./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-exp-term-subst.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_92062e1b-78ae-4e14-b75a-a2cbfba1e0d2/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92062e1b-78ae-4e14-b75a-a2cbfba1e0d2/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_92062e1b-78ae-4e14-b75a-a2cbfba1e0d2/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92062e1b-78ae-4e14-b75a-a2cbfba1e0d2/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-exp-term-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92062e1b-78ae-4e14-b75a-a2cbfba1e0d2/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_92062e1b-78ae-4e14-b75a-a2cbfba1e0d2/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 a4208e364fc80ce33bd799516b7b127a7314c394860a88240a88c2fb8dc1fa8b --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 11:14:18,269 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:14:18,272 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:14:18,316 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:14:18,318 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:14:18,324 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:14:18,327 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:14:18,330 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:14:18,335 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:14:18,337 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:14:18,339 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:14:18,342 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:14:18,342 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:14:18,348 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:14:18,349 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:14:18,351 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:14:18,353 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:14:18,356 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:14:18,357 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:14:18,362 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:14:18,365 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:14:18,368 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:14:18,370 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:14:18,371 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:14:18,380 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:14:18,382 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:14:18,382 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:14:18,385 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:14:18,385 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:14:18,386 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:14:18,387 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:14:18,388 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:14:18,390 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:14:18,391 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:14:18,392 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:14:18,393 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:14:18,393 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:14:18,394 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:14:18,394 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:14:18,396 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:14:18,397 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:14:18,398 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92062e1b-78ae-4e14-b75a-a2cbfba1e0d2/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 11:14:18,442 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:14:18,442 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:14:18,443 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:14:18,443 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:14:18,444 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:14:18,445 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:14:18,445 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:14:18,446 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:14:18,446 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:14:18,446 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:14:18,448 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:14:18,448 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:14:18,448 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:14:18,448 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:14:18,449 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:14:18,449 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:14:18,449 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:14:18,449 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:14:18,450 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 11:14:18,450 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:14:18,450 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:14:18,450 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:14:18,451 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:14:18,451 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:14:18,451 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:14:18,451 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:14:18,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:14:18,452 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:14:18,453 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:14:18,453 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:14:18,453 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:14:18,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:14:18,454 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:14:18,454 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:14:18,455 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:14:18,455 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_92062e1b-78ae-4e14-b75a-a2cbfba1e0d2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92062e1b-78ae-4e14-b75a-a2cbfba1e0d2/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a4208e364fc80ce33bd799516b7b127a7314c394860a88240a88c2fb8dc1fa8b [2022-11-20 11:14:18,799 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:14:18,831 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:14:18,834 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:14:18,836 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:14:18,837 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:14:18,838 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92062e1b-78ae-4e14-b75a-a2cbfba1e0d2/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/chl-exp-term-subst.wvr.c [2022-11-20 11:14:22,131 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:14:22,346 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:14:22,347 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92062e1b-78ae-4e14-b75a-a2cbfba1e0d2/sv-benchmarks/c/weaver/chl-exp-term-subst.wvr.c [2022-11-20 11:14:22,355 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92062e1b-78ae-4e14-b75a-a2cbfba1e0d2/bin/uautomizer-ug76WZFUDN/data/503795a56/c015507e39924c6caf6d29ee010ba0df/FLAG328cb58fc [2022-11-20 11:14:22,370 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92062e1b-78ae-4e14-b75a-a2cbfba1e0d2/bin/uautomizer-ug76WZFUDN/data/503795a56/c015507e39924c6caf6d29ee010ba0df [2022-11-20 11:14:22,373 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:14:22,374 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:14:22,376 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:14:22,376 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:14:22,380 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:14:22,381 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:14:22" (1/1) ... [2022-11-20 11:14:22,382 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f21920a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:22, skipping insertion in model container [2022-11-20 11:14:22,383 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:14:22" (1/1) ... [2022-11-20 11:14:22,393 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:14:22,413 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:14:22,603 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_92062e1b-78ae-4e14-b75a-a2cbfba1e0d2/sv-benchmarks/c/weaver/chl-exp-term-subst.wvr.c[3072,3085] [2022-11-20 11:14:22,607 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:14:22,620 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:14:22,649 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_92062e1b-78ae-4e14-b75a-a2cbfba1e0d2/sv-benchmarks/c/weaver/chl-exp-term-subst.wvr.c[3072,3085] [2022-11-20 11:14:22,652 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:14:22,670 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:14:22,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:22 WrapperNode [2022-11-20 11:14:22,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:14:22,672 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:14:22,673 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:14:22,673 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:14:22,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:22" (1/1) ... [2022-11-20 11:14:22,692 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:22" (1/1) ... [2022-11-20 11:14:22,725 INFO L138 Inliner]: procedures = 23, calls = 31, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 218 [2022-11-20 11:14:22,725 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:14:22,726 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:14:22,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:14:22,726 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:14:22,738 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:22" (1/1) ... [2022-11-20 11:14:22,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:22" (1/1) ... [2022-11-20 11:14:22,742 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:22" (1/1) ... [2022-11-20 11:14:22,743 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:22" (1/1) ... [2022-11-20 11:14:22,749 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:22" (1/1) ... [2022-11-20 11:14:22,752 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:22" (1/1) ... [2022-11-20 11:14:22,754 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:22" (1/1) ... [2022-11-20 11:14:22,756 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:22" (1/1) ... [2022-11-20 11:14:22,760 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:14:22,761 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:14:22,761 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:14:22,761 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:14:22,762 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:22" (1/1) ... [2022-11-20 11:14:22,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:14:22,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92062e1b-78ae-4e14-b75a-a2cbfba1e0d2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:14:22,800 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92062e1b-78ae-4e14-b75a-a2cbfba1e0d2/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:14:22,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92062e1b-78ae-4e14-b75a-a2cbfba1e0d2/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:14:22,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:14:22,854 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 11:14:22,854 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 11:14:22,855 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 11:14:22,855 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 11:14:22,855 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 11:14:22,855 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 11:14:22,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:14:22,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:14:22,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:14:22,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:14:22,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:14:22,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:14:22,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:14:22,859 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 11:14:23,000 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:14:23,006 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:14:23,674 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:14:23,686 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:14:23,686 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 11:14:23,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:14:23 BoogieIcfgContainer [2022-11-20 11:14:23,688 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:14:23,698 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:14:23,699 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:14:23,703 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:14:23,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:14:22" (1/3) ... [2022-11-20 11:14:23,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d98dd85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:14:23, skipping insertion in model container [2022-11-20 11:14:23,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:22" (2/3) ... [2022-11-20 11:14:23,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d98dd85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:14:23, skipping insertion in model container [2022-11-20 11:14:23,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:14:23" (3/3) ... [2022-11-20 11:14:23,706 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-exp-term-subst.wvr.c [2022-11-20 11:14:23,725 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:14:23,735 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:14:23,735 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-20 11:14:23,736 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:14:23,938 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 11:14:23,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 284 places, 297 transitions, 618 flow [2022-11-20 11:14:24,128 INFO L130 PetriNetUnfolder]: 23/294 cut-off events. [2022-11-20 11:14:24,129 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 11:14:24,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307 conditions, 294 events. 23/294 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 807 event pairs, 0 based on Foata normal form. 0/253 useless extension candidates. Maximal degree in co-relation 220. Up to 2 conditions per place. [2022-11-20 11:14:24,140 INFO L82 GeneralOperation]: Start removeDead. Operand has 284 places, 297 transitions, 618 flow [2022-11-20 11:14:24,156 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 254 places, 265 transitions, 545 flow [2022-11-20 11:14:24,184 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:14:24,192 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;@462b6633, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:14:24,192 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2022-11-20 11:14:24,235 INFO L130 PetriNetUnfolder]: 4/101 cut-off events. [2022-11-20 11:14:24,236 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:14:24,236 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:14:24,237 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:14:24,237 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 11:14:24,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:24,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1245248335, now seen corresponding path program 1 times [2022-11-20 11:14:24,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:24,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903283635] [2022-11-20 11:14:24,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:24,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:24,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:24,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:14:24,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:14:24,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903283635] [2022-11-20 11:14:24,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903283635] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:14:24,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:14:24,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:14:24,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596603229] [2022-11-20 11:14:24,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:14:24,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:14:24,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:14:24,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:14:24,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:14:24,728 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 297 [2022-11-20 11:14:24,735 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 265 transitions, 545 flow. Second operand has 6 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:24,736 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:14:24,736 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 297 [2022-11-20 11:14:24,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:14:25,339 INFO L130 PetriNetUnfolder]: 155/966 cut-off events. [2022-11-20 11:14:25,339 INFO L131 PetriNetUnfolder]: For 89/89 co-relation queries the response was YES. [2022-11-20 11:14:25,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1329 conditions, 966 events. 155/966 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 6029 event pairs, 16 based on Foata normal form. 178/970 useless extension candidates. Maximal degree in co-relation 1057. Up to 191 conditions per place. [2022-11-20 11:14:25,374 INFO L137 encePairwiseOnDemand]: 285/297 looper letters, 41 selfloop transitions, 5 changer transitions 0/270 dead transitions. [2022-11-20 11:14:25,374 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 270 transitions, 665 flow [2022-11-20 11:14:25,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:14:25,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:14:25,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1573 transitions. [2022-11-20 11:14:25,407 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8827160493827161 [2022-11-20 11:14:25,408 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1573 transitions. [2022-11-20 11:14:25,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1573 transitions. [2022-11-20 11:14:25,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:14:25,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1573 transitions. [2022-11-20 11:14:25,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 262.1666666666667) internal successors, (1573), 6 states have internal predecessors, (1573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:25,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:25,444 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:25,447 INFO L175 Difference]: Start difference. First operand has 254 places, 265 transitions, 545 flow. Second operand 6 states and 1573 transitions. [2022-11-20 11:14:25,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 270 transitions, 665 flow [2022-11-20 11:14:25,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 270 transitions, 646 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 11:14:25,464 INFO L231 Difference]: Finished difference. Result has 253 places, 258 transitions, 532 flow [2022-11-20 11:14:25,467 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=532, PETRI_PLACES=253, PETRI_TRANSITIONS=258} [2022-11-20 11:14:25,475 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, -1 predicate places. [2022-11-20 11:14:25,476 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 258 transitions, 532 flow [2022-11-20 11:14:25,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:25,477 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:14:25,478 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] [2022-11-20 11:14:25,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:14:25,479 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 11:14:25,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:25,480 INFO L85 PathProgramCache]: Analyzing trace with hash 52008026, now seen corresponding path program 1 times [2022-11-20 11:14:25,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:25,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038739627] [2022-11-20 11:14:25,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:25,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:25,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:25,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:14:25,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:14:25,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038739627] [2022-11-20 11:14:25,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038739627] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:14:25,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:14:25,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:14:25,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185182303] [2022-11-20 11:14:25,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:14:25,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:14:25,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:14:25,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:14:25,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:14:25,778 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 297 [2022-11-20 11:14:25,779 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 258 transitions, 532 flow. Second operand has 4 states, 4 states have (on average 260.75) internal successors, (1043), 4 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:25,780 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:14:25,780 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 297 [2022-11-20 11:14:25,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:14:26,098 INFO L130 PetriNetUnfolder]: 94/824 cut-off events. [2022-11-20 11:14:26,098 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-11-20 11:14:26,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1077 conditions, 824 events. 