./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1164b3d9-6948-4d21-846c-e326aabf2653/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1164b3d9-6948-4d21-846c-e326aabf2653/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_1164b3d9-6948-4d21-846c-e326aabf2653/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1164b3d9-6948-4d21-846c-e326aabf2653/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1164b3d9-6948-4d21-846c-e326aabf2653/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_1164b3d9-6948-4d21-846c-e326aabf2653/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 eecffe8522a4364afb75ce7fb01800caae42a8a3ed11b56f212b94255e6f04bc --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 10:57:30,760 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:57:30,763 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:57:30,804 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:57:30,805 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:57:30,809 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:57:30,812 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:57:30,817 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:57:30,819 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:57:30,825 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:57:30,827 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:57:30,830 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:57:30,831 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:57:30,834 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:57:30,835 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:57:30,840 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:57:30,842 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:57:30,843 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:57:30,845 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:57:30,852 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:57:30,854 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:57:30,857 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:57:30,858 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:57:30,859 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:57:30,868 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:57:30,868 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:57:30,869 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:57:30,871 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:57:30,871 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:57:30,873 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:57:30,874 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:57:30,874 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:57:30,876 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:57:30,878 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:57:30,879 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:57:30,880 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:57:30,880 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:57:30,881 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:57:30,881 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:57:30,882 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:57:30,882 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:57:30,883 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1164b3d9-6948-4d21-846c-e326aabf2653/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 10:57:30,905 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:57:30,906 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:57:30,906 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:57:30,907 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:57:30,907 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:57:30,908 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:57:30,908 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:57:30,909 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:57:30,909 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:57:30,909 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:57:30,910 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:57:30,910 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 10:57:30,910 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:57:30,910 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:57:30,911 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:57:30,911 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:57:30,911 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:57:30,911 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:57:30,912 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 10:57:30,912 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:57:30,912 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:57:30,912 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:57:30,913 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:57:30,913 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:57:30,913 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:57:30,913 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:57:30,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:57:30,914 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:57:30,914 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:57:30,915 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:57:30,915 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:57:30,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:57:30,915 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:57:30,916 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:57:30,916 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:57:30,916 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_1164b3d9-6948-4d21-846c-e326aabf2653/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1164b3d9-6948-4d21-846c-e326aabf2653/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eecffe8522a4364afb75ce7fb01800caae42a8a3ed11b56f212b94255e6f04bc [2022-11-20 10:57:31,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:57:31,203 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:57:31,206 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:57:31,207 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:57:31,208 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:57:31,209 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1164b3d9-6948-4d21-846c-e326aabf2653/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c [2022-11-20 10:57:34,218 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:57:34,416 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:57:34,420 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1164b3d9-6948-4d21-846c-e326aabf2653/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c [2022-11-20 10:57:34,429 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1164b3d9-6948-4d21-846c-e326aabf2653/bin/uautomizer-ug76WZFUDN/data/1eb1309a9/e1483fdf42064221ba344a524304bafa/FLAG562cf94ae [2022-11-20 10:57:34,453 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1164b3d9-6948-4d21-846c-e326aabf2653/bin/uautomizer-ug76WZFUDN/data/1eb1309a9/e1483fdf42064221ba344a524304bafa [2022-11-20 10:57:34,455 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:57:34,458 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:57:34,462 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:57:34,462 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:57:34,466 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:57:34,467 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:57:34" (1/1) ... [2022-11-20 10:57:34,468 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c3edbee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:34, skipping insertion in model container [2022-11-20 10:57:34,469 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:57:34" (1/1) ... [2022-11-20 10:57:34,478 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:57:34,503 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:57:34,681 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_1164b3d9-6948-4d21-846c-e326aabf2653/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c[2690,2703] [2022-11-20 10:57:34,692 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:57:34,702 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:57:34,725 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_1164b3d9-6948-4d21-846c-e326aabf2653/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c[2690,2703] [2022-11-20 10:57:34,728 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:57:34,743 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:57:34,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:34 WrapperNode [2022-11-20 10:57:34,743 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:57:34,744 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:57:34,745 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:57:34,745 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:57:34,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:34" (1/1) ... [2022-11-20 10:57:34,781 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:34" (1/1) ... [2022-11-20 10:57:34,820 INFO L138 Inliner]: procedures = 26, calls = 43, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 125 [2022-11-20 10:57:34,821 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:57:34,821 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:57:34,821 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:57:34,822 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:57:34,834 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:34" (1/1) ... [2022-11-20 10:57:34,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:34" (1/1) ... [2022-11-20 10:57:34,854 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:34" (1/1) ... [2022-11-20 10:57:34,855 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:34" (1/1) ... [2022-11-20 10:57:34,882 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:34" (1/1) ... [2022-11-20 10:57:34,887 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:34" (1/1) ... [2022-11-20 10:57:34,889 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:34" (1/1) ... [2022-11-20 10:57:34,890 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:34" (1/1) ... [2022-11-20 10:57:34,893 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:57:34,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:57:34,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:57:34,894 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:57:34,895 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:34" (1/1) ... [2022-11-20 10:57:34,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:57:34,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1164b3d9-6948-4d21-846c-e326aabf2653/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:34,956 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1164b3d9-6948-4d21-846c-e326aabf2653/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:34,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1164b3d9-6948-4d21-846c-e326aabf2653/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:57:35,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:57:35,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:57:35,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 10:57:35,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 10:57:35,005 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 10:57:35,005 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 10:57:35,005 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 10:57:35,006 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 10:57:35,006 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 10:57:35,006 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 10:57:35,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:57:35,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 10:57:35,007 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 10:57:35,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 10:57:35,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:57:35,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:57:35,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:57:35,009 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 10:57:35,147 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:57:35,149 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:57:35,568 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:57:35,608 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:57:35,611 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-20 10:57:35,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:57:35 BoogieIcfgContainer [2022-11-20 10:57:35,616 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:57:35,619 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:57:35,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:57:35,623 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:57:35,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:57:34" (1/3) ... [2022-11-20 10:57:35,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3814f49b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:57:35, skipping insertion in model container [2022-11-20 10:57:35,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:34" (2/3) ... [2022-11-20 10:57:35,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3814f49b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:57:35, skipping insertion in model container [2022-11-20 10:57:35,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:57:35" (3/3) ... [2022-11-20 10:57:35,629 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-simple-array-sum.wvr.c [2022-11-20 10:57:35,639 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 10:57:35,650 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:57:35,651 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-20 10:57:35,651 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 10:57:35,829 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 10:57:35,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 199 places, 205 transitions, 434 flow [2022-11-20 10:57:35,958 INFO L130 PetriNetUnfolder]: 16/202 cut-off events. [2022-11-20 10:57:35,958 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 10:57:35,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 202 events. 16/202 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 182 event pairs, 0 based on Foata normal form. 0/176 useless extension candidates. Maximal degree in co-relation 158. Up to 3 conditions per place. [2022-11-20 10:57:35,965 INFO L82 GeneralOperation]: Start removeDead. Operand has 199 places, 205 transitions, 434 flow [2022-11-20 10:57:35,971 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 176 places, 181 transitions, 377 flow [2022-11-20 10:57:35,982 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:57:35,989 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;@3af46a0b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:57:35,989 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-11-20 10:57:36,004 INFO L130 PetriNetUnfolder]: 3/59 cut-off events. [2022-11-20 10:57:36,005 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 10:57:36,005 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:57:36,006 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] [2022-11-20 10:57:36,006 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 10:57:36,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:36,012 INFO L85 PathProgramCache]: Analyzing trace with hash 202372782, now seen corresponding path program 1 times [2022-11-20 10:57:36,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:36,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553980298] [2022-11-20 10:57:36,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:36,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:36,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:36,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:57:36,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:36,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553980298] [2022-11-20 10:57:36,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553980298] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:57:36,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:57:36,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:57:36,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921584141] [2022-11-20 10:57:36,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:57:36,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:57:36,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:36,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:57:36,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:57:36,487 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 205 [2022-11-20 10:57:36,491 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 181 transitions, 377 flow. Second operand has 4 states, 4 states have (on average 163.5) internal successors, (654), 4 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:36,492 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:57:36,492 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 205 [2022-11-20 10:57:36,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:57:36,745 INFO L130 PetriNetUnfolder]: 37/396 cut-off events. [2022-11-20 10:57:36,745 INFO L131 PetriNetUnfolder]: For 56/56 co-relation queries the response was YES. [2022-11-20 10:57:36,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 526 conditions, 396 events. 37/396 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1353 event pairs, 14 based on Foata normal form. 46/386 useless extension candidates. Maximal degree in co-relation 277. Up to 52 conditions per place. [2022-11-20 10:57:36,751 INFO L137 encePairwiseOnDemand]: 183/205 looper letters, 46 selfloop transitions, 9 changer transitions 4/196 dead transitions. [2022-11-20 10:57:36,751 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 196 transitions, 532 flow [2022-11-20 10:57:36,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:57:36,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:57:36,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 883 transitions. [2022-11-20 10:57:36,774 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8614634146341463 [2022-11-20 10:57:36,775 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 883 transitions. [2022-11-20 10:57:36,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 883 transitions. [2022-11-20 10:57:36,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:57:36,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 883 transitions. [2022-11-20 10:57:36,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 176.6) internal successors, (883), 5 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:36,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:36,803 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:36,804 INFO L175 Difference]: Start difference. First operand has 176 places, 181 transitions, 377 flow. Second operand 5 states and 883 transitions. [2022-11-20 10:57:36,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 196 transitions, 532 flow [2022-11-20 10:57:36,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 196 transitions, 514 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 10:57:36,815 INFO L231 Difference]: Finished difference. Result has 178 places, 175 transitions, 409 flow [2022-11-20 10:57:36,817 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=409, PETRI_PLACES=178, PETRI_TRANSITIONS=175} [2022-11-20 10:57:36,821 INFO L288 CegarLoopForPetriNet]: 176 programPoint places, 2 predicate places. [2022-11-20 10:57:36,822 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 175 transitions, 409 flow [2022-11-20 10:57:36,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 163.5) internal successors, (654), 4 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:36,822 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:57:36,823 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:57:36,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:57:36,824 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 10:57:36,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:36,824 INFO L85 PathProgramCache]: Analyzing trace with hash -623107824, now seen corresponding path program 1 times [2022-11-20 10:57:36,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:36,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347069216] [2022-11-20 10:57:36,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:36,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:36,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:37,051 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:57:37,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:37,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347069216] [2022-11-20 10:57:37,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347069216] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:57:37,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782523227] [2022-11-20 10:57:37,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:37,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:57:37,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1164b3d9-6948-4d21-846c-e326aabf2653/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:37,056 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1164b3d9-6948-4d21-846c-e326aabf2653/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:57:37,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1164b3d9-6948-4d21-846c-e326aabf2653/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:57:37,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:37,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:57:37,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:57:37,333 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:57:37,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:57:37,400 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:57:37,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782523227] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:57:37,401 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:57:37,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-20 10:57:37,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100273379] [2022-11-20 10:57:37,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:57:37,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:57:37,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:37,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:57:37,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:57:37,408 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 205 [2022-11-20 10:57:37,411 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 175 transitions, 409 flow. Second operand has 12 states, 12 states have (on average 164.66666666666666) internal successors, (1976), 12 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:37,411 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:57:37,411 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 205 [2022-11-20 10:57:37,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:57:37,977 INFO L130 PetriNetUnfolder]: 91/885 cut-off events. [2022-11-20 10:57:37,977 INFO L131 PetriNetUnfolder]: For 67/67 co-relation queries the response was YES. [2022-11-20 10:57:37,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1199 conditions, 885 events. 91/885 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 4601 event pairs, 35 based on Foata normal form. 6/771 useless extension candidates. Maximal degree in co-relation 764. Up to 45 conditions per place. [2022-11-20 10:57:38,016 INFO L137 encePairwiseOnDemand]: 190/205 looper letters, 91 selfloop transitions, 40 changer transitions 0/268 dead transitions. [2022-11-20 10:57:38,016 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 268 transitions, 931 flow [2022-11-20 10:57:38,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 10:57:38,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 10:57:38,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3053 transitions. [2022-11-20 10:57:38,031 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8273712737127371 [2022-11-20 10:57:38,032 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3053 transitions. [2022-11-20 10:57:38,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3053 transitions. [2022-11-20 10:57:38,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:57:38,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3053 transitions. [2022-11-20 10:57:38,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 169.61111111111111) internal successors, (3053), 18 states have internal predecessors, (3053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:38,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 205.0) internal successors, (3895), 19 states have internal predecessors, (3895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:38,054 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 205.0) internal successors, (3895), 19 states have internal predecessors, (3895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:38,055 INFO L175 Difference]: Start difference. First operand has 178 places, 175 transitions, 409 flow. Second operand 18 states and 3053 transitions. [2022-11-20 10:57:38,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 268 transitions, 931 flow [2022-11-20 10:57:38,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 268 transitions, 926 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:57:38,068 INFO L231 Difference]: Finished difference. Result has 194 places, 202 transitions, 642 flow [2022-11-20 10:57:38,068 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=642, PETRI_PLACES=194, PETRI_TRANSITIONS=202} [2022-11-20 10:57:38,069 INFO L288 CegarLoopForPetriNet]: 176 programPoint places, 18 predicate places. [2022-11-20 10:57:38,069 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 202 transitions, 642 flow [2022-11-20 10:57:38,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 164.66666666666666) internal successors, (1976), 12 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:38,071 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:57:38,072 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] [2022-11-20 10:57:38,078 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1164b3d9-6948-4d21-846c-e326aabf2653/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 10:57:38,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1164b3d9-6948-4d21-846c-e326aabf2653/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-20 10:57:38,278 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 10:57:38,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:38,279 INFO L85 PathProgramCache]: Analyzing trace with hash -2136473005, now seen corresponding path program 1 times [2022-11-20 10:57:38,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:38,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404751582] [2022-11-20 10:57:38,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:38,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:38,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:38,521 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:57:38,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:38,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404751582] [2022-11-20 10:57:38,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404751582] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:57:38,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905897638] [2022-11-20 10:57:38,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:38,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:57:38,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1164b3d9-6948-4d21-846c-e326aabf2653/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:38,524 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1164b3d9-6948-4d21-846c-e326aabf2653/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:57:38,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1164b3d9-6948-4d21-846c-e326aabf2653/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 10:57:38,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:38,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:57:38,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:57:38,707 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:57:38,708 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:57:38,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905897638] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:57:38,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:57:38,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 10:57:38,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026504190] [2022-11-20 10:57:38,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:57:38,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:57:38,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:38,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:57:38,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:57:38,719 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 205 [2022-11-20 10:57:38,721 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 202 transitions, 642 flow. Second operand has 6 states, 6 states have (on average 164.33333333333334) internal successors, (986), 6 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:38,722 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:57:38,722 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 205 [2022-11-20 10:57:38,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:57:39,045 INFO L130 PetriNetUnfolder]: 91/877 cut-off events. [2022-11-20 10:57:39,045 INFO L131 PetriNetUnfolder]: For 161/161 co-relation queries the response was YES. [2022-11-20 10:57:39,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1236 conditions, 877 events. 91/877 cut-off events. For 161/161 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 4567 event pairs, 35 based on Foata normal form. 8/765 useless extension candidates. Maximal degree in co-relation 957. Up to 136 conditions per place. [2022-11-20 10:57:39,060 INFO L137 encePairwiseOnDemand]: 194/205 looper letters, 47 selfloop transitions, 27 changer transitions 0/211 dead transitions. [2022-11-20 10:57:39,060 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 211 transitions, 780 flow [2022-11-20 10:57:39,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:57:39,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 10:57:39,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1189 transitions. [2022-11-20 10:57:39,087 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8285714285714286 [2022-11-20 10:57:39,088 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1189 transitions. [2022-11-20 10:57:39,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1189 transitions. [2022-11-20 10:57:39,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:57:39,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1189 transitions. [2022-11-20 10:57:39,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 169.85714285714286) internal successors, (1189), 7 states have internal predecessors, (1189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:39,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 205.0) internal successors, (1640), 8 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:39,095 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 205.0) internal successors, (1640), 8 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:39,095 INFO L175 Difference]: Start difference. First operand has 194 places, 202 transitions, 642 flow. Second operand 7 states and 1189 transitions. [2022-11-20 10:57:39,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 211 transitions, 780 flow [2022-11-20 10:57:39,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 211 transitions, 706 flow, removed 26 selfloop flow, removed 5 redundant places. [2022-11-20 10:57:39,103 INFO L231 Difference]: Finished difference. Result has 189 places, 194 transitions, 568 flow [2022-11-20 10:57:39,103 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=568, PETRI_PLACES=189, PETRI_TRANSITIONS=194} [2022-11-20 10:57:39,104 INFO L288 CegarLoopForPetriNet]: 176 programPoint places, 13 predicate places. [2022-11-20 10:57:39,104 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 194 transitions, 568 flow [2022-11-20 10:57:39,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 164.33333333333334) internal successors, (986), 6 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:39,105 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:57:39,105 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-20 10:57:39,115 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1164b3d9-6948-4d21-846c-e326aabf2653/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-20 10:57:39,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1164b3d9-6948-4d21-846c-e326aabf2653/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:57:39,311 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 10:57:39,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:39,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1111200822, now seen corresponding path program 2 times [2022-11-20 10:57:39,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:39,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806622037] [2022-11-20 10:57:39,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:39,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:39,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:39,596 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:57:39,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:39,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806622037] [2022-11-20 10:57:39,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806622037] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:57:39,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574788625] [2022-11-20 10:57:39,599 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:57:39,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:57:39,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1164b3d9-6948-4d21-846c-e326aabf2653/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:39,606 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1164b3d9-6948-4d21-846c-e326aabf2653/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:57:39,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1164b3d9-6948-4d21-846c-e326aabf2653/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 10:57:39,697 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 10:57:39,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:57:39,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 10:57:39,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:57:39,863 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-20 10:57:39,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:57:40,031 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-20 10:57:40,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574788625] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:57:40,032 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:57:40,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-20 10:57:40,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733921796] [2022-11-20 10:57:40,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:57:40,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 10:57:40,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:40,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 10:57:40,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-20 10:57:40,038 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 205 [2022-11-20 10:57:40,041 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 194 transitions, 568 flow. Second operand has 18 states, 18 states have (on average 143.61111111111111) internal successors, (2585), 18 states have internal predecessors, (2585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:40,041 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:57:40,041 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 205 [2022-11-20 10:57:40,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:57:41,649 INFO L130 PetriNetUnfolder]: 1289/4409 cut-off events. [2022-11-20 10:57:41,649 INFO L131 PetriNetUnfolder]: For 271/271 co-relation queries the response was YES. [2022-11-20 10:57:41,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6684 conditions, 4409 events. 1289/4409 cut-off events. For 271/271 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 34940 event pairs, 721 based on Foata normal form. 4/3125 useless extension candidates. Maximal degree in co-relation 5444. Up to 287 conditions per place. [2022-11-20 10:57:41,793 INFO L137 encePairwiseOnDemand]: 186/205 looper letters, 169 selfloop transitions, 53 changer transitions 0/338 dead transitions. [2022-11-20 10:57:41,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 338 transitions, 1378 flow [2022-11-20 10:57:41,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 10:57:41,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-20 10:57:41,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3586 transitions. [2022-11-20 10:57:41,805 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7288617886178862 [2022-11-20 10:57:41,806 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3586 transitions. [2022-11-20 10:57:41,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3586 transitions. [2022-11-20 10:57:41,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:57:41,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3586 transitions. [2022-11-20 10:57:41,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 149.41666666666666) internal successors, (3586), 24 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:41,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 205.0) internal successors, (5125), 25 states have internal predecessors, (5125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:41,835 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 205.0) internal successors, (5125), 25 states have internal predecessors, (5125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:41,835 INFO L175 Difference]: Start difference. First operand has 189 places, 194 transitions, 568 flow. Second operand 24 states and 3586 transitions. [2022-11-20 10:57:41,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 338 transitions, 1378 flow [2022-11-20 10:57:41,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 338 transitions, 1320 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-20 10:57:41,848 INFO L231 Difference]: Finished difference. Result has 202 places, 204 transitions, 673 flow [2022-11-20 10:57:41,849 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=673, PETRI_PLACES=202, PETRI_TRANSITIONS=204} [2022-11-20 10:57:41,850 INFO L288 CegarLoopForPetriNet]: 176 programPoint places, 26 predicate places. [2022-11-20 10:57:41,851 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 204 transitions, 673 flow [2022-11-20 10:57:41,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 143.61111111111111) internal successors, (2585), 18 states have internal predecessors, (2585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:41,853 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:57:41,854 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] [2022-11-20 10:57:41,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1164b3d9-6948-4d21-846c-e326aabf2653/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:42,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1164b3d9-6948-4d21-846c-e326aabf2653/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:57:42,060 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 10:57:42,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:42,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1489071132, now seen corresponding path program 1 times [2022-11-20 10:57:42,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:42,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865915832] [2022-11-20 10:57:42,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:42,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:42,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:42,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:57:42,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:42,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865915832] [2022-11-20 10:57:42,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865915832] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:57:42,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:57:42,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:57:42,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485052090] [2022-11-20 10:57:42,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:57:42,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:57:42,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:42,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:57:42,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:57:42,215 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 205 [2022-11-20 10:57:42,216 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 204 transitions, 673 flow. Second operand has 4 states, 4 states have (on average 176.5) internal successors, (706), 4 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:42,217 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:57:42,217 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 205 [2022-11-20 10:57:42,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:57:43,404 INFO L130 PetriNetUnfolder]: 1723/6096 cut-off events. [2022-11-20 10:57:43,404 INFO L131 PetriNetUnfolder]: For 191/219 co-relation queries the response was YES. [2022-11-20 10:57:43,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9466 conditions, 6096 events. 1723/6096 cut-off events. For 191/219 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 55539 event pairs, 721 based on Foata normal form. 0/4927 useless extension candidates. Maximal degree in co-relation 1314. Up to 1492 conditions per place. [2022-11-20 10:57:43,460 INFO L137 encePairwiseOnDemand]: 199/205 looper letters, 36 selfloop transitions, 4 changer transitions 0/226 dead transitions. [2022-11-20 10:57:43,461 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 226 transitions, 808 flow [2022-11-20 10:57:43,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:57:43,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:57:43,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 917 transitions. [2022-11-20 10:57:43,464 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8946341463414634 [2022-11-20 10:57:43,464 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 917 transitions. [2022-11-20 10:57:43,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 917 transitions. [2022-11-20 10:57:43,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:57:43,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 917 transitions. [2022-11-20 10:57:43,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 183.4) internal successors, (917), 5 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:43,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:43,471 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:43,471 INFO L175 Difference]: Start difference. First operand has 202 places, 204 transitions, 673 flow. Second operand 5 states and 917 transitions. [2022-11-20 10:57:43,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 226 transitions, 808 flow [2022-11-20 10:57:43,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 226 transitions, 729 flow, removed 7 selfloop flow, removed 15 redundant places. [2022-11-20 10:57:43,476 INFO L231 Difference]: Finished difference. Result has 194 places, 207 transitions, 624 flow [2022-11-20 10:57:43,477 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=594, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=624, PETRI_PLACES=194, PETRI_TRANSITIONS=207} [2022-11-20 10:57:43,480 INFO L288 CegarLoopForPetriNet]: 176 programPoint places, 18 predicate places. [2022-11-20 10:57:43,480 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 207 transitions, 624 flow [2022-11-20 10:57:43,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 176.5) internal successors, (706), 4 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:43,481 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:57:43,481 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:57:43,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 10:57:43,482 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 10:57:43,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:43,482 INFO L85 PathProgramCache]: Analyzing trace with hash -306758919, now seen corresponding path program 1 times [2022-11-20 10:57:43,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:43,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388667944] [2022-11-20 10:57:43,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:43,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:43,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:43,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:57:43,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:43,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388667944] [2022-11-20 10:57:43,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388667944] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:57:43,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:57:43,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:57:43,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742275831] [2022-11-20 10:57:43,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:57:43,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:57:43,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:43,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:57:43,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:57:43,643 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 205 [2022-11-20 10:57:43,644 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 207 transitions, 624 flow. Second operand has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:43,644 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:57:43,644 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 205 [2022-11-20 10:57:43,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:57:44,482 INFO L130 PetriNetUnfolder]: 1240/3373 cut-off events. [2022-11-20 10:57:44,483 INFO L131 PetriNetUnfolder]: For 696/696 co-relation queries the response was YES. [2022-11-20 10:57:44,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6181 conditions, 3373 events. 1240/3373 cut-off events. For 696/696 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 30317 event pairs, 644 based on Foata normal form. 0/2764 useless extension candidates. Maximal degree in co-relation 4290. Up to 1317 conditions per place. [2022-11-20 10:57:44,530 INFO L137 encePairwiseOnDemand]: 199/205 looper letters, 33 selfloop transitions, 4 changer transitions 0/226 dead transitions. [2022-11-20 10:57:44,530 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 226 transitions, 746 flow [2022-11-20 10:57:44,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:57:44,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:57:44,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 914 transitions. [2022-11-20 10:57:44,534 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8917073170731707 [2022-11-20 10:57:44,534 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 914 transitions. [2022-11-20 10:57:44,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 914 transitions. [2022-11-20 10:57:44,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:57:44,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 914 transitions. [2022-11-20 10:57:44,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 182.8) internal successors, (914), 5 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:44,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:44,540 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:44,540 INFO L175 Difference]: Start difference. First operand has 194 places, 207 transitions, 624 flow. Second operand 5 states and 914 transitions. [2022-11-20 10:57:44,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 226 transitions, 746 flow [2022-11-20 10:57:44,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 226 transitions, 744 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:57:44,551 INFO L231 Difference]: Finished difference. Result has 200 places, 210 transitions, 652 flow [2022-11-20 10:57:44,552 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=622, PETRI_DIFFERENCE_MINUEND_PLACES=193, 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=652, PETRI_PLACES=200, PETRI_TRANSITIONS=210} [2022-11-20 10:57:44,554 INFO L288 CegarLoopForPetriNet]: 176 programPoint places, 24 predicate places. [2022-11-20 10:57:44,554 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 210 transitions, 652 flow [2022-11-20 10:57:44,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:44,554 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:57:44,555 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:57:44,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 10:57:44,555 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 10:57:44,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:44,555 INFO L85 PathProgramCache]: Analyzing trace with hash 800919834, now seen corresponding path program 1 times [2022-11-20 10:57:44,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:44,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645238367] [2022-11-20 10:57:44,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:44,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:44,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:44,765 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:57:44,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:44,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645238367] [2022-11-20 10:57:44,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645238367] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:57:44,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269372487] [2022-11-20 10:57:44,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:44,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:57:44,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1164b3d9-6948-4d21-846c-e326aabf2653/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:44,768 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1164b3d9-6948-4d21-846c-e326aabf2653/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:57:44,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1164b3d9-6948-4d21-846c-e326aabf2653/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 10:57:44,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:44,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 10:57:44,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:57:45,060 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 10:57:45,060 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:57:45,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269372487] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:57:45,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:57:45,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-11-20 10:57:45,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664971006] [2022-11-20 10:57:45,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:57:45,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:57:45,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:45,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:57:45,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-20 10:57:45,064 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 205 [2022-11-20 10:57:45,065 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 210 transitions, 652 flow. Second operand has 7 states, 7 states have (on average 152.57142857142858) internal successors, (1068), 7 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:45,065 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:57:45,066 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 205 [2022-11-20 10:57:45,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:57:50,041 INFO L130 PetriNetUnfolder]: 6623/21712 cut-off events. [2022-11-20 10:57:50,041 INFO L131 PetriNetUnfolder]: For 4075/4351 co-relation queries the response was YES. [2022-11-20 10:57:50,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41220 conditions, 21712 events. 6623/21712 cut-off events. For 4075/4351 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 250019 event pairs, 5622 based on Foata normal form. 0/18814 useless extension candidates. Maximal degree in co-relation 25261. Up to 7744 conditions per place. [2022-11-20 10:57:50,254 INFO L137 encePairwiseOnDemand]: 191/205 looper letters, 123 selfloop transitions, 23 changer transitions 0/283 dead transitions. [2022-11-20 10:57:50,254 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 283 transitions, 1164 flow [2022-11-20 10:57:50,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 10:57:50,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 10:57:50,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1753 transitions. [2022-11-20 10:57:50,262 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7773835920177383 [2022-11-20 10:57:50,263 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1753 transitions. [2022-11-20 10:57:50,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1753 transitions. [2022-11-20 10:57:50,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:57:50,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1753 transitions. [2022-11-20 10:57:50,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 159.36363636363637) internal successors, (1753), 11 states have internal predecessors, (1753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:50,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 205.0) internal successors, (2460), 12 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:50,273 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 205.0) internal successors, (2460), 12 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:50,273 INFO L175 Difference]: Start difference. First operand has 200 places, 210 transitions, 652 flow. Second operand 11 states and 1753 transitions. [2022-11-20 10:57:50,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 283 transitions, 1164 flow [2022-11-20 10:57:50,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 283 transitions, 1162 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:57:50,426 INFO L231 Difference]: Finished difference. Result has 212 places, 217 transitions, 741 flow [2022-11-20 10:57:50,426 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=741, PETRI_PLACES=212, PETRI_TRANSITIONS=217} [2022-11-20 10:57:50,427 INFO L288 CegarLoopForPetriNet]: 176 programPoint places, 36 predicate places. [2022-11-20 10:57:50,427 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 217 transitions, 741 flow [2022-11-20 10:57:50,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 152.57142857142858) internal successors, (1068), 7 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:50,428 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:57:50,428 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:57:50,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1164b3d9-6948-4d21-846c-e326aabf2653/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:50,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1164b3d9-6948-4d21-846c-e326aabf2653/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-20 10:57:50,634 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 10:57:50,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:50,635 INFO L85 PathProgramCache]: Analyzing trace with hash -47790388, now seen corresponding path program 1 times [2022-11-20 10:57:50,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:50,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261181798] [2022-11-20 10:57:50,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:50,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:50,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:50,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:57:50,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:50,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261181798] [2022-11-20 10:57:50,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261181798] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:57:50,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:57:50,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:57:50,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064669781] [2022-11-20 10:57:50,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:57:50,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:57:50,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:50,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:57:50,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:57:50,741 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 205 [2022-11-20 10:57:50,743 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 217 transitions, 741 flow. Second operand has 4 states, 4 states have (on average 177.25) internal successors, (709), 4 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:50,743 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:57:50,743 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 205 [2022-11-20 10:57:50,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:57:52,501 INFO L130 PetriNetUnfolder]: 3706/9078 cut-off events. [2022-11-20 10:57:52,501 INFO L131 PetriNetUnfolder]: For 2209/2209 co-relation queries the response was YES. [2022-11-20 10:57:52,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16212 conditions, 9078 events. 3706/9078 cut-off events. For 2209/2209 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 93009 event pairs, 1813 based on Foata normal form. 0/7506 useless extension candidates. Maximal degree in co-relation 12574. Up to 3608 conditions per place. [2022-11-20 10:57:52,602 INFO L137 encePairwiseOnDemand]: 199/205 looper letters, 32 selfloop transitions, 4 changer transitions 0/235 dead transitions. [2022-11-20 10:57:52,602 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 235 transitions, 855 flow [2022-11-20 10:57:52,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:57:52,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:57:52,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 913 transitions. [2022-11-20 10:57:52,608 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8907317073170732 [2022-11-20 10:57:52,608 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 913 transitions. [2022-11-20 10:57:52,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 913 transitions. [2022-11-20 10:57:52,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:57:52,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 913 transitions. [2022-11-20 10:57:52,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 182.6) internal successors, (913), 5 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:52,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:52,633 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:52,633 INFO L175 Difference]: Start difference. First operand has 212 places, 217 transitions, 741 flow. Second operand 5 states and 913 transitions. [2022-11-20 10:57:52,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 235 transitions, 855 flow [2022-11-20 10:57:52,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 235 transitions, 850 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 10:57:52,644 INFO L231 Difference]: Finished difference. Result has 217 places, 220 transitions, 766 flow [2022-11-20 10:57:52,645 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=736, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=766, PETRI_PLACES=217, PETRI_TRANSITIONS=220} [2022-11-20 10:57:52,648 INFO L288 CegarLoopForPetriNet]: 176 programPoint places, 41 predicate places. [2022-11-20 10:57:52,648 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 220 transitions, 766 flow [2022-11-20 10:57:52,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 177.25) internal successors, (709), 4 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:52,650 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:57:52,651 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:57:52,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 10:57:52,651 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 10:57:52,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:52,652 INFO L85 PathProgramCache]: Analyzing trace with hash 2125154451, now seen corresponding path program 1 times [2022-11-20 10:57:52,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:52,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816662155] [2022-11-20 10:57:52,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:52,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:52,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:52,887 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 10:57:52,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:52,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816662155] [2022-11-20 10:57:52,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816662155] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:57:52,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:57:52,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:57:52,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629524289] [2022-11-20 10:57:52,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:57:52,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:57:52,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:52,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:57:52,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:57:52,892 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 205 [2022-11-20 10:57:52,894 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 220 transitions, 766 flow. Second operand has 7 states, 7 states have (on average 152.85714285714286) internal successors, (1070), 7 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:52,894 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:57:52,894 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 205 [2022-11-20 10:57:52,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:57:57,180 INFO L130 PetriNetUnfolder]: 8718/20691 cut-off events. [2022-11-20 10:57:57,180 INFO L131 PetriNetUnfolder]: For 8099/8267 co-relation queries the response was YES. [2022-11-20 10:57:57,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42746 conditions, 20691 events. 8718/20691 cut-off events. For 8099/8267 co-relation queries the response was YES. Maximal size of possible extension queue 713. Compared 221259 event pairs, 7760 based on Foata normal form. 168/17878 useless extension candidates. Maximal degree in co-relation 26335. Up to 12466 conditions per place. [2022-11-20 10:57:57,399 INFO L137 encePairwiseOnDemand]: 191/205 looper letters, 111 selfloop transitions, 23 changer transitions 4/280 dead transitions. [2022-11-20 10:57:57,400 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 280 transitions, 1231 flow [2022-11-20 10:57:57,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 10:57:57,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 10:57:57,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1745 transitions. [2022-11-20 10:57:57,405 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7738359201773836 [2022-11-20 10:57:57,405 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1745 transitions. [2022-11-20 10:57:57,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1745 transitions. [2022-11-20 10:57:57,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:57:57,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1745 transitions. [2022-11-20 10:57:57,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 158.63636363636363) internal successors, (1745), 11 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:57,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 205.0) internal successors, (2460), 12 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:57,416 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 205.0) internal successors, (2460), 12 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:57,417 INFO L175 Difference]: Start difference. First operand has 217 places, 220 transitions, 766 flow. Second operand 11 states and 1745 transitions. [2022-11-20 10:57:57,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 280 transitions, 1231 flow [2022-11-20 10:57:57,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 280 transitions, 1229 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:57:57,538 INFO L231 Difference]: Finished difference. Result has 228 places, 222 transitions, 826 flow [2022-11-20 10:57:57,538 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=764, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=826, PETRI_PLACES=228, PETRI_TRANSITIONS=222} [2022-11-20 10:57:57,539 INFO L288 CegarLoopForPetriNet]: 176 programPoint places, 52 predicate places. [2022-11-20 10:57:57,539 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 222 transitions, 826 flow [2022-11-20 10:57:57,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 152.85714285714286) internal successors, (1070), 7 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:57,540 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:57:57,540 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:57:57,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 10:57:57,540 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 10:57:57,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:57,541 INFO L85 PathProgramCache]: Analyzing trace with hash -916502517, now seen corresponding path program 1 times [2022-11-20 10:57:57,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:57,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864277291] [2022-11-20 10:57:57,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:57,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:57,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:57,683 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:57:57,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:57,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864277291] [2022-11-20 10:57:57,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864277291] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:57:57,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042433956] [2022-11-20 10:57:57,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:57,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:57:57,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1164b3d9-6948-4d21-846c-e326aabf2653/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:57,691 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1164b3d9-6948-4d21-846c-e326aabf2653/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:57:57,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1164b3d9-6948-4d21-846c-e326aabf2653/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 10:57:57,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:57,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 10:57:57,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:57:58,004 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 10:57:58,005 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:57:58,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042433956] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:57:58,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:57:58,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-11-20 10:57:58,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094250617] [2022-11-20 10:57:58,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:57:58,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:57:58,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:58,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:57:58,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-20 10:57:58,008 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 205 [2022-11-20 10:57:58,010 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 222 transitions, 826 flow. Second operand has 7 states, 7 states have (on average 153.0) internal successors, (1071), 7 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:58,010 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:57:58,010 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 205 [2022-11-20 10:57:58,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:58:02,184 INFO L130 PetriNetUnfolder]: 8678/20445 cut-off events. [2022-11-20 10:58:02,184 INFO L131 PetriNetUnfolder]: For 11579/11705 co-relation queries the response was YES. [2022-11-20 10:58:02,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43473 conditions, 20445 events. 8678/20445 cut-off events. For 11579/11705 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 215810 event pairs, 7519 based on Foata normal form. 126/18461 useless extension candidates. Maximal degree in co-relation 24788. Up to 12214 conditions per place. [2022-11-20 10:58:02,398 INFO L137 encePairwiseOnDemand]: 191/205 looper letters, 61 selfloop transitions, 15 changer transitions 58/274 dead transitions. [2022-11-20 10:58:02,398 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 274 transitions, 1257 flow [2022-11-20 10:58:02,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 10:58:02,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 10:58:02,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1737 transitions. [2022-11-20 10:58:02,411 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7702882483370288 [2022-11-20 10:58:02,411 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1737 transitions. [2022-11-20 10:58:02,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1737 transitions. [2022-11-20 10:58:02,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:58:02,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1737 transitions. [2022-11-20 10:58:02,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 157.9090909090909) internal successors, (1737), 11 states have internal predecessors, (1737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:58:02,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 205.0) internal successors, (2460), 12 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:58:02,432 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 205.0) internal successors, (2460), 12 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:58:02,432 INFO L175 Difference]: Start difference. First operand has 228 places, 222 transitions, 826 flow. Second operand 11 states and 1737 transitions. [2022-11-20 10:58:02,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 274 transitions, 1257 flow [2022-11-20 10:58:02,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 274 transitions, 1235 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 10:58:02,545 INFO L231 Difference]: Finished difference. Result has 237 places, 212 transitions, 768 flow [2022-11-20 10:58:02,547 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=804, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=768, PETRI_PLACES=237, PETRI_TRANSITIONS=212} [2022-11-20 10:58:02,548 INFO L288 CegarLoopForPetriNet]: 176 programPoint places, 61 predicate places. [2022-11-20 10:58:02,548 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 212 transitions, 768 flow [2022-11-20 10:58:02,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 153.0) internal successors, (1071), 7 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:58:02,548 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:58:02,549 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:58:02,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1164b3d9-6948-4d21-846c-e326aabf2653/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 10:58:02,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1164b3d9-6948-4d21-846c-e326aabf2653/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 10:58:02,756 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 10:58:02,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:58:02,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1952035865, now seen corresponding path program 1 times [2022-11-20 10:58:02,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:58:02,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984699662] [2022-11-20 10:58:02,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:58:02,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:58:02,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:02,890 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 10:58:02,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:58:02,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984699662] [2022-11-20 10:58:02,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984699662] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:58:02,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549169755] [2022-11-20 10:58:02,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:58:02,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:58:02,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1164b3d9-6948-4d21-846c-e326aabf2653/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:58:02,893 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1164b3d9-6948-4d21-846c-e326aabf2653/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:58:02,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1164b3d9-6948-4d21-846c-e326aabf2653/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 10:58:03,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:03,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 10:58:03,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:58:03,363 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:58:03,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:58:03,745 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:58:03,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549169755] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:58:03,745 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:58:03,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 23 [2022-11-20 10:58:03,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326982696] [2022-11-20 10:58:03,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:58:03,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 10:58:03,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:58:03,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 10:58:03,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:58:03,753 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 205 [2022-11-20 10:58:03,756 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 212 transitions, 768 flow. Second operand has 23 states, 23 states have (on average 138.8695652173913) internal successors, (3194), 23 states have internal predecessors, (3194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:58:03,756 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:58:03,756 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 205 [2022-11-20 10:58:03,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:58:14,384 INFO L130 PetriNetUnfolder]: 22426/48566 cut-off events. [2022-11-20 10:58:14,385 INFO L131 PetriNetUnfolder]: For 30528/30703 co-relation queries the response was YES. [2022-11-20 10:58:14,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113642 conditions, 48566 events. 22426/48566 cut-off events. For 30528/30703 co-relation queries the response was YES. Maximal size of possible extension queue 1492. Compared 546529 event pairs, 6085 based on Foata normal form. 662/47613 useless extension candidates. Maximal degree in co-relation 72939. Up to 7023 conditions per place. [2022-11-20 10:58:14,868 INFO L137 encePairwiseOnDemand]: 179/205 looper letters, 298 selfloop transitions, 62 changer transitions 0/476 dead transitions. [2022-11-20 10:58:14,868 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 476 transitions, 2428 flow [2022-11-20 10:58:14,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-20 10:58:14,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-20 10:58:14,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 4879 transitions. [2022-11-20 10:58:14,877 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7 [2022-11-20 10:58:14,878 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 4879 transitions. [2022-11-20 10:58:14,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 4879 transitions. [2022-11-20 10:58:14,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:58:14,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 4879 transitions. [2022-11-20 10:58:14,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 143.5) internal successors, (4879), 34 states have internal predecessors, (4879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:58:14,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 205.0) internal successors, (7175), 35 states have internal predecessors, (7175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:58:14,903 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 205.0) internal successors, (7175), 35 states have internal predecessors, (7175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:58:14,904 INFO L175 Difference]: Start difference. First operand has 237 places, 212 transitions, 768 flow. Second operand 34 states and 4879 transitions. [2022-11-20 10:58:14,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 476 transitions, 2428 flow [2022-11-20 10:58:15,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 476 transitions, 2107 flow, removed 100 selfloop flow, removed 18 redundant places. [2022-11-20 10:58:15,285 INFO L231 Difference]: Finished difference. Result has 246 places, 245 transitions, 1007 flow [2022-11-20 10:58:15,285 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=1007, PETRI_PLACES=246, PETRI_TRANSITIONS=245} [2022-11-20 10:58:15,286 INFO L288 CegarLoopForPetriNet]: 176 programPoint places, 70 predicate places. [2022-11-20 10:58:15,286 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 245 transitions, 1007 flow [2022-11-20 10:58:15,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 138.8695652173913) internal successors, (3194), 23 states have internal predecessors, (3194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:58:15,288 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:58:15,288 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:58:15,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1164b3d9-6948-4d21-846c-e326aabf2653/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 10:58:15,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1164b3d9-6948-4d21-846c-e326aabf2653/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-20 10:58:15,493 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 10:58:15,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:58:15,494 INFO L85 PathProgramCache]: Analyzing trace with hash -89107232, now seen corresponding path program 1 times [2022-11-20 10:58:15,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:58:15,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591865309] [2022-11-20 10:58:15,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:58:15,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:58:15,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:15,756 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:58:15,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:58:15,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591865309] [2022-11-20 10:58:15,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591865309] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:58:15,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638175662] [2022-11-20 10:58:15,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:58:15,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:58:15,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1164b3d9-6948-4d21-846c-e326aabf2653/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:58:15,759 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1164b3d9-6948-4d21-846c-e326aabf2653/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:58:15,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1164b3d9-6948-4d21-846c-e326aabf2653/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 10:58:15,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:15,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 10:58:15,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:58:16,207 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:58:16,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:58:16,574 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:58:16,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638175662] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:58:16,575 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:58:16,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-11-20 10:58:16,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778168035] [2022-11-20 10:58:16,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:58:16,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 10:58:16,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:58:16,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 10:58:16,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=434, Unknown=0, NotChecked=0, Total=552 [2022-11-20 10:58:16,580 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 205 [2022-11-20 10:58:16,587 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 245 transitions, 1007 flow. Second operand has 24 states, 24 states have (on average 137.75) internal successors, (3306), 24 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:58:16,589 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:58:16,589 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 205 [2022-11-20 10:58:16,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:58:24,941 INFO L130 PetriNetUnfolder]: 20534/40641 cut-off events. [2022-11-20 10:58:24,941 INFO L131 PetriNetUnfolder]: For 19602/22240 co-relation queries the response was YES. [2022-11-20 10:58:25,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95548 conditions, 40641 events. 20534/40641 cut-off events. For 19602/22240 co-relation queries the response was YES. Maximal size of possible extension queue 1610. Compared 439987 event pairs, 13656 based on Foata normal form. 2638/37100 useless extension candidates. Maximal degree in co-relation 74225. Up to 20348 conditions per place. [2022-11-20 10:58:25,325 INFO L137 encePairwiseOnDemand]: 181/205 looper letters, 221 selfloop transitions, 58 changer transitions 12/419 dead transitions. [2022-11-20 10:58:25,325 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 419 transitions, 2183 flow [2022-11-20 10:58:25,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-20 10:58:25,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-20 10:58:25,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3986 transitions. [2022-11-20 10:58:25,332 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.694425087108014 [2022-11-20 10:58:25,332 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3986 transitions. [2022-11-20 10:58:25,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3986 transitions. [2022-11-20 10:58:25,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:58:25,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3986 transitions. [2022-11-20 10:58:25,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 142.35714285714286) internal successors, (3986), 28 states have internal predecessors, (3986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:58:25,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 205.0) internal successors, (5945), 29 states have internal predecessors, (5945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:58:25,350 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 205.0) internal successors, (5945), 29 states have internal predecessors, (5945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:58:25,350 INFO L175 Difference]: Start difference. First operand has 246 places, 245 transitions, 1007 flow. Second operand 28 states and 3986 transitions. [2022-11-20 10:58:25,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 419 transitions, 2183 flow [2022-11-20 10:58:25,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 419 transitions, 2134 flow, removed 4 selfloop flow, removed 8 redundant places. [2022-11-20 10:58:25,905 INFO L231 Difference]: Finished difference. Result has 268 places, 258 transitions, 1158 flow [2022-11-20 10:58:25,905 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=958, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1158, PETRI_PLACES=268, PETRI_TRANSITIONS=258} [2022-11-20 10:58:25,906 INFO L288 CegarLoopForPetriNet]: 176 programPoint places, 92 predicate places. [2022-11-20 10:58:25,906 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 258 transitions, 1158 flow [2022-11-20 10:58:25,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 137.75) internal successors, (3306), 24 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:58:25,907 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:58:25,907 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:58:25,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1164b3d9-6948-4d21-846c-e326aabf2653/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 10:58:26,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1164b3d9-6948-4d21-846c-e326aabf2653/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 10:58:26,112 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 10:58:26,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:58:26,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1043183448, now seen corresponding path program 1 times [2022-11-20 10:58:26,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:58:26,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641258980] [2022-11-20 10:58:26,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:58:26,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:58:26,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:26,256 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 10:58:26,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:58:26,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641258980] [2022-11-20 10:58:26,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641258980] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:58:26,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406117901] [2022-11-20 10:58:26,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:58:26,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:58:26,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1164b3d9-6948-4d21-846c-e326aabf2653/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:58:26,263 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1164b3d9-6948-4d21-846c-e326aabf2653/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:58:26,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1164b3d9-6948-4d21-846c-e326aabf2653/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 10:58:26,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:26,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 10:58:26,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:58:26,695 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:58:26,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:58:27,058 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:58:27,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406117901] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:58:27,058 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:58:27,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 23 [2022-11-20 10:58:27,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597240950] [2022-11-20 10:58:27,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:58:27,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 10:58:27,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:58:27,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 10:58:27,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:58:27,063 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 205 [2022-11-20 10:58:27,065 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 258 transitions, 1158 flow. Second operand has 23 states, 23 states have (on average 139.2608695652174) internal successors, (3203), 23 states have internal predecessors, (3203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:58:27,066 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:58:27,066 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 205 [2022-11-20 10:58:27,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand