./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6af1fa-d9a2-4690-84b6-6cb0ff1d51ff/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6af1fa-d9a2-4690-84b6-6cb0ff1d51ff/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6af1fa-d9a2-4690-84b6-6cb0ff1d51ff/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6af1fa-d9a2-4690-84b6-6cb0ff1d51ff/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6af1fa-d9a2-4690-84b6-6cb0ff1d51ff/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6af1fa-d9a2-4690-84b6-6cb0ff1d51ff/bin/uautomizer-ug76WZFUDN --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 b78a1de0122078b80177387d59eedcdf8d73ccef913955b4bda0200e53e1d3da --- 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-6b4ec56 [2022-11-20 10:48:27,335 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:48:27,338 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:48:27,364 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:48:27,365 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:48:27,366 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:48:27,368 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:48:27,371 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:48:27,373 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:48:27,375 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:48:27,376 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:48:27,378 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:48:27,379 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:48:27,380 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:48:27,382 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:48:27,384 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:48:27,385 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:48:27,386 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:48:27,389 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:48:27,391 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:48:27,393 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:48:27,402 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:48:27,404 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:48:27,405 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:48:27,409 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:48:27,421 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:48:27,421 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:48:27,423 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:48:27,423 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:48:27,425 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:48:27,425 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:48:27,426 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:48:27,427 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:48:27,428 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:48:27,432 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:48:27,433 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:48:27,434 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:48:27,436 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:48:27,437 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:48:27,451 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:48:27,453 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:48:27,454 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6af1fa-d9a2-4690-84b6-6cb0ff1d51ff/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 10:48:27,521 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:48:27,524 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:48:27,525 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:48:27,526 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:48:27,526 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:48:27,527 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:48:27,528 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:48:27,528 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:48:27,528 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:48:27,529 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:48:27,530 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:48:27,531 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 10:48:27,531 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:48:27,531 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:48:27,531 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:48:27,532 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:48:27,532 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:48:27,532 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:48:27,532 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 10:48:27,533 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:48:27,533 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:48:27,533 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:48:27,533 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:48:27,534 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:48:27,534 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:48:27,534 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:48:27,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:48:27,535 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:48:27,535 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:48:27,535 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:48:27,536 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:48:27,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:48:27,536 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:48:27,537 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:48:27,537 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:48:27,537 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_7f6af1fa-d9a2-4690-84b6-6cb0ff1d51ff/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6af1fa-d9a2-4690-84b6-6cb0ff1d51ff/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b78a1de0122078b80177387d59eedcdf8d73ccef913955b4bda0200e53e1d3da [2022-11-20 10:48:27,866 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:48:27,916 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:48:27,919 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:48:27,921 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:48:27,921 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:48:27,923 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6af1fa-d9a2-4690-84b6-6cb0ff1d51ff/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c [2022-11-20 10:48:31,565 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:48:31,889 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:48:31,890 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6af1fa-d9a2-4690-84b6-6cb0ff1d51ff/sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c [2022-11-20 10:48:31,900 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6af1fa-d9a2-4690-84b6-6cb0ff1d51ff/bin/uautomizer-ug76WZFUDN/data/3b7572ab3/74a24ef4382849b5b1d3858c8073102a/FLAG9cbe5544c [2022-11-20 10:48:31,919 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6af1fa-d9a2-4690-84b6-6cb0ff1d51ff/bin/uautomizer-ug76WZFUDN/data/3b7572ab3/74a24ef4382849b5b1d3858c8073102a [2022-11-20 10:48:31,922 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:48:31,924 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:48:31,926 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:48:31,927 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:48:31,932 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:48:31,933 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:48:31" (1/1) ... [2022-11-20 10:48:31,935 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65ccb1ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:31, skipping insertion in model container [2022-11-20 10:48:31,935 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:48:31" (1/1) ... [2022-11-20 10:48:31,947 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:48:31,981 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:48:32,318 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6af1fa-d9a2-4690-84b6-6cb0ff1d51ff/sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c[2482,2495] [2022-11-20 10:48:32,329 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:48:32,355 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:48:32,409 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6af1fa-d9a2-4690-84b6-6cb0ff1d51ff/sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c[2482,2495] [2022-11-20 10:48:32,415 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:48:32,440 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:48:32,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:32 WrapperNode [2022-11-20 10:48:32,441 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:48:32,442 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:48:32,443 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:48:32,443 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:48:32,453 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:32" (1/1) ... [2022-11-20 10:48:32,483 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:32" (1/1) ... [2022-11-20 10:48:32,541 INFO L138 Inliner]: procedures = 25, calls = 39, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 238 [2022-11-20 10:48:32,543 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:48:32,544 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:48:32,544 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:48:32,544 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:48:32,557 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:32" (1/1) ... [2022-11-20 10:48:32,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:32" (1/1) ... [2022-11-20 10:48:32,578 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:32" (1/1) ... [2022-11-20 10:48:32,583 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:32" (1/1) ... [2022-11-20 10:48:32,605 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:32" (1/1) ... [2022-11-20 10:48:32,611 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:32" (1/1) ... [2022-11-20 10:48:32,613 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:32" (1/1) ... [2022-11-20 10:48:32,628 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:32" (1/1) ... [2022-11-20 10:48:32,631 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:48:32,633 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:48:32,633 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:48:32,633 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:48:32,634 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:32" (1/1) ... [2022-11-20 10:48:32,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:48:32,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6af1fa-d9a2-4690-84b6-6cb0ff1d51ff/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:48:32,683 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6af1fa-d9a2-4690-84b6-6cb0ff1d51ff/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:48:32,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6af1fa-d9a2-4690-84b6-6cb0ff1d51ff/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:48:32,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:48:32,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:48:32,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 10:48:32,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 10:48:32,754 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 10:48:32,756 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 10:48:32,757 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 10:48:32,757 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 10:48:32,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:48:32,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 10:48:32,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:48:32,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:48:32,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:48:32,760 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 10:48:32,954 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:48:32,957 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:48:33,679 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:48:33,693 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:48:33,694 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-20 10:48:33,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:48:33 BoogieIcfgContainer [2022-11-20 10:48:33,732 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:48:33,735 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:48:33,735 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:48:33,739 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:48:33,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:48:31" (1/3) ... [2022-11-20 10:48:33,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c1c6e33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:48:33, skipping insertion in model container [2022-11-20 10:48:33,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:32" (2/3) ... [2022-11-20 10:48:33,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c1c6e33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:48:33, skipping insertion in model container [2022-11-20 10:48:33,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:48:33" (3/3) ... [2022-11-20 10:48:33,743 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-symm.wvr.c [2022-11-20 10:48:33,788 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 10:48:33,803 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:48:33,804 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2022-11-20 10:48:33,804 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 10:48:33,963 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 10:48:34,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 307 places, 325 transitions, 666 flow [2022-11-20 10:48:34,301 INFO L130 PetriNetUnfolder]: 25/323 cut-off events. [2022-11-20 10:48:34,302 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 10:48:34,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332 conditions, 323 events. 25/323 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 634 event pairs, 0 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 203. Up to 3 conditions per place. [2022-11-20 10:48:34,315 INFO L82 GeneralOperation]: Start removeDead. Operand has 307 places, 325 transitions, 666 flow [2022-11-20 10:48:34,330 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 273 places, 288 transitions, 585 flow [2022-11-20 10:48:34,350 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:48:34,360 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;@52c35dcc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:48:34,361 INFO L358 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2022-11-20 10:48:34,371 INFO L130 PetriNetUnfolder]: 3/62 cut-off events. [2022-11-20 10:48:34,371 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 10:48:34,372 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:48:34,380 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] [2022-11-20 10:48:34,381 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-20 10:48:34,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:48:34,387 INFO L85 PathProgramCache]: Analyzing trace with hash 2019046624, now seen corresponding path program 1 times [2022-11-20 10:48:34,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:48:34,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977930664] [2022-11-20 10:48:34,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:34,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:48:34,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:34,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:48:34,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:48:34,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977930664] [2022-11-20 10:48:34,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977930664] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:48:34,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:48:34,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:48:34,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227573806] [2022-11-20 10:48:34,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:48:34,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:48:34,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:48:35,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:48:35,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:48:35,030 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 325 [2022-11-20 10:48:35,040 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 288 transitions, 585 flow. Second operand has 4 states, 4 states have (on average 282.5) internal successors, (1130), 4 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:35,041 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:48:35,041 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 325 [2022-11-20 10:48:35,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:48:35,400 INFO L130 PetriNetUnfolder]: 19/480 cut-off events. [2022-11-20 10:48:35,400 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-11-20 10:48:35,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 541 conditions, 480 events. 19/480 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1580 event pairs, 0 based on Foata normal form. 20/424 useless extension candidates. Maximal degree in co-relation 359. Up to 29 conditions per place. [2022-11-20 10:48:35,414 INFO L137 encePairwiseOnDemand]: 300/325 looper letters, 38 selfloop transitions, 9 changer transitions 4/296 dead transitions. [2022-11-20 10:48:35,414 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 296 transitions, 704 flow [2022-11-20 10:48:35,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:48:35,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:48:35,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1476 transitions. [2022-11-20 10:48:35,446 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9083076923076923 [2022-11-20 10:48:35,447 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1476 transitions. [2022-11-20 10:48:35,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1476 transitions. [2022-11-20 10:48:35,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:48:35,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1476 transitions. [2022-11-20 10:48:35,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 295.2) internal successors, (1476), 5 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:35,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 325.0) internal successors, (1950), 6 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:35,479 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 325.0) internal successors, (1950), 6 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:35,482 INFO L175 Difference]: Start difference. First operand has 273 places, 288 transitions, 585 flow. Second operand 5 states and 1476 transitions. [2022-11-20 10:48:35,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 296 transitions, 704 flow [2022-11-20 10:48:35,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 296 transitions, 694 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 10:48:35,502 INFO L231 Difference]: Finished difference. Result has 277 places, 279 transitions, 615 flow [2022-11-20 10:48:35,504 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=615, PETRI_PLACES=277, PETRI_TRANSITIONS=279} [2022-11-20 10:48:35,509 INFO L288 CegarLoopForPetriNet]: 273 programPoint places, 4 predicate places. [2022-11-20 10:48:35,510 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 279 transitions, 615 flow [2022-11-20 10:48:35,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 282.5) internal successors, (1130), 4 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:35,512 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:48:35,513 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-20 10:48:35,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:48:35,513 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-20 10:48:35,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:48:35,514 INFO L85 PathProgramCache]: Analyzing trace with hash 2071201129, now seen corresponding path program 1 times [2022-11-20 10:48:35,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:48:35,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156945813] [2022-11-20 10:48:35,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:35,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:48:35,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:35,874 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:48:35,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:48:35,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156945813] [2022-11-20 10:48:35,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156945813] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:48:35,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530026769] [2022-11-20 10:48:35,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:35,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:48:35,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6af1fa-d9a2-4690-84b6-6cb0ff1d51ff/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:48:35,895 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6af1fa-d9a2-4690-84b6-6cb0ff1d51ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:48:35,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6af1fa-d9a2-4690-84b6-6cb0ff1d51ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:48:36,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:36,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:48:36,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:48:36,199 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:48:36,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:48:36,315 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:48:36,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530026769] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:48:36,316 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:48:36,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-20 10:48:36,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359046879] [2022-11-20 10:48:36,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:48:36,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:48:36,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:48:36,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:48:36,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:48:36,328 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 325 [2022-11-20 10:48:36,347 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 279 transitions, 615 flow. Second operand has 12 states, 12 states have (on average 283.6666666666667) internal successors, (3404), 12 states have internal predecessors, (3404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:36,347 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:48:36,347 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 325 [2022-11-20 10:48:36,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:48:37,089 INFO L130 PetriNetUnfolder]: 46/1092 cut-off events. [2022-11-20 10:48:37,089 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2022-11-20 10:48:37,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1276 conditions, 1092 events. 46/1092 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 5854 event pairs, 0 based on Foata normal form. 6/928 useless extension candidates. Maximal degree in co-relation 820. Up to 22 conditions per place. [2022-11-20 10:48:37,152 INFO L137 encePairwiseOnDemand]: 310/325 looper letters, 71 selfloop transitions, 40 changer transitions 0/356 dead transitions. [2022-11-20 10:48:37,153 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 356 transitions, 1057 flow [2022-11-20 10:48:37,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 10:48:37,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 10:48:37,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5175 transitions. [2022-11-20 10:48:37,165 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8846153846153846 [2022-11-20 10:48:37,166 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 5175 transitions. [2022-11-20 10:48:37,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 5175 transitions. [2022-11-20 10:48:37,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:48:37,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 5175 transitions. [2022-11-20 10:48:37,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 287.5) internal successors, (5175), 18 states have internal predecessors, (5175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:37,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 325.0) internal successors, (6175), 19 states have internal predecessors, (6175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:37,204 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 325.0) internal successors, (6175), 19 states have internal predecessors, (6175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:37,204 INFO L175 Difference]: Start difference. First operand has 277 places, 279 transitions, 615 flow. Second operand 18 states and 5175 transitions. [2022-11-20 10:48:37,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 356 transitions, 1057 flow [2022-11-20 10:48:37,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 356 transitions, 1052 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:48:37,216 INFO L231 Difference]: Finished difference. Result has 293 places, 306 transitions, 848 flow [2022-11-20 10:48:37,217 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=848, PETRI_PLACES=293, PETRI_TRANSITIONS=306} [2022-11-20 10:48:37,218 INFO L288 CegarLoopForPetriNet]: 273 programPoint places, 20 predicate places. [2022-11-20 10:48:37,218 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 306 transitions, 848 flow [2022-11-20 10:48:37,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 283.6666666666667) internal successors, (3404), 12 states have internal predecessors, (3404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:37,221 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:48:37,222 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:48:37,239 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6af1fa-d9a2-4690-84b6-6cb0ff1d51ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 10:48:37,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6af1fa-d9a2-4690-84b6-6cb0ff1d51ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:48:37,429 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-20 10:48:37,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:48:37,430 INFO L85 PathProgramCache]: Analyzing trace with hash -217273840, now seen corresponding path program 1 times [2022-11-20 10:48:37,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:48:37,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304395525] [2022-11-20 10:48:37,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:37,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:48:37,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:37,656 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:48:37,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:48:37,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304395525] [2022-11-20 10:48:37,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304395525] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:48:37,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183046366] [2022-11-20 10:48:37,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:37,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:48:37,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6af1fa-d9a2-4690-84b6-6cb0ff1d51ff/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:48:37,660 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6af1fa-d9a2-4690-84b6-6cb0ff1d51ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:48:37,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6af1fa-d9a2-4690-84b6-6cb0ff1d51ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 10:48:37,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:37,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:48:37,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:48:37,869 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:48:37,869 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:48:37,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183046366] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:48:37,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:48:37,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 10:48:37,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191859747] [2022-11-20 10:48:37,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:48:37,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:48:37,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:48:37,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:48:37,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:48:37,875 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 325 [2022-11-20 10:48:37,877 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 306 transitions, 848 flow. Second operand has 6 states, 6 states have (on average 283.3333333333333) internal successors, (1700), 6 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:37,877 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:48:37,877 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 325 [2022-11-20 10:48:37,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:48:38,368 INFO L130 PetriNetUnfolder]: 46/1084 cut-off events. [2022-11-20 10:48:38,368 INFO L131 PetriNetUnfolder]: For 126/126 co-relation queries the response was YES. [2022-11-20 10:48:38,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1313 conditions, 1084 events. 46/1084 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 5803 event pairs, 0 based on Foata normal form. 8/922 useless extension candidates. Maximal degree in co-relation 1019. Up to 44 conditions per place. [2022-11-20 10:48:38,384 INFO L137 encePairwiseOnDemand]: 314/325 looper letters, 39 selfloop transitions, 27 changer transitions 0/311 dead transitions. [2022-11-20 10:48:38,385 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 311 transitions, 960 flow [2022-11-20 10:48:38,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:48:38,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 10:48:38,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2014 transitions. [2022-11-20 10:48:38,390 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8852747252747253 [2022-11-20 10:48:38,390 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2014 transitions. [2022-11-20 10:48:38,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2014 transitions. [2022-11-20 10:48:38,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:48:38,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2014 transitions. [2022-11-20 10:48:38,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.7142857142857) internal successors, (2014), 7 states have internal predecessors, (2014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:38,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 325.0) internal successors, (2600), 8 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:38,406 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 325.0) internal successors, (2600), 8 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:38,407 INFO L175 Difference]: Start difference. First operand has 293 places, 306 transitions, 848 flow. Second operand 7 states and 2014 transitions. [2022-11-20 10:48:38,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 311 transitions, 960 flow [2022-11-20 10:48:38,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 311 transitions, 886 flow, removed 26 selfloop flow, removed 5 redundant places. [2022-11-20 10:48:38,424 INFO L231 Difference]: Finished difference. Result has 288 places, 298 transitions, 774 flow [2022-11-20 10:48:38,425 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=720, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=774, PETRI_PLACES=288, PETRI_TRANSITIONS=298} [2022-11-20 10:48:38,427 INFO L288 CegarLoopForPetriNet]: 273 programPoint places, 15 predicate places. [2022-11-20 10:48:38,428 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 298 transitions, 774 flow [2022-11-20 10:48:38,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 283.3333333333333) internal successors, (1700), 6 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:38,429 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:48:38,429 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:48:38,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6af1fa-d9a2-4690-84b6-6cb0ff1d51ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 10:48:38,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6af1fa-d9a2-4690-84b6-6cb0ff1d51ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:48:38,636 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-20 10:48:38,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:48:38,637 INFO L85 PathProgramCache]: Analyzing trace with hash 136033972, now seen corresponding path program 1 times [2022-11-20 10:48:38,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:48:38,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293774215] [2022-11-20 10:48:38,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:38,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:48:38,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:39,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:48:39,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:48:39,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293774215] [2022-11-20 10:48:39,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293774215] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:48:39,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:48:39,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 10:48:39,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272175103] [2022-11-20 10:48:39,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:48:39,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 10:48:39,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:48:39,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 10:48:39,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-20 10:48:39,059 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 325 [2022-11-20 10:48:39,063 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 298 transitions, 774 flow. Second operand has 11 states, 11 states have (on average 235.0909090909091) internal successors, (2586), 11 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:39,064 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:48:39,064 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 325 [2022-11-20 10:48:39,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:48:41,883 INFO L130 PetriNetUnfolder]: 1031/10066 cut-off events. [2022-11-20 10:48:41,884 INFO L131 PetriNetUnfolder]: For 234/234 co-relation queries the response was YES. [2022-11-20 10:48:41,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11751 conditions, 10066 events. 1031/10066 cut-off events. For 234/234 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 117132 event pairs, 480 based on Foata normal form. 0/7996 useless extension candidates. Maximal degree in co-relation 9374. Up to 598 conditions per place. [2022-11-20 10:48:41,957 INFO L137 encePairwiseOnDemand]: 307/325 looper letters, 113 selfloop transitions, 21 changer transitions 0/355 dead transitions. [2022-11-20 10:48:41,958 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 355 transitions, 1208 flow [2022-11-20 10:48:41,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 10:48:41,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-20 10:48:41,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3825 transitions. [2022-11-20 10:48:41,967 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7355769230769231 [2022-11-20 10:48:41,968 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3825 transitions. [2022-11-20 10:48:41,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3825 transitions. [2022-11-20 10:48:41,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:48:41,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3825 transitions. [2022-11-20 10:48:41,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 239.0625) internal successors, (3825), 16 states have internal predecessors, (3825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:41,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 325.0) internal successors, (5525), 17 states have internal predecessors, (5525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:41,993 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 325.0) internal successors, (5525), 17 states have internal predecessors, (5525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:41,993 INFO L175 Difference]: Start difference. First operand has 288 places, 298 transitions, 774 flow. Second operand 16 states and 3825 transitions. [2022-11-20 10:48:41,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 355 transitions, 1208 flow [2022-11-20 10:48:41,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 355 transitions, 1164 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 10:48:42,004 INFO L231 Difference]: Finished difference. Result has 306 places, 306 transitions, 843 flow [2022-11-20 10:48:42,004 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=843, PETRI_PLACES=306, PETRI_TRANSITIONS=306} [2022-11-20 10:48:42,006 INFO L288 CegarLoopForPetriNet]: 273 programPoint places, 33 predicate places. [2022-11-20 10:48:42,006 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 306 transitions, 843 flow [2022-11-20 10:48:42,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 235.0909090909091) internal successors, (2586), 11 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:42,008 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:48:42,008 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:48:42,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 10:48:42,009 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-20 10:48:42,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:48:42,010 INFO L85 PathProgramCache]: Analyzing trace with hash -77913376, now seen corresponding path program 1 times [2022-11-20 10:48:42,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:48:42,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507767220] [2022-11-20 10:48:42,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:42,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:48:42,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:42,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:48:42,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:48:42,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507767220] [2022-11-20 10:48:42,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507767220] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:48:42,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:48:42,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:48:42,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748112917] [2022-11-20 10:48:42,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:48:42,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:48:42,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:48:42,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:48:42,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:48:42,260 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 325 [2022-11-20 10:48:42,262 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 306 transitions, 843 flow. Second operand has 8 states, 8 states have (on average 263.25) internal successors, (2106), 8 states have internal predecessors, (2106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:42,263 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:48:42,263 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 325 [2022-11-20 10:48:42,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:48:44,737 INFO L130 PetriNetUnfolder]: 937/9275 cut-off events. [2022-11-20 10:48:44,737 INFO L131 PetriNetUnfolder]: For 681/681 co-relation queries the response was YES. [2022-11-20 10:48:44,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11200 conditions, 9275 events. 937/9275 cut-off events. For 681/681 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 105912 event pairs, 319 based on Foata normal form. 61/7670 useless extension candidates. Maximal degree in co-relation 9772. Up to 860 conditions per place. [2022-11-20 10:48:44,812 INFO L137 encePairwiseOnDemand]: 311/325 looper letters, 86 selfloop transitions, 15 changer transitions 0/333 dead transitions. [2022-11-20 10:48:44,813 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 333 transitions, 1129 flow [2022-11-20 10:48:44,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 10:48:44,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 10:48:44,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2937 transitions. [2022-11-20 10:48:44,823 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8215384615384616 [2022-11-20 10:48:44,823 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2937 transitions. [2022-11-20 10:48:44,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2937 transitions. [2022-11-20 10:48:44,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:48:44,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2937 transitions. [2022-11-20 10:48:44,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 267.0) internal successors, (2937), 11 states have internal predecessors, (2937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:44,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 325.0) internal successors, (3900), 12 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:44,858 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 325.0) internal successors, (3900), 12 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:44,858 INFO L175 Difference]: Start difference. First operand has 306 places, 306 transitions, 843 flow. Second operand 11 states and 2937 transitions. [2022-11-20 10:48:44,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 333 transitions, 1129 flow [2022-11-20 10:48:44,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 333 transitions, 1123 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 10:48:44,872 INFO L231 Difference]: Finished difference. Result has 317 places, 310 transitions, 909 flow [2022-11-20 10:48:44,873 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=837, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=909, PETRI_PLACES=317, PETRI_TRANSITIONS=310} [2022-11-20 10:48:44,875 INFO L288 CegarLoopForPetriNet]: 273 programPoint places, 44 predicate places. [2022-11-20 10:48:44,875 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 310 transitions, 909 flow [2022-11-20 10:48:44,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 263.25) internal successors, (2106), 8 states have internal predecessors, (2106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:44,877 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:48:44,877 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1] [2022-11-20 10:48:44,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 10:48:44,878 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-20 10:48:44,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:48:44,878 INFO L85 PathProgramCache]: Analyzing trace with hash -641400544, now seen corresponding path program 2 times [2022-11-20 10:48:44,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:48:44,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413990104] [2022-11-20 10:48:44,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:44,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:48:44,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:45,173 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:48:45,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:48:45,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413990104] [2022-11-20 10:48:45,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413990104] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:48:45,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171535156] [2022-11-20 10:48:45,180 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:48:45,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:48:45,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6af1fa-d9a2-4690-84b6-6cb0ff1d51ff/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:48:45,182 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6af1fa-d9a2-4690-84b6-6cb0ff1d51ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:48:45,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6af1fa-d9a2-4690-84b6-6cb0ff1d51ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 10:48:45,294 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 10:48:45,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:48:45,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 10:48:45,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:48:45,526 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-20 10:48:45,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:48:45,721 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-20 10:48:45,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171535156] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:48:45,722 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:48:45,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-20 10:48:45,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047545294] [2022-11-20 10:48:45,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:48:45,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 10:48:45,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:48:45,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 10:48:45,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-20 10:48:45,734 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 325 [2022-11-20 10:48:45,740 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 310 transitions, 909 flow. Second operand has 18 states, 18 states have (on average 255.61111111111111) internal successors, (4601), 18 states have internal predecessors, (4601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:45,740 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:48:45,740 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 325 [2022-11-20 10:48:45,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:48:50,545 INFO L130 PetriNetUnfolder]: 1313/12951 cut-off events. [2022-11-20 10:48:50,546 INFO L131 PetriNetUnfolder]: For 1378/1378 co-relation queries the response was YES. [2022-11-20 10:48:50,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16165 conditions, 12951 events. 1313/12951 cut-off events. For 1378/1378 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 154142 event pairs, 611 based on Foata normal form. 6/10627 useless extension candidates. Maximal degree in co-relation 13985. Up to 295 conditions per place. [2022-11-20 10:48:50,653 INFO L137 encePairwiseOnDemand]: 305/325 looper letters, 223 selfloop transitions, 65 changer transitions 0/506 dead transitions. [2022-11-20 10:48:50,653 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 506 transitions, 2267 flow [2022-11-20 10:48:50,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-20 10:48:50,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-11-20 10:48:50,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 12607 transitions. [2022-11-20 10:48:50,684 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7916483516483517 [2022-11-20 10:48:50,684 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 12607 transitions. [2022-11-20 10:48:50,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 12607 transitions. [2022-11-20 10:48:50,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:48:50,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 12607 transitions. [2022-11-20 10:48:50,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 257.2857142857143) internal successors, (12607), 49 states have internal predecessors, (12607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:50,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 325.0) internal successors, (16250), 50 states have internal predecessors, (16250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:50,760 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 325.0) internal successors, (16250), 50 states have internal predecessors, (16250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:50,760 INFO L175 Difference]: Start difference. First operand has 317 places, 310 transitions, 909 flow. Second operand 49 states and 12607 transitions. [2022-11-20 10:48:50,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 506 transitions, 2267 flow [2022-11-20 10:48:50,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 506 transitions, 2241 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-20 10:48:50,778 INFO L231 Difference]: Finished difference. Result has 362 places, 333 transitions, 1164 flow [2022-11-20 10:48:50,779 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=883, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=1164, PETRI_PLACES=362, PETRI_TRANSITIONS=333} [2022-11-20 10:48:50,780 INFO L288 CegarLoopForPetriNet]: 273 programPoint places, 89 predicate places. [2022-11-20 10:48:50,780 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 333 transitions, 1164 flow [2022-11-20 10:48:50,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 255.61111111111111) internal successors, (4601), 18 states have internal predecessors, (4601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:50,782 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:48:50,783 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:48:50,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6af1fa-d9a2-4690-84b6-6cb0ff1d51ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 10:48:50,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6af1fa-d9a2-4690-84b6-6cb0ff1d51ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 10:48:50,989 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-20 10:48:50,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:48:50,990 INFO L85 PathProgramCache]: Analyzing trace with hash 129225358, now seen corresponding path program 1 times [2022-11-20 10:48:50,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:48:50,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625366485] [2022-11-20 10:48:50,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:50,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:48:51,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:51,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:48:51,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:48:51,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625366485] [2022-11-20 10:48:51,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625366485] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:48:51,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:48:51,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 10:48:51,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560995809] [2022-11-20 10:48:51,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:48:51,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:48:51,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:48:51,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:48:51,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:48:51,454 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 325 [2022-11-20 10:48:51,458 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 333 transitions, 1164 flow. Second operand has 12 states, 12 states have (on average 234.91666666666666) internal successors, (2819), 12 states have internal predecessors, (2819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:51,458 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:48:51,458 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 325 [2022-11-20 10:48:51,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:48:54,572 INFO L130 PetriNetUnfolder]: 1293/12776 cut-off events. [2022-11-20 10:48:54,572 INFO L131 PetriNetUnfolder]: For 1637/1637 co-relation queries the response was YES. [2022-11-20 10:48:54,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15993 conditions, 12776 events. 1293/12776 cut-off events. For 1637/1637 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 151712 event pairs, 533 based on Foata normal form. 21/10501 useless extension candidates. Maximal degree in co-relation 13949. Up to 1346 conditions per place. [2022-11-20 10:48:54,667 INFO L137 encePairwiseOnDemand]: 305/325 looper letters, 103 selfloop transitions, 36 changer transitions 0/364 dead transitions. [2022-11-20 10:48:54,667 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 364 transitions, 1539 flow [2022-11-20 10:48:54,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 10:48:54,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 10:48:54,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4269 transitions. [2022-11-20 10:48:54,675 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7297435897435898 [2022-11-20 10:48:54,676 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4269 transitions. [2022-11-20 10:48:54,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4269 transitions. [2022-11-20 10:48:54,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:48:54,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4269 transitions. [2022-11-20 10:48:54,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 237.16666666666666) internal successors, (4269), 18 states have internal predecessors, (4269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:54,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 325.0) internal successors, (6175), 19 states have internal predecessors, (6175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:54,700 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 325.0) internal successors, (6175), 19 states have internal predecessors, (6175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:54,701 INFO L175 Difference]: Start difference. First operand has 362 places, 333 transitions, 1164 flow. Second operand 18 states and 4269 transitions. [2022-11-20 10:48:54,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 364 transitions, 1539 flow [2022-11-20 10:48:54,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 364 transitions, 1426 flow, removed 15 selfloop flow, removed 19 redundant places. [2022-11-20 10:48:54,723 INFO L231 Difference]: Finished difference. Result has 363 places, 335 transitions, 1158 flow [2022-11-20 10:48:54,724 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=1051, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1158, PETRI_PLACES=363, PETRI_TRANSITIONS=335} [2022-11-20 10:48:54,725 INFO L288 CegarLoopForPetriNet]: 273 programPoint places, 90 predicate places. [2022-11-20 10:48:54,725 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 335 transitions, 1158 flow [2022-11-20 10:48:54,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 234.91666666666666) internal successors, (2819), 12 states have internal predecessors, (2819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:54,727 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:48:54,727 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:48:54,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 10:48:54,728 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-20 10:48:54,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:48:54,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1715872949, now seen corresponding path program 1 times [2022-11-20 10:48:54,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:48:54,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313013539] [2022-11-20 10:48:54,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:54,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:48:54,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:55,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:48:55,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:48:55,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313013539] [2022-11-20 10:48:55,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313013539] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:48:55,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372354952] [2022-11-20 10:48:55,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:55,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:48:55,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6af1fa-d9a2-4690-84b6-6cb0ff1d51ff/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:48:55,151 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6af1fa-d9a2-4690-84b6-6cb0ff1d51ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:48:55,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6af1fa-d9a2-4690-84b6-6cb0ff1d51ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 10:48:55,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:55,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 10:48:55,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:48:55,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:48:55,782 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:48:55,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372354952] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:48:55,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:48:55,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 19 [2022-11-20 10:48:55,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980662960] [2022-11-20 10:48:55,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:48:55,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 10:48:55,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:48:55,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 10:48:55,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2022-11-20 10:48:55,788 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 325 [2022-11-20 10:48:55,791 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 335 transitions, 1158 flow. Second operand has 9 states, 9 states have (on average 241.0) internal successors, (2169), 9 states have internal predecessors, (2169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:55,791 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:48:55,792 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 325 [2022-11-20 10:48:55,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:48:58,519 INFO L130 PetriNetUnfolder]: 1250/13432 cut-off events. [2022-11-20 10:48:58,519 INFO L131 PetriNetUnfolder]: For 2560/2560 co-relation queries the response was YES. [2022-11-20 10:48:58,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16174 conditions, 13432 events. 1250/13432 cut-off events. For 2560/2560 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 162725 event pairs, 520 based on Foata normal form. 98/11082 useless extension candidates. Maximal degree in co-relation 15356. Up to 1476 conditions per place. [2022-11-20 10:48:58,597 INFO L137 encePairwiseOnDemand]: 311/325 looper letters, 56 selfloop transitions, 22 changer transitions 0/330 dead transitions. [2022-11-20 10:48:58,597 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 330 transitions, 1260 flow [2022-11-20 10:48:58,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 10:48:58,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 10:48:58,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2659 transitions. [2022-11-20 10:48:58,602 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7437762237762238 [2022-11-20 10:48:58,602 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2659 transitions. [2022-11-20 10:48:58,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2659 transitions. [2022-11-20 10:48:58,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:48:58,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2659 transitions. [2022-11-20 10:48:58,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 241.72727272727272) internal successors, (2659), 11 states have internal predecessors, (2659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:58,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 325.0) internal successors, (3900), 12 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:58,615 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 325.0) internal successors, (3900), 12 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:58,615 INFO L175 Difference]: Start difference. First operand has 363 places, 335 transitions, 1158 flow. Second operand 11 states and 2659 transitions. [2022-11-20 10:48:58,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 330 transitions, 1260 flow [2022-11-20 10:48:58,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 330 transitions, 1186 flow, removed 1 selfloop flow, removed 19 redundant places. [2022-11-20 10:48:58,626 INFO L231 Difference]: Finished difference. Result has 351 places, 330 transitions, 1074 flow [2022-11-20 10:48:58,627 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=1030, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1074, PETRI_PLACES=351, PETRI_TRANSITIONS=330} [2022-11-20 10:48:58,628 INFO L288 CegarLoopForPetriNet]: 273 programPoint places, 78 predicate places. [2022-11-20 10:48:58,628 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 330 transitions, 1074 flow [2022-11-20 10:48:58,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 241.0) internal successors, (2169), 9 states have internal predecessors, (2169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:58,629 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:48:58,630 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:48:58,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6af1fa-d9a2-4690-84b6-6cb0ff1d51ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 10:48:58,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6af1fa-d9a2-4690-84b6-6cb0ff1d51ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:48:58,836 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-20 10:48:58,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:48:58,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1278009817, now seen corresponding path program 1 times [2022-11-20 10:48:58,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:48:58,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659782909] [2022-11-20 10:48:58,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:58,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:48:58,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:59,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:48:59,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:48:59,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659782909] [2022-11-20 10:48:59,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659782909] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:48:59,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36142860] [2022-11-20 10:48:59,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:59,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:48:59,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6af1fa-d9a2-4690-84b6-6cb0ff1d51ff/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:48:59,250 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6af1fa-d9a2-4690-84b6-6cb0ff1d51ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:48:59,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6af1fa-d9a2-4690-84b6-6cb0ff1d51ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 10:48:59,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:59,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 10:48:59,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:48:59,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:48:59,929 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:48:59,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36142860] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:48:59,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:48:59,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 20 [2022-11-20 10:48:59,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195682350] [2022-11-20 10:48:59,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:48:59,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 10:48:59,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:48:59,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 10:48:59,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2022-11-20 10:48:59,935 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 325 [2022-11-20 10:48:59,938 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 330 transitions, 1074 flow. Second operand has 9 states, 9 states have (on average 241.11111111111111) internal successors, (2170), 9 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:59,938 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:48:59,938 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 325 [2022-11-20 10:48:59,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:49:02,308 INFO L130 PetriNetUnfolder]: 1058/11476 cut-off events. [2022-11-20 10:49:02,308 INFO L131 PetriNetUnfolder]: For 911/911 co-relation queries the response was YES. [2022-11-20 10:49:02,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13458 conditions, 11476 events. 1058/11476 cut-off events. For 911/911 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 133447 event pairs, 430 based on Foata normal form. 108/9484 useless extension candidates. Maximal degree in co-relation 11618. Up to 1213 conditions per place. [2022-11-20 10:49:02,427 INFO L137 encePairwiseOnDemand]: 307/325 looper letters, 45 selfloop transitions, 29 changer transitions 0/326 dead transitions. [2022-11-20 10:49:02,428 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 326 transitions, 1192 flow [2022-11-20 10:49:02,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 10:49:02,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-20 10:49:02,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3131 transitions. [2022-11-20 10:49:02,434 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7410650887573964 [2022-11-20 10:49:02,434 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3131 transitions. [2022-11-20 10:49:02,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3131 transitions. [2022-11-20 10:49:02,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:49:02,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3131 transitions. [2022-11-20 10:49:02,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 240.84615384615384) internal successors, (3131), 13 states have internal predecessors, (3131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:02,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 325.0) internal successors, (4550), 14 states have internal predecessors, (4550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:02,454 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 325.0) internal successors, (4550), 14 states have internal predecessors, (4550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:02,454 INFO L175 Difference]: Start difference. First operand has 351 places, 330 transitions, 1074 flow. Second operand 13 states and 3131 transitions. [2022-11-20 10:49:02,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 326 transitions, 1192 flow [2022-11-20 10:49:02,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 326 transitions, 1126 flow, removed 0 selfloop flow, removed 15 redundant places. [2022-11-20 10:49:02,465 INFO L231 Difference]: Finished difference. Result has 345 places, 326 transitions, 1036 flow [2022-11-20 10:49:02,466 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=978, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1036, PETRI_PLACES=345, PETRI_TRANSITIONS=326} [2022-11-20 10:49:02,466 INFO L288 CegarLoopForPetriNet]: 273 programPoint places, 72 predicate places. [2022-11-20 10:49:02,467 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 326 transitions, 1036 flow [2022-11-20 10:49:02,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 241.11111111111111) internal successors, (2170), 9 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:02,468 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:49:02,468 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:02,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6af1fa-d9a2-4690-84b6-6cb0ff1d51ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 10:49:02,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6af1fa-d9a2-4690-84b6-6cb0ff1d51ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:49:02,676 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-20 10:49:02,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:02,676 INFO L85 PathProgramCache]: Analyzing trace with hash 27620158, now seen corresponding path program 1 times [2022-11-20 10:49:02,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:02,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818745769] [2022-11-20 10:49:02,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:02,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:02,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:02,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:02,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:02,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818745769] [2022-11-20 10:49:02,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818745769] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:02,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:49:02,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:49:02,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36008524] [2022-11-20 10:49:02,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:02,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:49:02,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:02,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:49:02,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:49:02,974 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 325 [2022-11-20 10:49:02,976 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 326 transitions, 1036 flow. Second operand has 4 states, 4 states have (on average 292.75) internal successors, (1171), 4 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:02,976 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:49:02,976 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 325 [2022-11-20 10:49:02,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:49:04,356 INFO L130 PetriNetUnfolder]: 702/8038 cut-off events. [2022-11-20 10:49:04,357 INFO L131 PetriNetUnfolder]: For 253/253 co-relation queries the response was YES. [2022-11-20 10:49:04,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10556 conditions, 8038 events. 702/8038 cut-off events. For 253/253 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 88411 event pairs, 184 based on Foata normal form. 0/6746 useless extension candidates. Maximal degree in co-relation 9016. Up to 797 conditions per place. [2022-11-20 10:49:04,432 INFO L137 encePairwiseOnDemand]: 319/325 looper letters, 28 selfloop transitions, 4 changer transitions 0/341 dead transitions. [2022-11-20 10:49:04,432 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 341 transitions, 1137 flow [2022-11-20 10:49:04,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:49:04,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:49:04,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1489 transitions. [2022-11-20 10:49:04,436 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9163076923076923 [2022-11-20 10:49:04,436 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1489 transitions. [2022-11-20 10:49:04,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1489 transitions. [2022-11-20 10:49:04,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:49:04,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1489 transitions. [2022-11-20 10:49:04,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 297.8) internal successors, (1489), 5 states have internal predecessors, (1489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:04,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 325.0) internal successors, (1950), 6 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:04,445 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 325.0) internal successors, (1950), 6 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:04,445 INFO L175 Difference]: Start difference. First operand has 345 places, 326 transitions, 1036 flow. Second operand 5 states and 1489 transitions. [2022-11-20 10:49:04,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 341 transitions, 1137 flow [2022-11-20 10:49:04,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 341 transitions, 1079 flow, removed 0 selfloop flow, removed 12 redundant places. [2022-11-20 10:49:04,456 INFO L231 Difference]: Finished difference. Result has 340 places, 329 transitions, 1008 flow [2022-11-20 10:49:04,457 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=978, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1008, PETRI_PLACES=340, PETRI_TRANSITIONS=329} [2022-11-20 10:49:04,458 INFO L288 CegarLoopForPetriNet]: 273 programPoint places, 67 predicate places. [2022-11-20 10:49:04,458 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 329 transitions, 1008 flow [2022-11-20 10:49:04,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 292.75) internal successors, (1171), 4 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:04,459 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:49:04,459 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:04,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 10:49:04,460 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-20 10:49:04,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:04,460 INFO L85 PathProgramCache]: Analyzing trace with hash -2070988648, now seen corresponding path program 1 times [2022-11-20 10:49:04,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:04,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013160169] [2022-11-20 10:49:04,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:04,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:04,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:04,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:04,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:04,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013160169] [2022-11-20 10:49:04,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013160169] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:04,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:49:04,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:49:04,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82379496] [2022-11-20 10:49:04,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:04,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:49:04,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:04,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:49:04,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:49:04,551 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 325 [2022-11-20 10:49:04,552 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 329 transitions, 1008 flow. Second operand has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:04,552 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:49:04,553 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 325 [2022-11-20 10:49:04,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:49:07,106 INFO L130 PetriNetUnfolder]: 1212/11504 cut-off events. [2022-11-20 10:49:07,106 INFO L131 PetriNetUnfolder]: For 958/972 co-relation queries the response was YES. [2022-11-20 10:49:07,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14047 conditions, 11504 events. 1212/11504 cut-off events. For 958/972 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 144422 event pairs, 486 based on Foata normal form. 0/9402 useless extension candidates. Maximal degree in co-relation 12030. Up to 1009 conditions per place. [2022-11-20 10:49:07,221 INFO L137 encePairwiseOnDemand]: 319/325 looper letters, 27 selfloop transitions, 4 changer transitions 0/343 dead transitions. [2022-11-20 10:49:07,221 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 343 transitions, 1101 flow [2022-11-20 10:49:07,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:49:07,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:49:07,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1488 transitions. [2022-11-20 10:49:07,225 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9156923076923077 [2022-11-20 10:49:07,225 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1488 transitions. [2022-11-20 10:49:07,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1488 transitions. [2022-11-20 10:49:07,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:49:07,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1488 transitions. [2022-11-20 10:49:07,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 297.6) internal successors, (1488), 5 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:07,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 325.0) internal successors, (1950), 6 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:07,234 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 325.0) internal successors, (1950), 6 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:07,235 INFO L175 Difference]: Start difference. First operand has 340 places, 329 transitions, 1008 flow. Second operand 5 states and 1488 transitions. [2022-11-20 10:49:07,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 343 transitions, 1101 flow [2022-11-20 10:49:07,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 343 transitions, 1099 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:49:07,246 INFO L231 Difference]: Finished difference. Result has 346 places, 332 transitions, 1036 flow [2022-11-20 10:49:07,247 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=1006, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1036, PETRI_PLACES=346, PETRI_TRANSITIONS=332} [2022-11-20 10:49:07,248 INFO L288 CegarLoopForPetriNet]: 273 programPoint places, 73 predicate places. [2022-11-20 10:49:07,248 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 332 transitions, 1036 flow [2022-11-20 10:49:07,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:07,249 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:49:07,249 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:07,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 10:49:07,250 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-20 10:49:07,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:07,251 INFO L85 PathProgramCache]: Analyzing trace with hash -2068493101, now seen corresponding path program 1 times [2022-11-20 10:49:07,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:07,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357191344] [2022-11-20 10:49:07,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:07,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:07,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:07,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:07,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:07,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357191344] [2022-11-20 10:49:07,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357191344] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:07,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:49:07,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:49:07,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548702751] [2022-11-20 10:49:07,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:07,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:49:07,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:07,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:49:07,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:49:07,404 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 325 [2022-11-20 10:49:07,406 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 332 transitions, 1036 flow. Second operand has 7 states, 7 states have (on average 262.0) internal successors, (1834), 7 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:07,407 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:49:07,407 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 325 [2022-11-20 10:49:07,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:49:13,083 INFO L130 PetriNetUnfolder]: 3032/32042 cut-off events. [2022-11-20 10:49:13,083 INFO L131 PetriNetUnfolder]: For 1650/1706 co-relation queries the response was YES. [2022-11-20 10:49:13,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38945 conditions, 32042 events. 3032/32042 cut-off events. For 1650/1706 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 456889 event pairs, 1098 based on Foata normal form. 0/26603 useless extension candidates. Maximal degree in co-relation 35219. Up to 2701 conditions per place. [2022-11-20 10:49:13,331 INFO L137 encePairwiseOnDemand]: 314/325 looper letters, 120 selfloop transitions, 22 changer transitions 2/382 dead transitions. [2022-11-20 10:49:13,331 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 382 transitions, 1524 flow [2022-11-20 10:49:13,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 10:49:13,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 10:49:13,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2663 transitions. [2022-11-20 10:49:13,336 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8193846153846154 [2022-11-20 10:49:13,337 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2663 transitions. [2022-11-20 10:49:13,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2663 transitions. [2022-11-20 10:49:13,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:49:13,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2663 transitions. [2022-11-20 10:49:13,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 266.3) internal successors, (2663), 10 states have internal predecessors, (2663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:13,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 325.0) internal successors, (3575), 11 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:13,351 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 325.0) internal successors, (3575), 11 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:13,351 INFO L175 Difference]: Start difference. First operand has 346 places, 332 transitions, 1036 flow. Second operand 10 states and 2663 transitions. [2022-11-20 10:49:13,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 382 transitions, 1524 flow [2022-11-20 10:49:13,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 382 transitions, 1522 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:49:13,382 INFO L231 Difference]: Finished difference. Result has 356 places, 333 transitions, 1091 flow [2022-11-20 10:49:13,383 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=1034, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1091, PETRI_PLACES=356, PETRI_TRANSITIONS=333} [2022-11-20 10:49:13,385 INFO L288 CegarLoopForPetriNet]: 273 programPoint places, 83 predicate places. [2022-11-20 10:49:13,385 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 333 transitions, 1091 flow [2022-11-20 10:49:13,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 262.0) internal successors, (1834), 7 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:13,386 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:49:13,387 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:13,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 10:49:13,387 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-20 10:49:13,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:13,388 INFO L85 PathProgramCache]: Analyzing trace with hash 2123285769, now seen corresponding path program 1 times [2022-11-20 10:49:13,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:13,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781094632] [2022-11-20 10:49:13,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:13,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:13,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:13,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:13,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:13,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781094632] [2022-11-20 10:49:13,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781094632] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:13,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:49:13,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:49:13,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767672724] [2022-11-20 10:49:13,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:13,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:49:13,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:13,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:49:13,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:49:13,804 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 325 [2022-11-20 10:49:13,806 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 333 transitions, 1091 flow. Second operand has 7 states, 7 states have (on average 262.14285714285717) internal successors, (1835), 7 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:13,806 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:49:13,807 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 325 [2022-11-20 10:49:13,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:49:17,418 INFO L130 PetriNetUnfolder]: 2192/16327 cut-off events. [2022-11-20 10:49:17,418 INFO L131 PetriNetUnfolder]: For 1940/1940 co-relation queries the response was YES. [2022-11-20 10:49:17,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22065 conditions, 16327 events. 2192/16327 cut-off events. For 1940/1940 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 199469 event pairs, 1289 based on Foata normal form. 0/13900 useless extension candidates. Maximal degree in co-relation 20047. Up to 2883 conditions per place. [2022-11-20 10:49:17,562 INFO L137 encePairwiseOnDemand]: 314/325 looper letters, 94 selfloop transitions, 21 changer transitions 28/381 dead transitions. [2022-11-20 10:49:17,562 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 381 transitions, 1570 flow [2022-11-20 10:49:17,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 10:49:17,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 10:49:17,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2661 transitions. [2022-11-20 10:49:17,569 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8187692307692308 [2022-11-20 10:49:17,569 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2661 transitions. [2022-11-20 10:49:17,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2661 transitions. [2022-11-20 10:49:17,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:49:17,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2661 transitions. [2022-11-20 10:49:17,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 266.1) internal successors, (2661), 10 states have internal predecessors, (2661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:17,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 325.0) internal successors, (3575), 11 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:17,587 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 325.0) internal successors, (3575), 11 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:17,588 INFO L175 Difference]: Start difference. First operand has 356 places, 333 transitions, 1091 flow. Second operand 10 states and 2661 transitions. [2022-11-20 10:49:17,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 381 transitions, 1570 flow [2022-11-20 10:49:17,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 381 transitions, 1531 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-20 10:49:17,611 INFO L231 Difference]: Finished difference. Result has 360 places, 332 transitions, 1093 flow [2022-11-20 10:49:17,612 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=1052, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1093, PETRI_PLACES=360, PETRI_TRANSITIONS=332} [2022-11-20 10:49:17,613 INFO L288 CegarLoopForPetriNet]: 273 programPoint places, 87 predicate places. [2022-11-20 10:49:17,613 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 332 transitions, 1093 flow [2022-11-20 10:49:17,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 262.14285714285717) internal successors, (1835), 7 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:17,614 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:49:17,614 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:17,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 10:49:17,615 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-20 10:49:17,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:17,616 INFO L85 PathProgramCache]: Analyzing trace with hash 82975452, now seen corresponding path program 1 times [2022-11-20 10:49:17,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:17,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350164878] [2022-11-20 10:49:17,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:17,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:17,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:17,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:49:17,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:17,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350164878] [2022-11-20 10:49:17,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350164878] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:17,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:49:17,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:49:17,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931361867] [2022-11-20 10:49:17,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:17,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:49:17,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:17,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:49:17,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:49:17,838 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 325 [2022-11-20 10:49:17,841 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 332 transitions, 1093 flow. Second operand has 7 states, 7 states have (on average 262.57142857142856) internal successors, (1838), 7 states have internal predecessors, (1838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:17,841 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:49:17,842 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 325 [2022-11-20 10:49:17,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:49:23,218 INFO L130 PetriNetUnfolder]: 2324/25992 cut-off events. [2022-11-20 10:49:23,218 INFO L131 PetriNetUnfolder]: For 1793/1865 co-relation queries the response was YES. [2022-11-20 10:49:23,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31531 conditions, 25992 events. 2324/25992 cut-off events. For 1793/1865 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 362719 event pairs, 1002 based on Foata normal form. 9/21984 useless extension candidates. Maximal degree in co-relation 30833. Up to 2356 conditions per place. [2022-11-20 10:49:23,458 INFO L137 encePairwiseOnDemand]: 316/325 looper letters, 98 selfloop transitions, 15 changer transitions 2/353 dead transitions. [2022-11-20 10:49:23,458 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 353 transitions, 1385 flow [2022-11-20 10:49:23,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:49:23,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 10:49:23,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2135 transitions. [2022-11-20 10:49:23,462 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8211538461538461 [2022-11-20 10:49:23,463 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2135 transitions. [2022-11-20 10:49:23,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2135 transitions. [2022-11-20 10:49:23,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:49:23,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2135 transitions. [2022-11-20 10:49:23,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 266.875) internal successors, (2135), 8 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:23,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 325.0) internal successors, (2925), 9 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:23,475 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 325.0) internal successors, (2925), 9 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:23,475 INFO L175 Difference]: Start difference. First operand has 360 places, 332 transitions, 1093 flow. Second operand 8 states and 2135 transitions. [2022-11-20 10:49:23,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 353 transitions, 1385 flow [2022-11-20 10:49:23,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 353 transitions, 1332 flow, removed 4 selfloop flow, removed 11 redundant places. [2022-11-20 10:49:23,515 INFO L231 Difference]: Finished difference. Result has 356 places, 333 transitions, 1087 flow [2022-11-20 10:49:23,516 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=1044, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1087, PETRI_PLACES=356, PETRI_TRANSITIONS=333} [2022-11-20 10:49:23,517 INFO L288 CegarLoopForPetriNet]: 273 programPoint places, 83 predicate places. [2022-11-20 10:49:23,517 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 333 transitions, 1087 flow [2022-11-20 10:49:23,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 262.57142857142856) internal successors, (1838), 7 states have internal predecessors, (1838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:23,518 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:49:23,518 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:23,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 10:49:23,519 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-20 10:49:23,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:23,519 INFO L85 PathProgramCache]: Analyzing trace with hash 26290258, now seen corresponding path program 1 times [2022-11-20 10:49:23,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:23,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026532562] [2022-11-20 10:49:23,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:23,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:23,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:23,687 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:49:23,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:23,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026532562] [2022-11-20 10:49:23,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026532562] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:23,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:49:23,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:49:23,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322710472] [2022-11-20 10:49:23,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:23,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:49:23,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:23,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:49:23,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:49:23,692 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 325 [2022-11-20 10:49:23,694 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 333 transitions, 1087 flow. Second operand has 7 states, 7 states have (on average 262.7142857142857) internal successors, (1839), 7 states have internal predecessors, (1839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:23,694 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:49:23,694 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 325 [2022-11-20 10:49:23,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:49:27,006 INFO L130 PetriNetUnfolder]: 1663/12205 cut-off events. [2022-11-20 10:49:27,006 INFO L131 PetriNetUnfolder]: For 1694/1694 co-relation queries the response was YES. [2022-11-20 10:49:27,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16652 conditions, 12205 events. 1663/12205 cut-off events. For 1694/1694 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 141930 event pairs, 1012 based on Foata normal form. 0/10372 useless extension candidates. Maximal degree in co-relation 15962. Up to 2512 conditions per place. [2022-11-20 10:49:27,121 INFO L137 encePairwiseOnDemand]: 316/325 looper letters, 82 selfloop transitions, 13 changer transitions 19/352 dead transitions. [2022-11-20 10:49:27,121 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 352 transitions, 1366 flow [2022-11-20 10:49:27,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:49:27,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 10:49:27,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2133 transitions. [2022-11-20 10:49:27,126 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8203846153846154 [2022-11-20 10:49:27,126 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2133 transitions. [2022-11-20 10:49:27,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2133 transitions. [2022-11-20 10:49:27,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:49:27,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2133 transitions. [2022-11-20 10:49:27,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 266.625) internal successors, (2133), 8 states have internal predecessors, (2133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:27,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 325.0) internal successors, (2925), 9 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:27,136 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 325.0) internal successors, (2925), 9 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:27,136 INFO L175 Difference]: Start difference. First operand has 356 places, 333 transitions, 1087 flow. Second operand 8 states and 2133 transitions. [2022-11-20 10:49:27,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 352 transitions, 1366 flow [2022-11-20 10:49:27,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 352 transitions, 1339 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 10:49:27,154 INFO L231 Difference]: Finished difference. Result has 360 places, 331 transitions, 1073 flow [2022-11-20 10:49:27,154 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=1060, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1073, PETRI_PLACES=360, PETRI_TRANSITIONS=331} [2022-11-20 10:49:27,155 INFO L288 CegarLoopForPetriNet]: 273 programPoint places, 87 predicate places. [2022-11-20 10:49:27,155 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 331 transitions, 1073 flow [2022-11-20 10:49:27,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 262.7142857142857) internal successors, (1839), 7 states have internal predecessors, (1839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:27,156 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:49:27,156 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:27,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 10:49:27,157 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-20 10:49:27,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:27,158 INFO L85 PathProgramCache]: Analyzing trace with hash -714306653, now seen corresponding path program 1 times [2022-11-20 10:49:27,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:27,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797019426] [2022-11-20 10:49:27,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:27,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:27,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:28,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:49:28,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:28,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797019426] [2022-11-20 10:49:28,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797019426] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:49:28,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337709644] [2022-11-20 10:49:28,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:28,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:49:28,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6af1fa-d9a2-4690-84b6-6cb0ff1d51ff/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:49:28,140 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6af1fa-d9a2-4690-84b6-6cb0ff1d51ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:49:28,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6af1fa-d9a2-4690-84b6-6cb0ff1d51ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 10:49:28,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:28,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-20 10:49:28,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:49:28,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 10:49:28,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:49:28,798 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 [2022-11-20 10:49:28,924 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 [2022-11-20 10:49:28,944 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:49:28,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:49:29,180 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_261 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_261) c_~a2~0.base) c_~a2~0.offset) 9223372039002259456)) is different from false [2022-11-20 10:49:29,215 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_261 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_261) |c_ULTIMATE.start_main_#t~ret16#1.base|) |c_ULTIMATE.start_main_#t~ret16#1.offset|) 9223372039002259456)) is different from false [2022-11-20 10:49:29,368 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_261 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_261) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 9223372039002259456)) is different from false [2022-11-20 10:49:29,425 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:49:29,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2022-11-20 10:49:29,444 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:49:29,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 34 treesize of output 32 [2022-11-20 10:49:29,824 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-11-20 10:49:29,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337709644] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:49:29,824 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:49:29,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 40 [2022-11-20 10:49:29,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727467061] [2022-11-20 10:49:29,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:49:29,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-20 10:49:29,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:29,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-20 10:49:29,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1276, Unknown=10, NotChecked=222, Total=1640 [2022-11-20 10:49:29,839 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 325 [2022-11-20 10:49:29,847 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 331 transitions, 1073 flow. Second operand has 41 states, 41 states have (on average 228.97560975609755) internal successors, (9388), 41 states have internal predecessors, (9388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:29,847 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:49:29,847 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 325 [2022-11-20 10:49:29,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:49:52,298 INFO L130 PetriNetUnfolder]: 17667/86886 cut-off events. [2022-11-20 10:49:52,298 INFO L131 PetriNetUnfolder]: For 2982/3126 co-relation queries the response was YES. [2022-11-20 10:49:53,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119981 conditions, 86886 events. 17667/86886 cut-off events. For 2982/3126 co-relation queries the response was YES. Maximal size of possible extension queue 1675. Compared 1364141 event pairs, 7217 based on Foata normal form. 0/74588 useless extension candidates. Maximal degree in co-relation 119236. Up to 13029 conditions per place.