94/824 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 5425 event pairs, 24 based on Foata normal form. 0/699 useless extension candidates. Maximal degree in co-relation 690. Up to 71 conditions per place. [2022-11-20 11:14:26,122 INFO L137 encePairwiseOnDemand]: 291/297 looper letters, 37 selfloop transitions, 4 changer transitions 0/272 dead transitions. [2022-11-20 11:14:26,122 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 272 transitions, 650 flow [2022-11-20 11:14:26,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:14:26,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 11:14:26,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1079 transitions. [2022-11-20 11:14:26,126 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9082491582491582 [2022-11-20 11:14:26,126 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1079 transitions. [2022-11-20 11:14:26,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1079 transitions. [2022-11-20 11:14:26,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:14:26,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1079 transitions. [2022-11-20 11:14:26,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 269.75) internal successors, (1079), 4 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:26,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:26,135 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:26,135 INFO L175 Difference]: Start difference. First operand has 253 places, 258 transitions, 532 flow. Second operand 4 states and 1079 transitions. [2022-11-20 11:14:26,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 272 transitions, 650 flow [2022-11-20 11:14:26,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 272 transitions, 641 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 11:14:26,145 INFO L231 Difference]: Finished difference. Result has 254 places, 259 transitions, 547 flow [2022-11-20 11:14:26,146 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=547, PETRI_PLACES=254, PETRI_TRANSITIONS=259} [2022-11-20 11:14:26,147 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 0 predicate places. [2022-11-20 11:14:26,147 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 259 transitions, 547 flow [2022-11-20 11:14:26,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 260.75) internal successors, (1043), 4 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:26,149 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:14:26,150 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] [2022-11-20 11:14:26,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:14:26,150 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 11:14:26,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:26,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1048203558, now seen corresponding path program 1 times [2022-11-20 11:14:26,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:26,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922041515] [2022-11-20 11:14:26,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:26,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:26,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:26,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:14:26,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:14:26,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922041515] [2022-11-20 11:14:26,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922041515] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:14:26,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:14:26,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:14:26,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126270727] [2022-11-20 11:14:26,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:14:26,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:14:26,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:14:26,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:14:26,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:14:26,444 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 297 [2022-11-20 11:14:26,447 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 259 transitions, 547 flow. Second operand has 6 states, 6 states have (on average 254.16666666666666) internal successors, (1525), 6 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:26,447 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:14:26,447 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 297 [2022-11-20 11:14:26,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:14:27,458 INFO L130 PetriNetUnfolder]: 665/3194 cut-off events. [2022-11-20 11:14:27,458 INFO L131 PetriNetUnfolder]: For 267/701 co-relation queries the response was YES. [2022-11-20 11:14:27,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4159 conditions, 3194 events. 665/3194 cut-off events. For 267/701 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 29173 event pairs, 102 based on Foata normal form. 0/2449 useless extension candidates. Maximal degree in co-relation 3087. Up to 685 conditions per place. [2022-11-20 11:14:27,518 INFO L137 encePairwiseOnDemand]: 291/297 looper letters, 40 selfloop transitions, 5 changer transitions 0/269 dead transitions. [2022-11-20 11:14:27,518 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 269 transitions, 664 flow [2022-11-20 11:14:27,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:14:27,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:14:27,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1558 transitions. [2022-11-20 11:14:27,524 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8742985409652076 [2022-11-20 11:14:27,525 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1558 transitions. [2022-11-20 11:14:27,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1558 transitions. [2022-11-20 11:14:27,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:14:27,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1558 transitions. [2022-11-20 11:14:27,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 259.6666666666667) internal successors, (1558), 6 states have internal predecessors, (1558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:27,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:27,537 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:27,537 INFO L175 Difference]: Start difference. First operand has 254 places, 259 transitions, 547 flow. Second operand 6 states and 1558 transitions. [2022-11-20 11:14:27,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 269 transitions, 664 flow [2022-11-20 11:14:27,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 269 transitions, 664 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:14:27,545 INFO L231 Difference]: Finished difference. Result has 258 places, 258 transitions, 555 flow [2022-11-20 11:14:27,546 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=545, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=555, PETRI_PLACES=258, PETRI_TRANSITIONS=258} [2022-11-20 11:14:27,549 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 4 predicate places. [2022-11-20 11:14:27,549 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 258 transitions, 555 flow [2022-11-20 11:14:27,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 254.16666666666666) internal successors, (1525), 6 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:27,550 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:14:27,550 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:14:27,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:14:27,551 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 11:14:27,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:27,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1865427256, now seen corresponding path program 1 times [2022-11-20 11:14:27,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:27,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812155959] [2022-11-20 11:14:27,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:27,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:27,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:27,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:14:27,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:14:27,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812155959] [2022-11-20 11:14:27,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812155959] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:14:27,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:14:27,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:14:27,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475269127] [2022-11-20 11:14:27,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:14:27,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:14:27,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:14:27,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:14:27,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:14:27,676 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 297 [2022-11-20 11:14:27,677 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 258 transitions, 555 flow. Second operand has 4 states, 4 states have (on average 261.0) internal successors, (1044), 4 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:27,678 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:14:27,678 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 297 [2022-11-20 11:14:27,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:14:28,111 INFO L130 PetriNetUnfolder]: 143/991 cut-off events. [2022-11-20 11:14:28,112 INFO L131 PetriNetUnfolder]: For 104/394 co-relation queries the response was YES. [2022-11-20 11:14:28,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1355 conditions, 991 events. 143/991 cut-off events. For 104/394 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7237 event pairs, 48 based on Foata normal form. 0/817 useless extension candidates. Maximal degree in co-relation 1100. Up to 126 conditions per place. [2022-11-20 11:14:28,153 INFO L137 encePairwiseOnDemand]: 291/297 looper letters, 36 selfloop transitions, 4 changer transitions 0/271 dead transitions. [2022-11-20 11:14:28,153 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 271 transitions, 668 flow [2022-11-20 11:14:28,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:14:28,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 11:14:28,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1078 transitions. [2022-11-20 11:14:28,157 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9074074074074074 [2022-11-20 11:14:28,157 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1078 transitions. [2022-11-20 11:14:28,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1078 transitions. [2022-11-20 11:14:28,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:14:28,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1078 transitions. [2022-11-20 11:14:28,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 269.5) internal successors, (1078), 4 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:28,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:28,171 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:28,172 INFO L175 Difference]: Start difference. First operand has 258 places, 258 transitions, 555 flow. Second operand 4 states and 1078 transitions. [2022-11-20 11:14:28,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 271 transitions, 668 flow [2022-11-20 11:14:28,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 271 transitions, 659 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 11:14:28,179 INFO L231 Difference]: Finished difference. Result has 259 places, 259 transitions, 570 flow [2022-11-20 11:14:28,180 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=570, PETRI_PLACES=259, PETRI_TRANSITIONS=259} [2022-11-20 11:14:28,187 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 5 predicate places. [2022-11-20 11:14:28,187 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 259 transitions, 570 flow [2022-11-20 11:14:28,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 261.0) internal successors, (1044), 4 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:28,188 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:14:28,189 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] [2022-11-20 11:14:28,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:14:28,189 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 11:14:28,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:28,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1830481599, now seen corresponding path program 1 times [2022-11-20 11:14:28,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:28,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178912566] [2022-11-20 11:14:28,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:28,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:28,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:28,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:14:28,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:14:28,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178912566] [2022-11-20 11:14:28,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178912566] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:14:28,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:14:28,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:14:28,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830847435] [2022-11-20 11:14:28,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:14:28,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:14:28,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:14:28,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:14:28,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:14:28,333 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 297 [2022-11-20 11:14:28,335 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 259 transitions, 570 flow. Second operand has 4 states, 4 states have (on average 261.25) internal successors, (1045), 4 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:28,335 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:14:28,335 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 297 [2022-11-20 11:14:28,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:14:28,703 INFO L130 PetriNetUnfolder]: 88/974 cut-off events. [2022-11-20 11:14:28,703 INFO L131 PetriNetUnfolder]: For 55/113 co-relation queries the response was YES. [2022-11-20 11:14:28,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1294 conditions, 974 events. 88/974 cut-off events. For 55/113 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 6784 event pairs, 24 based on Foata normal form. 5/854 useless extension candidates. Maximal degree in co-relation 1112. Up to 72 conditions per place. [2022-11-20 11:14:28,734 INFO L137 encePairwiseOnDemand]: 293/297 looper letters, 37 selfloop transitions, 3 changer transitions 0/271 dead transitions. [2022-11-20 11:14:28,734 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 271 transitions, 678 flow [2022-11-20 11:14:28,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:14:28,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 11:14:28,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1077 transitions. [2022-11-20 11:14:28,738 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9065656565656566 [2022-11-20 11:14:28,738 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1077 transitions. [2022-11-20 11:14:28,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1077 transitions. [2022-11-20 11:14:28,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:14:28,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1077 transitions. [2022-11-20 11:14:28,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 269.25) internal successors, (1077), 4 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:28,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:28,747 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:28,747 INFO L175 Difference]: Start difference. First operand has 259 places, 259 transitions, 570 flow. Second operand 4 states and 1077 transitions. [2022-11-20 11:14:28,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 271 transitions, 678 flow [2022-11-20 11:14:28,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 271 transitions, 676 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:14:28,754 INFO L231 Difference]: Finished difference. Result has 261 places, 258 transitions, 568 flow [2022-11-20 11:14:28,755 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=568, PETRI_PLACES=261, PETRI_TRANSITIONS=258} [2022-11-20 11:14:28,756 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 7 predicate places. [2022-11-20 11:14:28,756 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 258 transitions, 568 flow [2022-11-20 11:14:28,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 261.25) internal successors, (1045), 4 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:28,757 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:14:28,758 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] [2022-11-20 11:14:28,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:14:28,758 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 11:14:28,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:28,759 INFO L85 PathProgramCache]: Analyzing trace with hash -910353957, now seen corresponding path program 1 times [2022-11-20 11:14:28,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:28,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634674284] [2022-11-20 11:14:28,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:28,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:28,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:28,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:14:28,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:14:28,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634674284] [2022-11-20 11:14:28,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634674284] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:14:28,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:14:28,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:14:28,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240124304] [2022-11-20 11:14:28,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:14:28,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:14:28,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:14:28,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:14:28,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:14:28,881 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 297 [2022-11-20 11:14:28,883 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 258 transitions, 568 flow. Second operand has 6 states, 6 states have (on average 254.33333333333334) internal successors, (1526), 6 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:28,883 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:14:28,883 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 297 [2022-11-20 11:14:28,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:14:29,536 INFO L130 PetriNetUnfolder]: 207/1478 cut-off events. [2022-11-20 11:14:29,537 INFO L131 PetriNetUnfolder]: For 75/324 co-relation queries the response was YES. [2022-11-20 11:14:29,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2011 conditions, 1478 events. 207/1478 cut-off events. For 75/324 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 10973 event pairs, 22 based on Foata normal form. 4/1242 useless extension candidates. Maximal degree in co-relation 1827. Up to 282 conditions per place. [2022-11-20 11:14:29,594 INFO L137 encePairwiseOnDemand]: 291/297 looper letters, 39 selfloop transitions, 5 changer transitions 0/269 dead transitions. [2022-11-20 11:14:29,594 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 269 transitions, 686 flow [2022-11-20 11:14:29,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:14:29,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:14:29,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1557 transitions. [2022-11-20 11:14:29,599 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8737373737373737 [2022-11-20 11:14:29,599 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1557 transitions. [2022-11-20 11:14:29,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1557 transitions. [2022-11-20 11:14:29,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:14:29,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1557 transitions. [2022-11-20 11:14:29,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 259.5) internal successors, (1557), 6 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:29,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:29,611 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:29,611 INFO L175 Difference]: Start difference. First operand has 261 places, 258 transitions, 568 flow. Second operand 6 states and 1557 transitions. [2022-11-20 11:14:29,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 269 transitions, 686 flow [2022-11-20 11:14:29,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 269 transitions, 681 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 11:14:29,620 INFO L231 Difference]: Finished difference. Result has 263 places, 257 transitions, 571 flow [2022-11-20 11:14:29,620 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=571, PETRI_PLACES=263, PETRI_TRANSITIONS=257} [2022-11-20 11:14:29,623 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 9 predicate places. [2022-11-20 11:14:29,624 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 257 transitions, 571 flow [2022-11-20 11:14:29,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 254.33333333333334) internal successors, (1526), 6 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:29,625 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:14:29,625 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] [2022-11-20 11:14:29,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:14:29,626 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 11:14:29,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:29,626 INFO L85 PathProgramCache]: Analyzing trace with hash -70818009, now seen corresponding path program 1 times [2022-11-20 11:14:29,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:29,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302941910] [2022-11-20 11:14:29,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:29,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:29,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:29,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:14:29,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:14:29,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302941910] [2022-11-20 11:14:29,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302941910] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:14:29,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:14:29,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:14:29,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850310715] [2022-11-20 11:14:29,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:14:29,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:14:29,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:14:29,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:14:29,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:14:29,754 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 297 [2022-11-20 11:14:29,756 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 257 transitions, 571 flow. Second operand has 6 states, 6 states have (on average 254.33333333333334) internal successors, (1526), 6 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:29,757 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:14:29,757 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 297 [2022-11-20 11:14:29,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:14:30,568 INFO L130 PetriNetUnfolder]: 762/3216 cut-off events. [2022-11-20 11:14:30,568 INFO L131 PetriNetUnfolder]: For 436/446 co-relation queries the response was YES. [2022-11-20 11:14:30,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4508 conditions, 3216 events. 762/3216 cut-off events. For 436/446 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 29158 event pairs, 78 based on Foata normal form. 0/2473 useless extension candidates. Maximal degree in co-relation 4293. Up to 920 conditions per place. [2022-11-20 11:14:30,676 INFO L137 encePairwiseOnDemand]: 291/297 looper letters, 39 selfloop transitions, 5 changer transitions 0/266 dead transitions. [2022-11-20 11:14:30,676 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 266 transitions, 681 flow [2022-11-20 11:14:30,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:14:30,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:14:30,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1557 transitions. [2022-11-20 11:14:30,680 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8737373737373737 [2022-11-20 11:14:30,681 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1557 transitions. [2022-11-20 11:14:30,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1557 transitions. [2022-11-20 11:14:30,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:14:30,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1557 transitions. [2022-11-20 11:14:30,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 259.5) internal successors, (1557), 6 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:30,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:30,690 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:30,690 INFO L175 Difference]: Start difference. First operand has 263 places, 257 transitions, 571 flow. Second operand 6 states and 1557 transitions. [2022-11-20 11:14:30,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 266 transitions, 681 flow [2022-11-20 11:14:30,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 266 transitions, 672 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 11:14:30,696 INFO L231 Difference]: Finished difference. Result has 263 places, 256 transitions, 570 flow [2022-11-20 11:14:30,697 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=570, PETRI_PLACES=263, PETRI_TRANSITIONS=256} [2022-11-20 11:14:30,697 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 9 predicate places. [2022-11-20 11:14:30,698 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 256 transitions, 570 flow [2022-11-20 11:14:30,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 254.33333333333334) internal successors, (1526), 6 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:30,699 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:14:30,699 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] [2022-11-20 11:14:30,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:14:30,699 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 11:14:30,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:30,700 INFO L85 PathProgramCache]: Analyzing trace with hash -2096438850, now seen corresponding path program 1 times [2022-11-20 11:14:30,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:30,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745904901] [2022-11-20 11:14:30,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:30,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:30,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:30,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:14:30,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:14:30,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745904901] [2022-11-20 11:14:30,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745904901] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:14:30,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:14:30,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:14:30,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788914636] [2022-11-20 11:14:30,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:14:30,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:14:30,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:14:30,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:14:30,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:14:30,826 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 297 [2022-11-20 11:14:30,827 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 256 transitions, 570 flow. Second operand has 5 states, 5 states have (on average 257.6) internal successors, (1288), 5 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:30,827 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:14:30,828 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 297 [2022-11-20 11:14:30,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:14:31,126 INFO L130 PetriNetUnfolder]: 99/1027 cut-off events. [2022-11-20 11:14:31,127 INFO L131 PetriNetUnfolder]: For 35/107 co-relation queries the response was YES. [2022-11-20 11:14:31,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1412 conditions, 1027 events. 99/1027 cut-off events. For 35/107 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 7342 event pairs, 30 based on Foata normal form. 4/912 useless extension candidates. Maximal degree in co-relation 1230. Up to 90 conditions per place. [2022-11-20 11:14:31,155 INFO L137 encePairwiseOnDemand]: 290/297 looper letters, 44 selfloop transitions, 7 changer transitions 0/277 dead transitions. [2022-11-20 11:14:31,155 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 277 transitions, 726 flow [2022-11-20 11:14:31,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:14:31,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:14:31,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1582 transitions. [2022-11-20 11:14:31,160 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8877665544332211 [2022-11-20 11:14:31,160 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1582 transitions. [2022-11-20 11:14:31,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1582 transitions. [2022-11-20 11:14:31,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:14:31,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1582 transitions. [2022-11-20 11:14:31,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 263.6666666666667) internal successors, (1582), 6 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:31,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:31,169 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:31,169 INFO L175 Difference]: Start difference. First operand has 263 places, 256 transitions, 570 flow. Second operand 6 states and 1582 transitions. [2022-11-20 11:14:31,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 277 transitions, 726 flow [2022-11-20 11:14:31,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 277 transitions, 712 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-11-20 11:14:31,176 INFO L231 Difference]: Finished difference. Result has 264 places, 259 transitions, 591 flow [2022-11-20 11:14:31,176 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=591, PETRI_PLACES=264, PETRI_TRANSITIONS=259} [2022-11-20 11:14:31,177 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 10 predicate places. [2022-11-20 11:14:31,177 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 259 transitions, 591 flow [2022-11-20 11:14:31,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 257.6) internal successors, (1288), 5 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:31,178 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:14:31,179 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] [2022-11-20 11:14:31,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:14:31,179 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 11:14:31,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:31,180 INFO L85 PathProgramCache]: Analyzing trace with hash 2099609898, now seen corresponding path program 1 times [2022-11-20 11:14:31,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:31,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162998988] [2022-11-20 11:14:31,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:31,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:31,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:31,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:14:31,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:14:31,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162998988] [2022-11-20 11:14:31,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162998988] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:14:31,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:14:31,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:14:31,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841561735] [2022-11-20 11:14:31,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:14:31,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:14:31,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:14:31,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:14:31,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:14:31,248 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 297 [2022-11-20 11:14:31,249 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 259 transitions, 591 flow. Second operand has 4 states, 4 states have (on average 261.25) internal successors, (1045), 4 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:31,249 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:14:31,249 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 297 [2022-11-20 11:14:31,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:14:31,792 INFO L130 PetriNetUnfolder]: 371/1844 cut-off events. [2022-11-20 11:14:31,792 INFO L131 PetriNetUnfolder]: For 358/618 co-relation queries the response was YES. [2022-11-20 11:14:31,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2646 conditions, 1844 events. 371/1844 cut-off events. For 358/618 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 17860 event pairs, 144 based on Foata normal form. 0/1425 useless extension candidates. Maximal degree in co-relation 2575. Up to 338 conditions per place. [2022-11-20 11:14:31,825 INFO L137 encePairwiseOnDemand]: 291/297 looper letters, 35 selfloop transitions, 4 changer transitions 0/271 dead transitions. [2022-11-20 11:14:31,826 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 271 transitions, 697 flow [2022-11-20 11:14:31,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:14:31,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 11:14:31,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1077 transitions. [2022-11-20 11:14:31,830 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9065656565656566 [2022-11-20 11:14:31,830 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1077 transitions. [2022-11-20 11:14:31,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1077 transitions. [2022-11-20 11:14:31,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:14:31,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1077 transitions. [2022-11-20 11:14:31,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 269.25) internal successors, (1077), 4 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:31,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:31,837 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:31,838 INFO L175 Difference]: Start difference. First operand has 264 places, 259 transitions, 591 flow. Second operand 4 states and 1077 transitions. [2022-11-20 11:14:31,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 271 transitions, 697 flow [2022-11-20 11:14:31,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 271 transitions, 694 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:14:31,844 INFO L231 Difference]: Finished difference. Result has 268 places, 260 transitions, 612 flow [2022-11-20 11:14:31,845 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=612, PETRI_PLACES=268, PETRI_TRANSITIONS=260} [2022-11-20 11:14:31,846 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 14 predicate places. [2022-11-20 11:14:31,846 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 260 transitions, 612 flow [2022-11-20 11:14:31,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 261.25) internal successors, (1045), 4 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:31,847 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:14:31,848 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] [2022-11-20 11:14:31,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:14:31,848 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 11:14:31,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:31,849 INFO L85 PathProgramCache]: Analyzing trace with hash -487221457, now seen corresponding path program 1 times [2022-11-20 11:14:31,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:31,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865652022] [2022-11-20 11:14:31,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:31,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:31,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:31,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:14:31,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:14:31,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865652022] [2022-11-20 11:14:31,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865652022] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:14:31,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:14:31,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:14:31,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600651873] [2022-11-20 11:14:31,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:14:31,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:14:31,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:14:31,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:14:31,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:14:31,918 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 297 [2022-11-20 11:14:31,920 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 260 transitions, 612 flow. Second operand has 4 states, 4 states have (on average 261.5) internal successors, (1046), 4 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:31,920 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:14:31,920 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 297 [2022-11-20 11:14:31,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:14:32,327 INFO L130 PetriNetUnfolder]: 134/1125 cut-off events. [2022-11-20 11:14:32,328 INFO L131 PetriNetUnfolder]: For 168/458 co-relation queries the response was YES. [2022-11-20 11:14:32,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1577 conditions, 1125 events. 134/1125 cut-off events. For 168/458 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 8766 event pairs, 48 based on Foata normal form. 5/965 useless extension candidates. Maximal degree in co-relation 1403. Up to 121 conditions per place. [2022-11-20 11:14:32,361 INFO L137 encePairwiseOnDemand]: 293/297 looper letters, 36 selfloop transitions, 3 changer transitions 0/271 dead transitions. [2022-11-20 11:14:32,361 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 271 transitions, 715 flow [2022-11-20 11:14:32,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:14:32,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 11:14:32,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1076 transitions. [2022-11-20 11:14:32,365 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9057239057239057 [2022-11-20 11:14:32,365 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1076 transitions. [2022-11-20 11:14:32,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1076 transitions. [2022-11-20 11:14:32,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:14:32,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1076 transitions. [2022-11-20 11:14:32,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:32,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:32,372 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:32,372 INFO L175 Difference]: Start difference. First operand has 268 places, 260 transitions, 612 flow. Second operand 4 states and 1076 transitions. [2022-11-20 11:14:32,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 271 transitions, 715 flow [2022-11-20 11:14:32,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 271 transitions, 713 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:14:32,379 INFO L231 Difference]: Finished difference. Result has 270 places, 259 transitions, 610 flow [2022-11-20 11:14:32,381 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=610, PETRI_PLACES=270, PETRI_TRANSITIONS=259} [2022-11-20 11:14:32,382 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 16 predicate places. [2022-11-20 11:14:32,382 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 259 transitions, 610 flow [2022-11-20 11:14:32,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 261.5) internal successors, (1046), 4 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:32,383 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:14:32,383 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] [2022-11-20 11:14:32,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 11:14:32,383 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 11:14:32,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:32,384 INFO L85 PathProgramCache]: Analyzing trace with hash 2076004848, now seen corresponding path program 1 times [2022-11-20 11:14:32,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:32,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979110901] [2022-11-20 11:14:32,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:32,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:32,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:32,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:14:32,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:14:32,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979110901] [2022-11-20 11:14:32,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979110901] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:14:32,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:14:32,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:14:32,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328870552] [2022-11-20 11:14:32,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:14:32,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:14:32,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:14:32,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:14:32,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:14:32,487 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 297 [2022-11-20 11:14:32,488 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 259 transitions, 610 flow. Second operand has 6 states, 6 states have (on average 254.5) internal successors, (1527), 6 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:32,489 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:14:32,489 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 297 [2022-11-20 11:14:32,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:14:33,593 INFO L130 PetriNetUnfolder]: 726/4156 cut-off events. [2022-11-20 11:14:33,593 INFO L131 PetriNetUnfolder]: For 454/506 co-relation queries the response was YES. [2022-11-20 11:14:33,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5746 conditions, 4156 events. 726/4156 cut-off events. For 454/506 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 41713 event pairs, 68 based on Foata normal form. 0/3422 useless extension candidates. Maximal degree in co-relation 5426. Up to 899 conditions per place. [2022-11-20 11:14:33,676 INFO L137 encePairwiseOnDemand]: 291/297 looper letters, 38 selfloop transitions, 5 changer transitions 0/269 dead transitions. [2022-11-20 11:14:33,676 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 269 transitions, 723 flow [2022-11-20 11:14:33,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:14:33,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:14:33,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1556 transitions. [2022-11-20 11:14:33,681 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8731762065095399 [2022-11-20 11:14:33,682 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1556 transitions. [2022-11-20 11:14:33,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1556 transitions. [2022-11-20 11:14:33,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:14:33,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1556 transitions. [2022-11-20 11:14:33,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 259.3333333333333) internal successors, (1556), 6 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:33,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:33,691 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:33,692 INFO L175 Difference]: Start difference. First operand has 270 places, 259 transitions, 610 flow. Second operand 6 states and 1556 transitions. [2022-11-20 11:14:33,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 269 transitions, 723 flow [2022-11-20 11:14:33,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 269 transitions, 718 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 11:14:33,700 INFO L231 Difference]: Finished difference. Result has 272 places, 258 transitions, 613 flow [2022-11-20 11:14:33,701 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=603, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=613, PETRI_PLACES=272, PETRI_TRANSITIONS=258} [2022-11-20 11:14:33,702 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 18 predicate places. [2022-11-20 11:14:33,702 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 258 transitions, 613 flow [2022-11-20 11:14:33,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 254.5) internal successors, (1527), 6 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:33,703 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:14:33,703 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] [2022-11-20 11:14:33,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 11:14:33,704 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 11:14:33,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:33,704 INFO L85 PathProgramCache]: Analyzing trace with hash -67843808, now seen corresponding path program 1 times [2022-11-20 11:14:33,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:33,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81344660] [2022-11-20 11:14:33,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:33,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:33,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:33,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:14:33,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:14:33,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81344660] [2022-11-20 11:14:33,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81344660] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:14:33,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:14:33,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:14:33,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989629815] [2022-11-20 11:14:33,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:14:33,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:14:33,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:14:33,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:14:33,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:14:33,851 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 297 [2022-11-20 11:14:33,853 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 258 transitions, 613 flow. Second operand has 8 states, 8 states have (on average 249.125) internal successors, (1993), 8 states have internal predecessors, (1993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:33,854 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:14:33,854 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 297 [2022-11-20 11:14:33,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:14:34,799 INFO L130 PetriNetUnfolder]: 447/3165 cut-off events. [2022-11-20 11:14:34,799 INFO L131 PetriNetUnfolder]: For 243/243 co-relation queries the response was YES. [2022-11-20 11:14:34,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4657 conditions, 3165 events. 447/3165 cut-off events. For 243/243 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 30456 event pairs, 32 based on Foata normal form. 0/2778 useless extension candidates. Maximal degree in co-relation 4283. Up to 309 conditions per place. [2022-11-20 11:14:34,874 INFO L137 encePairwiseOnDemand]: 287/297 looper letters, 53 selfloop transitions, 11 changer transitions 0/282 dead transitions. [2022-11-20 11:14:34,875 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 282 transitions, 811 flow [2022-11-20 11:14:34,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:14:34,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 11:14:34,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2038 transitions. [2022-11-20 11:14:34,881 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8577441077441077 [2022-11-20 11:14:34,881 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2038 transitions. [2022-11-20 11:14:34,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2038 transitions. [2022-11-20 11:14:34,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:14:34,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2038 transitions. [2022-11-20 11:14:34,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 254.75) internal successors, (2038), 8 states have internal predecessors, (2038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:34,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 297.0) internal successors, (2673), 9 states have internal predecessors, (2673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:34,894 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 297.0) internal successors, (2673), 9 states have internal predecessors, (2673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:34,895 INFO L175 Difference]: Start difference. First operand has 272 places, 258 transitions, 613 flow. Second operand 8 states and 2038 transitions. [2022-11-20 11:14:34,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 282 transitions, 811 flow [2022-11-20 11:14:34,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 282 transitions, 794 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 11:14:34,903 INFO L231 Difference]: Finished difference. Result has 277 places, 259 transitions, 640 flow [2022-11-20 11:14:34,904 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=640, PETRI_PLACES=277, PETRI_TRANSITIONS=259} [2022-11-20 11:14:34,905 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 23 predicate places. [2022-11-20 11:14:34,905 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 259 transitions, 640 flow [2022-11-20 11:14:34,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 249.125) internal successors, (1993), 8 states have internal predecessors, (1993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:34,906 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:14:34,906 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] [2022-11-20 11:14:34,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 11:14:34,907 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 11:14:34,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:34,907 INFO L85 PathProgramCache]: Analyzing trace with hash -2103157272, now seen corresponding path program 1 times [2022-11-20 11:14:34,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:34,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553687527] [2022-11-20 11:14:34,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:34,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:34,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:35,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:14:35,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:14:35,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553687527] [2022-11-20 11:14:35,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553687527] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:14:35,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:14:35,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:14:35,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671289185] [2022-11-20 11:14:35,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:14:35,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:14:35,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:14:35,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:14:35,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:14:35,068 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 297 [2022-11-20 11:14:35,071 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 259 transitions, 640 flow. Second operand has 8 states, 8 states have (on average 249.25) internal successors, (1994), 8 states have internal predecessors, (1994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:35,071 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:14:35,071 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 297 [2022-11-20 11:14:35,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:14:36,066 INFO L130 PetriNetUnfolder]: 371/2212 cut-off events. [2022-11-20 11:14:36,066 INFO L131 PetriNetUnfolder]: For 231/231 co-relation queries the response was YES. [2022-11-20 11:14:36,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3549 conditions, 2212 events. 371/2212 cut-off events. For 231/231 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 18993 event pairs, 28 based on Foata normal form. 0/1963 useless extension candidates. Maximal degree in co-relation 3481. Up to 289 conditions per place. [2022-11-20 11:14:36,143 INFO L137 encePairwiseOnDemand]: 287/297 looper letters, 55 selfloop transitions, 9 changer transitions 0/284 dead transitions. [2022-11-20 11:14:36,144 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 284 transitions, 834 flow [2022-11-20 11:14:36,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:14:36,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 11:14:36,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2040 transitions. [2022-11-20 11:14:36,151 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8585858585858586 [2022-11-20 11:14:36,151 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2040 transitions. [2022-11-20 11:14:36,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2040 transitions. [2022-11-20 11:14:36,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:14:36,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2040 transitions. [2022-11-20 11:14:36,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 255.0) internal successors, (2040), 8 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:36,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 297.0) internal successors, (2673), 9 states have internal predecessors, (2673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:36,166 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 297.0) internal successors, (2673), 9 states have internal predecessors, (2673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:36,166 INFO L175 Difference]: Start difference. First operand has 277 places, 259 transitions, 640 flow. Second operand 8 states and 2040 transitions. [2022-11-20 11:14:36,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 284 transitions, 834 flow [2022-11-20 11:14:36,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 284 transitions, 825 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 11:14:36,176 INFO L231 Difference]: Finished difference. Result has 282 places, 260 transitions, 661 flow [2022-11-20 11:14:36,176 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=631, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=661, PETRI_PLACES=282, PETRI_TRANSITIONS=260} [2022-11-20 11:14:36,177 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 28 predicate places. [2022-11-20 11:14:36,177 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 260 transitions, 661 flow [2022-11-20 11:14:36,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 249.25) internal successors, (1994), 8 states have internal predecessors, (1994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:36,179 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:14:36,179 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] [2022-11-20 11:14:36,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 11:14:36,179 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 11:14:36,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:36,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1243778829, now seen corresponding path program 1 times [2022-11-20 11:14:36,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:36,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539456557] [2022-11-20 11:14:36,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:36,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:36,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:36,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:14:36,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:14:36,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539456557] [2022-11-20 11:14:36,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539456557] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:14:36,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:14:36,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:14:36,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648153025] [2022-11-20 11:14:36,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:14:36,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:14:36,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:14:36,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:14:36,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:14:36,290 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 297 [2022-11-20 11:14:36,291 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 260 transitions, 661 flow. Second operand has 5 states, 5 states have (on average 257.8) internal successors, (1289), 5 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:36,292 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:14:36,292 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 297 [2022-11-20 11:14:36,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:14:36,826 INFO L130 PetriNetUnfolder]: 162/1177 cut-off events. [2022-11-20 11:14:36,826 INFO L131 PetriNetUnfolder]: For 172/532 co-relation queries the response was YES. [2022-11-20 11:14:36,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1736 conditions, 1177 events. 162/1177 cut-off events. For 172/532 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 9626 event pairs, 60 based on Foata normal form. 0/1011 useless extension candidates. Maximal degree in co-relation 1558. Up to 153 conditions per place. [2022-11-20 11:14:36,865 INFO L137 encePairwiseOnDemand]: 290/297 looper letters, 43 selfloop transitions, 7 changer transitions 0/280 dead transitions. [2022-11-20 11:14:36,866 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 280 transitions, 812 flow [2022-11-20 11:14:36,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:14:36,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:14:36,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1581 transitions. [2022-11-20 11:14:36,871 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8872053872053872 [2022-11-20 11:14:36,871 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1581 transitions. [2022-11-20 11:14:36,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1581 transitions. [2022-11-20 11:14:36,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:14:36,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1581 transitions. [2022-11-20 11:14:36,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 263.5) internal successors, (1581), 6 states have internal predecessors, (1581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:36,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:36,917 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:36,918 INFO L175 Difference]: Start difference. First operand has 282 places, 260 transitions, 661 flow. Second operand 6 states and 1581 transitions. [2022-11-20 11:14:36,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 280 transitions, 812 flow [2022-11-20 11:14:36,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 280 transitions, 798 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-11-20 11:14:36,924 INFO L231 Difference]: Finished difference. Result has 283 places, 263 transitions, 682 flow [2022-11-20 11:14:36,924 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=643, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=682, PETRI_PLACES=283, PETRI_TRANSITIONS=263} [2022-11-20 11:14:36,925 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 29 predicate places. [2022-11-20 11:14:36,925 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 263 transitions, 682 flow [2022-11-20 11:14:36,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 257.8) internal successors, (1289), 5 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:36,926 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:14:36,926 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] [2022-11-20 11:14:36,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 11:14:36,926 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 11:14:36,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:36,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1568430316, now seen corresponding path program 1 times [2022-11-20 11:14:36,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:36,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871242423] [2022-11-20 11:14:36,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:36,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:36,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:37,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:14:37,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:14:37,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871242423] [2022-11-20 11:14:37,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871242423] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:14:37,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:14:37,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:14:37,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438456904] [2022-11-20 11:14:37,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:14:37,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:14:37,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:14:37,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:14:37,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:14:37,084 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 297 [2022-11-20 11:14:37,086 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 263 transitions, 682 flow. Second operand has 6 states, 6 states have (on average 252.33333333333334) internal successors, (1514), 6 states have internal predecessors, (1514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:37,086 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:14:37,086 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 297 [2022-11-20 11:14:37,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:14:37,569 INFO L130 PetriNetUnfolder]: 119/944 cut-off events. [2022-11-20 11:14:37,569 INFO L131 PetriNetUnfolder]: For 132/136 co-relation queries the response was YES. [2022-11-20 11:14:37,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1582 conditions, 944 events. 119/944 cut-off events. For 132/136 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 6636 event pairs, 58 based on Foata normal form. 3/869 useless extension candidates. Maximal degree in co-relation 1459. Up to 153 conditions per place. [2022-11-20 11:14:37,605 INFO L137 encePairwiseOnDemand]: 289/297 looper letters, 49 selfloop transitions, 7 changer transitions 0/279 dead transitions. [2022-11-20 11:14:37,605 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 279 transitions, 841 flow [2022-11-20 11:14:37,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:14:37,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:14:37,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1796 transitions. [2022-11-20 11:14:37,611 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8638768638768639 [2022-11-20 11:14:37,611 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1796 transitions. [2022-11-20 11:14:37,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1796 transitions. [2022-11-20 11:14:37,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:14:37,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1796 transitions. [2022-11-20 11:14:37,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 256.57142857142856) internal successors, (1796), 7 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:37,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 297.0) internal successors, (2376), 8 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:37,622 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 297.0) internal successors, (2376), 8 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:37,622 INFO L175 Difference]: Start difference. First operand has 283 places, 263 transitions, 682 flow. Second operand 7 states and 1796 transitions. [2022-11-20 11:14:37,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 279 transitions, 841 flow [2022-11-20 11:14:37,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 279 transitions, 835 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 11:14:37,631 INFO L231 Difference]: Finished difference. Result has 290 places, 266 transitions, 712 flow [2022-11-20 11:14:37,632 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=672, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=712, PETRI_PLACES=290, PETRI_TRANSITIONS=266} [2022-11-20 11:14:37,634 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 36 predicate places. [2022-11-20 11:14:37,634 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 266 transitions, 712 flow [2022-11-20 11:14:37,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 252.33333333333334) internal successors, (1514), 6 states have internal predecessors, (1514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:37,635 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:14:37,635 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] [2022-11-20 11:14:37,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 11:14:37,636 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 11:14:37,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:37,636 INFO L85 PathProgramCache]: Analyzing trace with hash 2103730533, now seen corresponding path program 1 times [2022-11-20 11:14:37,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:37,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972423153] [2022-11-20 11:14:37,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:37,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:37,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:37,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:14:37,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:14:37,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972423153] [2022-11-20 11:14:37,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972423153] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:14:37,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:14:37,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:14:37,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322824130] [2022-11-20 11:14:37,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:14:37,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:14:37,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:14:37,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:14:37,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:14:37,803 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 297 [2022-11-20 11:14:37,804 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 266 transitions, 712 flow. Second operand has 6 states, 6 states have (on average 252.5) internal successors, (1515), 6 states have internal predecessors, (1515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:37,805 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:14:37,805 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 297 [2022-11-20 11:14:37,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:14:38,280 INFO L130 PetriNetUnfolder]: 113/935 cut-off events. [2022-11-20 11:14:38,280 INFO L131 PetriNetUnfolder]: For 146/150 co-relation queries the response was YES. [2022-11-20 11:14:38,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1628 conditions, 935 events. 113/935 cut-off events. For 146/150 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 6545 event pairs, 46 based on Foata normal form. 3/874 useless extension candidates. Maximal degree in co-relation 1502. Up to 126 conditions per place. [2022-11-20 11:14:38,314 INFO L137 encePairwiseOnDemand]: 289/297 looper letters, 55 selfloop transitions, 8 changer transitions 0/288 dead transitions. [2022-11-20 11:14:38,314 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 288 transitions, 914 flow [2022-11-20 11:14:38,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:14:38,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:14:38,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1802 transitions. [2022-11-20 11:14:38,319 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8667628667628667 [2022-11-20 11:14:38,319 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1802 transitions. [2022-11-20 11:14:38,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1802 transitions. [2022-11-20 11:14:38,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:14:38,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1802 transitions. [2022-11-20 11:14:38,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 257.42857142857144) internal successors, (1802), 7 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:38,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 297.0) internal successors, (2376), 8 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:38,330 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 297.0) internal successors, (2376), 8 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:38,331 INFO L175 Difference]: Start difference. First operand has 290 places, 266 transitions, 712 flow. Second operand 7 states and 1802 transitions. [2022-11-20 11:14:38,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 288 transitions, 914 flow [2022-11-20 11:14:38,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 288 transitions, 912 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:14:38,340 INFO L231 Difference]: Finished difference. Result has 298 places, 270 transitions, 759 flow [2022-11-20 11:14:38,341 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=706, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=759, PETRI_PLACES=298, PETRI_TRANSITIONS=270} [2022-11-20 11:14:38,342 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 44 predicate places. [2022-11-20 11:14:38,342 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 270 transitions, 759 flow [2022-11-20 11:14:38,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 252.5) internal successors, (1515), 6 states have internal predecessors, (1515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:38,345 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:14:38,346 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] [2022-11-20 11:14:38,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 11:14:38,346 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 11:14:38,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:38,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1552437521, now seen corresponding path program 1 times [2022-11-20 11:14:38,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:38,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18470082] [2022-11-20 11:14:38,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:38,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:38,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:38,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:14:38,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:14:38,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18470082] [2022-11-20 11:14:38,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18470082] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:14:38,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:14:38,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:14:38,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16437322] [2022-11-20 11:14:38,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:14:38,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:14:38,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:14:38,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:14:38,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:14:38,426 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 297 [2022-11-20 11:14:38,428 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 270 transitions, 759 flow. Second operand has 4 states, 4 states have (on average 261.75) internal successors, (1047), 4 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:38,428 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:14:38,428 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 297 [2022-11-20 11:14:38,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:14:39,019 INFO L130 PetriNetUnfolder]: 357/1832 cut-off events. [2022-11-20 11:14:39,020 INFO L131 PetriNetUnfolder]: For 526/786 co-relation queries the response was YES. [2022-11-20 11:14:39,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2829 conditions, 1832 events. 357/1832 cut-off events. For 526/786 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 17624 event pairs, 144 based on Foata normal form. 13/1463 useless extension candidates. Maximal degree in co-relation 2744. Up to 316 conditions per place. [2022-11-20 11:14:39,061 INFO L137 encePairwiseOnDemand]: 293/297 looper letters, 35 selfloop transitions, 3 changer transitions 0/280 dead transitions. [2022-11-20 11:14:39,062 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 280 transitions, 855 flow [2022-11-20 11:14:39,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:14:39,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 11:14:39,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1075 transitions. [2022-11-20 11:14:39,066 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9048821548821548 [2022-11-20 11:14:39,066 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1075 transitions. [2022-11-20 11:14:39,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1075 transitions. [2022-11-20 11:14:39,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:14:39,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1075 transitions. [2022-11-20 11:14:39,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 268.75) internal successors, (1075), 4 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:39,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:39,073 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:39,073 INFO L175 Difference]: Start difference. First operand has 298 places, 270 transitions, 759 flow. Second operand 4 states and 1075 transitions. [2022-11-20 11:14:39,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 280 transitions, 855 flow [2022-11-20 11:14:39,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 280 transitions, 853 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:14:39,081 INFO L231 Difference]: Finished difference. Result has 300 places, 269 transitions, 757 flow [2022-11-20 11:14:39,082 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=751, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=757, PETRI_PLACES=300, PETRI_TRANSITIONS=269} [2022-11-20 11:14:39,083 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 46 predicate places. [2022-11-20 11:14:39,083 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 269 transitions, 757 flow [2022-11-20 11:14:39,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 261.75) internal successors, (1047), 4 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:39,084 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:14:39,084 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] [2022-11-20 11:14:39,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 11:14:39,084 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 11:14:39,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:39,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1475489429, now seen corresponding path program 1 times [2022-11-20 11:14:39,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:39,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67666949] [2022-11-20 11:14:39,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:39,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:39,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:39,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:14:39,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:14:39,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67666949] [2022-11-20 11:14:39,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67666949] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:14:39,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:14:39,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:14:39,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229003766] [2022-11-20 11:14:39,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:14:39,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:14:39,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:14:39,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:14:39,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:14:39,268 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 297 [2022-11-20 11:14:39,270 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 269 transitions, 757 flow. Second operand has 8 states, 8 states have (on average 249.25) internal successors, (1994), 8 states have internal predecessors, (1994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:39,270 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:14:39,270 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 297 [2022-11-20 11:14:39,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:14:40,230 INFO L130 PetriNetUnfolder]: 480/2225 cut-off events. [2022-11-20 11:14:40,230 INFO L131 PetriNetUnfolder]: For 361/361 co-relation queries the response was YES. [2022-11-20 11:14:40,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3887 conditions, 2225 events. 480/2225 cut-off events. For 361/361 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 18595 event pairs, 32 based on Foata normal form. 0/1939 useless extension candidates. Maximal degree in co-relation 3812. Up to 353 conditions per place. [2022-11-20 11:14:40,272 INFO L137 encePairwiseOnDemand]: 287/297 looper letters, 52 selfloop transitions, 11 changer transitions 0/292 dead transitions. [2022-11-20 11:14:40,273 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 292 transitions, 942 flow [2022-11-20 11:14:40,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:14:40,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 11:14:40,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2037 transitions. [2022-11-20 11:14:40,279 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8573232323232324 [2022-11-20 11:14:40,279 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2037 transitions. [2022-11-20 11:14:40,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2037 transitions. [2022-11-20 11:14:40,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:14:40,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2037 transitions. [2022-11-20 11:14:40,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 254.625) internal successors, (2037), 8 states have internal predecessors, (2037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:40,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 297.0) internal successors, (2673), 9 states have internal predecessors, (2673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:40,292 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 297.0) internal successors, (2673), 9 states have internal predecessors, (2673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:40,293 INFO L175 Difference]: Start difference. First operand has 300 places, 269 transitions, 757 flow. Second operand 8 states and 2037 transitions. [2022-11-20 11:14:40,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 292 transitions, 942 flow [2022-11-20 11:14:40,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 292 transitions, 937 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 11:14:40,302 INFO L231 Difference]: Finished difference. Result has 307 places, 270 transitions, 788 flow [2022-11-20 11:14:40,303 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=752, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=788, PETRI_PLACES=307, PETRI_TRANSITIONS=270} [2022-11-20 11:14:40,304 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 53 predicate places. [2022-11-20 11:14:40,304 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 270 transitions, 788 flow [2022-11-20 11:14:40,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 249.25) internal successors, (1994), 8 states have internal predecessors, (1994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:40,305 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:14:40,305 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] [2022-11-20 11:14:40,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 11:14:40,306 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 11:14:40,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:40,306 INFO L85 PathProgramCache]: Analyzing trace with hash 880923793, now seen corresponding path program 1 times [2022-11-20 11:14:40,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:40,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156143747] [2022-11-20 11:14:40,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:40,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:40,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:40,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:14:40,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:14:40,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156143747] [2022-11-20 11:14:40,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156143747] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:14:40,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:14:40,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:14:40,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087892608] [2022-11-20 11:14:40,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:14:40,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:14:40,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:14:40,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:14:40,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:14:40,407 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 297 [2022-11-20 11:14:40,408 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 270 transitions, 788 flow. Second operand has 6 states, 6 states have (on average 254.66666666666666) internal successors, (1528), 6 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:40,409 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:14:40,409 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 297 [2022-11-20 11:14:40,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:14:41,697 INFO L130 PetriNetUnfolder]: 897/4288 cut-off events. [2022-11-20 11:14:41,697 INFO L131 PetriNetUnfolder]: For 806/816 co-relation queries the response was YES. [2022-11-20 11:14:41,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6406 conditions, 4288 events. 897/4288 cut-off events. For 806/816 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 41627 event pairs, 87 based on Foata normal form. 0/3460 useless extension candidates. Maximal degree in co-relation 6146. Up to 1185 conditions per place. [2022-11-20 11:14:41,755 INFO L137 encePairwiseOnDemand]: 291/297 looper letters, 37 selfloop transitions, 5 changer transitions 0/279 dead transitions. [2022-11-20 11:14:41,755 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 279 transitions, 898 flow [2022-11-20 11:14:41,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:14:41,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:14:41,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1555 transitions. [2022-11-20 11:14:41,760 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8726150392817059 [2022-11-20 11:14:41,760 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1555 transitions. [2022-11-20 11:14:41,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1555 transitions. [2022-11-20 11:14:41,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:14:41,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1555 transitions. [2022-11-20 11:14:41,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 259.1666666666667) internal successors, (1555), 6 states have internal predecessors, (1555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:41,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:41,771 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:41,771 INFO L175 Difference]: Start difference. First operand has 307 places, 270 transitions, 788 flow. Second operand 6 states and 1555 transitions. [2022-11-20 11:14:41,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 279 transitions, 898 flow [2022-11-20 11:14:41,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 279 transitions, 885 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 11:14:41,782 INFO L231 Difference]: Finished difference. Result has 307 places, 269 transitions, 787 flow [2022-11-20 11:14:41,782 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=777, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=787, PETRI_PLACES=307, PETRI_TRANSITIONS=269} [2022-11-20 11:14:41,783 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 53 predicate places. [2022-11-20 11:14:41,783 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 269 transitions, 787 flow [2022-11-20 11:14:41,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 254.66666666666666) internal successors, (1528), 6 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:41,784 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:14:41,784 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] [2022-11-20 11:14:41,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 11:14:41,785 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 11:14:41,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:41,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1504467114, now seen corresponding path program 1 times [2022-11-20 11:14:41,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:41,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021085218] [2022-11-20 11:14:41,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:41,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:41,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:41,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:14:41,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:14:41,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021085218] [2022-11-20 11:14:41,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021085218] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:14:41,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:14:41,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:14:41,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569938300] [2022-11-20 11:14:41,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:14:41,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:14:41,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:14:41,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:14:41,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:14:41,967 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 297 [2022-11-20 11:14:41,970 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 269 transitions, 787 flow. Second operand has 8 states, 8 states have (on average 249.375) internal successors, (1995), 8 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:41,970 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:14:41,970 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 297 [2022-11-20 11:14:41,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:14:42,719 INFO L130 PetriNetUnfolder]: 428/2161 cut-off events. [2022-11-20 11:14:42,719 INFO L131 PetriNetUnfolder]: For 425/425 co-relation queries the response was YES. [2022-11-20 11:14:42,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3843 conditions, 2161 events. 428/2161 cut-off events. For 425/425 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 17830 event pairs, 32 based on Foata normal form. 0/1914 useless extension candidates. Maximal degree in co-relation 3768. Up to 329 conditions per place. [2022-11-20 11:14:42,776 INFO L137 encePairwiseOnDemand]: 287/297 looper letters, 54 selfloop transitions, 9 changer transitions 0/293 dead transitions. [2022-11-20 11:14:42,776 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 293 transitions, 976 flow [2022-11-20 11:14:42,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:14:42,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 11:14:42,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2039 transitions. [2022-11-20 11:14:42,779 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8581649831649831 [2022-11-20 11:14:42,780 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2039 transitions. [2022-11-20 11:14:42,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2039 transitions. [2022-11-20 11:14:42,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:14:42,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2039 transitions. [2022-11-20 11:14:42,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 254.875) internal successors, (2039), 8 states have internal predecessors, (2039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:42,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 297.0) internal successors, (2673), 9 states have internal predecessors, (2673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:42,790 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 297.0) internal successors, (2673), 9 states have internal predecessors, (2673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:42,790 INFO L175 Difference]: Start difference. First operand has 307 places, 269 transitions, 787 flow. Second operand 8 states and 2039 transitions. [2022-11-20 11:14:42,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 293 transitions, 976 flow [2022-11-20 11:14:42,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 293 transitions, 967 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 11:14:42,800 INFO L231 Difference]: Finished difference. Result has 312 places, 270 transitions, 808 flow [2022-11-20 11:14:42,800 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=778, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=808, PETRI_PLACES=312, PETRI_TRANSITIONS=270} [2022-11-20 11:14:42,801 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 58 predicate places. [2022-11-20 11:14:42,801 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 270 transitions, 808 flow [2022-11-20 11:14:42,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 249.375) internal successors, (1995), 8 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:42,802 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:14:42,802 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] [2022-11-20 11:14:42,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 11:14:42,803 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 11:14:42,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:42,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1334564788, now seen corresponding path program 1 times [2022-11-20 11:14:42,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:42,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892962980] [2022-11-20 11:14:42,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:42,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:42,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:42,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:14:42,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:14:42,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892962980] [2022-11-20 11:14:42,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892962980] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:14:42,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:14:42,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:14:42,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71411592] [2022-11-20 11:14:42,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:14:42,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:14:42,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:14:42,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:14:42,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:14:42,872 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 297 [2022-11-20 11:14:42,873 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 270 transitions, 808 flow. Second operand has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:42,873 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:14:42,873 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 297 [2022-11-20 11:14:42,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:14:43,361 INFO L130 PetriNetUnfolder]: 440/2239 cut-off events. [2022-11-20 11:14:43,361 INFO L131 PetriNetUnfolder]: For 518/824 co-relation queries the response was YES. [2022-11-20 11:14:43,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3453 conditions, 2239 events. 440/2239 cut-off events. For 518/824 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 23020 event pairs, 216 based on Foata normal form. 13/1784 useless extension candidates. Maximal degree in co-relation 3361. Up to 466 conditions per place. [2022-11-20 11:14:43,387 INFO L137 encePairwiseOnDemand]: 293/297 looper letters, 32 selfloop transitions, 3 changer transitions 0/280 dead transitions. [2022-11-20 11:14:43,388 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 280 transitions, 900 flow [2022-11-20 11:14:43,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:14:43,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 11:14:43,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1072 transitions. [2022-11-20 11:14:43,391 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9023569023569024 [2022-11-20 11:14:43,391 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1072 transitions. [2022-11-20 11:14:43,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1072 transitions. [2022-11-20 11:14:43,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:14:43,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1072 transitions. [2022-11-20 11:14:43,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 268.0) internal successors, (1072), 4 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:43,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:43,396 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:43,396 INFO L175 Difference]: Start difference. First operand has 312 places, 270 transitions, 808 flow. Second operand 4 states and 1072 transitions. [2022-11-20 11:14:43,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 280 transitions, 900 flow [2022-11-20 11:14:43,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 280 transitions, 889 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 11:14:43,403 INFO L231 Difference]: Finished difference. Result has 310 places, 270 transitions, 806 flow [2022-11-20 11:14:43,404 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=793, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=806, PETRI_PLACES=310, PETRI_TRANSITIONS=270} [2022-11-20 11:14:43,404 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 56 predicate places. [2022-11-20 11:14:43,405 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 270 transitions, 806 flow [2022-11-20 11:14:43,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:43,405 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:14:43,405 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] [2022-11-20 11:14:43,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-20 11:14:43,406 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 11:14:43,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:43,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1384056634, now seen corresponding path program 1 times [2022-11-20 11:14:43,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:43,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552617118] [2022-11-20 11:14:43,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:43,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:43,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:43,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:14:43,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:14:43,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552617118] [2022-11-20 11:14:43,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552617118] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:14:43,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:14:43,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:14:43,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112389394] [2022-11-20 11:14:43,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:14:43,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:14:43,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:14:43,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:14:43,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:14:43,522 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 297 [2022-11-20 11:14:43,524 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 270 transitions, 806 flow. Second operand has 6 states, 6 states have (on average 252.5) internal successors, (1515), 6 states have internal predecessors, (1515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:43,524 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:14:43,524 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 297 [2022-11-20 11:14:43,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:14:44,118 INFO L130 PetriNetUnfolder]: 214/1156 cut-off events. [2022-11-20 11:14:44,119 INFO L131 PetriNetUnfolder]: For 369/676 co-relation queries the response was YES. [2022-11-20 11:14:44,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2103 conditions, 1156 events. 214/1156 cut-off events. For 369/676 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 9776 event pairs, 116 based on Foata normal form. 5/1010 useless extension candidates. Maximal degree in co-relation 1915. Up to 271 conditions per place. [2022-11-20 11:14:44,181 INFO L137 encePairwiseOnDemand]: 289/297 looper letters, 48 selfloop transitions, 7 changer transitions 0/285 dead transitions. [2022-11-20 11:14:44,181 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 285 transitions, 960 flow [2022-11-20 11:14:44,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:14:44,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:14:44,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1795 transitions. [2022-11-20 11:14:44,184 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8633958633958634 [2022-11-20 11:14:44,185 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1795 transitions. [2022-11-20 11:14:44,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1795 transitions. [2022-11-20 11:14:44,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:14:44,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1795 transitions. [2022-11-20 11:14:44,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 256.42857142857144) internal successors, (1795), 7 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:44,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 297.0) internal successors, (2376), 8 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:44,193 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 297.0) internal successors, (2376), 8 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:44,193 INFO L175 Difference]: Start difference. First operand has 310 places, 270 transitions, 806 flow. Second operand 7 states and 1795 transitions. [2022-11-20 11:14:44,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 285 transitions, 960 flow [2022-11-20 11:14:44,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 285 transitions, 955 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 11:14:44,201 INFO L231 Difference]: Finished difference. Result has 317 places, 273 transitions, 837 flow [2022-11-20 11:14:44,202 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=837, PETRI_PLACES=317, PETRI_TRANSITIONS=273} [2022-11-20 11:14:44,202 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 63 predicate places. [2022-11-20 11:14:44,202 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 273 transitions, 837 flow [2022-11-20 11:14:44,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 252.5) internal successors, (1515), 6 states have internal predecessors, (1515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:44,203 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:14:44,203 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] [2022-11-20 11:14:44,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-20 11:14:44,204 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 11:14:44,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:44,204 INFO L85 PathProgramCache]: Analyzing trace with hash 683113754, now seen corresponding path program 1 times [2022-11-20 11:14:44,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:44,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92614683] [2022-11-20 11:14:44,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:44,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:44,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:44,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:14:44,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:14:44,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92614683] [2022-11-20 11:14:44,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92614683] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:14:44,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:14:44,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:14:44,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457786625] [2022-11-20 11:14:44,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:14:44,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:14:44,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:14:44,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:14:44,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:14:44,326 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 297 [2022-11-20 11:14:44,328 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 273 transitions, 837 flow. Second operand has 6 states, 6 states have (on average 252.66666666666666) internal successors, (1516), 6 states have internal predecessors, (1516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:44,328 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:14:44,328 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 297 [2022-11-20 11:14:44,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:14:44,913 INFO L130 PetriNetUnfolder]: 202/1139 cut-off events. [2022-11-20 11:14:44,913 INFO L131 PetriNetUnfolder]: For 386/676 co-relation queries the response was YES. [2022-11-20 11:14:44,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2181 conditions, 1139 events. 202/1139 cut-off events. For 386/676 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 9351 event pairs, 92 based on Foata normal form. 5/1024 useless extension candidates. Maximal degree in co-relation 1993. Up to 222 conditions per place. [2022-11-20 11:14:44,947 INFO L137 encePairwiseOnDemand]: 289/297 looper letters, 54 selfloop transitions, 8 changer transitions 0/294 dead transitions. [2022-11-20 11:14:44,948 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 294 transitions, 1034 flow [2022-11-20 11:14:44,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:14:44,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:14:44,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1801 transitions. [2022-11-20 11:14:44,951 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8662818662818663 [2022-11-20 11:14:44,951 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1801 transitions. [2022-11-20 11:14:44,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1801 transitions. [2022-11-20 11:14:44,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:14:44,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1801 transitions. [2022-11-20 11:14:44,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 257.2857142857143) internal successors, (1801), 7 states have internal predecessors, (1801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:44,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 297.0) internal successors, (2376), 8 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:44,960 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 297.0) internal successors, (2376), 8 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:44,961 INFO L175 Difference]: Start difference. First operand has 317 places, 273 transitions, 837 flow. Second operand 7 states and 1801 transitions. [2022-11-20 11:14:44,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 294 transitions, 1034 flow [2022-11-20 11:14:44,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 294 transitions, 1032 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:14:44,970 INFO L231 Difference]: Finished difference. Result has 325 places, 277 transitions, 884 flow [2022-11-20 11:14:44,971 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=831, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=884, PETRI_PLACES=325, PETRI_TRANSITIONS=277} [2022-11-20 11:14:44,971 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 71 predicate places. [2022-11-20 11:14:44,971 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 277 transitions, 884 flow [2022-11-20 11:14:44,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 252.66666666666666) internal successors, (1516), 6 states have internal predecessors, (1516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:44,972 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:14:44,973 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] [2022-11-20 11:14:44,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-20 11:14:44,973 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 11:14:44,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:44,974 INFO L85 PathProgramCache]: Analyzing trace with hash 314361238, now seen corresponding path program 1 times [2022-11-20 11:14:44,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:44,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10837642] [2022-11-20 11:14:44,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:44,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:44,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:45,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:14:45,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:14:45,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10837642] [2022-11-20 11:14:45,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10837642] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:14:45,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:14:45,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:14:45,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263587373] [2022-11-20 11:14:45,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:14:45,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:14:45,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:14:45,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:14:45,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:14:45,116 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 297 [2022-11-20 11:14:45,118 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 277 transitions, 884 flow. Second operand has 8 states, 8 states have (on average 249.375) internal successors, (1995), 8 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:45,118 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:14:45,118 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 297 [2022-11-20 11:14:45,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:14:46,469 INFO L130 PetriNetUnfolder]: 620/3210 cut-off events. [2022-11-20 11:14:46,469 INFO L131 PetriNetUnfolder]: For 688/1006 co-relation queries the response was YES. [2022-11-20 11:14:46,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5117 conditions, 3210 events. 620/3210 cut-off events. For 688/1006 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 31906 event pairs, 36 based on Foata normal form. 0/2660 useless extension candidates. Maximal degree in co-relation 4588. Up to 558 conditions per place. [2022-11-20 11:14:46,513 INFO L137 encePairwiseOnDemand]: 287/297 looper letters, 50 selfloop transitions, 9 changer transitions 0/299 dead transitions. [2022-11-20 11:14:46,513 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 299 transitions, 1054 flow [2022-11-20 11:14:46,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:14:46,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 11:14:46,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2036 transitions. [2022-11-20 11:14:46,516 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8569023569023569 [2022-11-20 11:14:46,517 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2036 transitions. [2022-11-20 11:14:46,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2036 transitions. [2022-11-20 11:14:46,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:14:46,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2036 transitions. [2022-11-20 11:14:46,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 254.5) internal successors, (2036), 8 states have internal predecessors, (2036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:46,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 297.0) internal successors, (2673), 9 states have internal predecessors, (2673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:46,525 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 297.0) internal successors, (2673), 9 states have internal predecessors, (2673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:46,526 INFO L175 Difference]: Start difference. First operand has 325 places, 277 transitions, 884 flow. Second operand 8 states and 2036 transitions. [2022-11-20 11:14:46,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 299 transitions, 1054 flow [2022-11-20 11:14:46,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 299 transitions, 1054 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:14:46,535 INFO L231 Difference]: Finished difference. Result has 334 places, 278 transitions, 914 flow [2022-11-20 11:14:46,536 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=884, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=914, PETRI_PLACES=334, PETRI_TRANSITIONS=278} [2022-11-20 11:14:46,536 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 80 predicate places. [2022-11-20 11:14:46,536 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 278 transitions, 914 flow [2022-11-20 11:14:46,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 249.375) internal successors, (1995), 8 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:46,537 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:14:46,537 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] [2022-11-20 11:14:46,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-20 11:14:46,538 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 11:14:46,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:46,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1155264696, now seen corresponding path program 1 times [2022-11-20 11:14:46,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:46,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307345703] [2022-11-20 11:14:46,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:46,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:46,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:46,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:14:46,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:14:46,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307345703] [2022-11-20 11:14:46,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307345703] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:14:46,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:14:46,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:14:46,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804904435] [2022-11-20 11:14:46,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:14:46,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:14:46,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:14:46,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:14:46,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:14:46,682 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 297 [2022-11-20 11:14:46,684 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 278 transitions, 914 flow. Second operand has 8 states, 8 states have (on average 249.5) internal successors, (1996), 8 states have internal predecessors, (1996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:46,685 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:14:46,685 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 297 [2022-11-20 11:14:46,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:14:47,727 INFO L130 PetriNetUnfolder]: 530/3100 cut-off events. [2022-11-20 11:14:47,728 INFO L131 PetriNetUnfolder]: For 762/1346 co-relation queries the response was YES. [2022-11-20 11:14:47,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5051 conditions, 3100 events. 530/3100 cut-off events. For 762/1346 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 30377 event pairs, 48 based on Foata normal form. 0/2649 useless extension candidates. Maximal degree in co-relation 4516. Up to 496 conditions per place. [2022-11-20 11:14:47,792 INFO L137 encePairwiseOnDemand]: 287/297 looper letters, 53 selfloop transitions, 9 changer transitions 0/302 dead transitions. [2022-11-20 11:14:47,792 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 302 transitions, 1101 flow [2022-11-20 11:14:47,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:14:47,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 11:14:47,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2038 transitions. [2022-11-20 11:14:47,884 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8577441077441077 [2022-11-20 11:14:47,884 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2038 transitions. [2022-11-20 11:14:47,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2038 transitions. [2022-11-20 11:14:47,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:14:47,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2038 transitions. [2022-11-20 11:14:47,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 254.75) internal successors, (2038), 8 states have internal predecessors, (2038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:47,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 297.0) internal successors, (2673), 9 states have internal predecessors, (2673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:47,894 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 297.0) internal successors, (2673), 9 states have internal predecessors, (2673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:47,894 INFO L175 Difference]: Start difference. First operand has 334 places, 278 transitions, 914 flow. Second operand 8 states and 2038 transitions. [2022-11-20 11:14:47,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 302 transitions, 1101 flow [2022-11-20 11:14:47,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 302 transitions, 1092 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 11:14:47,907 INFO L231 Difference]: Finished difference. Result has 339 places, 279 transitions, 935 flow [2022-11-20 11:14:47,907 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=905, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=935, PETRI_PLACES=339, PETRI_TRANSITIONS=279} [2022-11-20 11:14:47,908 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 85 predicate places. [2022-11-20 11:14:47,908 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 279 transitions, 935 flow [2022-11-20 11:14:47,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 249.5) internal successors, (1996), 8 states have internal predecessors, (1996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:47,909 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:14:47,909 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:14:47,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-20 11:14:47,910 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 11:14:47,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:47,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1880787068, now seen corresponding path program 1 times [2022-11-20 11:14:47,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:47,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915995488] [2022-11-20 11:14:47,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:47,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:47,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:48,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:14:48,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:14:48,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915995488] [2022-11-20 11:14:48,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915995488] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:14:48,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:14:48,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:14:48,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609432768] [2022-11-20 11:14:48,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:14:48,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:14:48,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:14:48,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:14:48,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:14:48,078 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 297 [2022-11-20 11:14:48,080 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 279 transitions, 935 flow. Second operand has 6 states, 6 states have (on average 252.66666666666666) internal successors, (1516), 6 states have internal predecessors, (1516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:48,081 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:14:48,081 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 297 [2022-11-20 11:14:48,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:14:49,103 INFO L130 PetriNetUnfolder]: 656/2384 cut-off events. [2022-11-20 11:14:49,104 INFO L131 PetriNetUnfolder]: For 1028/1325 co-relation queries the response was YES. [2022-11-20 11:14:49,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4495 conditions, 2384 events. 656/2384 cut-off events. For 1028/1325 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 26532 event pairs, 348 based on Foata normal form. 17/1905 useless extension candidates. Maximal degree in co-relation 4392. Up to 741 conditions per place. [2022-11-20 11:14:49,147 INFO L137 encePairwiseOnDemand]: 289/297 looper letters, 40 selfloop transitions, 7 changer transitions 4/293 dead transitions. [2022-11-20 11:14:49,147 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 293 transitions, 1073 flow [2022-11-20 11:14:49,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:14:49,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:14:49,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1794 transitions. [2022-11-20 11:14:49,150 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.862914862914863 [2022-11-20 11:14:49,151 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1794 transitions. [2022-11-20 11:14:49,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1794 transitions. [2022-11-20 11:14:49,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:14:49,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1794 transitions. [2022-11-20 11:14:49,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 256.2857142857143) internal successors, (1794), 7 states have internal predecessors, (1794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:49,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 297.0) internal successors, (2376), 8 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:49,159 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 297.0) internal successors, (2376), 8 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:49,159 INFO L175 Difference]: Start difference. First operand has 339 places, 279 transitions, 935 flow. Second operand 7 states and 1794 transitions. [2022-11-20 11:14:49,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 293 transitions, 1073 flow [2022-11-20 11:14:49,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 293 transitions, 1062 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 11:14:49,173 INFO L231 Difference]: Finished difference. Result has 343 places, 282 transitions, 960 flow [2022-11-20 11:14:49,173 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=920, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=960, PETRI_PLACES=343, PETRI_TRANSITIONS=282} [2022-11-20 11:14:49,174 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 89 predicate places. [2022-11-20 11:14:49,174 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 282 transitions, 960 flow [2022-11-20 11:14:49,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 252.66666666666666) internal successors, (1516), 6 states have internal predecessors, (1516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:49,175 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:14:49,175 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:14:49,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-20 11:14:49,176 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 11:14:49,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:49,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1098111909, now seen corresponding path program 1 times [2022-11-20 11:14:49,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:49,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573026420] [2022-11-20 11:14:49,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:49,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:49,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:49,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:14:49,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:14:49,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573026420] [2022-11-20 11:14:49,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573026420] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:14:49,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:14:49,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:14:49,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214340115] [2022-11-20 11:14:49,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:14:49,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:14:49,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:14:49,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:14:49,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:14:49,324 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 297 [2022-11-20 11:14:49,325 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 282 transitions, 960 flow. Second operand has 6 states, 6 states have (on average 252.83333333333334) internal successors, (1517), 6 states have internal predecessors, (1517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:49,326 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:14:49,326 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 297 [2022-11-20 11:14:49,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:14:50,240 INFO L130 PetriNetUnfolder]: 608/2323 cut-off events. [2022-11-20 11:14:50,241 INFO L131 PetriNetUnfolder]: For 1080/1360 co-relation queries the response was YES. [2022-11-20 11:14:50,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4696 conditions, 2323 events. 608/2323 cut-off events. For 1080/1360 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 25516 event pairs, 288 based on Foata normal form. 13/1941 useless extension candidates. Maximal degree in co-relation 4594. Up to 616 conditions per place. [2022-11-20 11:14:50,265 INFO L137 encePairwiseOnDemand]: 289/297 looper letters, 0 selfloop transitions, 0 changer transitions 303/303 dead transitions. [2022-11-20 11:14:50,265 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 303 transitions, 1154 flow [2022-11-20 11:14:50,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:14:50,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:14:50,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1800 transitions. [2022-11-20 11:14:50,269 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8658008658008658 [2022-11-20 11:14:50,269 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1800 transitions. [2022-11-20 11:14:50,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1800 transitions. [2022-11-20 11:14:50,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:14:50,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1800 transitions. [2022-11-20 11:14:50,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 257.14285714285717) internal successors, (1800), 7 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:50,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 297.0) internal successors, (2376), 8 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:50,281 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 297.0) internal successors, (2376), 8 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:50,281 INFO L175 Difference]: Start difference. First operand has 343 places, 282 transitions, 960 flow. Second operand 7 states and 1800 transitions. [2022-11-20 11:14:50,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 303 transitions, 1154 flow [2022-11-20 11:14:50,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 303 transitions, 1152 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:14:50,299 INFO L231 Difference]: Finished difference. Result has 347 places, 0 transitions, 0 flow [2022-11-20 11:14:50,299 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=954, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=347, PETRI_TRANSITIONS=0} [2022-11-20 11:14:50,300 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 93 predicate places. [2022-11-20 11:14:50,300 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 0 transitions, 0 flow [2022-11-20 11:14:50,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 252.83333333333334) internal successors, (1517), 6 states have internal predecessors, (1517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:50,304 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 39 remaining) [2022-11-20 11:14:50,305 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 39 remaining) [2022-11-20 11:14:50,305 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 39 remaining) [2022-11-20 11:14:50,311 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 39 remaining) [2022-11-20 11:14:50,311 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 39 remaining) [2022-11-20 11:14:50,311 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 39 remaining) [2022-11-20 11:14:50,312 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 39 remaining) [2022-11-20 11:14:50,312 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 39 remaining) [2022-11-20 11:14:50,312 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 39 remaining) [2022-11-20 11:14:50,312 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 39 remaining) [2022-11-20 11:14:50,315 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 39 remaining) [2022-11-20 11:14:50,316 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 39 remaining) [2022-11-20 11:14:50,316 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 39 remaining) [2022-11-20 11:14:50,316 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 39 remaining) [2022-11-20 11:14:50,316 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 39 remaining) [2022-11-20 11:14:50,317 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 39 remaining) [2022-11-20 11:14:50,317 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 39 remaining) [2022-11-20 11:14:50,317 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 39 remaining) [2022-11-20 11:14:50,317 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 39 remaining) [2022-11-20 11:14:50,317 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 39 remaining) [2022-11-20 11:14:50,318 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 39 remaining) [2022-11-20 11:14:50,318 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 39 remaining) [2022-11-20 11:14:50,318 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 39 remaining) [2022-11-20 11:14:50,318 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 39 remaining) [2022-11-20 11:14:50,318 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 39 remaining) [2022-11-20 11:14:50,319 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 39 remaining) [2022-11-20 11:14:50,319 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 39 remaining) [2022-11-20 11:14:50,319 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 39 remaining) [2022-11-20 11:14:50,320 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 39 remaining) [2022-11-20 11:14:50,320 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 39 remaining) [2022-11-20 11:14:50,320 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 39 remaining) [2022-11-20 11:14:50,320 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 39 remaining) [2022-11-20 11:14:50,320 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 39 remaining) [2022-11-20 11:14:50,321 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 39 remaining) [2022-11-20 11:14:50,321 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 39 remaining) [2022-11-20 11:14:50,321 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 39 remaining) [2022-11-20 11:14:50,321 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 39 remaining) [2022-11-20 11:14:50,321 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 39 remaining) [2022-11-20 11:14:50,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 39 remaining) [2022-11-20 11:14:50,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-20 11:14:50,322 INFO L444 BasicCegarLoop]: Path program 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] [2022-11-20 11:14:50,329 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-20 11:14:50,329 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 11:14:50,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:14:50 BasicIcfg [2022-11-20 11:14:50,337 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 11:14:50,338 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 11:14:50,338 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 11:14:50,338 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 11:14:50,339 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:14:23" (3/4) ... [2022-11-20 11:14:50,342 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 11:14:50,350 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-20 11:14:50,351 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-20 11:14:50,351 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-20 11:14:50,358 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-11-20 11:14:50,358 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-20 11:14:50,358 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 11:14:50,359 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 11:14:50,420 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92062e1b-78ae-4e14-b75a-a2cbfba1e0d2/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 11:14:50,421 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 11:14:50,421 INFO L158 Benchmark]: Toolchain (without parser) took 28047.30ms. Allocated memory was 180.4MB in the beginning and 1.1GB in the end (delta: 870.3MB). Free memory was 141.6MB in the beginning and 918.7MB in the end (delta: -777.0MB). Peak memory consumption was 95.4MB. Max. memory is 16.1GB. [2022-11-20 11:14:50,422 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 121.6MB. Free memory was 65.9MB in the beginning and 65.7MB in the end (delta: 167.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:14:50,422 INFO L158 Benchmark]: CACSL2BoogieTranslator took 295.74ms. Allocated memory is still 180.4MB. Free memory was 141.6MB in the beginning and 130.0MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 11:14:50,423 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.93ms. Allocated memory is still 180.4MB. Free memory was 130.0MB in the beginning and 127.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:14:50,423 INFO L158 Benchmark]: Boogie Preprocessor took 34.06ms. Allocated memory is still 180.4MB. Free memory was 127.4MB in the beginning and 125.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:14:50,423 INFO L158 Benchmark]: RCFGBuilder took 927.60ms. Allocated memory is still 180.4MB. Free memory was 125.8MB in the beginning and 102.8MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-20 11:14:50,424 INFO L158 Benchmark]: TraceAbstraction took 26639.07ms. Allocated memory was 180.4MB in the beginning and 1.1GB in the end (delta: 870.3MB). Free memory was 102.2MB in the beginning and 921.8MB in the end (delta: -819.6MB). Peak memory consumption was 616.4MB. Max. memory is 16.1GB. [2022-11-20 11:14:50,424 INFO L158 Benchmark]: Witness Printer took 82.99ms. Allocated memory is still 1.1GB. Free memory was 921.8MB in the beginning and 918.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:14:50,432 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 121.6MB. Free memory was 65.9MB in the beginning and 65.7MB in the end (delta: 167.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 295.74ms. Allocated memory is still 180.4MB. Free memory was 141.6MB in the beginning and 130.0MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.93ms. Allocated memory is still 180.4MB. Free memory was 130.0MB in the beginning and 127.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.06ms. Allocated memory is still 180.4MB. Free memory was 127.4MB in the beginning and 125.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 927.60ms. Allocated memory is still 180.4MB. Free memory was 125.8MB in the beginning and 102.8MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 26639.07ms. Allocated memory was 180.4MB in the beginning and 1.1GB in the end (delta: 870.3MB). Free memory was 102.2MB in the beginning and 921.8MB in the end (delta: -819.6MB). Peak memory consumption was 616.4MB. Max. memory is 16.1GB. * Witness Printer took 82.99ms. Allocated memory is still 1.1GB. Free memory was 921.8MB in the beginning and 918.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 461 locations, 39 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 26.3s, OverallIterations: 27, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 21.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1571 SdHoareTripleChecker+Valid, 2.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1571 mSDsluCounter, 805 SdHoareTripleChecker+Invalid, 2.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 428 mSDsCounter, 63 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2976 IncrementalHoareTripleChecker+Invalid, 3039 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 63 mSolverCounterUnsat, 377 mSDtfsCounter, 2976 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 195 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=960occurred in iteration=26, InterpolantAutomatonStates: 166, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 1959 NumberOfCodeBlocks, 1959 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 1932 ConstructedInterpolants, 0 QuantifiedInterpolants, 4247 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 27 InterpolantComputations, 27 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 18 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-20 11:14:50,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92062e1b-78ae-4e14-b75a-a2cbfba1e0d2/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE