 flow [2022-11-18 19:58:10,028 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=330, PETRI_PLACES=165, PETRI_TRANSITIONS=137} [2022-11-18 19:58:10,031 INFO L288 CegarLoopForPetriNet]: 163 programPoint places, 2 predicate places. [2022-11-18 19:58:10,032 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 137 transitions, 330 flow [2022-11-18 19:58:10,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states 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 19:58:10,033 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:10,033 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:10,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:58:10,033 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-18 19:58:10,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:10,034 INFO L85 PathProgramCache]: Analyzing trace with hash -819623622, now seen corresponding path program 1 times [2022-11-18 19:58:10,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:10,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703827184] [2022-11-18 19:58:10,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:10,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:10,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:10,254 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 19:58:10,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:10,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703827184] [2022-11-18 19:58:10,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703827184] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:58:10,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:58:10,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:58:10,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893902804] [2022-11-18 19:58:10,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:58:10,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:58:10,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:10,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:58:10,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:58:10,261 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 173 [2022-11-18 19:58:10,262 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 137 transitions, 330 flow. Second operand has 5 states, 5 states have (on average 118.8) internal successors, (594), 5 states have internal predecessors, (594), 0 states have call successors, (0), 0 states 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 19:58:10,262 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:58:10,262 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 173 [2022-11-18 19:58:10,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:58:10,581 INFO L130 PetriNetUnfolder]: 8/330 cut-off events. [2022-11-18 19:58:10,581 INFO L131 PetriNetUnfolder]: For 51/51 co-relation queries the response was YES. [2022-11-18 19:58:10,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 534 conditions, 330 events. 8/330 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 952 event pairs, 2 based on Foata normal form. 0/294 useless extension candidates. Maximal degree in co-relation 263. Up to 135 conditions per place. [2022-11-18 19:58:10,584 INFO L137 encePairwiseOnDemand]: 166/173 looper letters, 50 selfloop transitions, 6 changer transitions 0/144 dead transitions. [2022-11-18 19:58:10,585 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 144 transitions, 459 flow [2022-11-18 19:58:10,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:58:10,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:58:10,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 629 transitions. [2022-11-18 19:58:10,590 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7271676300578035 [2022-11-18 19:58:10,590 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 629 transitions. [2022-11-18 19:58:10,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 629 transitions. [2022-11-18 19:58:10,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:58:10,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 629 transitions. [2022-11-18 19:58:10,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 125.8) internal successors, (629), 5 states have internal predecessors, (629), 0 states have call successors, (0), 0 states 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 19:58:10,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states 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 19:58:10,599 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states 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 19:58:10,599 INFO L175 Difference]: Start difference. First operand has 165 places, 137 transitions, 330 flow. Second operand 5 states and 629 transitions. [2022-11-18 19:58:10,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 144 transitions, 459 flow [2022-11-18 19:58:10,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 144 transitions, 455 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 19:58:10,608 INFO L231 Difference]: Finished difference. Result has 144 places, 141 transitions, 368 flow [2022-11-18 19:58:10,609 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=368, PETRI_PLACES=144, PETRI_TRANSITIONS=141} [2022-11-18 19:58:10,612 INFO L288 CegarLoopForPetriNet]: 163 programPoint places, -19 predicate places. [2022-11-18 19:58:10,612 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 141 transitions, 368 flow [2022-11-18 19:58:10,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 118.8) internal successors, (594), 5 states have internal predecessors, (594), 0 states have call successors, (0), 0 states 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 19:58:10,613 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:10,614 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:10,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:58:10,615 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-18 19:58:10,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:10,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1038559462, now seen corresponding path program 1 times [2022-11-18 19:58:10,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:10,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251790416] [2022-11-18 19:58:10,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:10,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:10,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:58:10,710 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:58:10,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:58:10,780 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:58:10,780 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 19:58:10,783 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-11-18 19:58:10,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-11-18 19:58:10,791 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-11-18 19:58:10,791 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-11-18 19:58:10,792 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-11-18 19:58:10,793 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-11-18 19:58:10,793 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-11-18 19:58:10,793 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-11-18 19:58:10,794 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-11-18 19:58:10,794 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2022-11-18 19:58:10,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 19:58:10,795 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-18 19:58:10,800 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 19:58:10,800 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-18 19:58:10,864 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-11-18 19:58:10,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 192 transitions, 432 flow [2022-11-18 19:58:11,076 INFO L130 PetriNetUnfolder]: 147/1219 cut-off events. [2022-11-18 19:58:11,077 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-11-18 19:58:11,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1316 conditions, 1219 events. 147/1219 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 6602 event pairs, 2 based on Foata normal form. 0/1009 useless extension candidates. Maximal degree in co-relation 697. Up to 32 conditions per place. [2022-11-18 19:58:11,086 INFO L82 GeneralOperation]: Start removeDead. Operand has 181 places, 192 transitions, 432 flow [2022-11-18 19:58:11,093 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 181 places, 192 transitions, 432 flow [2022-11-18 19:58:11,095 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:58:11,102 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;@31c41cfc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:58:11,102 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-18 19:58:11,113 INFO L130 PetriNetUnfolder]: 7/116 cut-off events. [2022-11-18 19:58:11,114 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:58:11,114 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:11,114 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 19:58:11,114 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-18 19:58:11,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:11,115 INFO L85 PathProgramCache]: Analyzing trace with hash -452436781, now seen corresponding path program 1 times [2022-11-18 19:58:11,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:11,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954734951] [2022-11-18 19:58:11,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:11,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:11,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:11,291 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 19:58:11,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:11,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954734951] [2022-11-18 19:58:11,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954734951] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:58:11,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:58:11,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:58:11,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035138849] [2022-11-18 19:58:11,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:58:11,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:58:11,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:11,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:58:11,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:58:11,295 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 192 [2022-11-18 19:58:11,297 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 192 transitions, 432 flow. Second operand has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states 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 19:58:11,297 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:58:11,297 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 192 [2022-11-18 19:58:11,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:58:11,778 INFO L130 PetriNetUnfolder]: 85/1682 cut-off events. [2022-11-18 19:58:11,778 INFO L131 PetriNetUnfolder]: For 114/114 co-relation queries the response was YES. [2022-11-18 19:58:11,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2302 conditions, 1682 events. 85/1682 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 11712 event pairs, 0 based on Foata normal form. 479/1911 useless extension candidates. Maximal degree in co-relation 1135. Up to 267 conditions per place. [2022-11-18 19:58:11,789 INFO L137 encePairwiseOnDemand]: 169/192 looper letters, 65 selfloop transitions, 10 changer transitions 27/213 dead transitions. [2022-11-18 19:58:11,789 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 213 transitions, 652 flow [2022-11-18 19:58:11,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:58:11,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:58:11,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 780 transitions. [2022-11-18 19:58:11,793 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8125 [2022-11-18 19:58:11,793 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 780 transitions. [2022-11-18 19:58:11,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 780 transitions. [2022-11-18 19:58:11,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:58:11,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 780 transitions. [2022-11-18 19:58:11,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 156.0) internal successors, (780), 5 states have internal predecessors, (780), 0 states have call successors, (0), 0 states 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 19:58:11,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 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 19:58:11,800 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 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 19:58:11,800 INFO L175 Difference]: Start difference. First operand has 181 places, 192 transitions, 432 flow. Second operand 5 states and 780 transitions. [2022-11-18 19:58:11,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 213 transitions, 652 flow [2022-11-18 19:58:11,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 213 transitions, 652 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:58:11,810 INFO L231 Difference]: Finished difference. Result has 187 places, 162 transitions, 434 flow [2022-11-18 19:58:11,811 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=434, PETRI_PLACES=187, PETRI_TRANSITIONS=162} [2022-11-18 19:58:11,814 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 6 predicate places. [2022-11-18 19:58:11,814 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 162 transitions, 434 flow [2022-11-18 19:58:11,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states 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 19:58:11,816 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:11,817 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:11,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 19:58:11,820 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-18 19:58:11,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:11,826 INFO L85 PathProgramCache]: Analyzing trace with hash -606518523, now seen corresponding path program 1 times [2022-11-18 19:58:11,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:11,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53661951] [2022-11-18 19:58:11,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:11,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:11,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:12,036 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 19:58:12,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:12,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53661951] [2022-11-18 19:58:12,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53661951] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:58:12,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:58:12,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:58:12,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129774699] [2022-11-18 19:58:12,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:58:12,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:58:12,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:12,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:58:12,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:58:12,040 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 192 [2022-11-18 19:58:12,043 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 162 transitions, 434 flow. Second operand has 5 states, 5 states have (on average 129.8) internal successors, (649), 5 states have internal predecessors, (649), 0 states have call successors, (0), 0 states 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 19:58:12,044 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:58:12,044 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 192 [2022-11-18 19:58:12,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:58:12,408 INFO L130 PetriNetUnfolder]: 85/1196 cut-off events. [2022-11-18 19:58:12,408 INFO L131 PetriNetUnfolder]: For 326/326 co-relation queries the response was YES. [2022-11-18 19:58:12,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2033 conditions, 1196 events. 85/1196 cut-off events. For 326/326 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 7026 event pairs, 22 based on Foata normal form. 0/1039 useless extension candidates. Maximal degree in co-relation 1031. Up to 521 conditions per place. [2022-11-18 19:58:12,417 INFO L137 encePairwiseOnDemand]: 185/192 looper letters, 61 selfloop transitions, 6 changer transitions 0/169 dead transitions. [2022-11-18 19:58:12,417 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 169 transitions, 586 flow [2022-11-18 19:58:12,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:58:12,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:58:12,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 690 transitions. [2022-11-18 19:58:12,419 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.71875 [2022-11-18 19:58:12,420 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 690 transitions. [2022-11-18 19:58:12,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 690 transitions. [2022-11-18 19:58:12,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:58:12,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 690 transitions. [2022-11-18 19:58:12,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 states 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 19:58:12,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 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 19:58:12,426 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 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 19:58:12,426 INFO L175 Difference]: Start difference. First operand has 187 places, 162 transitions, 434 flow. Second operand 5 states and 690 transitions. [2022-11-18 19:58:12,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 169 transitions, 586 flow [2022-11-18 19:58:12,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 169 transitions, 586 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:58:12,433 INFO L231 Difference]: Finished difference. Result has 168 places, 166 transitions, 477 flow [2022-11-18 19:58:12,434 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=477, PETRI_PLACES=168, PETRI_TRANSITIONS=166} [2022-11-18 19:58:12,436 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, -13 predicate places. [2022-11-18 19:58:12,436 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 166 transitions, 477 flow [2022-11-18 19:58:12,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 129.8) internal successors, (649), 5 states have internal predecessors, (649), 0 states have call successors, (0), 0 states 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 19:58:12,437 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:12,437 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:12,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:58:12,437 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-18 19:58:12,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:12,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1388012799, now seen corresponding path program 1 times [2022-11-18 19:58:12,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:12,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353989224] [2022-11-18 19:58:12,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:12,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:12,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:12,573 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 19:58:12,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:12,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353989224] [2022-11-18 19:58:12,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353989224] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:58:12,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:58:12,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:58:12,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958289370] [2022-11-18 19:58:12,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:58:12,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:58:12,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:12,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:58:12,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:58:12,580 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 192 [2022-11-18 19:58:12,582 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 166 transitions, 477 flow. Second operand has 4 states, 4 states have (on average 138.5) internal successors, (554), 4 states have internal predecessors, (554), 0 states have call successors, (0), 0 states 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 19:58:12,582 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:58:12,583 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 192 [2022-11-18 19:58:12,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:58:12,956 INFO L130 PetriNetUnfolder]: 85/1190 cut-off events. [2022-11-18 19:58:12,956 INFO L131 PetriNetUnfolder]: For 341/341 co-relation queries the response was YES. [2022-11-18 19:58:12,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1993 conditions, 1190 events. 85/1190 cut-off events. For 341/341 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 6983 event pairs, 0 based on Foata normal form. 0/1042 useless extension candidates. Maximal degree in co-relation 1659. Up to 262 conditions per place. [2022-11-18 19:58:12,965 INFO L137 encePairwiseOnDemand]: 180/192 looper letters, 66 selfloop transitions, 11 changer transitions 0/191 dead transitions. [2022-11-18 19:58:12,965 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 191 transitions, 709 flow [2022-11-18 19:58:12,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:58:12,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:58:12,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 757 transitions. [2022-11-18 19:58:12,968 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7885416666666667 [2022-11-18 19:58:12,969 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 757 transitions. [2022-11-18 19:58:12,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 757 transitions. [2022-11-18 19:58:12,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:58:12,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 757 transitions. [2022-11-18 19:58:12,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 151.4) internal successors, (757), 5 states have internal predecessors, (757), 0 states have call successors, (0), 0 states 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 19:58:12,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 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 19:58:12,974 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 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 19:58:12,974 INFO L175 Difference]: Start difference. First operand has 168 places, 166 transitions, 477 flow. Second operand 5 states and 757 transitions. [2022-11-18 19:58:12,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 191 transitions, 709 flow [2022-11-18 19:58:12,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 191 transitions, 706 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:58:12,982 INFO L231 Difference]: Finished difference. Result has 174 places, 168 transitions, 521 flow [2022-11-18 19:58:12,982 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=521, PETRI_PLACES=174, PETRI_TRANSITIONS=168} [2022-11-18 19:58:12,987 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, -7 predicate places. [2022-11-18 19:58:12,987 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 168 transitions, 521 flow [2022-11-18 19:58:12,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 138.5) internal successors, (554), 4 states have internal predecessors, (554), 0 states have call successors, (0), 0 states 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 19:58:12,988 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:12,988 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:12,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 19:58:12,988 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-18 19:58:12,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:12,989 INFO L85 PathProgramCache]: Analyzing trace with hash -500001019, now seen corresponding path program 1 times [2022-11-18 19:58:12,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:12,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294755982] [2022-11-18 19:58:12,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:12,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:13,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:13,180 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:13,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:13,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294755982] [2022-11-18 19:58:13,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294755982] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:58:13,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137775495] [2022-11-18 19:58:13,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:13,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:58:13,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:58:13,187 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:58:13,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:58:13,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:13,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:58:13,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:58:13,440 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:13,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:58:13,539 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:13,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137775495] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:58:13,539 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:58:13,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 19:58:13,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964318736] [2022-11-18 19:58:13,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:58:13,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:58:13,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:13,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:58:13,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:58:13,544 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 192 [2022-11-18 19:58:13,546 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 168 transitions, 521 flow. Second operand has 12 states, 12 states have (on average 139.16666666666666) internal successors, (1670), 12 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states 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 19:58:13,546 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:58:13,546 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 192 [2022-11-18 19:58:13,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:58:13,965 INFO L130 PetriNetUnfolder]: 85/1189 cut-off events. [2022-11-18 19:58:13,966 INFO L131 PetriNetUnfolder]: For 649/649 co-relation queries the response was YES. [2022-11-18 19:58:13,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2090 conditions, 1189 events. 85/1189 cut-off events. For 649/649 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 6973 event pairs, 0 based on Foata normal form. 1/1048 useless extension candidates. Maximal degree in co-relation 1743. Up to 237 conditions per place. [2022-11-18 19:58:13,975 INFO L137 encePairwiseOnDemand]: 180/192 looper letters, 64 selfloop transitions, 16 changer transitions 0/194 dead transitions. [2022-11-18 19:58:13,976 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 194 transitions, 770 flow [2022-11-18 19:58:13,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:58:13,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 19:58:13,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1439 transitions. [2022-11-18 19:58:13,980 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7494791666666667 [2022-11-18 19:58:13,981 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1439 transitions. [2022-11-18 19:58:13,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1439 transitions. [2022-11-18 19:58:13,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:58:13,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1439 transitions. [2022-11-18 19:58:13,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 143.9) internal successors, (1439), 10 states have internal predecessors, (1439), 0 states have call successors, (0), 0 states 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 19:58:13,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 192.0) internal successors, (2112), 11 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states 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 19:58:13,990 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 192.0) internal successors, (2112), 11 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states 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 19:58:13,990 INFO L175 Difference]: Start difference. First operand has 174 places, 168 transitions, 521 flow. Second operand 10 states and 1439 transitions. [2022-11-18 19:58:13,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 194 transitions, 770 flow [2022-11-18 19:58:13,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 194 transitions, 770 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:58:13,997 INFO L231 Difference]: Finished difference. Result has 182 places, 168 transitions, 558 flow [2022-11-18 19:58:13,997 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=517, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=558, PETRI_PLACES=182, PETRI_TRANSITIONS=168} [2022-11-18 19:58:13,999 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 1 predicate places. [2022-11-18 19:58:13,999 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 168 transitions, 558 flow [2022-11-18 19:58:14,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 139.16666666666666) internal successors, (1670), 12 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states 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 19:58:14,000 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:14,000 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:14,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:58:14,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:58:14,208 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-18 19:58:14,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:14,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1679838195, now seen corresponding path program 1 times [2022-11-18 19:58:14,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:14,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675259110] [2022-11-18 19:58:14,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:14,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:14,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:14,330 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:14,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:14,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675259110] [2022-11-18 19:58:14,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675259110] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:58:14,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622632176] [2022-11-18 19:58:14,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:14,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:58:14,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:58:14,332 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:58:14,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:58:14,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:14,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:58:14,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:58:14,510 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:14,511 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:58:14,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622632176] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:58:14,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:58:14,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 19:58:14,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599898954] [2022-11-18 19:58:14,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:58:14,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:58:14,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:14,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:58:14,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:58:14,514 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 192 [2022-11-18 19:58:14,515 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 168 transitions, 558 flow. Second operand has 6 states, 6 states have (on average 138.83333333333334) internal successors, (833), 6 states have internal predecessors, (833), 0 states have call successors, (0), 0 states 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 19:58:14,515 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:58:14,515 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 192 [2022-11-18 19:58:14,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:58:14,909 INFO L130 PetriNetUnfolder]: 85/1188 cut-off events. [2022-11-18 19:58:14,909 INFO L131 PetriNetUnfolder]: For 918/918 co-relation queries the response was YES. [2022-11-18 19:58:14,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2151 conditions, 1188 events. 85/1188 cut-off events. For 918/918 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 6944 event pairs, 0 based on Foata normal form. 1/1047 useless extension candidates. Maximal degree in co-relation 1795. Up to 237 conditions per place. [2022-11-18 19:58:14,918 INFO L137 encePairwiseOnDemand]: 181/192 looper letters, 62 selfloop transitions, 14 changer transitions 0/190 dead transitions. [2022-11-18 19:58:14,918 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 190 transitions, 778 flow [2022-11-18 19:58:14,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:58:14,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:58:14,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1026 transitions. [2022-11-18 19:58:14,921 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7633928571428571 [2022-11-18 19:58:14,921 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1026 transitions. [2022-11-18 19:58:14,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1026 transitions. [2022-11-18 19:58:14,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:58:14,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1026 transitions. [2022-11-18 19:58:14,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 146.57142857142858) internal successors, (1026), 7 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states 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 19:58:14,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 192.0) internal successors, (1536), 8 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states 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 19:58:14,927 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 192.0) internal successors, (1536), 8 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states 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 19:58:14,927 INFO L175 Difference]: Start difference. First operand has 182 places, 168 transitions, 558 flow. Second operand 7 states and 1026 transitions. [2022-11-18 19:58:14,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 190 transitions, 778 flow [2022-11-18 19:58:14,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 190 transitions, 740 flow, removed 3 selfloop flow, removed 7 redundant places. [2022-11-18 19:58:14,934 INFO L231 Difference]: Finished difference. Result has 179 places, 167 transitions, 542 flow [2022-11-18 19:58:14,934 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=542, PETRI_PLACES=179, PETRI_TRANSITIONS=167} [2022-11-18 19:58:14,935 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, -2 predicate places. [2022-11-18 19:58:14,935 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 167 transitions, 542 flow [2022-11-18 19:58:14,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 138.83333333333334) internal successors, (833), 6 states have internal predecessors, (833), 0 states have call successors, (0), 0 states 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 19:58:14,936 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:14,936 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:14,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 19:58:15,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:58:15,142 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-18 19:58:15,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:15,143 INFO L85 PathProgramCache]: Analyzing trace with hash 560838438, now seen corresponding path program 1 times [2022-11-18 19:58:15,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:15,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043024399] [2022-11-18 19:58:15,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:15,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:15,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:58:15,167 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:58:15,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:58:15,192 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:58:15,192 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 19:58:15,193 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-11-18 19:58:15,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-11-18 19:58:15,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-11-18 19:58:15,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-11-18 19:58:15,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-11-18 19:58:15,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-11-18 19:58:15,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-11-18 19:58:15,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-11-18 19:58:15,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-11-18 19:58:15,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2022-11-18 19:58:15,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 19:58:15,195 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-18 19:58:15,195 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 19:58:15,195 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-18 19:58:15,225 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2022-11-18 19:58:15,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 199 places, 211 transitions, 500 flow [2022-11-18 19:58:15,838 INFO L130 PetriNetUnfolder]: 639/4240 cut-off events. [2022-11-18 19:58:15,838 INFO L131 PetriNetUnfolder]: For 419/419 co-relation queries the response was YES. [2022-11-18 19:58:15,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4691 conditions, 4240 events. 639/4240 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 31801 event pairs, 64 based on Foata normal form. 0/3507 useless extension candidates. Maximal degree in co-relation 2436. Up to 192 conditions per place. [2022-11-18 19:58:15,870 INFO L82 GeneralOperation]: Start removeDead. Operand has 199 places, 211 transitions, 500 flow [2022-11-18 19:58:15,889 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 199 places, 211 transitions, 500 flow [2022-11-18 19:58:15,891 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:58:15,891 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;@31c41cfc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:58:15,891 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-18 19:58:15,900 INFO L130 PetriNetUnfolder]: 7/116 cut-off events. [2022-11-18 19:58:15,900 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:58:15,900 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:15,900 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 19:58:15,900 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-18 19:58:15,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:15,901 INFO L85 PathProgramCache]: Analyzing trace with hash -2139352558, now seen corresponding path program 1 times [2022-11-18 19:58:15,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:15,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700059660] [2022-11-18 19:58:15,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:15,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:15,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:15,977 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 19:58:15,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:15,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700059660] [2022-11-18 19:58:15,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700059660] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:58:15,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:58:15,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:58:15,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092883663] [2022-11-18 19:58:15,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:58:15,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:58:15,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:15,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:58:15,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:58:15,980 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 211 [2022-11-18 19:58:15,980 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 211 transitions, 500 flow. Second operand has 4 states, 4 states have (on average 149.0) internal successors, (596), 4 states have internal predecessors, (596), 0 states have call successors, (0), 0 states 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 19:58:15,981 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:58:15,981 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 211 [2022-11-18 19:58:15,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:58:17,269 INFO L130 PetriNetUnfolder]: 502/6219 cut-off events. [2022-11-18 19:58:17,270 INFO L131 PetriNetUnfolder]: For 647/647 co-relation queries the response was YES. [2022-11-18 19:58:17,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8781 conditions, 6219 events. 502/6219 cut-off events. For 647/647 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 59457 event pairs, 8 based on Foata normal form. 2442/7730 useless extension candidates. Maximal degree in co-relation 4453. Up to 1173 conditions per place. [2022-11-18 19:58:17,322 INFO L137 encePairwiseOnDemand]: 187/211 looper letters, 75 selfloop transitions, 10 changer transitions 27/234 dead transitions. [2022-11-18 19:58:17,322 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 234 transitions, 756 flow [2022-11-18 19:58:17,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:58:17,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:58:17,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 847 transitions. [2022-11-18 19:58:17,325 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8028436018957346 [2022-11-18 19:58:17,325 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 847 transitions. [2022-11-18 19:58:17,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 847 transitions. [2022-11-18 19:58:17,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:58:17,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 847 transitions. [2022-11-18 19:58:17,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 169.4) internal successors, (847), 5 states have internal predecessors, (847), 0 states have call successors, (0), 0 states 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 19:58:17,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states 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 19:58:17,333 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states 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 19:58:17,333 INFO L175 Difference]: Start difference. First operand has 199 places, 211 transitions, 500 flow. Second operand 5 states and 847 transitions. [2022-11-18 19:58:17,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 234 transitions, 756 flow [2022-11-18 19:58:17,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 234 transitions, 756 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:58:17,344 INFO L231 Difference]: Finished difference. Result has 204 places, 179 transitions, 498 flow [2022-11-18 19:58:17,344 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=498, PETRI_PLACES=204, PETRI_TRANSITIONS=179} [2022-11-18 19:58:17,346 INFO L288 CegarLoopForPetriNet]: 199 programPoint places, 5 predicate places. [2022-11-18 19:58:17,346 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 179 transitions, 498 flow [2022-11-18 19:58:17,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 149.0) internal successors, (596), 4 states have internal predecessors, (596), 0 states have call successors, (0), 0 states 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 19:58:17,347 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:17,349 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:17,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 19:58:17,350 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-18 19:58:17,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:17,351 INFO L85 PathProgramCache]: Analyzing trace with hash 192129219, now seen corresponding path program 1 times [2022-11-18 19:58:17,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:17,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235946538] [2022-11-18 19:58:17,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:17,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:17,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:17,447 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 19:58:17,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:17,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235946538] [2022-11-18 19:58:17,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235946538] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:58:17,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:58:17,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:58:17,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246014839] [2022-11-18 19:58:17,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:58:17,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:58:17,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:17,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:58:17,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:58:17,451 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 211 [2022-11-18 19:58:17,451 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 179 transitions, 498 flow. Second operand has 5 states, 5 states have (on average 140.8) internal successors, (704), 5 states have internal predecessors, (704), 0 states have call successors, (0), 0 states 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 19:58:17,452 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:58:17,452 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 211 [2022-11-18 19:58:17,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:58:18,396 INFO L130 PetriNetUnfolder]: 502/4250 cut-off events. [2022-11-18 19:58:18,396 INFO L131 PetriNetUnfolder]: For 1351/1351 co-relation queries the response was YES. [2022-11-18 19:58:18,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7457 conditions, 4250 events. 502/4250 cut-off events. For 1351/1351 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 35291 event pairs, 122 based on Foata normal form. 0/3682 useless extension candidates. Maximal degree in co-relation 3828. Up to 1983 conditions per place. [2022-11-18 19:58:18,424 INFO L137 encePairwiseOnDemand]: 204/211 looper letters, 67 selfloop transitions, 6 changer transitions 0/186 dead transitions. [2022-11-18 19:58:18,424 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 186 transitions, 662 flow [2022-11-18 19:58:18,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:58:18,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:58:18,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 751 transitions. [2022-11-18 19:58:18,427 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7118483412322275 [2022-11-18 19:58:18,427 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 751 transitions. [2022-11-18 19:58:18,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 751 transitions. [2022-11-18 19:58:18,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:58:18,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 751 transitions. [2022-11-18 19:58:18,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 150.2) internal successors, (751), 5 states have internal predecessors, (751), 0 states have call successors, (0), 0 states 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 19:58:18,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states 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 19:58:18,433 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states 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 19:58:18,433 INFO L175 Difference]: Start difference. First operand has 204 places, 179 transitions, 498 flow. Second operand 5 states and 751 transitions. [2022-11-18 19:58:18,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 186 transitions, 662 flow [2022-11-18 19:58:18,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 186 transitions, 662 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:58:18,439 INFO L231 Difference]: Finished difference. Result has 185 places, 183 transitions, 541 flow [2022-11-18 19:58:18,439 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=541, PETRI_PLACES=185, PETRI_TRANSITIONS=183} [2022-11-18 19:58:18,440 INFO L288 CegarLoopForPetriNet]: 199 programPoint places, -14 predicate places. [2022-11-18 19:58:18,440 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 183 transitions, 541 flow [2022-11-18 19:58:18,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 140.8) internal successors, (704), 5 states have internal predecessors, (704), 0 states have call successors, (0), 0 states 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 19:58:18,441 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:18,441 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:18,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 19:58:18,441 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-18 19:58:18,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:18,442 INFO L85 PathProgramCache]: Analyzing trace with hash 161548588, now seen corresponding path program 1 times [2022-11-18 19:58:18,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:18,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116870886] [2022-11-18 19:58:18,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:18,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:18,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:18,508 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 19:58:18,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:18,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116870886] [2022-11-18 19:58:18,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116870886] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:58:18,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:58:18,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:58:18,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423976782] [2022-11-18 19:58:18,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:58:18,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:58:18,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:18,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:58:18,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:58:18,512 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 211 [2022-11-18 19:58:18,512 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 183 transitions, 541 flow. Second operand has 4 states, 4 states have (on average 149.5) internal successors, (598), 4 states have internal predecessors, (598), 0 states have call successors, (0), 0 states 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 19:58:18,513 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:58:18,513 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 211 [2022-11-18 19:58:18,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:58:19,506 INFO L130 PetriNetUnfolder]: 502/4242 cut-off events. [2022-11-18 19:58:19,506 INFO L131 PetriNetUnfolder]: For 1363/1363 co-relation queries the response was YES. [2022-11-18 19:58:19,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7286 conditions, 4242 events. 502/4242 cut-off events. For 1363/1363 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 35217 event pairs, 8 based on Foata normal form. 0/3686 useless extension candidates. Maximal degree in co-relation 6652. Up to 1140 conditions per place. [2022-11-18 19:58:19,542 INFO L137 encePairwiseOnDemand]: 199/211 looper letters, 76 selfloop transitions, 11 changer transitions 0/212 dead transitions. [2022-11-18 19:58:19,542 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 212 transitions, 813 flow [2022-11-18 19:58:19,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:58:19,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:58:19,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 822 transitions. [2022-11-18 19:58:19,553 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7791469194312797 [2022-11-18 19:58:19,553 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 822 transitions. [2022-11-18 19:58:19,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 822 transitions. [2022-11-18 19:58:19,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:58:19,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 822 transitions. [2022-11-18 19:58:19,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 164.4) internal successors, (822), 5 states have internal predecessors, (822), 0 states have call successors, (0), 0 states 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 19:58:19,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states 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 19:58:19,567 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states 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 19:58:19,567 INFO L175 Difference]: Start difference. First operand has 185 places, 183 transitions, 541 flow. Second operand 5 states and 822 transitions. [2022-11-18 19:58:19,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 212 transitions, 813 flow [2022-11-18 19:58:19,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 212 transitions, 810 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:58:19,577 INFO L231 Difference]: Finished difference. Result has 191 places, 185 transitions, 585 flow [2022-11-18 19:58:19,578 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=585, PETRI_PLACES=191, PETRI_TRANSITIONS=185} [2022-11-18 19:58:19,581 INFO L288 CegarLoopForPetriNet]: 199 programPoint places, -8 predicate places. [2022-11-18 19:58:19,582 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 185 transitions, 585 flow [2022-11-18 19:58:19,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 149.5) internal successors, (598), 4 states have internal predecessors, (598), 0 states have call successors, (0), 0 states 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 19:58:19,583 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:19,583 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:19,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 19:58:19,584 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-18 19:58:19,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:19,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1965628626, now seen corresponding path program 1 times [2022-11-18 19:58:19,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:19,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310305686] [2022-11-18 19:58:19,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:19,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:19,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:19,720 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:19,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:19,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310305686] [2022-11-18 19:58:19,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310305686] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:58:19,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282265104] [2022-11-18 19:58:19,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:19,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:58:19,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:58:19,723 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:58:19,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 19:58:19,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:19,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:58:19,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:58:19,946 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:19,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:58:20,030 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:20,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282265104] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:58:20,031 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:58:20,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 19:58:20,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022657834] [2022-11-18 19:58:20,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:58:20,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:58:20,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:20,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:58:20,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:58:20,039 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 211 [2022-11-18 19:58:20,043 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 185 transitions, 585 flow. Second operand has 12 states, 12 states have (on average 150.16666666666666) internal successors, (1802), 12 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states 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 19:58:20,043 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:58:20,043 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 211 [2022-11-18 19:58:20,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:58:21,086 INFO L130 PetriNetUnfolder]: 502/4240 cut-off events. [2022-11-18 19:58:21,086 INFO L131 PetriNetUnfolder]: For 2296/2296 co-relation queries the response was YES. [2022-11-18 19:58:21,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7584 conditions, 4240 events. 502/4240 cut-off events. For 2296/2296 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 35236 event pairs, 8 based on Foata normal form. 2/3702 useless extension candidates. Maximal degree in co-relation 6924. Up to 1084 conditions per place. [2022-11-18 19:58:21,121 INFO L137 encePairwiseOnDemand]: 199/211 looper letters, 79 selfloop transitions, 21 changer transitions 0/225 dead transitions. [2022-11-18 19:58:21,121 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 225 transitions, 933 flow [2022-11-18 19:58:21,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:58:21,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-18 19:58:21,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2158 transitions. [2022-11-18 19:58:21,128 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7305348679756263 [2022-11-18 19:58:21,128 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2158 transitions. [2022-11-18 19:58:21,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2158 transitions. [2022-11-18 19:58:21,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:58:21,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2158 transitions. [2022-11-18 19:58:21,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 154.14285714285714) internal successors, (2158), 14 states have internal predecessors, (2158), 0 states have call successors, (0), 0 states 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 19:58:21,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 211.0) internal successors, (3165), 15 states have internal predecessors, (3165), 0 states have call successors, (0), 0 states 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 19:58:21,144 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 211.0) internal successors, (3165), 15 states have internal predecessors, (3165), 0 states have call successors, (0), 0 states 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 19:58:21,145 INFO L175 Difference]: Start difference. First operand has 191 places, 185 transitions, 585 flow. Second operand 14 states and 2158 transitions. [2022-11-18 19:58:21,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 225 transitions, 933 flow [2022-11-18 19:58:21,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 225 transitions, 933 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:58:21,153 INFO L231 Difference]: Finished difference. Result has 203 places, 190 transitions, 657 flow [2022-11-18 19:58:21,154 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=581, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=657, PETRI_PLACES=203, PETRI_TRANSITIONS=190} [2022-11-18 19:58:21,154 INFO L288 CegarLoopForPetriNet]: 199 programPoint places, 4 predicate places. [2022-11-18 19:58:21,154 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 190 transitions, 657 flow [2022-11-18 19:58:21,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 150.16666666666666) internal successors, (1802), 12 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states 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 19:58:21,155 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:21,156 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:21,162 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-18 19:58:21,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:58:21,361 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-18 19:58:21,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:21,362 INFO L85 PathProgramCache]: Analyzing trace with hash 804946071, now seen corresponding path program 1 times [2022-11-18 19:58:21,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:21,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492894757] [2022-11-18 19:58:21,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:21,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:21,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:21,486 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:21,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:21,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492894757] [2022-11-18 19:58:21,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492894757] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:58:21,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072639755] [2022-11-18 19:58:21,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:21,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:58:21,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:58:21,489 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:58:21,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 19:58:21,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:21,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:58:21,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:58:21,721 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:21,721 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:58:21,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072639755] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:58:21,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:58:21,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 19:58:21,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91237804] [2022-11-18 19:58:21,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:58:21,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:58:21,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:21,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:58:21,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:58:21,725 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 211 [2022-11-18 19:58:21,726 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 190 transitions, 657 flow. Second operand has 6 states, 6 states have (on average 149.83333333333334) internal successors, (899), 6 states have internal predecessors, (899), 0 states have call successors, (0), 0 states 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 19:58:21,726 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:58:21,727 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 211 [2022-11-18 19:58:21,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:58:22,699 INFO L130 PetriNetUnfolder]: 502/4238 cut-off events. [2022-11-18 19:58:22,699 INFO L131 PetriNetUnfolder]: For 3141/3141 co-relation queries the response was YES. [2022-11-18 19:58:22,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7774 conditions, 4238 events. 502/4238 cut-off events. For 3141/3141 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 35190 event pairs, 8 based on Foata normal form. 2/3700 useless extension candidates. Maximal degree in co-relation 7096. Up to 1084 conditions per place. [2022-11-18 19:58:22,737 INFO L137 encePairwiseOnDemand]: 200/211 looper letters, 73 selfloop transitions, 17 changer transitions 0/215 dead transitions. [2022-11-18 19:58:22,737 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 215 transitions, 919 flow [2022-11-18 19:58:22,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:58:22,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:58:22,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1113 transitions. [2022-11-18 19:58:22,741 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7535545023696683 [2022-11-18 19:58:22,741 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1113 transitions. [2022-11-18 19:58:22,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1113 transitions. [2022-11-18 19:58:22,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:58:22,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1113 transitions. [2022-11-18 19:58:22,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 159.0) internal successors, (1113), 7 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states 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 19:58:22,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 211.0) internal successors, (1688), 8 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states 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 19:58:22,749 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 211.0) internal successors, (1688), 8 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states 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 19:58:22,749 INFO L175 Difference]: Start difference. First operand has 203 places, 190 transitions, 657 flow. Second operand 7 states and 1113 transitions. [2022-11-18 19:58:22,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 215 transitions, 919 flow [2022-11-18 19:58:22,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 215 transitions, 871 flow, removed 6 selfloop flow, removed 7 redundant places. [2022-11-18 19:58:22,758 INFO L231 Difference]: Finished difference. Result has 199 places, 188 transitions, 631 flow [2022-11-18 19:58:22,759 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=631, PETRI_PLACES=199, PETRI_TRANSITIONS=188} [2022-11-18 19:58:22,759 INFO L288 CegarLoopForPetriNet]: 199 programPoint places, 0 predicate places. [2022-11-18 19:58:22,760 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 188 transitions, 631 flow [2022-11-18 19:58:22,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 149.83333333333334) internal successors, (899), 6 states have internal predecessors, (899), 0 states have call successors, (0), 0 states 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 19:58:22,760 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:22,760 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:22,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 19:58:22,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:58:22,966 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-18 19:58:22,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:22,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1804786106, now seen corresponding path program 1 times [2022-11-18 19:58:22,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:22,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677605276] [2022-11-18 19:58:22,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:22,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:22,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:23,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:58:23,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:23,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677605276] [2022-11-18 19:58:23,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677605276] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:58:23,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:58:23,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:58:23,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033364686] [2022-11-18 19:58:23,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:58:23,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:58:23,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:23,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:58:23,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:58:23,073 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 211 [2022-11-18 19:58:23,083 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 188 transitions, 631 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 19:58:23,091 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:58:23,091 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 211 [2022-11-18 19:58:23,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:58:23,847 INFO L130 PetriNetUnfolder]: 502/4193 cut-off events. [2022-11-18 19:58:23,847 INFO L131 PetriNetUnfolder]: For 2923/2923 co-relation queries the response was YES. [2022-11-18 19:58:23,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8113 conditions, 4193 events. 502/4193 cut-off events. For 2923/2923 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 34716 event pairs, 8 based on Foata normal form. 0/3731 useless extension candidates. Maximal degree in co-relation 7429. Up to 1385 conditions per place. [2022-11-18 19:58:23,879 INFO L137 encePairwiseOnDemand]: 199/211 looper letters, 78 selfloop transitions, 13 changer transitions 0/216 dead transitions. [2022-11-18 19:58:23,880 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 216 transitions, 909 flow [2022-11-18 19:58:23,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:58:23,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:58:23,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 822 transitions. [2022-11-18 19:58:23,949 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7791469194312797 [2022-11-18 19:58:23,949 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 822 transitions. [2022-11-18 19:58:23,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 822 transitions. [2022-11-18 19:58:23,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:58:23,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 822 transitions. [2022-11-18 19:58:23,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 164.4) internal successors, (822), 5 states have internal predecessors, (822), 0 states have call successors, (0), 0 states 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 19:58:23,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states 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 19:58:23,956 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states 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 19:58:23,956 INFO L175 Difference]: Start difference. First operand has 199 places, 188 transitions, 631 flow. Second operand 5 states and 822 transitions. [2022-11-18 19:58:23,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 216 transitions, 909 flow [2022-11-18 19:58:23,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 216 transitions, 875 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-18 19:58:23,967 INFO L231 Difference]: Finished difference. Result has 200 places, 190 transitions, 650 flow [2022-11-18 19:58:23,967 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=650, PETRI_PLACES=200, PETRI_TRANSITIONS=190} [2022-11-18 19:58:23,968 INFO L288 CegarLoopForPetriNet]: 199 programPoint places, 1 predicate places. [2022-11-18 19:58:23,968 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 190 transitions, 650 flow [2022-11-18 19:58:23,968 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 19:58:23,969 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:23,969 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:23,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 19:58:23,969 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-18 19:58:23,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:23,970 INFO L85 PathProgramCache]: Analyzing trace with hash -918946198, now seen corresponding path program 1 times [2022-11-18 19:58:23,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:23,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109701658] [2022-11-18 19:58:23,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:23,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:23,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:24,091 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:24,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:24,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109701658] [2022-11-18 19:58:24,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109701658] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:58:24,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356690323] [2022-11-18 19:58:24,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:24,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:58:24,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:58:24,093 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:58:24,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 19:58:24,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:24,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:58:24,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:58:24,292 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:24,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:58:24,371 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:24,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356690323] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:58:24,372 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:58:24,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 19:58:24,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688084967] [2022-11-18 19:58:24,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:58:24,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:58:24,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:24,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:58:24,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:58:24,379 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 211 [2022-11-18 19:58:24,381 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 190 transitions, 650 flow. Second operand has 12 states, 12 states have (on average 150.33333333333334) internal successors, (1804), 12 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states 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 19:58:24,381 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:58:24,382 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 211 [2022-11-18 19:58:24,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:58:25,571 INFO L130 PetriNetUnfolder]: 502/4185 cut-off events. [2022-11-18 19:58:25,571 INFO L131 PetriNetUnfolder]: For 3954/3954 co-relation queries the response was YES. [2022-11-18 19:58:25,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8227 conditions, 4185 events. 502/4185 cut-off events. For 3954/3954 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 34600 event pairs, 8 based on Foata normal form. 8/3845 useless extension candidates. Maximal degree in co-relation 7523. Up to 1036 conditions per place. [2022-11-18 19:58:25,605 INFO L137 encePairwiseOnDemand]: 199/211 looper letters, 81 selfloop transitions, 23 changer transitions 0/229 dead transitions. [2022-11-18 19:58:25,606 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 229 transitions, 1002 flow [2022-11-18 19:58:25,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:58:25,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-18 19:58:25,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2158 transitions. [2022-11-18 19:58:25,613 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7305348679756263 [2022-11-18 19:58:25,614 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2158 transitions. [2022-11-18 19:58:25,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2158 transitions. [2022-11-18 19:58:25,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:58:25,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2158 transitions. [2022-11-18 19:58:25,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 154.14285714285714) internal successors, (2158), 14 states have internal predecessors, (2158), 0 states have call successors, (0), 0 states 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 19:58:25,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 211.0) internal successors, (3165), 15 states have internal predecessors, (3165), 0 states have call successors, (0), 0 states 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 19:58:25,630 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 211.0) internal successors, (3165), 15 states have internal predecessors, (3165), 0 states have call successors, (0), 0 states 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 19:58:25,630 INFO L175 Difference]: Start difference. First operand has 200 places, 190 transitions, 650 flow. Second operand 14 states and 2158 transitions. [2022-11-18 19:58:25,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 229 transitions, 1002 flow [2022-11-18 19:58:25,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 229 transitions, 1002 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:58:25,644 INFO L231 Difference]: Finished difference. Result has 212 places, 195 transitions, 732 flow [2022-11-18 19:58:25,645 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=646, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=732, PETRI_PLACES=212, PETRI_TRANSITIONS=195} [2022-11-18 19:58:25,645 INFO L288 CegarLoopForPetriNet]: 199 programPoint places, 13 predicate places. [2022-11-18 19:58:25,646 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 195 transitions, 732 flow [2022-11-18 19:58:25,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 150.33333333333334) internal successors, (1804), 12 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states 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 19:58:25,647 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:25,647 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:25,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 19:58:25,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 19:58:25,853 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-18 19:58:25,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:25,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1577439643, now seen corresponding path program 1 times [2022-11-18 19:58:25,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:25,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068311551] [2022-11-18 19:58:25,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:25,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:25,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:26,006 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:26,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:26,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068311551] [2022-11-18 19:58:26,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068311551] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:58:26,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587872190] [2022-11-18 19:58:26,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:26,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:58:26,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:58:26,009 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:58:26,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 19:58:26,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:26,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:58:26,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:58:26,197 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:26,198 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:58:26,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587872190] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:58:26,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:58:26,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 19:58:26,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774203066] [2022-11-18 19:58:26,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:58:26,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:58:26,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:26,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:58:26,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:58:26,201 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 211 [2022-11-18 19:58:26,203 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 195 transitions, 732 flow. Second operand has 6 states, 6 states have (on average 150.16666666666666) internal successors, (901), 6 states have internal predecessors, (901), 0 states have call successors, (0), 0 states 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 19:58:26,203 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:58:26,203 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 211 [2022-11-18 19:58:26,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:58:27,190 INFO L130 PetriNetUnfolder]: 502/4177 cut-off events. [2022-11-18 19:58:27,191 INFO L131 PetriNetUnfolder]: For 5134/5134 co-relation queries the response was YES. [2022-11-18 19:58:27,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8423 conditions, 4177 events. 502/4177 cut-off events. For 5134/5134 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 34501 event pairs, 8 based on Foata normal form. 8/3837 useless extension candidates. Maximal degree in co-relation 7699. Up to 1036 conditions per place. [2022-11-18 19:58:27,219 INFO L137 encePairwiseOnDemand]: 200/211 looper letters, 75 selfloop transitions, 19 changer transitions 0/219 dead transitions. [2022-11-18 19:58:27,220 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 219 transitions, 1000 flow [2022-11-18 19:58:27,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:58:27,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:58:27,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1113 transitions. [2022-11-18 19:58:27,223 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7535545023696683 [2022-11-18 19:58:27,224 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1113 transitions. [2022-11-18 19:58:27,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1113 transitions. [2022-11-18 19:58:27,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:58:27,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1113 transitions. [2022-11-18 19:58:27,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 159.0) internal successors, (1113), 7 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states 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 19:58:27,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 211.0) internal successors, (1688), 8 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states 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 19:58:27,231 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 211.0) internal successors, (1688), 8 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states 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 19:58:27,231 INFO L175 Difference]: Start difference. First operand has 212 places, 195 transitions, 732 flow. Second operand 7 states and 1113 transitions. [2022-11-18 19:58:27,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 219 transitions, 1000 flow [2022-11-18 19:58:27,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 219 transitions, 935 flow, removed 6 selfloop flow, removed 8 redundant places. [2022-11-18 19:58:27,243 INFO L231 Difference]: Finished difference. Result has 207 places, 193 transitions, 693 flow [2022-11-18 19:58:27,243 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=655, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=693, PETRI_PLACES=207, PETRI_TRANSITIONS=193} [2022-11-18 19:58:27,244 INFO L288 CegarLoopForPetriNet]: 199 programPoint places, 8 predicate places. [2022-11-18 19:58:27,244 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 193 transitions, 693 flow [2022-11-18 19:58:27,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 150.16666666666666) internal successors, (901), 6 states have internal predecessors, (901), 0 states have call successors, (0), 0 states 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 19:58:27,245 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:27,245 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:27,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 19:58:27,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 19:58:27,451 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-18 19:58:27,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:27,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1752213869, now seen corresponding path program 1 times [2022-11-18 19:58:27,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:27,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094220771] [2022-11-18 19:58:27,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:27,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:27,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:27,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:58:27,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:27,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094220771] [2022-11-18 19:58:27,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094220771] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:58:27,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:58:27,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:58:27,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793403409] [2022-11-18 19:58:27,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:58:27,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:58:27,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:27,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:58:27,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:58:27,554 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 211 [2022-11-18 19:58:27,554 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 193 transitions, 693 flow. Second operand has 4 states, 4 states have (on average 151.75) internal successors, (607), 4 states have internal predecessors, (607), 0 states have call successors, (0), 0 states 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 19:58:27,555 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:58:27,555 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 211 [2022-11-18 19:58:27,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:58:28,566 INFO L130 PetriNetUnfolder]: 502/4108 cut-off events. [2022-11-18 19:58:28,566 INFO L131 PetriNetUnfolder]: For 4179/4179 co-relation queries the response was YES. [2022-11-18 19:58:28,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8654 conditions, 4108 events. 502/4108 cut-off events. For 4179/4179 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 33604 event pairs, 8 based on Foata normal form. 0/3886 useless extension candidates. Maximal degree in co-relation 7947. Up to 1385 conditions per place. [2022-11-18 19:58:28,595 INFO L137 encePairwiseOnDemand]: 199/211 looper letters, 80 selfloop transitions, 15 changer transitions 0/220 dead transitions. [2022-11-18 19:58:28,595 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 220 transitions, 977 flow [2022-11-18 19:58:28,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:58:28,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:58:28,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 822 transitions. [2022-11-18 19:58:28,598 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7791469194312797 [2022-11-18 19:58:28,600 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 822 transitions. [2022-11-18 19:58:28,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 822 transitions. [2022-11-18 19:58:28,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:58:28,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 822 transitions. [2022-11-18 19:58:28,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 164.4) internal successors, (822), 5 states have internal predecessors, (822), 0 states have call successors, (0), 0 states 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 19:58:28,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states 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 19:58:28,607 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states 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 19:58:28,607 INFO L175 Difference]: Start difference. First operand has 207 places, 193 transitions, 693 flow. Second operand 5 states and 822 transitions. [2022-11-18 19:58:28,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 220 transitions, 977 flow [2022-11-18 19:58:28,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 220 transitions, 939 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-18 19:58:28,621 INFO L231 Difference]: Finished difference. Result has 208 places, 195 transitions, 714 flow [2022-11-18 19:58:28,622 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=655, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=714, PETRI_PLACES=208, PETRI_TRANSITIONS=195} [2022-11-18 19:58:28,622 INFO L288 CegarLoopForPetriNet]: 199 programPoint places, 9 predicate places. [2022-11-18 19:58:28,623 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 195 transitions, 714 flow [2022-11-18 19:58:28,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 151.75) internal successors, (607), 4 states have internal predecessors, (607), 0 states have call successors, (0), 0 states 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 19:58:28,624 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:28,624 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:28,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 19:58:28,625 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-18 19:58:28,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:28,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1365750750, now seen corresponding path program 1 times [2022-11-18 19:58:28,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:28,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321092659] [2022-11-18 19:58:28,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:28,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:28,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:58:28,652 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:58:28,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:58:28,681 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:58:28,681 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 19:58:28,681 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-11-18 19:58:28,681 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-11-18 19:58:28,682 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-11-18 19:58:28,682 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-11-18 19:58:28,682 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-11-18 19:58:28,682 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-11-18 19:58:28,683 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-11-18 19:58:28,683 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-11-18 19:58:28,683 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-11-18 19:58:28,683 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2022-11-18 19:58:28,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 19:58:28,684 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:28,684 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 19:58:28,685 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-18 19:58:28,718 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2022-11-18 19:58:28,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 230 transitions, 572 flow [2022-11-18 19:58:31,112 INFO L130 PetriNetUnfolder]: 2915/16019 cut-off events. [2022-11-18 19:58:31,112 INFO L131 PetriNetUnfolder]: For 2144/2144 co-relation queries the response was YES. [2022-11-18 19:58:31,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18184 conditions, 16019 events. 2915/16019 cut-off events. For 2144/2144 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 159217 event pairs, 626 based on Foata normal form. 0/13311 useless extension candidates. Maximal degree in co-relation 9132. Up to 1024 conditions per place. [2022-11-18 19:58:31,210 INFO L82 GeneralOperation]: Start removeDead. Operand has 217 places, 230 transitions, 572 flow [2022-11-18 19:58:31,271 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 217 places, 230 transitions, 572 flow [2022-11-18 19:58:31,272 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:58:31,273 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;@31c41cfc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:58:31,273 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-18 19:58:31,281 INFO L130 PetriNetUnfolder]: 7/116 cut-off events. [2022-11-18 19:58:31,281 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:58:31,281 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:31,281 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 19:58:31,282 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-18 19:58:31,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:31,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1528502276, now seen corresponding path program 1 times [2022-11-18 19:58:31,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:31,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923070028] [2022-11-18 19:58:31,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:31,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:31,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:31,340 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 19:58:31,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:31,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923070028] [2022-11-18 19:58:31,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923070028] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:58:31,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:58:31,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:58:31,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304678004] [2022-11-18 19:58:31,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:58:31,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:58:31,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:31,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:58:31,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:58:31,343 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 230 [2022-11-18 19:58:31,344 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 230 transitions, 572 flow. Second operand has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states 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 19:58:31,344 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:58:31,345 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 230 [2022-11-18 19:58:31,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:58:35,912 INFO L130 PetriNetUnfolder]: 2671/23622 cut-off events. [2022-11-18 19:58:35,913 INFO L131 PetriNetUnfolder]: For 3252/3252 co-relation queries the response was YES. [2022-11-18 19:58:36,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34584 conditions, 23622 events. 2671/23622 cut-off events. For 3252/3252 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 285680 event pairs, 142 based on Foata normal form. 11579/31789 useless extension candidates. Maximal degree in co-relation 17287. Up to 5039 conditions per place. [2022-11-18 19:58:36,090 INFO L137 encePairwiseOnDemand]: 205/230 looper letters, 85 selfloop transitions, 10 changer transitions 27/255 dead transitions. [2022-11-18 19:58:36,090 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 255 transitions, 864 flow [2022-11-18 19:58:36,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:58:36,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:58:36,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 914 transitions. [2022-11-18 19:58:36,092 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7947826086956522 [2022-11-18 19:58:36,093 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 914 transitions. [2022-11-18 19:58:36,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 914 transitions. [2022-11-18 19:58:36,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:58:36,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 914 transitions. [2022-11-18 19:58:36,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 182.8) internal successors, (914), 5 states have internal predecessors, (914), 0 states have call successors, (0), 0 states 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 19:58:36,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 230.0) internal successors, (1380), 6 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states 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 19:58:36,098 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 230.0) internal successors, (1380), 6 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states 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 19:58:36,098 INFO L175 Difference]: Start difference. First operand has 217 places, 230 transitions, 572 flow. Second operand 5 states and 914 transitions. [2022-11-18 19:58:36,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 255 transitions, 864 flow [2022-11-18 19:58:36,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 255 transitions, 864 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:58:36,106 INFO L231 Difference]: Finished difference. Result has 221 places, 196 transitions, 566 flow [2022-11-18 19:58:36,106 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=566, PETRI_PLACES=221, PETRI_TRANSITIONS=196} [2022-11-18 19:58:36,107 INFO L288 CegarLoopForPetriNet]: 217 programPoint places, 4 predicate places. [2022-11-18 19:58:36,107 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 196 transitions, 566 flow [2022-11-18 19:58:36,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states 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 19:58:36,108 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:36,108 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:36,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-18 19:58:36,108 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-18 19:58:36,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:36,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1576319604, now seen corresponding path program 1 times [2022-11-18 19:58:36,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:36,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994811937] [2022-11-18 19:58:36,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:36,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:36,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:36,191 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 19:58:36,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:36,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994811937] [2022-11-18 19:58:36,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994811937] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:58:36,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:58:36,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:58:36,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801918819] [2022-11-18 19:58:36,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:58:36,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:58:36,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:36,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:58:36,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:58:36,194 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 230 [2022-11-18 19:58:36,195 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 196 transitions, 566 flow. Second operand has 5 states, 5 states have (on average 151.8) internal successors, (759), 5 states have internal predecessors, (759), 0 states have call successors, (0), 0 states 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 19:58:36,195 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:58:36,195 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 230 [2022-11-18 19:58:36,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:58:39,599 INFO L130 PetriNetUnfolder]: 2671/15926 cut-off events. [2022-11-18 19:58:39,599 INFO L131 PetriNetUnfolder]: For 5670/5670 co-relation queries the response was YES. [2022-11-18 19:58:39,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29021 conditions, 15926 events. 2671/15926 cut-off events. For 5670/5670 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 167687 event pairs, 636 based on Foata normal form. 0/13889 useless extension candidates. Maximal degree in co-relation 14544. Up to 7997 conditions per place. [2022-11-18 19:58:39,753 INFO L137 encePairwiseOnDemand]: 223/230 looper letters, 73 selfloop transitions, 6 changer transitions 0/203 dead transitions. [2022-11-18 19:58:39,753 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 203 transitions, 742 flow [2022-11-18 19:58:39,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:58:39,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:58:39,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 812 transitions. [2022-11-18 19:58:39,756 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7060869565217391 [2022-11-18 19:58:39,756 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 812 transitions. [2022-11-18 19:58:39,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 812 transitions. [2022-11-18 19:58:39,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:58:39,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 812 transitions. [2022-11-18 19:58:39,758 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 19:58:39,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 230.0) internal successors, (1380), 6 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states 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 19:58:39,761 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 230.0) internal successors, (1380), 6 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states 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 19:58:39,761 INFO L175 Difference]: Start difference. First operand has 221 places, 196 transitions, 566 flow. Second operand 5 states and 812 transitions. [2022-11-18 19:58:39,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 203 transitions, 742 flow [2022-11-18 19:58:39,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 203 transitions, 742 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:58:39,769 INFO L231 Difference]: Finished difference. Result has 202 places, 200 transitions, 609 flow [2022-11-18 19:58:39,770 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=609, PETRI_PLACES=202, PETRI_TRANSITIONS=200} [2022-11-18 19:58:39,770 INFO L288 CegarLoopForPetriNet]: 217 programPoint places, -15 predicate places. [2022-11-18 19:58:39,771 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 200 transitions, 609 flow [2022-11-18 19:58:39,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 151.8) internal successors, (759), 5 states have internal predecessors, (759), 0 states have call successors, (0), 0 states 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 19:58:39,771 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:39,771 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:39,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-18 19:58:39,772 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-18 19:58:39,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:39,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1053925639, now seen corresponding path program 1 times [2022-11-18 19:58:39,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:39,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862319436] [2022-11-18 19:58:39,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:39,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:39,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:39,833 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 19:58:39,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:39,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862319436] [2022-11-18 19:58:39,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862319436] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:58:39,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:58:39,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:58:39,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451862476] [2022-11-18 19:58:39,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:58:39,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:58:39,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:39,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:58:39,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:58:39,837 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 230 [2022-11-18 19:58:39,838 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 200 transitions, 609 flow. Second operand has 4 states, 4 states have (on average 160.5) internal successors, (642), 4 states have internal predecessors, (642), 0 states have call successors, (0), 0 states 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 19:58:39,838 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:58:39,838 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 230 [2022-11-18 19:58:39,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:58:43,415 INFO L130 PetriNetUnfolder]: 2671/15916 cut-off events. [2022-11-18 19:58:43,415 INFO L131 PetriNetUnfolder]: For 5677/5677 co-relation queries the response was YES. [2022-11-18 19:58:43,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28293 conditions, 15916 events. 2671/15916 cut-off events. For 5677/5677 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 167705 event pairs, 142 based on Foata normal form. 0/13894 useless extension candidates. Maximal degree in co-relation 27008. Up to 4844 conditions per place. [2022-11-18 19:58:43,543 INFO L137 encePairwiseOnDemand]: 218/230 looper letters, 86 selfloop transitions, 11 changer transitions 0/233 dead transitions. [2022-11-18 19:58:43,543 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 233 transitions, 921 flow [2022-11-18 19:58:43,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:58:43,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:58:43,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 887 transitions. [2022-11-18 19:58:43,545 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7713043478260869 [2022-11-18 19:58:43,545 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 887 transitions. [2022-11-18 19:58:43,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 887 transitions. [2022-11-18 19:58:43,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:58:43,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 887 transitions. [2022-11-18 19:58:43,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 177.4) internal successors, (887), 5 states have internal predecessors, (887), 0 states have call successors, (0), 0 states 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 19:58:43,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 230.0) internal successors, (1380), 6 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states 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 19:58:43,551 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 230.0) internal successors, (1380), 6 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states 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 19:58:43,551 INFO L175 Difference]: Start difference. First operand has 202 places, 200 transitions, 609 flow. Second operand 5 states and 887 transitions. [2022-11-18 19:58:43,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 233 transitions, 921 flow [2022-11-18 19:58:43,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 233 transitions, 918 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:58:43,561 INFO L231 Difference]: Finished difference. Result has 208 places, 202 transitions, 653 flow [2022-11-18 19:58:43,562 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=653, PETRI_PLACES=208, PETRI_TRANSITIONS=202} [2022-11-18 19:58:43,562 INFO L288 CegarLoopForPetriNet]: 217 programPoint places, -9 predicate places. [2022-11-18 19:58:43,562 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 202 transitions, 653 flow [2022-11-18 19:58:43,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 160.5) internal successors, (642), 4 states have internal predecessors, (642), 0 states have call successors, (0), 0 states 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 19:58:43,563 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:43,563 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:43,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-18 19:58:43,564 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-18 19:58:43,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:43,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1941610578, now seen corresponding path program 1 times [2022-11-18 19:58:43,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:43,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882166499] [2022-11-18 19:58:43,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:43,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:43,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:43,663 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:43,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:43,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882166499] [2022-11-18 19:58:43,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882166499] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:58:43,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953718080] [2022-11-18 19:58:43,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:43,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:58:43,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:58:43,667 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:58:43,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 19:58:43,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:43,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:58:43,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:58:43,875 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:43,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:58:43,977 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:43,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953718080] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:58:43,977 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:58:43,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 19:58:43,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027379857] [2022-11-18 19:58:43,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:58:43,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:58:43,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:43,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:58:43,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:58:43,984 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 230 [2022-11-18 19:58:43,986 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 202 transitions, 653 flow. Second operand has 12 states, 12 states have (on average 161.16666666666666) internal successors, (1934), 12 states have internal predecessors, (1934), 0 states have call successors, (0), 0 states 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 19:58:43,986 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:58:43,986 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 230 [2022-11-18 19:58:43,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:58:47,892 INFO L130 PetriNetUnfolder]: 2671/15913 cut-off events. [2022-11-18 19:58:47,892 INFO L131 PetriNetUnfolder]: For 8753/8753 co-relation queries the response was YES. [2022-11-18 19:58:47,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29264 conditions, 15913 events. 2671/15913 cut-off events. For 8753/8753 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 167708 event pairs, 142 based on Foata normal form. 3/13924 useless extension candidates. Maximal degree in co-relation 27926. Up to 4751 conditions per place. [2022-11-18 19:58:48,024 INFO L137 encePairwiseOnDemand]: 218/230 looper letters, 94 selfloop transitions, 26 changer transitions 0/256 dead transitions. [2022-11-18 19:58:48,024 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 256 transitions, 1100 flow [2022-11-18 19:58:48,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 19:58:48,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-18 19:58:48,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2807 transitions. [2022-11-18 19:58:48,030 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7179028132992328 [2022-11-18 19:58:48,031 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2807 transitions. [2022-11-18 19:58:48,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2807 transitions. [2022-11-18 19:58:48,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:58:48,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2807 transitions. [2022-11-18 19:58:48,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 165.11764705882354) internal successors, (2807), 17 states have internal predecessors, (2807), 0 states have call successors, (0), 0 states 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 19:58:48,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 230.0) internal successors, (4140), 18 states have internal predecessors, (4140), 0 states have call successors, (0), 0 states 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 19:58:48,046 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 230.0) internal successors, (4140), 18 states have internal predecessors, (4140), 0 states have call successors, (0), 0 states 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 19:58:48,046 INFO L175 Difference]: Start difference. First operand has 208 places, 202 transitions, 653 flow. Second operand 17 states and 2807 transitions. [2022-11-18 19:58:48,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 256 transitions, 1100 flow [2022-11-18 19:58:48,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 256 transitions, 1100 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:58:48,058 INFO L231 Difference]: Finished difference. Result has 223 places, 212 transitions, 760 flow [2022-11-18 19:58:48,059 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=649, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=760, PETRI_PLACES=223, PETRI_TRANSITIONS=212} [2022-11-18 19:58:48,059 INFO L288 CegarLoopForPetriNet]: 217 programPoint places, 6 predicate places. [2022-11-18 19:58:48,060 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 212 transitions, 760 flow [2022-11-18 19:58:48,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 161.16666666666666) internal successors, (1934), 12 states have internal predecessors, (1934), 0 states have call successors, (0), 0 states 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 19:58:48,061 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:48,061 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:48,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 19:58:48,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-18 19:58:48,267 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-18 19:58:48,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:48,268 INFO L85 PathProgramCache]: Analyzing trace with hash 60386811, now seen corresponding path program 1 times [2022-11-18 19:58:48,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:48,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115457228] [2022-11-18 19:58:48,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:48,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:48,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:48,404 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:48,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:48,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115457228] [2022-11-18 19:58:48,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115457228] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:58:48,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909942919] [2022-11-18 19:58:48,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:48,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:58:48,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:58:48,406 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:58:48,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 19:58:48,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:48,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:58:48,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:58:48,605 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:48,605 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:58:48,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909942919] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:58:48,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:58:48,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 19:58:48,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445418493] [2022-11-18 19:58:48,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:58:48,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:58:48,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:48,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:58:48,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:58:48,613 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 230 [2022-11-18 19:58:48,615 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 212 transitions, 760 flow. Second operand has 6 states, 6 states have (on average 160.83333333333334) internal successors, (965), 6 states have internal predecessors, (965), 0 states have call successors, (0), 0 states 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 19:58:48,615 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:58:48,615 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 230 [2022-11-18 19:58:48,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:58:51,962 INFO L130 PetriNetUnfolder]: 2671/15910 cut-off events. [2022-11-18 19:58:51,962 INFO L131 PetriNetUnfolder]: For 11560/11560 co-relation queries the response was YES. [2022-11-18 19:58:52,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29893 conditions, 15910 events. 2671/15910 cut-off events. For 11560/11560 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 167693 event pairs, 142 based on Foata normal form. 3/13921 useless extension candidates. Maximal degree in co-relation 28519. Up to 4747 conditions per place. [2022-11-18 19:58:52,119 INFO L137 encePairwiseOnDemand]: 219/230 looper letters, 84 selfloop transitions, 20 changer transitions 0/240 dead transitions. [2022-11-18 19:58:52,119 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 240 transitions, 1064 flow [2022-11-18 19:58:52,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:58:52,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:58:52,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1200 transitions. [2022-11-18 19:58:52,123 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7453416149068323 [2022-11-18 19:58:52,123 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1200 transitions. [2022-11-18 19:58:52,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1200 transitions. [2022-11-18 19:58:52,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:58:52,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1200 transitions. [2022-11-18 19:58:52,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 171.42857142857142) internal successors, (1200), 7 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 19:58:52,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 230.0) internal successors, (1840), 8 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states 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 19:58:52,132 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 230.0) internal successors, (1840), 8 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states 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 19:58:52,132 INFO L175 Difference]: Start difference. First operand has 223 places, 212 transitions, 760 flow. Second operand 7 states and 1200 transitions. [2022-11-18 19:58:52,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 240 transitions, 1064 flow [2022-11-18 19:58:52,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 240 transitions, 1006 flow, removed 9 selfloop flow, removed 7 redundant places. [2022-11-18 19:58:52,154 INFO L231 Difference]: Finished difference. Result has 218 places, 209 transitions, 724 flow [2022-11-18 19:58:52,154 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=684, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=724, PETRI_PLACES=218, PETRI_TRANSITIONS=209} [2022-11-18 19:58:52,155 INFO L288 CegarLoopForPetriNet]: 217 programPoint places, 1 predicate places. [2022-11-18 19:58:52,155 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 209 transitions, 724 flow [2022-11-18 19:58:52,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 160.83333333333334) internal successors, (965), 6 states have internal predecessors, (965), 0 states have call successors, (0), 0 states 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 19:58:52,156 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:52,156 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:52,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 19:58:52,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-18 19:58:52,363 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-18 19:58:52,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:52,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1920943390, now seen corresponding path program 1 times [2022-11-18 19:58:52,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:52,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074018072] [2022-11-18 19:58:52,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:52,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:52,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:52,464 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:58:52,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:52,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074018072] [2022-11-18 19:58:52,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074018072] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:58:52,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:58:52,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:58:52,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264388072] [2022-11-18 19:58:52,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:58:52,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:58:52,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:52,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:58:52,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:58:52,468 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 230 [2022-11-18 19:58:52,469 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 209 transitions, 724 flow. Second operand has 4 states, 4 states have (on average 162.25) internal successors, (649), 4 states have internal predecessors, (649), 0 states have call successors, (0), 0 states 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 19:58:52,470 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:58:52,470 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 230 [2022-11-18 19:58:52,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:58:55,912 INFO L130 PetriNetUnfolder]: 2671/15818 cut-off events. [2022-11-18 19:58:55,913 INFO L131 PetriNetUnfolder]: For 10971/10971 co-relation queries the response was YES. [2022-11-18 19:58:56,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31265 conditions, 15818 events. 2671/15818 cut-off events. For 10971/10971 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 166606 event pairs, 142 based on Foata normal form. 0/13994 useless extension candidates. Maximal degree in co-relation 29862. Up to 6004 conditions per place. [2022-11-18 19:58:56,065 INFO L137 encePairwiseOnDemand]: 218/230 looper letters, 90 selfloop transitions, 14 changer transitions 0/241 dead transitions. [2022-11-18 19:58:56,066 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 241 transitions, 1048 flow [2022-11-18 19:58:56,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:58:56,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:58:56,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 887 transitions. [2022-11-18 19:58:56,067 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7713043478260869 [2022-11-18 19:58:56,068 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 887 transitions. [2022-11-18 19:58:56,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 887 transitions. [2022-11-18 19:58:56,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:58:56,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 887 transitions. [2022-11-18 19:58:56,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 177.4) internal successors, (887), 5 states have internal predecessors, (887), 0 states have call successors, (0), 0 states 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 19:58:56,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 230.0) internal successors, (1380), 6 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states 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 19:58:56,072 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 230.0) internal successors, (1380), 6 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states 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 19:58:56,072 INFO L175 Difference]: Start difference. First operand has 218 places, 209 transitions, 724 flow. Second operand 5 states and 887 transitions. [2022-11-18 19:58:56,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 241 transitions, 1048 flow [2022-11-18 19:58:56,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 241 transitions, 1026 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 19:58:56,088 INFO L231 Difference]: Finished difference. Result has 221 places, 211 transitions, 758 flow [2022-11-18 19:58:56,088 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=758, PETRI_PLACES=221, PETRI_TRANSITIONS=211} [2022-11-18 19:58:56,089 INFO L288 CegarLoopForPetriNet]: 217 programPoint places, 4 predicate places. [2022-11-18 19:58:56,089 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 211 transitions, 758 flow [2022-11-18 19:58:56,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 162.25) internal successors, (649), 4 states have internal predecessors, (649), 0 states have call successors, (0), 0 states 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 19:58:56,089 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:56,089 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:56,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-18 19:58:56,090 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-18 19:58:56,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:56,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1084653700, now seen corresponding path program 1 times [2022-11-18 19:58:56,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:56,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590016227] [2022-11-18 19:58:56,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:56,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:56,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:56,181 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:56,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:56,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590016227] [2022-11-18 19:58:56,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590016227] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:58:56,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340439097] [2022-11-18 19:58:56,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:56,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:58:56,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:58:56,187 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:58:56,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 19:58:56,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:56,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:58:56,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:58:56,386 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:56,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:58:56,470 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:56,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340439097] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:58:56,471 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:58:56,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 19:58:56,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238433284] [2022-11-18 19:58:56,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:58:56,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:58:56,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:56,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:58:56,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:58:56,476 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 230 [2022-11-18 19:58:56,478 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 211 transitions, 758 flow. Second operand has 12 states, 12 states have (on average 161.33333333333334) internal successors, (1936), 12 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states 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 19:58:56,479 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:58:56,479 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 230 [2022-11-18 19:58:56,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:59:00,415 INFO L130 PetriNetUnfolder]: 2671/15803 cut-off events. [2022-11-18 19:59:00,416 INFO L131 PetriNetUnfolder]: For 16090/16090 co-relation queries the response was YES. [2022-11-18 19:59:00,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31836 conditions, 15803 events. 2671/15803 cut-off events. For 16090/16090 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 166350 event pairs, 142 based on Foata normal form. 15/14488 useless extension candidates. Maximal degree in co-relation 30383. Up to 4679 conditions per place. [2022-11-18 19:59:00,564 INFO L137 encePairwiseOnDemand]: 218/230 looper letters, 98 selfloop transitions, 29 changer transitions 0/264 dead transitions. [2022-11-18 19:59:00,564 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 264 transitions, 1217 flow [2022-11-18 19:59:00,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 19:59:00,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-18 19:59:00,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2807 transitions. [2022-11-18 19:59:00,569 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7179028132992328 [2022-11-18 19:59:00,570 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2807 transitions. [2022-11-18 19:59:00,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2807 transitions. [2022-11-18 19:59:00,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:59:00,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2807 transitions. [2022-11-18 19:59:00,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 165.11764705882354) internal successors, (2807), 17 states have internal predecessors, (2807), 0 states have call successors, (0), 0 states 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 19:59:00,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 230.0) internal successors, (4140), 18 states have internal predecessors, (4140), 0 states have call successors, (0), 0 states 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 19:59:00,583 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 230.0) internal successors, (4140), 18 states have internal predecessors, (4140), 0 states have call successors, (0), 0 states 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 19:59:00,584 INFO L175 Difference]: Start difference. First operand has 221 places, 211 transitions, 758 flow. Second operand 17 states and 2807 transitions. [2022-11-18 19:59:00,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 264 transitions, 1217 flow [2022-11-18 19:59:00,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 264 transitions, 1217 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:59:00,610 INFO L231 Difference]: Finished difference. Result has 236 places, 221 transitions, 883 flow [2022-11-18 19:59:00,611 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=754, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=883, PETRI_PLACES=236, PETRI_TRANSITIONS=221} [2022-11-18 19:59:00,611 INFO L288 CegarLoopForPetriNet]: 217 programPoint places, 19 predicate places. [2022-11-18 19:59:00,612 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 221 transitions, 883 flow [2022-11-18 19:59:00,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 161.33333333333334) internal successors, (1936), 12 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states 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 19:59:00,613 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:59:00,613 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:59:00,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 19:59:00,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-18 19:59:00,819 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-18 19:59:00,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:00,819 INFO L85 PathProgramCache]: Analyzing trace with hash -735472731, now seen corresponding path program 1 times [2022-11-18 19:59:00,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:59:00,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423780282] [2022-11-18 19:59:00,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:00,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:59:00,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:00,947 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:00,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:59:00,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423780282] [2022-11-18 19:59:00,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423780282] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:59:00,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941614808] [2022-11-18 19:59:00,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:00,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:59:00,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:59:00,950 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:59:00,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 19:59:01,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:01,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:59:01,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:59:01,174 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:01,175 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:59:01,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941614808] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:59:01,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:59:01,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 19:59:01,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747802784] [2022-11-18 19:59:01,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:59:01,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:59:01,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:59:01,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:59:01,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:59:01,178 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 230 [2022-11-18 19:59:01,179 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 221 transitions, 883 flow. Second operand has 6 states, 6 states have (on average 161.16666666666666) internal successors, (967), 6 states have internal predecessors, (967), 0 states have call successors, (0), 0 states 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 19:59:01,179 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:59:01,179 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 230 [2022-11-18 19:59:01,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:59:04,516 INFO L130 PetriNetUnfolder]: 2671/15788 cut-off events. [2022-11-18 19:59:04,516 INFO L131 PetriNetUnfolder]: For 20224/20224 co-relation queries the response was YES. [2022-11-18 19:59:04,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32473 conditions, 15788 events. 2671/15788 cut-off events. For 20224/20224 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 166129 event pairs, 142 based on Foata normal form. 15/14473 useless extension candidates. Maximal degree in co-relation 30982. Up to 4659 conditions per place. [2022-11-18 19:59:04,663 INFO L137 encePairwiseOnDemand]: 219/230 looper letters, 88 selfloop transitions, 23 changer transitions 0/248 dead transitions. [2022-11-18 19:59:04,663 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 248 transitions, 1199 flow [2022-11-18 19:59:04,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:59:04,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:59:04,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1200 transitions. [2022-11-18 19:59:04,665 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7453416149068323 [2022-11-18 19:59:04,665 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1200 transitions. [2022-11-18 19:59:04,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1200 transitions. [2022-11-18 19:59:04,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:59:04,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1200 transitions. [2022-11-18 19:59:04,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 171.42857142857142) internal successors, (1200), 7 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 19:59:04,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 230.0) internal successors, (1840), 8 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states 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 19:59:04,673 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 230.0) internal successors, (1840), 8 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states 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 19:59:04,673 INFO L175 Difference]: Start difference. First operand has 236 places, 221 transitions, 883 flow. Second operand 7 states and 1200 transitions. [2022-11-18 19:59:04,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 248 transitions, 1199 flow [2022-11-18 19:59:04,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 248 transitions, 1120 flow, removed 9 selfloop flow, removed 8 redundant places. [2022-11-18 19:59:04,709 INFO L231 Difference]: Finished difference. Result has 230 places, 218 transitions, 832 flow [2022-11-18 19:59:04,710 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=786, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=832, PETRI_PLACES=230, PETRI_TRANSITIONS=218} [2022-11-18 19:59:04,711 INFO L288 CegarLoopForPetriNet]: 217 programPoint places, 13 predicate places. [2022-11-18 19:59:04,711 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 218 transitions, 832 flow [2022-11-18 19:59:04,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 161.16666666666666) internal successors, (967), 6 states have internal predecessors, (967), 0 states have call successors, (0), 0 states 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 19:59:04,711 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:59:04,712 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:59:04,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 19:59:04,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-18 19:59:04,917 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-18 19:59:04,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:04,918 INFO L85 PathProgramCache]: Analyzing trace with hash -235519255, now seen corresponding path program 1 times [2022-11-18 19:59:04,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:59:04,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77726262] [2022-11-18 19:59:04,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:04,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:59:04,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:05,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:59:05,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:59:05,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77726262] [2022-11-18 19:59:05,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77726262] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:59:05,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:59:05,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:59:05,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015098867] [2022-11-18 19:59:05,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:59:05,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:59:05,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:59:05,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:59:05,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:59:05,014 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 230 [2022-11-18 19:59:05,015 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 218 transitions, 832 flow. Second operand has 4 states, 4 states have (on average 162.75) internal successors, (651), 4 states have internal predecessors, (651), 0 states have call successors, (0), 0 states 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 19:59:05,016 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:59:05,016 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 230 [2022-11-18 19:59:05,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:59:08,506 INFO L130 PetriNetUnfolder]: 2671/15525 cut-off events. [2022-11-18 19:59:08,507 INFO L131 PetriNetUnfolder]: For 16421/16421 co-relation queries the response was YES. [2022-11-18 19:59:08,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33757 conditions, 15525 events. 2671/15525 cut-off events. For 16421/16421 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 161968 event pairs, 142 based on Foata normal form. 0/14705 useless extension candidates. Maximal degree in co-relation 32267. Up to 6004 conditions per place. [2022-11-18 19:59:08,634 INFO L137 encePairwiseOnDemand]: 218/230 looper letters, 94 selfloop transitions, 17 changer transitions 0/249 dead transitions. [2022-11-18 19:59:08,634 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 249 transitions, 1168 flow [2022-11-18 19:59:08,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:59:08,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:59:08,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 887 transitions. [2022-11-18 19:59:08,636 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7713043478260869 [2022-11-18 19:59:08,636 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 887 transitions. [2022-11-18 19:59:08,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 887 transitions. [2022-11-18 19:59:08,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:59:08,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 887 transitions. [2022-11-18 19:59:08,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 177.4) internal successors, (887), 5 states have internal predecessors, (887), 0 states have call successors, (0), 0 states 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 19:59:08,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 230.0) internal successors, (1380), 6 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states 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 19:59:08,640 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 230.0) internal successors, (1380), 6 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states 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 19:59:08,640 INFO L175 Difference]: Start difference. First operand has 230 places, 218 transitions, 832 flow. Second operand 5 states and 887 transitions. [2022-11-18 19:59:08,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 249 transitions, 1168 flow [2022-11-18 19:59:08,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 249 transitions, 1143 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 19:59:08,671 INFO L231 Difference]: Finished difference. Result has 233 places, 220 transitions, 872 flow [2022-11-18 19:59:08,671 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=807, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=872, PETRI_PLACES=233, PETRI_TRANSITIONS=220} [2022-11-18 19:59:08,672 INFO L288 CegarLoopForPetriNet]: 217 programPoint places, 16 predicate places. [2022-11-18 19:59:08,672 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 220 transitions, 872 flow [2022-11-18 19:59:08,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 162.75) internal successors, (651), 4 states have internal predecessors, (651), 0 states have call successors, (0), 0 states 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 19:59:08,672 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:59:08,673 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:59:08,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-18 19:59:08,673 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-18 19:59:08,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:08,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1636358386, now seen corresponding path program 1 times [2022-11-18 19:59:08,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:59:08,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42737527] [2022-11-18 19:59:08,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:08,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:59:08,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:09,699 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 74 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:09,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:59:09,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42737527] [2022-11-18 19:59:09,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42737527] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:59:09,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660996751] [2022-11-18 19:59:09,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:09,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:59:09,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:59:09,703 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:59:09,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 19:59:09,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:09,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-18 19:59:09,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:59:10,031 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 19:59:10,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-18 19:59:10,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:59:10,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:59:10,588 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:59:10,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:59:11,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 19:59:11,049 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 86 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:11,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:59:11,319 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_356 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#setPool~0#1.base| v_ArrVal_356) |c_~#iSet~0.base|) |c_~#iSet~0.offset|) (+ 2 |c_ULTIMATE.start_main_~i~0#1|))) is different from false [2022-11-18 19:59:11,386 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_356 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#setPool~0#1.base| v_ArrVal_356) |c_~#iSet~0.base|) |c_~#iSet~0.offset|) (+ 3 |c_ULTIMATE.start_main_#t~post39#1|))) is different from false [2022-11-18 19:59:11,411 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_356 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#setPool~0#1.base| v_ArrVal_356) |c_~#iSet~0.base|) |c_~#iSet~0.offset|) (+ 3 |c_ULTIMATE.start_main_~i~0#1|))) is different from false [2022-11-18 19:59:12,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2022-11-18 19:59:12,106 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-18 19:59:12,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2022-11-18 19:59:12,111 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 35 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 66 not checked. [2022-11-18 19:59:12,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660996751] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:59:12,112 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:59:12,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 43 [2022-11-18 19:59:12,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381576564] [2022-11-18 19:59:12,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:59:12,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-18 19:59:12,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:59:12,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-18 19:59:12,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=1310, Unknown=12, NotChecked=234, Total=1806 [2022-11-18 19:59:12,119 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 230 [2022-11-18 19:59:12,123 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 220 transitions, 872 flow. Second operand has 43 states, 43 states have (on average 130.02325581395348) internal successors, (5591), 43 states have internal predecessors, (5591), 0 states have call successors, (0), 0 states 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 19:59:12,123 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:59:12,123 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 230 [2022-11-18 19:59:12,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:59:25,430 INFO L130 PetriNetUnfolder]: 2745/16427 cut-off events. [2022-11-18 19:59:25,430 INFO L131 PetriNetUnfolder]: For 26787/26787 co-relation queries the response was YES. [2022-11-18 19:59:25,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37340 conditions, 16427 events. 2745/16427 cut-off events. For 26787/26787 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 173166 event pairs, 637 based on Foata normal form. 1/16079 useless extension candidates. Maximal degree in co-relation 34139. Up to 8006 conditions per place. [2022-11-18 19:59:25,600 INFO L137 encePairwiseOnDemand]: 211/230 looper letters, 175 selfloop transitions, 37 changer transitions 0/319 dead transitions. [2022-11-18 19:59:25,600 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 319 transitions, 1748 flow [2022-11-18 19:59:25,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-18 19:59:25,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-11-18 19:59:25,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3335 transitions. [2022-11-18 19:59:25,604 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.58 [2022-11-18 19:59:25,605 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 3335 transitions. [2022-11-18 19:59:25,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 3335 transitions. [2022-11-18 19:59:25,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:59:25,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 3335 transitions. [2022-11-18 19:59:25,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 133.4) internal successors, (3335), 25 states have internal predecessors, (3335), 0 states have call successors, (0), 0 states 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 19:59:25,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 230.0) internal successors, (5980), 26 states have internal predecessors, (5980), 0 states have call successors, (0), 0 states 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 19:59:25,617 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 230.0) internal successors, (5980), 26 states have internal predecessors, (5980), 0 states have call successors, (0), 0 states 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 19:59:25,617 INFO L175 Difference]: Start difference. First operand has 233 places, 220 transitions, 872 flow. Second operand 25 states and 3335 transitions. [2022-11-18 19:59:25,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 319 transitions, 1748 flow [2022-11-18 19:59:25,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 319 transitions, 1748 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:59:25,676 INFO L231 Difference]: Finished difference. Result has 274 places, 251 transitions, 1261 flow [2022-11-18 19:59:25,676 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=872, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1261, PETRI_PLACES=274, PETRI_TRANSITIONS=251} [2022-11-18 19:59:25,677 INFO L288 CegarLoopForPetriNet]: 217 programPoint places, 57 predicate places. [2022-11-18 19:59:25,677 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 251 transitions, 1261 flow [2022-11-18 19:59:25,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 130.02325581395348) internal successors, (5591), 43 states have internal predecessors, (5591), 0 states have call successors, (0), 0 states 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 19:59:25,678 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:59:25,678 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:59:25,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 19:59:25,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-18 19:59:25,879 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-18 19:59:25,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:25,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1979500189, now seen corresponding path program 1 times [2022-11-18 19:59:25,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:59:25,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163323459] [2022-11-18 19:59:25,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:25,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:59:25,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:26,023 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 19:59:26,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:59:26,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163323459] [2022-11-18 19:59:26,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163323459] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:59:26,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126195738] [2022-11-18 19:59:26,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:26,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:59:26,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:59:26,026 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:59:26,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 19:59:26,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:26,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:59:26,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:59:26,282 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 19:59:26,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:59:26,396 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 19:59:26,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126195738] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:59:26,397 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:59:26,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 19:59:26,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816039781] [2022-11-18 19:59:26,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:59:26,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:59:26,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:59:26,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:59:26,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:59:26,400 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 230 [2022-11-18 19:59:26,401 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 251 transitions, 1261 flow. Second operand has 12 states, 12 states have (on average 162.33333333333334) internal successors, (1948), 12 states have internal predecessors, (1948), 0 states have call successors, (0), 0 states 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 19:59:26,401 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:59:26,401 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 230 [2022-11-18 19:59:26,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:59:32,481 INFO L130 PetriNetUnfolder]: 3890/22733 cut-off events. [2022-11-18 19:59:32,481 INFO L131 PetriNetUnfolder]: For 51996/51996 co-relation queries the response was YES. [2022-11-18 19:59:32,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53665 conditions, 22733 events. 3890/22733 cut-off events. For 51996/51996 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 258400 event pairs, 1 based on Foata normal form. 504/22551 useless extension candidates. Maximal degree in co-relation 50430. Up to 3879 conditions per place. [2022-11-18 19:59:32,766 INFO L137 encePairwiseOnDemand]: 217/230 looper letters, 143 selfloop transitions, 43 changer transitions 2/336 dead transitions. [2022-11-18 19:59:32,766 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 336 transitions, 2063 flow [2022-11-18 19:59:32,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 19:59:32,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 19:59:32,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2995 transitions. [2022-11-18 19:59:32,770 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7234299516908212 [2022-11-18 19:59:32,770 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2995 transitions. [2022-11-18 19:59:32,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2995 transitions. [2022-11-18 19:59:32,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:59:32,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2995 transitions. [2022-11-18 19:59:32,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 166.38888888888889) internal successors, (2995), 18 states have internal predecessors, (2995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:32,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 230.0) internal successors, (4370), 19 states have internal predecessors, (4370), 0 states have call successors, (0), 0 states 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 19:59:32,778 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 230.0) internal successors, (4370), 19 states have internal predecessors, (4370), 0 states have call successors, (0), 0 states 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 19:59:32,778 INFO L175 Difference]: Start difference. First operand has 274 places, 251 transitions, 1261 flow. Second operand 18 states and 2995 transitions. [2022-11-18 19:59:32,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 336 transitions, 2063 flow [2022-11-18 19:59:32,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 336 transitions, 2056 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-18 19:59:32,879 INFO L231 Difference]: Finished difference. Result has 293 places, 267 transitions, 1503 flow [2022-11-18 19:59:32,880 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=1254, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1503, PETRI_PLACES=293, PETRI_TRANSITIONS=267} [2022-11-18 19:59:32,880 INFO L288 CegarLoopForPetriNet]: 217 programPoint places, 76 predicate places. [2022-11-18 19:59:32,880 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 267 transitions, 1503 flow [2022-11-18 19:59:32,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 162.33333333333334) internal successors, (1948), 12 states have internal predecessors, (1948), 0 states have call successors, (0), 0 states 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 19:59:32,881 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:59:32,881 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:59:32,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 19:59:33,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:59:33,083 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-18 19:59:33,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:33,084 INFO L85 PathProgramCache]: Analyzing trace with hash 605753876, now seen corresponding path program 1 times [2022-11-18 19:59:33,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:59:33,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115976534] [2022-11-18 19:59:33,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:33,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:59:33,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:33,220 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 19:59:33,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:59:33,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115976534] [2022-11-18 19:59:33,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115976534] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:59:33,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757664198] [2022-11-18 19:59:33,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:33,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:59:33,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:59:33,222 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:59:33,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fb5701-d8ab-47be-886b-d0fbf5ebecd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 19:59:33,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:33,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:59:33,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:59:33,443 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 19:59:33,443 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:59:33,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1757664198] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:59:33,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:59:33,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 19:59:33,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161157426] [2022-11-18 19:59:33,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:59:33,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:59:33,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:59:33,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:59:33,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:59:33,447 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 230 [2022-11-18 19:59:33,447 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 267 transitions, 1503 flow. Second operand has 6 states, 6 states have (on average 163.16666666666666) internal successors, (979), 6 states have internal predecessors, (979), 0 states have call successors, (0), 0 states 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 19:59:33,448 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:59:33,448 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 230 [2022-11-18 19:59:33,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand