./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/array-eq-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/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_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/array-eq-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/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_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/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 1a172ae6dd3a5207c1a2580ce55cc24497fcf78586be62b7482a56f18aa6beb2 --- 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 11:34:15,241 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:34:15,243 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:34:15,264 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:34:15,264 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:34:15,265 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:34:15,267 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:34:15,269 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:34:15,270 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:34:15,272 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:34:15,273 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:34:15,274 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:34:15,274 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:34:15,276 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:34:15,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:34:15,278 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:34:15,279 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:34:15,280 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:34:15,282 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:34:15,284 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:34:15,286 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:34:15,288 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:34:15,289 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:34:15,290 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:34:15,294 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:34:15,295 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:34:15,295 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:34:15,296 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:34:15,304 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:34:15,305 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:34:15,305 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:34:15,306 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:34:15,307 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:34:15,308 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:34:15,309 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:34:15,310 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:34:15,310 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:34:15,313 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:34:15,313 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:34:15,314 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:34:15,317 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:34:15,318 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 11:34:15,356 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:34:15,362 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:34:15,362 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:34:15,363 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:34:15,364 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:34:15,364 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:34:15,365 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:34:15,365 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:34:15,366 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:34:15,366 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:34:15,367 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:34:15,368 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:34:15,368 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:34:15,368 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:34:15,368 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:34:15,368 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:34:15,369 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:34:15,369 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:34:15,369 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 11:34:15,369 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:34:15,370 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:34:15,370 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:34:15,370 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:34:15,370 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:34:15,371 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:34:15,371 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:34:15,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:34:15,371 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:34:15,372 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:34:15,372 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:34:15,373 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:34:15,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:34:15,373 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:34:15,374 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:34:15,374 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:34:15,374 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_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a172ae6dd3a5207c1a2580ce55cc24497fcf78586be62b7482a56f18aa6beb2 [2022-11-20 11:34:15,711 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:34:15,734 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:34:15,738 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:34:15,740 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:34:15,740 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:34:15,742 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/array-eq-symm.wvr.c [2022-11-20 11:34:19,005 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:34:19,254 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:34:19,255 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/sv-benchmarks/c/weaver/array-eq-symm.wvr.c [2022-11-20 11:34:19,267 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/data/c18531a5d/163908367ef94ba3bb212bf6b16ea0a8/FLAGaf2fb23d1 [2022-11-20 11:34:19,285 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/data/c18531a5d/163908367ef94ba3bb212bf6b16ea0a8 [2022-11-20 11:34:19,288 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:34:19,290 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:34:19,292 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:34:19,292 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:34:19,299 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:34:19,300 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:34:19" (1/1) ... [2022-11-20 11:34:19,301 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a87d3f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:19, skipping insertion in model container [2022-11-20 11:34:19,301 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:34:19" (1/1) ... [2022-11-20 11:34:19,310 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:34:19,330 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:34:19,555 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_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/sv-benchmarks/c/weaver/array-eq-symm.wvr.c[2251,2264] [2022-11-20 11:34:19,561 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:34:19,573 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:34:19,593 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_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/sv-benchmarks/c/weaver/array-eq-symm.wvr.c[2251,2264] [2022-11-20 11:34:19,596 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:34:19,611 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:34:19,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:19 WrapperNode [2022-11-20 11:34:19,612 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:34:19,613 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:34:19,613 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:34:19,613 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:34:19,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:19" (1/1) ... [2022-11-20 11:34:19,629 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:19" (1/1) ... [2022-11-20 11:34:19,651 INFO L138 Inliner]: procedures = 23, calls = 29, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 116 [2022-11-20 11:34:19,651 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:34:19,652 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:34:19,652 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:34:19,652 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:34:19,660 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:19" (1/1) ... [2022-11-20 11:34:19,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:19" (1/1) ... [2022-11-20 11:34:19,663 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:19" (1/1) ... [2022-11-20 11:34:19,663 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:19" (1/1) ... [2022-11-20 11:34:19,671 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:19" (1/1) ... [2022-11-20 11:34:19,675 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:19" (1/1) ... [2022-11-20 11:34:19,677 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:19" (1/1) ... [2022-11-20 11:34:19,678 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:19" (1/1) ... [2022-11-20 11:34:19,681 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:34:19,682 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:34:19,682 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:34:19,682 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:34:19,683 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:19" (1/1) ... [2022-11-20 11:34:19,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:34:19,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:34:19,719 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:34:19,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:34:19,765 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:34:19,765 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 11:34:19,765 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 11:34:19,766 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 11:34:19,766 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 11:34:19,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:34:19,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:34:19,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:34:19,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 11:34:19,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:34:19,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:34:19,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:34:19,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:34:19,769 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 11:34:19,889 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:34:19,891 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:34:20,262 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:34:20,287 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:34:20,287 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-20 11:34:20,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:34:20 BoogieIcfgContainer [2022-11-20 11:34:20,290 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:34:20,292 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:34:20,293 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:34:20,296 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:34:20,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:34:19" (1/3) ... [2022-11-20 11:34:20,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2db84b83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:34:20, skipping insertion in model container [2022-11-20 11:34:20,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:19" (2/3) ... [2022-11-20 11:34:20,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2db84b83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:34:20, skipping insertion in model container [2022-11-20 11:34:20,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:34:20" (3/3) ... [2022-11-20 11:34:20,300 INFO L112 eAbstractionObserver]: Analyzing ICFG array-eq-symm.wvr.c [2022-11-20 11:34:20,310 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:34:20,320 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:34:20,320 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-20 11:34:20,321 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:34:20,445 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 11:34:20,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 189 transitions, 394 flow [2022-11-20 11:34:20,611 INFO L130 PetriNetUnfolder]: 15/187 cut-off events. [2022-11-20 11:34:20,611 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 11:34:20,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 187 events. 15/187 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 163 event pairs, 0 based on Foata normal form. 0/164 useless extension candidates. Maximal degree in co-relation 143. Up to 3 conditions per place. [2022-11-20 11:34:20,617 INFO L82 GeneralOperation]: Start removeDead. Operand has 181 places, 189 transitions, 394 flow [2022-11-20 11:34:20,624 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 161 places, 168 transitions, 345 flow [2022-11-20 11:34:20,634 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:34:20,642 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;@3951bdaa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:34:20,642 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-11-20 11:34:20,661 INFO L130 PetriNetUnfolder]: 3/63 cut-off events. [2022-11-20 11:34:20,661 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:34:20,661 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:34:20,662 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 11:34:20,662 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 11:34:20,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:34:20,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1764182683, now seen corresponding path program 1 times [2022-11-20 11:34:20,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:34:20,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628320175] [2022-11-20 11:34:20,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:34:20,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:34:20,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:34:21,223 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 11:34:21,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:34:21,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628320175] [2022-11-20 11:34:21,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628320175] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:34:21,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:34:21,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:34:21,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725083858] [2022-11-20 11:34:21,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:34:21,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:34:21,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:34:21,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:34:21,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:34:21,349 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 189 [2022-11-20 11:34:21,360 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 168 transitions, 345 flow. Second operand has 4 states, 4 states have (on average 152.5) internal successors, (610), 4 states have internal predecessors, (610), 0 states have call successors, (0), 0 states 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 11:34:21,360 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:34:21,361 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 189 [2022-11-20 11:34:21,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:34:21,585 INFO L130 PetriNetUnfolder]: 11/248 cut-off events. [2022-11-20 11:34:21,585 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-11-20 11:34:21,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309 conditions, 248 events. 11/248 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 513 event pairs, 0 based on Foata normal form. 12/232 useless extension candidates. Maximal degree in co-relation 243. Up to 29 conditions per place. [2022-11-20 11:34:21,589 INFO L137 encePairwiseOnDemand]: 168/189 looper letters, 38 selfloop transitions, 9 changer transitions 4/180 dead transitions. [2022-11-20 11:34:21,590 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 180 transitions, 472 flow [2022-11-20 11:34:21,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:34:21,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:34:21,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 818 transitions. [2022-11-20 11:34:21,608 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8656084656084656 [2022-11-20 11:34:21,609 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 818 transitions. [2022-11-20 11:34:21,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 818 transitions. [2022-11-20 11:34:21,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:34:21,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 818 transitions. [2022-11-20 11:34:21,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 163.6) internal successors, (818), 5 states have internal predecessors, (818), 0 states have call successors, (0), 0 states 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 11:34:21,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states 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 11:34:21,633 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states 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 11:34:21,635 INFO L175 Difference]: Start difference. First operand has 161 places, 168 transitions, 345 flow. Second operand 5 states and 818 transitions. [2022-11-20 11:34:21,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 180 transitions, 472 flow [2022-11-20 11:34:21,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 180 transitions, 462 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:34:21,647 INFO L231 Difference]: Finished difference. Result has 165 places, 163 transitions, 383 flow [2022-11-20 11:34:21,649 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=383, PETRI_PLACES=165, PETRI_TRANSITIONS=163} [2022-11-20 11:34:21,654 INFO L288 CegarLoopForPetriNet]: 161 programPoint places, 4 predicate places. [2022-11-20 11:34:21,654 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 163 transitions, 383 flow [2022-11-20 11:34:21,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 152.5) internal successors, (610), 4 states have internal predecessors, (610), 0 states have call successors, (0), 0 states 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 11:34:21,655 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:34:21,656 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 11:34:21,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:34:21,656 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 11:34:21,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:34:21,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1886939101, now seen corresponding path program 1 times [2022-11-20 11:34:21,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:34:21,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096659749] [2022-11-20 11:34:21,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:34:21,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:34:21,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:34:21,829 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 11:34:21,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:34:21,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096659749] [2022-11-20 11:34:21,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096659749] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:34:21,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322590423] [2022-11-20 11:34:21,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:34:21,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:34:21,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:34:21,835 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:34:21,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:34:21,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:34:21,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:34:21,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:34:22,095 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 11:34:22,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:34:22,172 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 11:34:22,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322590423] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:34:22,173 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:34:22,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-20 11:34:22,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081935985] [2022-11-20 11:34:22,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:34:22,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:34:22,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:34:22,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:34:22,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:34:22,182 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 189 [2022-11-20 11:34:22,185 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 163 transitions, 383 flow. Second operand has 12 states, 12 states have (on average 153.66666666666666) internal successors, (1844), 12 states have internal predecessors, (1844), 0 states have call successors, (0), 0 states 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 11:34:22,186 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:34:22,186 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 189 [2022-11-20 11:34:22,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:34:22,635 INFO L130 PetriNetUnfolder]: 26/512 cut-off events. [2022-11-20 11:34:22,635 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2022-11-20 11:34:22,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 696 conditions, 512 events. 26/512 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1778 event pairs, 0 based on Foata normal form. 6/468 useless extension candidates. Maximal degree in co-relation 356. Up to 22 conditions per place. [2022-11-20 11:34:22,640 INFO L137 encePairwiseOnDemand]: 174/189 looper letters, 71 selfloop transitions, 40 changer transitions 0/240 dead transitions. [2022-11-20 11:34:22,640 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 240 transitions, 825 flow [2022-11-20 11:34:22,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 11:34:22,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 11:34:22,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2835 transitions. [2022-11-20 11:34:22,647 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2022-11-20 11:34:22,647 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2835 transitions. [2022-11-20 11:34:22,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2835 transitions. [2022-11-20 11:34:22,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:34:22,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2835 transitions. [2022-11-20 11:34:22,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 157.5) internal successors, (2835), 18 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states 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 11:34:22,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 189.0) internal successors, (3591), 19 states have internal predecessors, (3591), 0 states have call successors, (0), 0 states 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 11:34:22,667 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 189.0) internal successors, (3591), 19 states have internal predecessors, (3591), 0 states have call successors, (0), 0 states 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 11:34:22,667 INFO L175 Difference]: Start difference. First operand has 165 places, 163 transitions, 383 flow. Second operand 18 states and 2835 transitions. [2022-11-20 11:34:22,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 240 transitions, 825 flow [2022-11-20 11:34:22,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 240 transitions, 820 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:34:22,674 INFO L231 Difference]: Finished difference. Result has 181 places, 190 transitions, 616 flow [2022-11-20 11:34:22,675 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=616, PETRI_PLACES=181, PETRI_TRANSITIONS=190} [2022-11-20 11:34:22,675 INFO L288 CegarLoopForPetriNet]: 161 programPoint places, 20 predicate places. [2022-11-20 11:34:22,676 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 190 transitions, 616 flow [2022-11-20 11:34:22,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 153.66666666666666) internal successors, (1844), 12 states have internal predecessors, (1844), 0 states have call successors, (0), 0 states 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 11:34:22,677 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:34:22,678 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 11:34:22,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:34:22,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:34:22,888 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 11:34:22,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:34:22,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1634429729, now seen corresponding path program 1 times [2022-11-20 11:34:22,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:34:22,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847923123] [2022-11-20 11:34:22,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:34:22,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:34:22,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:34:23,086 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 11:34:23,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:34:23,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847923123] [2022-11-20 11:34:23,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847923123] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:34:23,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129326452] [2022-11-20 11:34:23,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:34:23,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:34:23,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:34:23,091 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:34:23,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:34:23,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:34:23,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:34:23,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:34:23,295 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 11:34:23,295 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:34:23,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129326452] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:34:23,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:34:23,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 11:34:23,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749939876] [2022-11-20 11:34:23,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:34:23,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:34:23,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:34:23,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:34:23,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:34:23,308 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 189 [2022-11-20 11:34:23,310 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 190 transitions, 616 flow. Second operand has 6 states, 6 states have (on average 153.33333333333334) internal successors, (920), 6 states have internal predecessors, (920), 0 states have call successors, (0), 0 states 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 11:34:23,310 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:34:23,311 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 189 [2022-11-20 11:34:23,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:34:23,575 INFO L130 PetriNetUnfolder]: 26/504 cut-off events. [2022-11-20 11:34:23,576 INFO L131 PetriNetUnfolder]: For 126/126 co-relation queries the response was YES. [2022-11-20 11:34:23,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 733 conditions, 504 events. 26/504 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1727 event pairs, 0 based on Foata normal form. 8/462 useless extension candidates. Maximal degree in co-relation 555. Up to 44 conditions per place. [2022-11-20 11:34:23,581 INFO L137 encePairwiseOnDemand]: 178/189 looper letters, 39 selfloop transitions, 27 changer transitions 0/195 dead transitions. [2022-11-20 11:34:23,582 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 195 transitions, 728 flow [2022-11-20 11:34:23,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:34:23,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:34:23,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1104 transitions. [2022-11-20 11:34:23,587 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8344671201814059 [2022-11-20 11:34:23,587 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1104 transitions. [2022-11-20 11:34:23,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1104 transitions. [2022-11-20 11:34:23,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:34:23,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1104 transitions. [2022-11-20 11:34:23,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 157.71428571428572) internal successors, (1104), 7 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states 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 11:34:23,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 189.0) internal successors, (1512), 8 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states 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 11:34:23,597 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 189.0) internal successors, (1512), 8 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states 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 11:34:23,597 INFO L175 Difference]: Start difference. First operand has 181 places, 190 transitions, 616 flow. Second operand 7 states and 1104 transitions. [2022-11-20 11:34:23,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 195 transitions, 728 flow [2022-11-20 11:34:23,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 195 transitions, 654 flow, removed 26 selfloop flow, removed 5 redundant places. [2022-11-20 11:34:23,613 INFO L231 Difference]: Finished difference. Result has 176 places, 182 transitions, 542 flow [2022-11-20 11:34:23,613 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=542, PETRI_PLACES=176, PETRI_TRANSITIONS=182} [2022-11-20 11:34:23,616 INFO L288 CegarLoopForPetriNet]: 161 programPoint places, 15 predicate places. [2022-11-20 11:34:23,616 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 182 transitions, 542 flow [2022-11-20 11:34:23,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 153.33333333333334) internal successors, (920), 6 states have internal predecessors, (920), 0 states have call successors, (0), 0 states 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 11:34:23,617 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:34:23,617 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 11:34:23,628 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-20 11:34:23,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:34:23,823 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 11:34:23,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:34:23,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1696542949, now seen corresponding path program 2 times [2022-11-20 11:34:23,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:34:23,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751654895] [2022-11-20 11:34:23,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:34:23,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:34:23,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:34:24,158 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 11:34:24,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:34:24,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751654895] [2022-11-20 11:34:24,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751654895] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:34:24,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439597886] [2022-11-20 11:34:24,164 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:34:24,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:34:24,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:34:24,166 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:34:24,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:34:24,255 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:34:24,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:34:24,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 11:34:24,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:34:24,492 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 11:34:24,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:34:24,673 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 11:34:24,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439597886] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:34:24,673 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:34:24,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-20 11:34:24,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032130315] [2022-11-20 11:34:24,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:34:24,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:34:24,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:34:24,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:34:24,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:34:24,679 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 189 [2022-11-20 11:34:24,682 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 182 transitions, 542 flow. Second operand has 18 states, 18 states have (on average 135.61111111111111) internal successors, (2441), 18 states have internal predecessors, (2441), 0 states have call successors, (0), 0 states 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 11:34:24,682 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:34:24,682 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 189 [2022-11-20 11:34:24,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:34:26,061 INFO L130 PetriNetUnfolder]: 148/1260 cut-off events. [2022-11-20 11:34:26,061 INFO L131 PetriNetUnfolder]: For 161/203 co-relation queries the response was YES. [2022-11-20 11:34:26,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1730 conditions, 1260 events. 148/1260 cut-off events. For 161/203 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 7001 event pairs, 56 based on Foata normal form. 4/1040 useless extension candidates. Maximal degree in co-relation 1188. Up to 56 conditions per place. [2022-11-20 11:34:26,070 INFO L137 encePairwiseOnDemand]: 169/189 looper letters, 121 selfloop transitions, 65 changer transitions 0/296 dead transitions. [2022-11-20 11:34:26,070 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 296 transitions, 1225 flow [2022-11-20 11:34:26,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-20 11:34:26,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-11-20 11:34:26,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 6658 transitions. [2022-11-20 11:34:26,086 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.718928841377821 [2022-11-20 11:34:26,086 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 6658 transitions. [2022-11-20 11:34:26,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 6658 transitions. [2022-11-20 11:34:26,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:34:26,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 6658 transitions. [2022-11-20 11:34:26,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 135.87755102040816) internal successors, (6658), 49 states have internal predecessors, (6658), 0 states have call successors, (0), 0 states 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 11:34:26,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 189.0) internal successors, (9450), 50 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states 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 11:34:26,131 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 189.0) internal successors, (9450), 50 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states 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 11:34:26,131 INFO L175 Difference]: Start difference. First operand has 176 places, 182 transitions, 542 flow. Second operand 49 states and 6658 transitions. [2022-11-20 11:34:26,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 296 transitions, 1225 flow [2022-11-20 11:34:26,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 296 transitions, 1182 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 11:34:26,142 INFO L231 Difference]: Finished difference. Result has 222 places, 207 transitions, 757 flow [2022-11-20 11:34:26,142 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=757, PETRI_PLACES=222, PETRI_TRANSITIONS=207} [2022-11-20 11:34:26,144 INFO L288 CegarLoopForPetriNet]: 161 programPoint places, 61 predicate places. [2022-11-20 11:34:26,144 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 207 transitions, 757 flow [2022-11-20 11:34:26,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 135.61111111111111) internal successors, (2441), 18 states have internal predecessors, (2441), 0 states have call successors, (0), 0 states 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 11:34:26,145 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:34:26,146 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 11:34:26,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:34:26,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-20 11:34:26,358 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 11:34:26,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:34:26,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1030998590, now seen corresponding path program 1 times [2022-11-20 11:34:26,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:34:26,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822163732] [2022-11-20 11:34:26,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:34:26,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:34:26,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:34:26,536 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 11:34:26,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:34:26,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822163732] [2022-11-20 11:34:26,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822163732] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:34:26,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:34:26,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:34:26,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65851558] [2022-11-20 11:34:26,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:34:26,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:34:26,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:34:26,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:34:26,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:34:26,540 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 189 [2022-11-20 11:34:26,541 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 207 transitions, 757 flow. Second operand has 4 states, 4 states have (on average 163.75) internal successors, (655), 4 states have internal predecessors, (655), 0 states have call successors, (0), 0 states 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 11:34:26,541 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:34:26,541 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 189 [2022-11-20 11:34:26,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:34:26,857 INFO L130 PetriNetUnfolder]: 197/1197 cut-off events. [2022-11-20 11:34:26,857 INFO L131 PetriNetUnfolder]: For 166/194 co-relation queries the response was YES. [2022-11-20 11:34:26,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2116 conditions, 1197 events. 197/1197 cut-off events. For 166/194 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 7273 event pairs, 28 based on Foata normal form. 0/1057 useless extension candidates. Maximal degree in co-relation 1849. Up to 253 conditions per place. [2022-11-20 11:34:26,865 INFO L137 encePairwiseOnDemand]: 183/189 looper letters, 24 selfloop transitions, 4 changer transitions 0/220 dead transitions. [2022-11-20 11:34:26,865 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 220 transitions, 846 flow [2022-11-20 11:34:26,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:34:26,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:34:26,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 840 transitions. [2022-11-20 11:34:26,868 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8888888888888888 [2022-11-20 11:34:26,869 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 840 transitions. [2022-11-20 11:34:26,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 840 transitions. [2022-11-20 11:34:26,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:34:26,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 840 transitions. [2022-11-20 11:34:26,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 168.0) internal successors, (840), 5 states have internal predecessors, (840), 0 states have call successors, (0), 0 states 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 11:34:26,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states 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 11:34:26,874 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states 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 11:34:26,874 INFO L175 Difference]: Start difference. First operand has 222 places, 207 transitions, 757 flow. Second operand 5 states and 840 transitions. [2022-11-20 11:34:26,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 220 transitions, 846 flow [2022-11-20 11:34:26,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 220 transitions, 763 flow, removed 9 selfloop flow, removed 15 redundant places. [2022-11-20 11:34:26,881 INFO L231 Difference]: Finished difference. Result has 214 places, 210 transitions, 704 flow [2022-11-20 11:34:26,881 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=704, PETRI_PLACES=214, PETRI_TRANSITIONS=210} [2022-11-20 11:34:26,882 INFO L288 CegarLoopForPetriNet]: 161 programPoint places, 53 predicate places. [2022-11-20 11:34:26,882 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 210 transitions, 704 flow [2022-11-20 11:34:26,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 163.75) internal successors, (655), 4 states have internal predecessors, (655), 0 states have call successors, (0), 0 states 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 11:34:26,882 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:34:26,883 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] [2022-11-20 11:34:26,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:34:26,883 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 11:34:26,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:34:26,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1766105785, now seen corresponding path program 1 times [2022-11-20 11:34:26,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:34:26,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47106336] [2022-11-20 11:34:26,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:34:26,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:34:26,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:34:26,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:34:26,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:34:26,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47106336] [2022-11-20 11:34:26,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47106336] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:34:26,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:34:26,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:34:26,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695619543] [2022-11-20 11:34:26,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:34:26,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:34:26,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:34:26,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:34:26,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:34:26,981 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 189 [2022-11-20 11:34:26,982 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 210 transitions, 704 flow. Second operand has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states 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 11:34:26,982 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:34:26,982 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 189 [2022-11-20 11:34:26,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:34:27,411 INFO L130 PetriNetUnfolder]: 358/1701 cut-off events. [2022-11-20 11:34:27,411 INFO L131 PetriNetUnfolder]: For 379/386 co-relation queries the response was YES. [2022-11-20 11:34:27,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2669 conditions, 1701 events. 358/1701 cut-off events. For 379/386 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 13353 event pairs, 56 based on Foata normal form. 0/1393 useless extension candidates. Maximal degree in co-relation 2422. Up to 407 conditions per place. [2022-11-20 11:34:27,423 INFO L137 encePairwiseOnDemand]: 183/189 looper letters, 23 selfloop transitions, 4 changer transitions 0/222 dead transitions. [2022-11-20 11:34:27,423 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 222 transitions, 785 flow [2022-11-20 11:34:27,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:34:27,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:34:27,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 839 transitions. [2022-11-20 11:34:27,428 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8878306878306879 [2022-11-20 11:34:27,429 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 839 transitions. [2022-11-20 11:34:27,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 839 transitions. [2022-11-20 11:34:27,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:34:27,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 839 transitions. [2022-11-20 11:34:27,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 167.8) internal successors, (839), 5 states have internal predecessors, (839), 0 states have call successors, (0), 0 states 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 11:34:27,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states 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 11:34:27,434 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states 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 11:34:27,434 INFO L175 Difference]: Start difference. First operand has 214 places, 210 transitions, 704 flow. Second operand 5 states and 839 transitions. [2022-11-20 11:34:27,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 222 transitions, 785 flow [2022-11-20 11:34:27,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 222 transitions, 783 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:34:27,440 INFO L231 Difference]: Finished difference. Result has 220 places, 213 transitions, 732 flow [2022-11-20 11:34:27,441 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=732, PETRI_PLACES=220, PETRI_TRANSITIONS=213} [2022-11-20 11:34:27,441 INFO L288 CegarLoopForPetriNet]: 161 programPoint places, 59 predicate places. [2022-11-20 11:34:27,441 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 213 transitions, 732 flow [2022-11-20 11:34:27,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states 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 11:34:27,442 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:34:27,442 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:34:27,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:34:27,442 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 11:34:27,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:34:27,443 INFO L85 PathProgramCache]: Analyzing trace with hash -328088979, now seen corresponding path program 1 times [2022-11-20 11:34:27,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:34:27,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278231107] [2022-11-20 11:34:27,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:34:27,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:34:27,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:34:27,633 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 11:34:27,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:34:27,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278231107] [2022-11-20 11:34:27,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278231107] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:34:27,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:34:27,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:34:27,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012907356] [2022-11-20 11:34:27,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:34:27,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:34:27,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:34:27,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:34:27,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:34:27,637 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 189 [2022-11-20 11:34:27,638 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 213 transitions, 732 flow. Second operand has 7 states, 7 states have (on average 142.71428571428572) internal successors, (999), 7 states have internal predecessors, (999), 0 states have call successors, (0), 0 states 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 11:34:27,638 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:34:27,639 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 189 [2022-11-20 11:34:27,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:34:28,744 INFO L130 PetriNetUnfolder]: 855/4938 cut-off events. [2022-11-20 11:34:28,745 INFO L131 PetriNetUnfolder]: For 828/898 co-relation queries the response was YES. [2022-11-20 11:34:28,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7989 conditions, 4938 events. 855/4938 cut-off events. For 828/898 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 45217 event pairs, 266 based on Foata normal form. 0/4287 useless extension candidates. Maximal degree in co-relation 6841. Up to 603 conditions per place. [2022-11-20 11:34:28,778 INFO L137 encePairwiseOnDemand]: 177/189 looper letters, 102 selfloop transitions, 23 changer transitions 1/258 dead transitions. [2022-11-20 11:34:28,778 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 258 transitions, 1153 flow [2022-11-20 11:34:28,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:34:28,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 11:34:28,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1462 transitions. [2022-11-20 11:34:28,782 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7735449735449735 [2022-11-20 11:34:28,782 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1462 transitions. [2022-11-20 11:34:28,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1462 transitions. [2022-11-20 11:34:28,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:34:28,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1462 transitions. [2022-11-20 11:34:28,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 146.2) internal successors, (1462), 10 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states 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 11:34:28,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 189.0) internal successors, (2079), 11 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states 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 11:34:28,791 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 189.0) internal successors, (2079), 11 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states 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 11:34:28,791 INFO L175 Difference]: Start difference. First operand has 220 places, 213 transitions, 732 flow. Second operand 10 states and 1462 transitions. [2022-11-20 11:34:28,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 258 transitions, 1153 flow [2022-11-20 11:34:28,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 258 transitions, 1151 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:34:28,802 INFO L231 Difference]: Finished difference. Result has 230 places, 214 transitions, 788 flow [2022-11-20 11:34:28,802 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=788, PETRI_PLACES=230, PETRI_TRANSITIONS=214} [2022-11-20 11:34:28,803 INFO L288 CegarLoopForPetriNet]: 161 programPoint places, 69 predicate places. [2022-11-20 11:34:28,803 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 214 transitions, 788 flow [2022-11-20 11:34:28,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 142.71428571428572) internal successors, (999), 7 states have internal predecessors, (999), 0 states have call successors, (0), 0 states 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 11:34:28,804 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:34:28,804 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:34:28,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:34:28,805 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 11:34:28,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:34:28,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1272256164, now seen corresponding path program 1 times [2022-11-20 11:34:28,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:34:28,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269319241] [2022-11-20 11:34:28,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:34:28,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:34:28,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:34:29,041 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 11:34:29,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:34:29,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269319241] [2022-11-20 11:34:29,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269319241] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:34:29,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:34:29,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:34:29,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812913717] [2022-11-20 11:34:29,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:34:29,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:34:29,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:34:29,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:34:29,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:34:29,047 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 189 [2022-11-20 11:34:29,048 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 214 transitions, 788 flow. Second operand has 7 states, 7 states have (on average 142.85714285714286) internal successors, (1000), 7 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states 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 11:34:29,049 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:34:29,049 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 189 [2022-11-20 11:34:29,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:34:29,974 INFO L130 PetriNetUnfolder]: 750/3587 cut-off events. [2022-11-20 11:34:29,975 INFO L131 PetriNetUnfolder]: For 1151/1214 co-relation queries the response was YES. [2022-11-20 11:34:29,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6216 conditions, 3587 events. 750/3587 cut-off events. For 1151/1214 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 30257 event pairs, 259 based on Foata normal form. 0/3237 useless extension candidates. Maximal degree in co-relation 5324. Up to 638 conditions per place. [2022-11-20 11:34:30,000 INFO L137 encePairwiseOnDemand]: 177/189 looper letters, 89 selfloop transitions, 23 changer transitions 12/256 dead transitions. [2022-11-20 11:34:30,000 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 256 transitions, 1199 flow [2022-11-20 11:34:30,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:34:30,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 11:34:30,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1460 transitions. [2022-11-20 11:34:30,007 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7724867724867724 [2022-11-20 11:34:30,007 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1460 transitions. [2022-11-20 11:34:30,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1460 transitions. [2022-11-20 11:34:30,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:34:30,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1460 transitions. [2022-11-20 11:34:30,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 146.0) internal successors, (1460), 10 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states 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 11:34:30,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 189.0) internal successors, (2079), 11 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states 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 11:34:30,019 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 189.0) internal successors, (2079), 11 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states 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 11:34:30,019 INFO L175 Difference]: Start difference. First operand has 230 places, 214 transitions, 788 flow. Second operand 10 states and 1460 transitions. [2022-11-20 11:34:30,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 256 transitions, 1199 flow [2022-11-20 11:34:30,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 256 transitions, 1168 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-20 11:34:30,030 INFO L231 Difference]: Finished difference. Result has 234 places, 214 transitions, 809 flow [2022-11-20 11:34:30,030 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=758, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=809, PETRI_PLACES=234, PETRI_TRANSITIONS=214} [2022-11-20 11:34:30,034 INFO L288 CegarLoopForPetriNet]: 161 programPoint places, 73 predicate places. [2022-11-20 11:34:30,034 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 214 transitions, 809 flow [2022-11-20 11:34:30,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 142.85714285714286) internal successors, (1000), 7 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states 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 11:34:30,034 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:34:30,035 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:34:30,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:34:30,035 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 11:34:30,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:34:30,045 INFO L85 PathProgramCache]: Analyzing trace with hash -910210257, now seen corresponding path program 1 times [2022-11-20 11:34:30,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:34:30,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353878653] [2022-11-20 11:34:30,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:34:30,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:34:30,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:34:30,299 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 11:34:30,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:34:30,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353878653] [2022-11-20 11:34:30,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353878653] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:34:30,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:34:30,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:34:30,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336922701] [2022-11-20 11:34:30,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:34:30,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:34:30,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:34:30,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:34:30,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:34:30,309 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 189 [2022-11-20 11:34:30,310 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 214 transitions, 809 flow. Second operand has 7 states, 7 states have (on average 143.28571428571428) internal successors, (1003), 7 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states 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 11:34:30,311 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:34:30,311 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 189 [2022-11-20 11:34:30,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:34:31,277 INFO L130 PetriNetUnfolder]: 671/3835 cut-off events. [2022-11-20 11:34:31,278 INFO L131 PetriNetUnfolder]: For 1159/1218 co-relation queries the response was YES. [2022-11-20 11:34:31,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6593 conditions, 3835 events. 671/3835 cut-off events. For 1159/1218 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 32651 event pairs, 204 based on Foata normal form. 6/3584 useless extension candidates. Maximal degree in co-relation 5690. Up to 556 conditions per place. [2022-11-20 11:34:31,305 INFO L137 encePairwiseOnDemand]: 179/189 looper letters, 82 selfloop transitions, 15 changer transitions 1/230 dead transitions. [2022-11-20 11:34:31,305 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 230 transitions, 1050 flow [2022-11-20 11:34:31,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:34:31,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 11:34:31,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1172 transitions. [2022-11-20 11:34:31,311 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7751322751322751 [2022-11-20 11:34:31,311 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1172 transitions. [2022-11-20 11:34:31,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1172 transitions. [2022-11-20 11:34:31,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:34:31,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1172 transitions. [2022-11-20 11:34:31,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 146.5) internal successors, (1172), 8 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 11:34:31,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 189.0) internal successors, (1701), 9 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states 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 11:34:31,321 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 189.0) internal successors, (1701), 9 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states 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 11:34:31,321 INFO L175 Difference]: Start difference. First operand has 234 places, 214 transitions, 809 flow. Second operand 8 states and 1172 transitions. [2022-11-20 11:34:31,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 230 transitions, 1050 flow [2022-11-20 11:34:31,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 230 transitions, 1004 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-20 11:34:31,333 INFO L231 Difference]: Finished difference. Result has 233 places, 214 transitions, 796 flow [2022-11-20 11:34:31,333 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=763, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=796, PETRI_PLACES=233, PETRI_TRANSITIONS=214} [2022-11-20 11:34:31,334 INFO L288 CegarLoopForPetriNet]: 161 programPoint places, 72 predicate places. [2022-11-20 11:34:31,334 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 214 transitions, 796 flow [2022-11-20 11:34:31,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 143.28571428571428) internal successors, (1003), 7 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states 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 11:34:31,335 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:34:31,335 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:34:31,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:34:31,335 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 11:34:31,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:34:31,336 INFO L85 PathProgramCache]: Analyzing trace with hash 162224286, now seen corresponding path program 1 times [2022-11-20 11:34:31,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:34:31,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728683529] [2022-11-20 11:34:31,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:34:31,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:34:31,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:34:31,521 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 11:34:31,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:34:31,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728683529] [2022-11-20 11:34:31,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728683529] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:34:31,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:34:31,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:34:31,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789764326] [2022-11-20 11:34:31,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:34:31,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:34:31,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:34:31,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:34:31,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:34:31,525 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 189 [2022-11-20 11:34:31,526 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 214 transitions, 796 flow. Second operand has 7 states, 7 states have (on average 143.42857142857142) internal successors, (1004), 7 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states 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 11:34:31,527 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:34:31,527 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 189 [2022-11-20 11:34:31,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:34:32,424 INFO L130 PetriNetUnfolder]: 668/3346 cut-off events. [2022-11-20 11:34:32,424 INFO L131 PetriNetUnfolder]: For 1477/1535 co-relation queries the response was YES. [2022-11-20 11:34:32,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6011 conditions, 3346 events. 668/3346 cut-off events. For 1477/1535 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 27736 event pairs, 228 based on Foata normal form. 3/3135 useless extension candidates. Maximal degree in co-relation 5113. Up to 622 conditions per place. [2022-11-20 11:34:32,448 INFO L137 encePairwiseOnDemand]: 179/189 looper letters, 76 selfloop transitions, 14 changer transitions 6/228 dead transitions. [2022-11-20 11:34:32,449 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 228 transitions, 1027 flow [2022-11-20 11:34:32,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:34:32,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 11:34:32,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1170 transitions. [2022-11-20 11:34:32,453 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7738095238095238 [2022-11-20 11:34:32,453 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1170 transitions. [2022-11-20 11:34:32,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1170 transitions. [2022-11-20 11:34:32,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:34:32,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1170 transitions. [2022-11-20 11:34:32,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 146.25) internal successors, (1170), 8 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states 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 11:34:32,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 189.0) internal successors, (1701), 9 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states 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 11:34:32,463 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 189.0) internal successors, (1701), 9 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states 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 11:34:32,463 INFO L175 Difference]: Start difference. First operand has 233 places, 214 transitions, 796 flow. Second operand 8 states and 1170 transitions. [2022-11-20 11:34:32,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 228 transitions, 1027 flow [2022-11-20 11:34:32,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 228 transitions, 998 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-20 11:34:32,475 INFO L231 Difference]: Finished difference. Result has 235 places, 213 transitions, 792 flow [2022-11-20 11:34:32,476 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=767, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=792, PETRI_PLACES=235, PETRI_TRANSITIONS=213} [2022-11-20 11:34:32,477 INFO L288 CegarLoopForPetriNet]: 161 programPoint places, 74 predicate places. [2022-11-20 11:34:32,477 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 213 transitions, 792 flow [2022-11-20 11:34:32,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 143.42857142857142) internal successors, (1004), 7 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states 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 11:34:32,478 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:34:32,478 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:34:32,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 11:34:32,479 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 11:34:32,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:34:32,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1027692090, now seen corresponding path program 1 times [2022-11-20 11:34:32,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:34:32,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056084853] [2022-11-20 11:34:32,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:34:32,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:34:32,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:34:32,878 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:34:32,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:34:32,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056084853] [2022-11-20 11:34:32,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056084853] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:34:32,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597510931] [2022-11-20 11:34:32,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:34:32,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:34:32,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:34:32,881 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:34:32,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:34:33,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:34:33,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 11:34:33,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:34:33,564 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:34:33,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:34:34,007 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:34:34,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597510931] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:34:34,008 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:34:34,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-11-20 11:34:34,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058905650] [2022-11-20 11:34:34,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:34:34,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-20 11:34:34,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:34:34,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-20 11:34:34,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=640, Unknown=0, NotChecked=0, Total=756 [2022-11-20 11:34:34,013 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 189 [2022-11-20 11:34:34,017 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 213 transitions, 792 flow. Second operand has 28 states, 28 states have (on average 126.25) internal successors, (3535), 28 states have internal predecessors, (3535), 0 states have call successors, (0), 0 states 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 11:34:34,017 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:34:34,017 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 189 [2022-11-20 11:34:34,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:34:37,558 INFO L130 PetriNetUnfolder]: 1220/5867 cut-off events. [2022-11-20 11:34:37,559 INFO L131 PetriNetUnfolder]: For 2548/2644 co-relation queries the response was YES. [2022-11-20 11:34:37,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11297 conditions, 5867 events. 1220/5867 cut-off events. For 2548/2644 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 56967 event pairs, 291 based on Foata normal form. 48/5505 useless extension candidates. Maximal degree in co-relation 9344. Up to 736 conditions per place. [2022-11-20 11:34:37,598 INFO L137 encePairwiseOnDemand]: 163/189 looper letters, 202 selfloop transitions, 90 changer transitions 29/425 dead transitions. [2022-11-20 11:34:37,598 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 425 transitions, 2290 flow [2022-11-20 11:34:37,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-11-20 11:34:37,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2022-11-20 11:34:37,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 7447 transitions. [2022-11-20 11:34:37,612 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6678324813918034 [2022-11-20 11:34:37,612 INFO L72 ComplementDD]: Start complementDD. Operand 59 states and 7447 transitions. [2022-11-20 11:34:37,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 7447 transitions. [2022-11-20 11:34:37,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:34:37,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 59 states and 7447 transitions. [2022-11-20 11:34:37,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 60 states, 59 states have (on average 126.22033898305085) internal successors, (7447), 59 states have internal predecessors, (7447), 0 states have call successors, (0), 0 states 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 11:34:37,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 60 states, 60 states have (on average 189.0) internal successors, (11340), 60 states have internal predecessors, (11340), 0 states have call successors, (0), 0 states 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 11:34:37,652 INFO L81 ComplementDD]: Finished complementDD. Result has 60 states, 60 states have (on average 189.0) internal successors, (11340), 60 states have internal predecessors, (11340), 0 states have call successors, (0), 0 states 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 11:34:37,652 INFO L175 Difference]: Start difference. First operand has 235 places, 213 transitions, 792 flow. Second operand 59 states and 7447 transitions. [2022-11-20 11:34:37,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 425 transitions, 2290 flow [2022-11-20 11:34:37,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 425 transitions, 2208 flow, removed 21 selfloop flow, removed 8 redundant places. [2022-11-20 11:34:37,670 INFO L231 Difference]: Finished difference. Result has 289 places, 258 transitions, 1182 flow [2022-11-20 11:34:37,671 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=1182, PETRI_PLACES=289, PETRI_TRANSITIONS=258} [2022-11-20 11:34:37,672 INFO L288 CegarLoopForPetriNet]: 161 programPoint places, 128 predicate places. [2022-11-20 11:34:37,672 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 258 transitions, 1182 flow [2022-11-20 11:34:37,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 126.25) internal successors, (3535), 28 states have internal predecessors, (3535), 0 states have call successors, (0), 0 states 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 11:34:37,673 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:34:37,673 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:34:37,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:34:37,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:34:37,880 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 11:34:37,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:34:37,880 INFO L85 PathProgramCache]: Analyzing trace with hash 2115874665, now seen corresponding path program 1 times [2022-11-20 11:34:37,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:34:37,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681095059] [2022-11-20 11:34:37,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:34:37,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:34:37,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:34:38,298 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:34:38,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:34:38,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681095059] [2022-11-20 11:34:38,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681095059] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:34:38,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951749419] [2022-11-20 11:34:38,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:34:38,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:34:38,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:34:38,300 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:34:38,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 11:34:38,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:34:38,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 11:34:38,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:34:38,990 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:34:38,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:34:39,457 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:34:39,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951749419] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:34:39,458 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:34:39,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-11-20 11:34:39,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128781965] [2022-11-20 11:34:39,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:34:39,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-20 11:34:39,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:34:39,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-20 11:34:39,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=640, Unknown=0, NotChecked=0, Total=756 [2022-11-20 11:34:39,468 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 189 [2022-11-20 11:34:39,473 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 258 transitions, 1182 flow. Second operand has 28 states, 28 states have (on average 126.89285714285714) internal successors, (3553), 28 states have internal predecessors, (3553), 0 states have call successors, (0), 0 states 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 11:34:39,473 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:34:39,473 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 189 [2022-11-20 11:34:39,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:34:42,855 INFO L130 PetriNetUnfolder]: 1187/4955 cut-off events. [2022-11-20 11:34:42,855 INFO L131 PetriNetUnfolder]: For 6418/6534 co-relation queries the response was YES. [2022-11-20 11:34:42,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10669 conditions, 4955 events. 1187/4955 cut-off events. For 6418/6534 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 46471 event pairs, 358 based on Foata normal form. 69/4677 useless extension candidates. Maximal degree in co-relation 8774. Up to 816 conditions per place. [2022-11-20 11:34:42,898 INFO L137 encePairwiseOnDemand]: 163/189 looper letters, 151 selfloop transitions, 63 changer transitions 104/422 dead transitions. [2022-11-20 11:34:42,898 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 422 transitions, 2476 flow [2022-11-20 11:34:42,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-20 11:34:42,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2022-11-20 11:34:43,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 7069 transitions. [2022-11-20 11:34:43,061 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6678949357520786 [2022-11-20 11:34:43,069 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 7069 transitions. [2022-11-20 11:34:43,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 7069 transitions. [2022-11-20 11:34:43,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:34:43,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 7069 transitions. [2022-11-20 11:34:43,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 126.23214285714286) internal successors, (7069), 56 states have internal predecessors, (7069), 0 states have call successors, (0), 0 states 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 11:34:43,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 189.0) internal successors, (10773), 57 states have internal predecessors, (10773), 0 states have call successors, (0), 0 states 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 11:34:43,101 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 189.0) internal successors, (10773), 57 states have internal predecessors, (10773), 0 states have call successors, (0), 0 states 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 11:34:43,101 INFO L175 Difference]: Start difference. First operand has 289 places, 258 transitions, 1182 flow. Second operand 56 states and 7069 transitions. [2022-11-20 11:34:43,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 422 transitions, 2476 flow [2022-11-20 11:34:43,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 422 transitions, 2372 flow, removed 13 selfloop flow, removed 19 redundant places. [2022-11-20 11:34:43,124 INFO L231 Difference]: Finished difference. Result has 335 places, 245 transitions, 1153 flow [2022-11-20 11:34:43,125 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=1094, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=1153, PETRI_PLACES=335, PETRI_TRANSITIONS=245} [2022-11-20 11:34:43,126 INFO L288 CegarLoopForPetriNet]: 161 programPoint places, 174 predicate places. [2022-11-20 11:34:43,126 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 245 transitions, 1153 flow [2022-11-20 11:34:43,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 126.89285714285714) internal successors, (3553), 28 states have internal predecessors, (3553), 0 states have call successors, (0), 0 states 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 11:34:43,127 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:34:43,128 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:34:43,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 11:34:43,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:34:43,340 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 11:34:43,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:34:43,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1895009167, now seen corresponding path program 1 times [2022-11-20 11:34:43,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:34:43,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31862276] [2022-11-20 11:34:43,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:34:43,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:34:43,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:34:43,755 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:34:43,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:34:43,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31862276] [2022-11-20 11:34:43,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31862276] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:34:43,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702579065] [2022-11-20 11:34:43,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:34:43,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:34:43,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:34:43,758 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:34:43,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 11:34:43,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:34:43,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 11:34:43,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:34:43,982 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:34:43,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:34:44,308 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:34:44,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702579065] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:34:44,308 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:34:44,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-11-20 11:34:44,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828144834] [2022-11-20 11:34:44,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:34:44,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-20 11:34:44,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:34:44,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-20 11:34:44,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2022-11-20 11:34:44,314 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 189 [2022-11-20 11:34:44,319 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 245 transitions, 1153 flow. Second operand has 32 states, 32 states have (on average 154.28125) internal successors, (4937), 32 states have internal predecessors, (4937), 0 states have call successors, (0), 0 states 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 11:34:44,319 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:34:44,319 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 189 [2022-11-20 11:34:44,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:34:45,976 INFO L130 PetriNetUnfolder]: 94/2776 cut-off events. [2022-11-20 11:34:45,976 INFO L131 PetriNetUnfolder]: For 2407/2420 co-relation queries the response was YES. [2022-11-20 11:34:45,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5155 conditions, 2776 events. 94/2776 cut-off events. For 2407/2420 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 19159 event pairs, 0 based on Foata normal form. 24/2748 useless extension candidates. Maximal degree in co-relation 4661. Up to 98 conditions per place. [2022-11-20 11:34:45,997 INFO L137 encePairwiseOnDemand]: 177/189 looper letters, 224 selfloop transitions, 136 changer transitions 0/503 dead transitions. [2022-11-20 11:34:45,997 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 503 transitions, 3152 flow [2022-11-20 11:34:45,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-20 11:34:45,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-20 11:34:46,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 6946 transitions. [2022-11-20 11:34:46,011 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8352573352573353 [2022-11-20 11:34:46,012 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 6946 transitions. [2022-11-20 11:34:46,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 6946 transitions. [2022-11-20 11:34:46,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:34:46,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 6946 transitions. [2022-11-20 11:34:46,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 157.86363636363637) internal successors, (6946), 44 states have internal predecessors, (6946), 0 states have call successors, (0), 0 states 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 11:34:46,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 189.0) internal successors, (8505), 45 states have internal predecessors, (8505), 0 states have call successors, (0), 0 states 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 11:34:46,103 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 189.0) internal successors, (8505), 45 states have internal predecessors, (8505), 0 states have call successors, (0), 0 states 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 11:34:46,103 INFO L175 Difference]: Start difference. First operand has 335 places, 245 transitions, 1153 flow. Second operand 44 states and 6946 transitions. [2022-11-20 11:34:46,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 503 transitions, 3152 flow [2022-11-20 11:34:46,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 503 transitions, 2934 flow, removed 17 selfloop flow, removed 50 redundant places. [2022-11-20 11:34:46,122 INFO L231 Difference]: Finished difference. Result has 311 places, 321 transitions, 1891 flow [2022-11-20 11:34:46,123 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=1011, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=1891, PETRI_PLACES=311, PETRI_TRANSITIONS=321} [2022-11-20 11:34:46,123 INFO L288 CegarLoopForPetriNet]: 161 programPoint places, 150 predicate places. [2022-11-20 11:34:46,124 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 321 transitions, 1891 flow [2022-11-20 11:34:46,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 154.28125) internal successors, (4937), 32 states have internal predecessors, (4937), 0 states have call successors, (0), 0 states 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 11:34:46,125 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:34:46,126 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:34:46,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 11:34:46,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 11:34:46,332 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 11:34:46,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:34:46,332 INFO L85 PathProgramCache]: Analyzing trace with hash 132683149, now seen corresponding path program 2 times [2022-11-20 11:34:46,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:34:46,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294894558] [2022-11-20 11:34:46,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:34:46,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:34:46,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:34:46,491 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 11:34:46,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:34:46,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294894558] [2022-11-20 11:34:46,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294894558] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:34:46,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300052674] [2022-11-20 11:34:46,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:34:46,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:34:46,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:34:46,493 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:34:46,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 11:34:46,611 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:34:46,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:34:46,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:34:46,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:34:46,795 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-20 11:34:46,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:34:46,979 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-20 11:34:46,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300052674] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:34:46,980 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:34:46,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-11-20 11:34:46,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160857154] [2022-11-20 11:34:46,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:34:46,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:34:46,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:34:46,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:34:46,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:34:46,982 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 189 [2022-11-20 11:34:46,984 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 321 transitions, 1891 flow. Second operand has 10 states, 10 states have (on average 158.2) internal successors, (1582), 10 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states 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 11:34:46,984 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:34:46,984 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 189 [2022-11-20 11:34:46,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:34:49,500 INFO L130 PetriNetUnfolder]: 2759/11486 cut-off events. [2022-11-20 11:34:49,501 INFO L131 PetriNetUnfolder]: For 5929/6072 co-relation queries the response was YES. [2022-11-20 11:34:49,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23086 conditions, 11486 events. 2759/11486 cut-off events. For 5929/6072 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 114999 event pairs, 390 based on Foata normal form. 156/11016 useless extension candidates. Maximal degree in co-relation 22488. Up to 1144 conditions per place. [2022-11-20 11:34:49,577 INFO L137 encePairwiseOnDemand]: 179/189 looper letters, 58 selfloop transitions, 15 changer transitions 0/368 dead transitions. [2022-11-20 11:34:49,577 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 368 transitions, 2206 flow [2022-11-20 11:34:49,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:34:49,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-20 11:34:49,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2231 transitions. [2022-11-20 11:34:49,582 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8431594860166288 [2022-11-20 11:34:49,582 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2231 transitions. [2022-11-20 11:34:49,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2231 transitions. [2022-11-20 11:34:49,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:34:49,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2231 transitions. [2022-11-20 11:34:49,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 159.35714285714286) internal successors, (2231), 14 states have internal predecessors, (2231), 0 states have call successors, (0), 0 states 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 11:34:49,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 189.0) internal successors, (2835), 15 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states 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 11:34:49,591 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 189.0) internal successors, (2835), 15 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states 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 11:34:49,591 INFO L175 Difference]: Start difference. First operand has 311 places, 321 transitions, 1891 flow. Second operand 14 states and 2231 transitions. [2022-11-20 11:34:49,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 368 transitions, 2206 flow [2022-11-20 11:34:49,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 368 transitions, 2109 flow, removed 1 selfloop flow, removed 15 redundant places. [2022-11-20 11:34:49,621 INFO L231 Difference]: Finished difference. Result has 310 places, 325 transitions, 1851 flow [2022-11-20 11:34:49,622 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=1790, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1851, PETRI_PLACES=310, PETRI_TRANSITIONS=325} [2022-11-20 11:34:49,623 INFO L288 CegarLoopForPetriNet]: 161 programPoint places, 149 predicate places. [2022-11-20 11:34:49,623 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 325 transitions, 1851 flow [2022-11-20 11:34:49,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 158.2) internal successors, (1582), 10 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states 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 11:34:49,624 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:34:49,624 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:34:49,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 11:34:49,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-20 11:34:49,830 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 11:34:49,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:34:49,830 INFO L85 PathProgramCache]: Analyzing trace with hash -181789190, now seen corresponding path program 1 times [2022-11-20 11:34:49,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:34:49,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560678570] [2022-11-20 11:34:49,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:34:49,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:34:49,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:34:49,976 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 11:34:49,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:34:49,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560678570] [2022-11-20 11:34:49,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560678570] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:34:49,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858582242] [2022-11-20 11:34:49,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:34:49,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:34:49,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:34:49,979 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:34:49,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 11:34:50,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:34:50,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:34:50,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:34:50,339 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 11:34:50,340 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:34:50,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858582242] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:34:50,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:34:50,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 11:34:50,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934995485] [2022-11-20 11:34:50,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:34:50,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:34:50,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:34:50,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:34:50,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:34:50,343 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 189 [2022-11-20 11:34:50,344 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 325 transitions, 1851 flow. Second operand has 6 states, 6 states have (on average 164.66666666666666) internal successors, (988), 6 states have internal predecessors, (988), 0 states have call successors, (0), 0 states 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 11:34:50,344 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:34:50,344 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 189 [2022-11-20 11:34:50,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:34:51,366 INFO L130 PetriNetUnfolder]: 549/4284 cut-off events. [2022-11-20 11:34:51,366 INFO L131 PetriNetUnfolder]: For 2412/2477 co-relation queries the response was YES. [2022-11-20 11:34:51,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8700 conditions, 4284 events. 549/4284 cut-off events. For 2412/2477 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 34795 event pairs, 78 based on Foata normal form. 52/4152 useless extension candidates. Maximal degree in co-relation 8262. Up to 533 conditions per place. [2022-11-20 11:34:51,397 INFO L137 encePairwiseOnDemand]: 184/189 looper letters, 23 selfloop transitions, 8 changer transitions 0/334 dead transitions. [2022-11-20 11:34:51,398 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 334 transitions, 1937 flow [2022-11-20 11:34:51,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:34:51,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:34:51,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1162 transitions. [2022-11-20 11:34:51,401 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8783068783068783 [2022-11-20 11:34:51,401 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1162 transitions. [2022-11-20 11:34:51,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1162 transitions. [2022-11-20 11:34:51,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:34:51,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1162 transitions. [2022-11-20 11:34:51,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states 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 11:34:51,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 189.0) internal successors, (1512), 8 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states 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 11:34:51,409 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 189.0) internal successors, (1512), 8 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states 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 11:34:51,409 INFO L175 Difference]: Start difference. First operand has 310 places, 325 transitions, 1851 flow. Second operand 7 states and 1162 transitions. [2022-11-20 11:34:51,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 334 transitions, 1937 flow [2022-11-20 11:34:51,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 334 transitions, 1896 flow, removed 8 selfloop flow, removed 11 redundant places. [2022-11-20 11:34:51,434 INFO L231 Difference]: Finished difference. Result has 304 places, 323 transitions, 1813 flow [2022-11-20 11:34:51,435 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=1797, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1813, PETRI_PLACES=304, PETRI_TRANSITIONS=323} [2022-11-20 11:34:51,437 INFO L288 CegarLoopForPetriNet]: 161 programPoint places, 143 predicate places. [2022-11-20 11:34:51,437 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 323 transitions, 1813 flow [2022-11-20 11:34:51,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 164.66666666666666) internal successors, (988), 6 states have internal predecessors, (988), 0 states have call successors, (0), 0 states 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 11:34:51,437 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:34:51,438 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:34:51,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 11:34:51,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-20 11:34:51,644 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 11:34:51,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:34:51,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1052697724, now seen corresponding path program 2 times [2022-11-20 11:34:51,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:34:51,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696164093] [2022-11-20 11:34:51,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:34:51,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:34:51,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:34:51,801 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 11:34:51,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:34:51,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696164093] [2022-11-20 11:34:51,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696164093] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:34:51,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824876587] [2022-11-20 11:34:51,803 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:34:51,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:34:51,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:34:51,805 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:34:51,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 11:34:51,922 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:34:51,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:34:51,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:34:51,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:34:52,122 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-20 11:34:52,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:34:52,346 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-20 11:34:52,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824876587] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:34:52,346 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:34:52,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-11-20 11:34:52,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51138822] [2022-11-20 11:34:52,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:34:52,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:34:52,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:34:52,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:34:52,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:34:52,350 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 189 [2022-11-20 11:34:52,352 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 323 transitions, 1813 flow. Second operand has 10 states, 10 states have (on average 158.4) internal successors, (1584), 10 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states 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 11:34:52,352 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:34:52,352 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 189 [2022-11-20 11:34:52,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:34:56,120 INFO L130 PetriNetUnfolder]: 5632/17752 cut-off events. [2022-11-20 11:34:56,121 INFO L131 PetriNetUnfolder]: For 13394/13836 co-relation queries the response was YES. [2022-11-20 11:34:56,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37755 conditions, 17752 events. 5632/17752 cut-off events. For 13394/13836 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 190424 event pairs, 741 based on Foata normal form. 611/17230 useless extension candidates. Maximal degree in co-relation 37166. Up to 1915 conditions per place. [2022-11-20 11:34:56,286 INFO L137 encePairwiseOnDemand]: 179/189 looper letters, 65 selfloop transitions, 15 changer transitions 0/376 dead transitions. [2022-11-20 11:34:56,286 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 376 transitions, 2187 flow [2022-11-20 11:34:56,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:34:56,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-20 11:34:56,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2228 transitions. [2022-11-20 11:34:56,290 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8420256991685563 [2022-11-20 11:34:56,290 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2228 transitions. [2022-11-20 11:34:56,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2228 transitions. [2022-11-20 11:34:56,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:34:56,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2228 transitions. [2022-11-20 11:34:56,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 159.14285714285714) internal successors, (2228), 14 states have internal predecessors, (2228), 0 states have call successors, (0), 0 states 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 11:34:56,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 189.0) internal successors, (2835), 15 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states 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 11:34:56,300 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 189.0) internal successors, (2835), 15 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states 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 11:34:56,300 INFO L175 Difference]: Start difference. First operand has 304 places, 323 transitions, 1813 flow. Second operand 14 states and 2228 transitions. [2022-11-20 11:34:56,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 376 transitions, 2187 flow [2022-11-20 11:34:56,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 376 transitions, 2171 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-20 11:34:56,343 INFO L231 Difference]: Finished difference. Result has 312 places, 327 transitions, 1854 flow [2022-11-20 11:34:56,343 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=1793, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1854, PETRI_PLACES=312, PETRI_TRANSITIONS=327} [2022-11-20 11:34:56,344 INFO L288 CegarLoopForPetriNet]: 161 programPoint places, 151 predicate places. [2022-11-20 11:34:56,344 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 327 transitions, 1854 flow [2022-11-20 11:34:56,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 158.4) internal successors, (1584), 10 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states 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 11:34:56,345 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:34:56,345 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:34:56,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 11:34:56,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 11:34:56,552 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 11:34:56,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:34:56,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1726108417, now seen corresponding path program 1 times [2022-11-20 11:34:56,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:34:56,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479717641] [2022-11-20 11:34:56,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:34:56,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:34:56,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:34:56,684 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 11:34:56,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:34:56,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479717641] [2022-11-20 11:34:56,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479717641] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:34:56,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730971123] [2022-11-20 11:34:56,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:34:56,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:34:56,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:34:56,687 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:34:56,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 11:34:56,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:34:56,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:34:56,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:34:57,028 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 11:34:57,029 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:34:57,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730971123] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:34:57,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:34:57,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 11:34:57,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743421536] [2022-11-20 11:34:57,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:34:57,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:34:57,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:34:57,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:34:57,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:34:57,032 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 189 [2022-11-20 11:34:57,033 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 327 transitions, 1854 flow. Second operand has 6 states, 6 states have (on average 164.83333333333334) internal successors, (989), 6 states have internal predecessors, (989), 0 states have call successors, (0), 0 states 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 11:34:57,033 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:34:57,034 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 189 [2022-11-20 11:34:57,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:34:58,823 INFO L130 PetriNetUnfolder]: 1810/7768 cut-off events. [2022-11-20 11:34:58,824 INFO L131 PetriNetUnfolder]: For 5375/5414 co-relation queries the response was YES. [2022-11-20 11:34:58,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14978 conditions, 7768 events. 1810/7768 cut-off events. For 5375/5414 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 85762 event pairs, 234 based on Foata normal form. 130/6622 useless extension candidates. Maximal degree in co-relation 14390. Up to 1560 conditions per place. [2022-11-20 11:34:58,874 INFO L137 encePairwiseOnDemand]: 184/189 looper letters, 0 selfloop transitions, 1 changer transitions 84/335 dead transitions. [2022-11-20 11:34:58,875 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 335 transitions, 1931 flow [2022-11-20 11:34:58,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:34:58,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:34:58,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1161 transitions. [2022-11-20 11:34:58,878 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8775510204081632 [2022-11-20 11:34:58,879 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1161 transitions. [2022-11-20 11:34:58,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1161 transitions. [2022-11-20 11:34:58,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:34:58,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1161 transitions. [2022-11-20 11:34:58,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 165.85714285714286) internal successors, (1161), 7 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states 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 11:34:58,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 189.0) internal successors, (1512), 8 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states 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 11:34:58,885 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 189.0) internal successors, (1512), 8 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states 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 11:34:58,885 INFO L175 Difference]: Start difference. First operand has 312 places, 327 transitions, 1854 flow. Second operand 7 states and 1161 transitions. [2022-11-20 11:34:58,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 335 transitions, 1931 flow [2022-11-20 11:34:58,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 335 transitions, 1890 flow, removed 8 selfloop flow, removed 11 redundant places. [2022-11-20 11:34:58,920 INFO L231 Difference]: Finished difference. Result has 306 places, 251 transitions, 1592 flow [2022-11-20 11:34:58,921 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=1800, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1592, PETRI_PLACES=306, PETRI_TRANSITIONS=251} [2022-11-20 11:34:58,921 INFO L288 CegarLoopForPetriNet]: 161 programPoint places, 145 predicate places. [2022-11-20 11:34:58,922 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 251 transitions, 1592 flow [2022-11-20 11:34:58,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 164.83333333333334) internal successors, (989), 6 states have internal predecessors, (989), 0 states have call successors, (0), 0 states 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 11:34:58,922 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:34:58,923 INFO L209 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:34:58,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 11:34:59,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:34:59,133 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 11:34:59,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:34:59,134 INFO L85 PathProgramCache]: Analyzing trace with hash -218877711, now seen corresponding path program 2 times [2022-11-20 11:34:59,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:34:59,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385310783] [2022-11-20 11:34:59,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:34:59,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:34:59,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:00,265 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:35:00,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:35:00,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385310783] [2022-11-20 11:35:00,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385310783] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:35:00,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759910931] [2022-11-20 11:35:00,266 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:35:00,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:35:00,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:35:00,267 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:35:00,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 11:35:00,377 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:35:00,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:35:00,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 11:35:00,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:35:00,725 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2022-11-20 11:35:00,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:35:01,059 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2022-11-20 11:35:01,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759910931] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:35:01,060 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:35:01,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 7, 7] total 37 [2022-11-20 11:35:01,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030389981] [2022-11-20 11:35:01,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:35:01,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-20 11:35:01,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:35:01,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-20 11:35:01,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=1093, Unknown=0, NotChecked=0, Total=1406 [2022-11-20 11:35:01,066 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 189 [2022-11-20 11:35:01,069 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 251 transitions, 1592 flow. Second operand has 38 states, 38 states have (on average 135.97368421052633) internal successors, (5167), 38 states have internal predecessors, (5167), 0 states have call successors, (0), 0 states 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 11:35:01,070 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:35:01,070 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 189 [2022-11-20 11:35:01,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:35:04,749 INFO L130 PetriNetUnfolder]: 18/855 cut-off events. [2022-11-20 11:35:04,749 INFO L131 PetriNetUnfolder]: For 1924/1924 co-relation queries the response was YES. [2022-11-20 11:35:04,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2484 conditions, 855 events. 18/855 cut-off events. For 1924/1924 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 2607 event pairs, 0 based on Foata normal form. 6/859 useless extension candidates. Maximal degree in co-relation 2455. Up to 82 conditions per place. [2022-11-20 11:35:04,751 INFO L137 encePairwiseOnDemand]: 171/189 looper letters, 0 selfloop transitions, 0 changer transitions 431/431 dead transitions. [2022-11-20 11:35:04,751 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 431 transitions, 3171 flow [2022-11-20 11:35:04,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2022-11-20 11:35:04,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2022-11-20 11:35:04,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 15877 transitions. [2022-11-20 11:35:04,770 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7119092458075509 [2022-11-20 11:35:04,770 INFO L72 ComplementDD]: Start complementDD. Operand 118 states and 15877 transitions. [2022-11-20 11:35:04,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 118 states and 15877 transitions. [2022-11-20 11:35:04,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:35:04,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 118 states and 15877 transitions. [2022-11-20 11:35:04,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 119 states, 118 states have (on average 134.55084745762713) internal successors, (15877), 118 states have internal predecessors, (15877), 0 states have call successors, (0), 0 states 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 11:35:04,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 119 states, 119 states have (on average 189.0) internal successors, (22491), 119 states have internal predecessors, (22491), 0 states have call successors, (0), 0 states 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 11:35:04,822 INFO L81 ComplementDD]: Finished complementDD. Result has 119 states, 119 states have (on average 189.0) internal successors, (22491), 119 states have internal predecessors, (22491), 0 states have call successors, (0), 0 states 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 11:35:04,823 INFO L175 Difference]: Start difference. First operand has 306 places, 251 transitions, 1592 flow. Second operand 118 states and 15877 transitions. [2022-11-20 11:35:04,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 431 transitions, 3171 flow [2022-11-20 11:35:04,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 431 transitions, 2981 flow, removed 0 selfloop flow, removed 23 redundant places. [2022-11-20 11:35:04,841 INFO L231 Difference]: Finished difference. Result has 324 places, 0 transitions, 0 flow [2022-11-20 11:35:04,841 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=1414, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=118, PETRI_FLOW=0, PETRI_PLACES=324, PETRI_TRANSITIONS=0} [2022-11-20 11:35:04,842 INFO L288 CegarLoopForPetriNet]: 161 programPoint places, 163 predicate places. [2022-11-20 11:35:04,842 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 0 transitions, 0 flow [2022-11-20 11:35:04,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 135.97368421052633) internal successors, (5167), 38 states have internal predecessors, (5167), 0 states have call successors, (0), 0 states 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 11:35:04,846 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 14 remaining) [2022-11-20 11:35:04,847 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 14 remaining) [2022-11-20 11:35:04,847 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2022-11-20 11:35:04,847 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2022-11-20 11:35:04,847 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 14 remaining) [2022-11-20 11:35:04,847 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 14 remaining) [2022-11-20 11:35:04,848 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 14 remaining) [2022-11-20 11:35:04,848 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 14 remaining) [2022-11-20 11:35:04,848 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 14 remaining) [2022-11-20 11:35:04,848 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 14 remaining) [2022-11-20 11:35:04,848 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2022-11-20 11:35:04,849 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2022-11-20 11:35:04,849 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2022-11-20 11:35:04,849 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2022-11-20 11:35:04,857 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-11-20 11:35:05,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-20 11:35:05,055 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:35:05,060 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-20 11:35:05,060 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 11:35:05,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:35:05 BasicIcfg [2022-11-20 11:35:05,066 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 11:35:05,066 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 11:35:05,066 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 11:35:05,067 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 11:35:05,067 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:34:20" (3/4) ... [2022-11-20 11:35:05,069 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 11:35:05,075 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-20 11:35:05,075 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-20 11:35:05,082 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2022-11-20 11:35:05,082 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-20 11:35:05,083 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 11:35:05,083 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 11:35:05,134 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 11:35:05,135 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 11:35:05,135 INFO L158 Benchmark]: Toolchain (without parser) took 45845.36ms. Allocated memory was 140.5MB in the beginning and 3.3GB in the end (delta: 3.2GB). Free memory was 112.6MB in the beginning and 2.4GB in the end (delta: -2.3GB). Peak memory consumption was 888.0MB. Max. memory is 16.1GB. [2022-11-20 11:35:05,136 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 113.2MB. Free memory is still 81.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:35:05,136 INFO L158 Benchmark]: CACSL2BoogieTranslator took 320.30ms. Allocated memory is still 140.5MB. Free memory was 112.6MB in the beginning and 101.3MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 11:35:05,136 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.20ms. Allocated memory is still 140.5MB. Free memory was 101.3MB in the beginning and 99.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:35:05,137 INFO L158 Benchmark]: Boogie Preprocessor took 29.40ms. Allocated memory is still 140.5MB. Free memory was 99.6MB in the beginning and 97.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:35:05,137 INFO L158 Benchmark]: RCFGBuilder took 608.31ms. Allocated memory is still 140.5MB. Free memory was 97.9MB in the beginning and 80.1MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-20 11:35:05,138 INFO L158 Benchmark]: TraceAbstraction took 44773.39ms. Allocated memory was 140.5MB in the beginning and 3.3GB in the end (delta: 3.2GB). Free memory was 79.4MB in the beginning and 2.4GB in the end (delta: -2.3GB). Peak memory consumption was 852.3MB. Max. memory is 16.1GB. [2022-11-20 11:35:05,138 INFO L158 Benchmark]: Witness Printer took 68.55ms. Allocated memory is still 3.3GB. Free memory was 2.4GB in the beginning and 2.4GB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:35:05,140 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 113.2MB. Free memory is still 81.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 320.30ms. Allocated memory is still 140.5MB. Free memory was 112.6MB in the beginning and 101.3MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.20ms. Allocated memory is still 140.5MB. Free memory was 101.3MB in the beginning and 99.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.40ms. Allocated memory is still 140.5MB. Free memory was 99.6MB in the beginning and 97.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 608.31ms. Allocated memory is still 140.5MB. Free memory was 97.9MB in the beginning and 80.1MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 44773.39ms. Allocated memory was 140.5MB in the beginning and 3.3GB in the end (delta: 3.2GB). Free memory was 79.4MB in the beginning and 2.4GB in the end (delta: -2.3GB). Peak memory consumption was 852.3MB. Max. memory is 16.1GB. * Witness Printer took 68.55ms. Allocated memory is still 3.3GB. Free memory was 2.4GB in the beginning and 2.4GB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 213 locations, 14 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 44.6s, OverallIterations: 18, TraceHistogramMax: 15, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 30.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5276 SdHoareTripleChecker+Valid, 3.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5276 mSDsluCounter, 1012 SdHoareTripleChecker+Invalid, 2.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 806 mSDsCounter, 426 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4137 IncrementalHoareTripleChecker+Invalid, 4563 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 426 mSolverCounterUnsat, 206 mSDtfsCounter, 4137 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2898 GetRequests, 2325 SyntacticMatches, 18 SemanticMatches, 555 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13879 ImplicationChecksByTransitivity, 10.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1891occurred in iteration=13, InterpolantAutomatonStates: 444, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 9.6s InterpolantComputationTime, 3429 NumberOfCodeBlocks, 3173 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 4415 ConstructedInterpolants, 0 QuantifiedInterpolants, 13623 SizeOfPredicates, 65 NumberOfNonLiveVariables, 2468 ConjunctsInSsa, 79 ConjunctsInUnsatCore, 37 InterpolantComputations, 10 PerfectInterpolantSequences, 2117/3886 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-20 11:35:05,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1a2d6d-ec00-40c1-b6e3-b11f9af7bfc7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE