./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-match-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_ce9f750a-8882-4ab6-8c3a-444fc06ca611/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9f750a-8882-4ab6-8c3a-444fc06ca611/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_ce9f750a-8882-4ab6-8c3a-444fc06ca611/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9f750a-8882-4ab6-8c3a-444fc06ca611/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-match-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9f750a-8882-4ab6-8c3a-444fc06ca611/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_ce9f750a-8882-4ab6-8c3a-444fc06ca611/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 3c2ccb27a3ce50ce458a10a4aa8fbbd4d9c9d88060b8c7df98385ed8946afbfa --- 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 12:19:03,369 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:19:03,371 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:19:03,402 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:19:03,410 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:19:03,411 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:19:03,413 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:19:03,414 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:19:03,416 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:19:03,417 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:19:03,418 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:19:03,419 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:19:03,420 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:19:03,421 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:19:03,422 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:19:03,428 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:19:03,429 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:19:03,439 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:19:03,442 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:19:03,449 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:19:03,452 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:19:03,455 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:19:03,458 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:19:03,459 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:19:03,468 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:19:03,468 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:19:03,469 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:19:03,470 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:19:03,470 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:19:03,471 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:19:03,471 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:19:03,472 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:19:03,473 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:19:03,474 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:19:03,475 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:19:03,475 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:19:03,476 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:19:03,476 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:19:03,477 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:19:03,478 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:19:03,482 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:19:03,484 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9f750a-8882-4ab6-8c3a-444fc06ca611/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 12:19:03,525 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:19:03,525 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:19:03,526 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:19:03,526 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:19:03,531 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:19:03,531 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:19:03,532 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:19:03,532 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:19:03,532 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:19:03,533 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:19:03,534 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:19:03,534 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:19:03,534 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:19:03,534 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:19:03,534 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:19:03,535 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:19:03,535 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:19:03,535 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:19:03,535 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 12:19:03,535 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:19:03,536 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:19:03,536 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:19:03,536 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:19:03,537 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:19:03,537 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:19:03,537 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:19:03,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:19:03,538 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:19:03,538 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:19:03,539 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:19:03,539 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:19:03,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:19:03,539 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:19:03,540 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:19:03,540 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:19:03,540 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_ce9f750a-8882-4ab6-8c3a-444fc06ca611/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9f750a-8882-4ab6-8c3a-444fc06ca611/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c2ccb27a3ce50ce458a10a4aa8fbbd4d9c9d88060b8c7df98385ed8946afbfa [2022-11-20 12:19:03,846 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:19:03,884 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:19:03,887 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:19:03,889 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:19:03,889 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:19:03,891 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9f750a-8882-4ab6-8c3a-444fc06ca611/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/chl-match-subst.wvr.c [2022-11-20 12:19:06,970 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:19:07,169 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:19:07,170 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9f750a-8882-4ab6-8c3a-444fc06ca611/sv-benchmarks/c/weaver/chl-match-subst.wvr.c [2022-11-20 12:19:07,177 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9f750a-8882-4ab6-8c3a-444fc06ca611/bin/uautomizer-ug76WZFUDN/data/71cdadc41/663968d9f9cc452a9f00b44347925fd0/FLAG7e45a1045 [2022-11-20 12:19:07,192 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9f750a-8882-4ab6-8c3a-444fc06ca611/bin/uautomizer-ug76WZFUDN/data/71cdadc41/663968d9f9cc452a9f00b44347925fd0 [2022-11-20 12:19:07,195 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:19:07,196 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:19:07,198 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:19:07,198 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:19:07,204 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:19:07,207 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:19:07" (1/1) ... [2022-11-20 12:19:07,208 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64ebac10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:07, skipping insertion in model container [2022-11-20 12:19:07,209 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:19:07" (1/1) ... [2022-11-20 12:19:07,218 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:19:07,243 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:19:07,470 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_ce9f750a-8882-4ab6-8c3a-444fc06ca611/sv-benchmarks/c/weaver/chl-match-subst.wvr.c[3017,3030] [2022-11-20 12:19:07,474 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:19:07,485 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:19:07,513 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_ce9f750a-8882-4ab6-8c3a-444fc06ca611/sv-benchmarks/c/weaver/chl-match-subst.wvr.c[3017,3030] [2022-11-20 12:19:07,519 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:19:07,534 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:19:07,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:07 WrapperNode [2022-11-20 12:19:07,534 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:19:07,535 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:19:07,535 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:19:07,536 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:19:07,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:07" (1/1) ... [2022-11-20 12:19:07,553 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:07" (1/1) ... [2022-11-20 12:19:07,590 INFO L138 Inliner]: procedures = 23, calls = 34, calls flagged for inlining = 12, calls inlined = 22, statements flattened = 290 [2022-11-20 12:19:07,590 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:19:07,591 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:19:07,591 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:19:07,591 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:19:07,601 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:07" (1/1) ... [2022-11-20 12:19:07,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:07" (1/1) ... [2022-11-20 12:19:07,607 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:07" (1/1) ... [2022-11-20 12:19:07,609 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:07" (1/1) ... [2022-11-20 12:19:07,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:07" (1/1) ... [2022-11-20 12:19:07,620 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:07" (1/1) ... [2022-11-20 12:19:07,622 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:07" (1/1) ... [2022-11-20 12:19:07,624 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:07" (1/1) ... [2022-11-20 12:19:07,628 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:19:07,629 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:19:07,629 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:19:07,629 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:19:07,630 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:07" (1/1) ... [2022-11-20 12:19:07,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:19:07,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9f750a-8882-4ab6-8c3a-444fc06ca611/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:19:07,664 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9f750a-8882-4ab6-8c3a-444fc06ca611/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:19:07,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9f750a-8882-4ab6-8c3a-444fc06ca611/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:19:07,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:19:07,719 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 12:19:07,719 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 12:19:07,719 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 12:19:07,719 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 12:19:07,719 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 12:19:07,719 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 12:19:07,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:19:07,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:19:07,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:19:07,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:19:07,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:19:07,720 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:19:07,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:19:07,722 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 12:19:07,912 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:19:07,914 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:19:08,631 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:19:08,646 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:19:08,646 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 12:19:08,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:19:08 BoogieIcfgContainer [2022-11-20 12:19:08,649 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:19:08,652 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:19:08,652 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:19:08,656 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:19:08,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:19:07" (1/3) ... [2022-11-20 12:19:08,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@427f973b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:19:08, skipping insertion in model container [2022-11-20 12:19:08,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:07" (2/3) ... [2022-11-20 12:19:08,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@427f973b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:19:08, skipping insertion in model container [2022-11-20 12:19:08,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:19:08" (3/3) ... [2022-11-20 12:19:08,659 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-match-subst.wvr.c [2022-11-20 12:19:08,668 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 12:19:08,680 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:19:08,684 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2022-11-20 12:19:08,685 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 12:19:08,851 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 12:19:08,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 404 places, 420 transitions, 864 flow [2022-11-20 12:19:09,162 INFO L130 PetriNetUnfolder]: 26/417 cut-off events. [2022-11-20 12:19:09,163 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 12:19:09,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 430 conditions, 417 events. 26/417 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 964 event pairs, 0 based on Foata normal form. 0/355 useless extension candidates. Maximal degree in co-relation 328. Up to 2 conditions per place. [2022-11-20 12:19:09,187 INFO L82 GeneralOperation]: Start removeDead. Operand has 404 places, 420 transitions, 864 flow [2022-11-20 12:19:09,199 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 374 places, 388 transitions, 791 flow [2022-11-20 12:19:09,209 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:19:09,216 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;@b0c72ab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:19:09,217 INFO L358 AbstractCegarLoop]: Starting to check reachability of 75 error locations. [2022-11-20 12:19:09,232 INFO L130 PetriNetUnfolder]: 0/78 cut-off events. [2022-11-20 12:19:09,232 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:19:09,233 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:19:09,233 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 12:19:09,234 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-20 12:19:09,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:09,240 INFO L85 PathProgramCache]: Analyzing trace with hash -842592282, now seen corresponding path program 1 times [2022-11-20 12:19:09,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:09,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338437538] [2022-11-20 12:19:09,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:09,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:09,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:09,734 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 12:19:09,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:19:09,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338437538] [2022-11-20 12:19:09,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338437538] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:19:09,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:19:09,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:19:09,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314845168] [2022-11-20 12:19:09,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:19:09,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:19:09,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:19:09,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:19:09,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:19:09,789 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 420 [2022-11-20 12:19:09,797 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 388 transitions, 791 flow. Second operand has 6 states, 6 states have (on average 354.8333333333333) internal successors, (2129), 6 states have internal predecessors, (2129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:09,797 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:19:09,797 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 420 [2022-11-20 12:19:09,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:19:11,117 INFO L130 PetriNetUnfolder]: 320/3300 cut-off events. [2022-11-20 12:19:11,117 INFO L131 PetriNetUnfolder]: For 145/235 co-relation queries the response was YES. [2022-11-20 12:19:11,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4012 conditions, 3300 events. 320/3300 cut-off events. For 145/235 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 28410 event pairs, 85 based on Foata normal form. 301/3004 useless extension candidates. Maximal degree in co-relation 3907. Up to 163 conditions per place. [2022-11-20 12:19:11,208 INFO L137 encePairwiseOnDemand]: 398/420 looper letters, 57 selfloop transitions, 9 changer transitions 0/391 dead transitions. [2022-11-20 12:19:11,208 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 391 transitions, 953 flow [2022-11-20 12:19:11,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:19:11,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:19:11,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2575 transitions. [2022-11-20 12:19:11,234 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8758503401360545 [2022-11-20 12:19:11,235 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2575 transitions. [2022-11-20 12:19:11,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2575 transitions. [2022-11-20 12:19:11,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:19:11,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2575 transitions. [2022-11-20 12:19:11,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 367.85714285714283) internal successors, (2575), 7 states have internal predecessors, (2575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:11,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:11,271 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:11,273 INFO L175 Difference]: Start difference. First operand has 374 places, 388 transitions, 791 flow. Second operand 7 states and 2575 transitions. [2022-11-20 12:19:11,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 391 transitions, 953 flow [2022-11-20 12:19:11,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 391 transitions, 931 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 12:19:11,294 INFO L231 Difference]: Finished difference. Result has 374 places, 375 transitions, 774 flow [2022-11-20 12:19:11,296 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=756, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=774, PETRI_PLACES=374, PETRI_TRANSITIONS=375} [2022-11-20 12:19:11,305 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 0 predicate places. [2022-11-20 12:19:11,306 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 375 transitions, 774 flow [2022-11-20 12:19:11,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 354.8333333333333) internal successors, (2129), 6 states have internal predecessors, (2129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:11,308 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:19:11,308 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 12:19:11,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:19:11,309 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-20 12:19:11,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:11,311 INFO L85 PathProgramCache]: Analyzing trace with hash -350555976, now seen corresponding path program 1 times [2022-11-20 12:19:11,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:11,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918153323] [2022-11-20 12:19:11,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:11,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:11,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:11,478 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 12:19:11,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:19:11,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918153323] [2022-11-20 12:19:11,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918153323] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:19:11,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:19:11,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:19:11,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120605617] [2022-11-20 12:19:11,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:19:11,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:19:11,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:19:11,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:19:11,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:19:11,484 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 420 [2022-11-20 12:19:11,486 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 375 transitions, 774 flow. Second operand has 4 states, 4 states have (on average 354.75) internal successors, (1419), 4 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:11,486 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:19:11,486 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 420 [2022-11-20 12:19:11,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:19:11,964 INFO L130 PetriNetUnfolder]: 146/961 cut-off events. [2022-11-20 12:19:11,964 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-11-20 12:19:11,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1515 conditions, 961 events. 146/961 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 6075 event pairs, 60 based on Foata normal form. 6/838 useless extension candidates. Maximal degree in co-relation 887. Up to 164 conditions per place. [2022-11-20 12:19:11,998 INFO L137 encePairwiseOnDemand]: 407/420 looper letters, 64 selfloop transitions, 9 changer transitions 0/398 dead transitions. [2022-11-20 12:19:11,998 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 398 transitions, 974 flow [2022-11-20 12:19:11,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:19:11,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:19:12,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1489 transitions. [2022-11-20 12:19:12,002 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8863095238095238 [2022-11-20 12:19:12,003 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1489 transitions. [2022-11-20 12:19:12,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1489 transitions. [2022-11-20 12:19:12,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:19:12,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1489 transitions. [2022-11-20 12:19:12,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 372.25) internal successors, (1489), 4 states have internal predecessors, (1489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:12,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 420.0) internal successors, (2100), 5 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:12,013 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 420.0) internal successors, (2100), 5 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:12,013 INFO L175 Difference]: Start difference. First operand has 374 places, 375 transitions, 774 flow. Second operand 4 states and 1489 transitions. [2022-11-20 12:19:12,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 398 transitions, 974 flow [2022-11-20 12:19:12,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 398 transitions, 956 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-20 12:19:12,022 INFO L231 Difference]: Finished difference. Result has 372 places, 378 transitions, 812 flow [2022-11-20 12:19:12,023 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=752, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=812, PETRI_PLACES=372, PETRI_TRANSITIONS=378} [2022-11-20 12:19:12,024 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, -2 predicate places. [2022-11-20 12:19:12,024 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 378 transitions, 812 flow [2022-11-20 12:19:12,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 354.75) internal successors, (1419), 4 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:12,026 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:19:12,026 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 12:19:12,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:19:12,026 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-20 12:19:12,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:12,027 INFO L85 PathProgramCache]: Analyzing trace with hash 720859206, now seen corresponding path program 1 times [2022-11-20 12:19:12,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:12,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245667122] [2022-11-20 12:19:12,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:12,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:12,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:12,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:19:12,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:19:12,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245667122] [2022-11-20 12:19:12,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245667122] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:19:12,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:19:12,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:19:12,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963498900] [2022-11-20 12:19:12,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:19:12,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:19:12,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:19:12,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:19:12,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:19:12,218 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 420 [2022-11-20 12:19:12,221 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 378 transitions, 812 flow. Second operand has 6 states, 6 states have (on average 355.0) internal successors, (2130), 6 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:12,222 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:19:12,222 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 420 [2022-11-20 12:19:12,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:19:13,059 INFO L130 PetriNetUnfolder]: 295/1955 cut-off events. [2022-11-20 12:19:13,059 INFO L131 PetriNetUnfolder]: For 123/123 co-relation queries the response was YES. [2022-11-20 12:19:13,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2785 conditions, 1955 events. 295/1955 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 14976 event pairs, 80 based on Foata normal form. 0/1608 useless extension candidates. Maximal degree in co-relation 1548. Up to 192 conditions per place. [2022-11-20 12:19:13,112 INFO L137 encePairwiseOnDemand]: 410/420 looper letters, 56 selfloop transitions, 9 changer transitions 0/392 dead transitions. [2022-11-20 12:19:13,113 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 392 transitions, 980 flow [2022-11-20 12:19:13,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:19:13,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:19:13,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2537 transitions. [2022-11-20 12:19:13,118 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8629251700680272 [2022-11-20 12:19:13,118 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2537 transitions. [2022-11-20 12:19:13,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2537 transitions. [2022-11-20 12:19:13,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:19:13,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2537 transitions. [2022-11-20 12:19:13,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 362.42857142857144) internal successors, (2537), 7 states have internal predecessors, (2537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:13,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:13,135 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:13,135 INFO L175 Difference]: Start difference. First operand has 372 places, 378 transitions, 812 flow. Second operand 7 states and 2537 transitions. [2022-11-20 12:19:13,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 392 transitions, 980 flow [2022-11-20 12:19:13,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 392 transitions, 980 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:19:13,144 INFO L231 Difference]: Finished difference. Result has 377 places, 377 transitions, 828 flow [2022-11-20 12:19:13,144 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=810, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=828, PETRI_PLACES=377, PETRI_TRANSITIONS=377} [2022-11-20 12:19:13,145 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 3 predicate places. [2022-11-20 12:19:13,145 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 377 transitions, 828 flow [2022-11-20 12:19:13,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 355.0) internal successors, (2130), 6 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:13,147 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:19:13,147 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 12:19:13,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 12:19:13,148 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-20 12:19:13,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:13,148 INFO L85 PathProgramCache]: Analyzing trace with hash 871799999, now seen corresponding path program 1 times [2022-11-20 12:19:13,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:13,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361580725] [2022-11-20 12:19:13,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:13,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:13,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:13,231 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 12:19:13,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:19:13,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361580725] [2022-11-20 12:19:13,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361580725] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:19:13,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:19:13,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:19:13,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420445088] [2022-11-20 12:19:13,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:19:13,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:19:13,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:19:13,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:19:13,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:19:13,236 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 420 [2022-11-20 12:19:13,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 377 transitions, 828 flow. Second operand has 4 states, 4 states have (on average 355.0) internal successors, (1420), 4 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:13,239 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:19:13,239 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 420 [2022-11-20 12:19:13,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:19:13,903 INFO L130 PetriNetUnfolder]: 214/1275 cut-off events. [2022-11-20 12:19:13,903 INFO L131 PetriNetUnfolder]: For 161/285 co-relation queries the response was YES. [2022-11-20 12:19:13,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1932 conditions, 1275 events. 214/1275 cut-off events. For 161/285 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 9990 event pairs, 90 based on Foata normal form. 8/1016 useless extension candidates. Maximal degree in co-relation 1340. Up to 228 conditions per place. [2022-11-20 12:19:13,964 INFO L137 encePairwiseOnDemand]: 407/420 looper letters, 63 selfloop transitions, 9 changer transitions 0/399 dead transitions. [2022-11-20 12:19:13,964 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 399 transitions, 1023 flow [2022-11-20 12:19:13,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:19:13,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:19:13,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1488 transitions. [2022-11-20 12:19:13,968 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8857142857142857 [2022-11-20 12:19:13,968 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1488 transitions. [2022-11-20 12:19:13,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1488 transitions. [2022-11-20 12:19:13,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:19:13,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1488 transitions. [2022-11-20 12:19:13,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 372.0) internal successors, (1488), 4 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:13,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 420.0) internal successors, (2100), 5 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:13,978 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 420.0) internal successors, (2100), 5 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:13,978 INFO L175 Difference]: Start difference. First operand has 377 places, 377 transitions, 828 flow. Second operand 4 states and 1488 transitions. [2022-11-20 12:19:13,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 399 transitions, 1023 flow [2022-11-20 12:19:13,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 399 transitions, 1005 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-20 12:19:13,987 INFO L231 Difference]: Finished difference. Result has 375 places, 380 transitions, 866 flow [2022-11-20 12:19:13,987 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=806, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=866, PETRI_PLACES=375, PETRI_TRANSITIONS=380} [2022-11-20 12:19:13,988 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 1 predicate places. [2022-11-20 12:19:13,988 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 380 transitions, 866 flow [2022-11-20 12:19:13,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 355.0) internal successors, (1420), 4 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:13,989 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:19:13,989 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 12:19:13,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 12:19:13,990 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-20 12:19:13,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:13,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1890523423, now seen corresponding path program 1 times [2022-11-20 12:19:13,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:13,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849355962] [2022-11-20 12:19:13,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:13,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:14,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:14,076 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 12:19:14,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:19:14,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849355962] [2022-11-20 12:19:14,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849355962] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:19:14,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:19:14,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:19:14,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496588790] [2022-11-20 12:19:14,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:19:14,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:19:14,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:19:14,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:19:14,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:19:14,081 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 420 [2022-11-20 12:19:14,083 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 380 transitions, 866 flow. Second operand has 4 states, 4 states have (on average 355.25) internal successors, (1421), 4 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:14,083 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:19:14,084 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 420 [2022-11-20 12:19:14,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:19:14,515 INFO L130 PetriNetUnfolder]: 132/944 cut-off events. [2022-11-20 12:19:14,516 INFO L131 PetriNetUnfolder]: For 85/85 co-relation queries the response was YES. [2022-11-20 12:19:14,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1518 conditions, 944 events. 132/944 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 5946 event pairs, 48 based on Foata normal form. 6/834 useless extension candidates. Maximal degree in co-relation 1350. Up to 130 conditions per place. [2022-11-20 12:19:14,556 INFO L137 encePairwiseOnDemand]: 411/420 looper letters, 64 selfloop transitions, 7 changer transitions 0/398 dead transitions. [2022-11-20 12:19:14,556 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 398 transitions, 1044 flow [2022-11-20 12:19:14,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:19:14,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:19:14,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1485 transitions. [2022-11-20 12:19:14,560 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8839285714285714 [2022-11-20 12:19:14,560 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1485 transitions. [2022-11-20 12:19:14,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1485 transitions. [2022-11-20 12:19:14,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:19:14,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1485 transitions. [2022-11-20 12:19:14,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 371.25) internal successors, (1485), 4 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 12:19:14,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 420.0) internal successors, (2100), 5 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:14,569 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 420.0) internal successors, (2100), 5 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:14,569 INFO L175 Difference]: Start difference. First operand has 375 places, 380 transitions, 866 flow. Second operand 4 states and 1485 transitions. [2022-11-20 12:19:14,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 398 transitions, 1044 flow [2022-11-20 12:19:14,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 398 transitions, 1039 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:19:14,578 INFO L231 Difference]: Finished difference. Result has 377 places, 378 transitions, 863 flow [2022-11-20 12:19:14,579 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=849, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=863, PETRI_PLACES=377, PETRI_TRANSITIONS=378} [2022-11-20 12:19:14,579 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 3 predicate places. [2022-11-20 12:19:14,580 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 378 transitions, 863 flow [2022-11-20 12:19:14,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 355.25) internal successors, (1421), 4 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:14,581 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:19:14,581 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 12:19:14,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 12:19:14,581 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-20 12:19:14,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:14,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1523315024, now seen corresponding path program 1 times [2022-11-20 12:19:14,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:14,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19592949] [2022-11-20 12:19:14,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:14,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:14,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:14,742 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 12:19:14,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:19:14,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19592949] [2022-11-20 12:19:14,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19592949] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:19:14,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:19:14,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:19:14,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794818279] [2022-11-20 12:19:14,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:19:14,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:19:14,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:19:14,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:19:14,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:19:14,748 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 420 [2022-11-20 12:19:14,750 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 378 transitions, 863 flow. Second operand has 6 states, 6 states have (on average 355.1666666666667) internal successors, (2131), 6 states have internal predecessors, (2131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:14,750 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:19:14,750 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 420 [2022-11-20 12:19:14,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:19:15,447 INFO L130 PetriNetUnfolder]: 277/1876 cut-off events. [2022-11-20 12:19:15,448 INFO L131 PetriNetUnfolder]: For 108/200 co-relation queries the response was YES. [2022-11-20 12:19:15,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2856 conditions, 1876 events. 277/1876 cut-off events. For 108/200 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 13311 event pairs, 108 based on Foata normal form. 2/1650 useless extension candidates. Maximal degree in co-relation 2256. Up to 239 conditions per place. [2022-11-20 12:19:15,512 INFO L137 encePairwiseOnDemand]: 410/420 looper letters, 47 selfloop transitions, 10 changer transitions 0/386 dead transitions. [2022-11-20 12:19:15,512 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 386 transitions, 1002 flow [2022-11-20 12:19:15,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:19:15,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:19:15,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2528 transitions. [2022-11-20 12:19:15,518 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8598639455782313 [2022-11-20 12:19:15,518 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2528 transitions. [2022-11-20 12:19:15,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2528 transitions. [2022-11-20 12:19:15,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:19:15,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2528 transitions. [2022-11-20 12:19:15,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 361.14285714285717) internal successors, (2528), 7 states have internal predecessors, (2528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:15,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:15,532 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:15,532 INFO L175 Difference]: Start difference. First operand has 377 places, 378 transitions, 863 flow. Second operand 7 states and 2528 transitions. [2022-11-20 12:19:15,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 386 transitions, 1002 flow [2022-11-20 12:19:15,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 386 transitions, 991 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:19:15,541 INFO L231 Difference]: Finished difference. Result has 380 places, 377 transitions, 870 flow [2022-11-20 12:19:15,542 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=850, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=870, PETRI_PLACES=380, PETRI_TRANSITIONS=377} [2022-11-20 12:19:15,543 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 6 predicate places. [2022-11-20 12:19:15,543 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 377 transitions, 870 flow [2022-11-20 12:19:15,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 355.1666666666667) internal successors, (2131), 6 states have internal predecessors, (2131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:15,545 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:19:15,545 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 12:19:15,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 12:19:15,546 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-20 12:19:15,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:15,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1553470387, now seen corresponding path program 1 times [2022-11-20 12:19:15,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:15,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622678176] [2022-11-20 12:19:15,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:15,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:15,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:15,623 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 12:19:15,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:19:15,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622678176] [2022-11-20 12:19:15,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622678176] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:19:15,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:19:15,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:19:15,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643399682] [2022-11-20 12:19:15,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:19:15,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:19:15,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:19:15,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:19:15,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:19:15,629 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 420 [2022-11-20 12:19:15,630 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 377 transitions, 870 flow. Second operand has 4 states, 4 states have (on average 355.5) internal successors, (1422), 4 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:15,631 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:19:15,631 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 420 [2022-11-20 12:19:15,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:19:16,082 INFO L130 PetriNetUnfolder]: 163/1107 cut-off events. [2022-11-20 12:19:16,082 INFO L131 PetriNetUnfolder]: For 85/85 co-relation queries the response was YES. [2022-11-20 12:19:16,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1839 conditions, 1107 events. 163/1107 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 7391 event pairs, 74 based on Foata normal form. 6/984 useless extension candidates. Maximal degree in co-relation 1663. Up to 201 conditions per place. [2022-11-20 12:19:16,125 INFO L137 encePairwiseOnDemand]: 411/420 looper letters, 60 selfloop transitions, 7 changer transitions 0/396 dead transitions. [2022-11-20 12:19:16,126 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 396 transitions, 1049 flow [2022-11-20 12:19:16,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:19:16,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:19:16,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1480 transitions. [2022-11-20 12:19:16,129 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8809523809523809 [2022-11-20 12:19:16,129 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1480 transitions. [2022-11-20 12:19:16,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1480 transitions. [2022-11-20 12:19:16,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:19:16,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1480 transitions. [2022-11-20 12:19:16,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:16,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 420.0) internal successors, (2100), 5 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:16,137 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 420.0) internal successors, (2100), 5 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:16,138 INFO L175 Difference]: Start difference. First operand has 380 places, 377 transitions, 870 flow. Second operand 4 states and 1480 transitions. [2022-11-20 12:19:16,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 396 transitions, 1049 flow [2022-11-20 12:19:16,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 396 transitions, 1024 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-20 12:19:16,145 INFO L231 Difference]: Finished difference. Result has 376 places, 378 transitions, 875 flow [2022-11-20 12:19:16,146 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=837, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=875, PETRI_PLACES=376, PETRI_TRANSITIONS=378} [2022-11-20 12:19:16,147 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 2 predicate places. [2022-11-20 12:19:16,147 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 378 transitions, 875 flow [2022-11-20 12:19:16,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 355.5) internal successors, (1422), 4 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:16,148 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:19:16,148 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 12:19:16,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 12:19:16,149 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-20 12:19:16,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:16,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1013590811, now seen corresponding path program 1 times [2022-11-20 12:19:16,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:16,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668724171] [2022-11-20 12:19:16,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:16,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:16,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:16,234 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 12:19:16,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:19:16,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668724171] [2022-11-20 12:19:16,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668724171] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:19:16,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:19:16,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:19:16,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104800970] [2022-11-20 12:19:16,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:19:16,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:19:16,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:19:16,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:19:16,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:19:16,238 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 420 [2022-11-20 12:19:16,240 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 378 transitions, 875 flow. Second operand has 6 states, 6 states have (on average 355.1666666666667) internal successors, (2131), 6 states have internal predecessors, (2131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:16,241 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:19:16,241 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 420 [2022-11-20 12:19:16,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:19:17,303 INFO L130 PetriNetUnfolder]: 563/3170 cut-off events. [2022-11-20 12:19:17,303 INFO L131 PetriNetUnfolder]: For 426/456 co-relation queries the response was YES. [2022-11-20 12:19:17,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4460 conditions, 3170 events. 563/3170 cut-off events. For 426/456 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 33839 event pairs, 128 based on Foata normal form. 0/2444 useless extension candidates. Maximal degree in co-relation 3556. Up to 401 conditions per place. [2022-11-20 12:19:17,401 INFO L137 encePairwiseOnDemand]: 410/420 looper letters, 55 selfloop transitions, 9 changer transitions 0/391 dead transitions. [2022-11-20 12:19:17,401 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 391 transitions, 1035 flow [2022-11-20 12:19:17,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:19:17,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:19:17,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2536 transitions. [2022-11-20 12:19:17,408 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8625850340136054 [2022-11-20 12:19:17,408 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2536 transitions. [2022-11-20 12:19:17,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2536 transitions. [2022-11-20 12:19:17,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:19:17,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2536 transitions. [2022-11-20 12:19:17,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 362.2857142857143) internal successors, (2536), 7 states have internal predecessors, (2536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:17,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:17,422 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:17,422 INFO L175 Difference]: Start difference. First operand has 376 places, 378 transitions, 875 flow. Second operand 7 states and 2536 transitions. [2022-11-20 12:19:17,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 391 transitions, 1035 flow [2022-11-20 12:19:17,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 391 transitions, 1030 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:19:17,431 INFO L231 Difference]: Finished difference. Result has 380 places, 377 transitions, 886 flow [2022-11-20 12:19:17,432 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=868, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=886, PETRI_PLACES=380, PETRI_TRANSITIONS=377} [2022-11-20 12:19:17,432 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 6 predicate places. [2022-11-20 12:19:17,433 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 377 transitions, 886 flow [2022-11-20 12:19:17,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 355.1666666666667) internal successors, (2131), 6 states have internal predecessors, (2131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:17,434 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:19:17,434 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 12:19:17,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 12:19:17,434 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-20 12:19:17,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:17,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1356545265, now seen corresponding path program 1 times [2022-11-20 12:19:17,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:17,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319469020] [2022-11-20 12:19:17,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:17,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:17,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:17,503 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 12:19:17,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:19:17,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319469020] [2022-11-20 12:19:17,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319469020] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:19:17,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:19:17,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:19:17,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725441021] [2022-11-20 12:19:17,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:19:17,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:19:17,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:19:17,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:19:17,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:19:17,507 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 420 [2022-11-20 12:19:17,509 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 377 transitions, 886 flow. Second operand has 4 states, 4 states have (on average 355.25) internal successors, (1421), 4 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:17,509 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:19:17,509 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 420 [2022-11-20 12:19:17,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:19:18,479 INFO L130 PetriNetUnfolder]: 620/2940 cut-off events. [2022-11-20 12:19:18,480 INFO L131 PetriNetUnfolder]: For 639/645 co-relation queries the response was YES. [2022-11-20 12:19:18,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4335 conditions, 2940 events. 620/2940 cut-off events. For 639/645 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 31448 event pairs, 207 based on Foata normal form. 20/2275 useless extension candidates. Maximal degree in co-relation 4245. Up to 615 conditions per place. [2022-11-20 12:19:18,547 INFO L137 encePairwiseOnDemand]: 407/420 looper letters, 62 selfloop transitions, 9 changer transitions 0/398 dead transitions. [2022-11-20 12:19:18,547 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 398 transitions, 1074 flow [2022-11-20 12:19:18,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:19:18,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:19:18,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1487 transitions. [2022-11-20 12:19:18,551 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8851190476190476 [2022-11-20 12:19:18,552 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1487 transitions. [2022-11-20 12:19:18,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1487 transitions. [2022-11-20 12:19:18,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:19:18,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1487 transitions. [2022-11-20 12:19:18,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 371.75) internal successors, (1487), 4 states have internal predecessors, (1487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:18,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 420.0) internal successors, (2100), 5 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:18,560 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 420.0) internal successors, (2100), 5 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:18,560 INFO L175 Difference]: Start difference. First operand has 380 places, 377 transitions, 886 flow. Second operand 4 states and 1487 transitions. [2022-11-20 12:19:18,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 398 transitions, 1074 flow [2022-11-20 12:19:18,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 398 transitions, 1056 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-20 12:19:18,568 INFO L231 Difference]: Finished difference. Result has 378 places, 380 transitions, 924 flow [2022-11-20 12:19:18,569 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=864, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=924, PETRI_PLACES=378, PETRI_TRANSITIONS=380} [2022-11-20 12:19:18,570 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 4 predicate places. [2022-11-20 12:19:18,571 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 380 transitions, 924 flow [2022-11-20 12:19:18,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 355.25) internal successors, (1421), 4 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:18,571 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:19:18,572 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] [2022-11-20 12:19:18,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 12:19:18,572 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-20 12:19:18,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:18,573 INFO L85 PathProgramCache]: Analyzing trace with hash -2133347930, now seen corresponding path program 1 times [2022-11-20 12:19:18,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:18,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982132237] [2022-11-20 12:19:18,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:18,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:18,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:18,645 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 12:19:18,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:19:18,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982132237] [2022-11-20 12:19:18,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982132237] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:19:18,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:19:18,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:19:18,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307015136] [2022-11-20 12:19:18,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:19:18,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:19:18,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:19:18,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:19:18,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:19:18,657 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 420 [2022-11-20 12:19:18,659 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 380 transitions, 924 flow. Second operand has 4 states, 4 states have (on average 355.5) internal successors, (1422), 4 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:18,659 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:19:18,659 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 420 [2022-11-20 12:19:18,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:19:19,553 INFO L130 PetriNetUnfolder]: 250/1485 cut-off events. [2022-11-20 12:19:19,554 INFO L131 PetriNetUnfolder]: For 313/487 co-relation queries the response was YES. [2022-11-20 12:19:19,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2322 conditions, 1485 events. 250/1485 cut-off events. For 313/487 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 12305 event pairs, 96 based on Foata normal form. 10/1177 useless extension candidates. Maximal degree in co-relation 2166. Up to 231 conditions per place. [2022-11-20 12:19:19,650 INFO L137 encePairwiseOnDemand]: 411/420 looper letters, 63 selfloop transitions, 7 changer transitions 0/397 dead transitions. [2022-11-20 12:19:19,650 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 397 transitions, 1097 flow [2022-11-20 12:19:19,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:19:19,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:19:19,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1484 transitions. [2022-11-20 12:19:19,655 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8833333333333333 [2022-11-20 12:19:19,656 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1484 transitions. [2022-11-20 12:19:19,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1484 transitions. [2022-11-20 12:19:19,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:19:19,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1484 transitions. [2022-11-20 12:19:19,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 371.0) internal successors, (1484), 4 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:19,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 420.0) internal successors, (2100), 5 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:19,666 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 420.0) internal successors, (2100), 5 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:19,667 INFO L175 Difference]: Start difference. First operand has 378 places, 380 transitions, 924 flow. Second operand 4 states and 1484 transitions. [2022-11-20 12:19:19,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 397 transitions, 1097 flow [2022-11-20 12:19:19,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 397 transitions, 1092 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:19:19,677 INFO L231 Difference]: Finished difference. Result has 380 places, 378 transitions, 921 flow [2022-11-20 12:19:19,678 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=907, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=921, PETRI_PLACES=380, PETRI_TRANSITIONS=378} [2022-11-20 12:19:19,680 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 6 predicate places. [2022-11-20 12:19:19,680 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 378 transitions, 921 flow [2022-11-20 12:19:19,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 355.5) internal successors, (1422), 4 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:19,681 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:19:19,682 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 12:19:19,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 12:19:19,682 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-20 12:19:19,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:19,683 INFO L85 PathProgramCache]: Analyzing trace with hash 124788053, now seen corresponding path program 1 times [2022-11-20 12:19:19,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:19,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978306114] [2022-11-20 12:19:19,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:19,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:19,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:19,812 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 12:19:19,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:19:19,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978306114] [2022-11-20 12:19:19,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978306114] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:19:19,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:19:19,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:19:19,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489662950] [2022-11-20 12:19:19,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:19:19,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:19:19,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:19:19,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:19:19,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:19:19,817 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 343 out of 420 [2022-11-20 12:19:19,820 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 378 transitions, 921 flow. Second operand has 8 states, 8 states have (on average 345.0) internal successors, (2760), 8 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:19,820 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:19:19,820 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 343 of 420 [2022-11-20 12:19:19,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:19:20,765 INFO L130 PetriNetUnfolder]: 418/2137 cut-off events. [2022-11-20 12:19:20,766 INFO L131 PetriNetUnfolder]: For 152/398 co-relation queries the response was YES. [2022-11-20 12:19:20,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3646 conditions, 2137 events. 418/2137 cut-off events. For 152/398 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 16284 event pairs, 101 based on Foata normal form. 4/1931 useless extension candidates. Maximal degree in co-relation 3490. Up to 219 conditions per place. [2022-11-20 12:19:20,847 INFO L137 encePairwiseOnDemand]: 405/420 looper letters, 67 selfloop transitions, 16 changer transitions 0/402 dead transitions. [2022-11-20 12:19:20,847 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 402 transitions, 1156 flow [2022-11-20 12:19:20,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:19:20,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 12:19:20,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3855 transitions. [2022-11-20 12:19:20,855 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8344155844155844 [2022-11-20 12:19:20,855 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3855 transitions. [2022-11-20 12:19:20,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3855 transitions. [2022-11-20 12:19:20,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:19:20,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3855 transitions. [2022-11-20 12:19:20,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 350.45454545454544) internal successors, (3855), 11 states have internal predecessors, (3855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:20,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 420.0) internal successors, (5040), 12 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:20,875 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 420.0) internal successors, (5040), 12 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:20,875 INFO L175 Difference]: Start difference. First operand has 380 places, 378 transitions, 921 flow. Second operand 11 states and 3855 transitions. [2022-11-20 12:19:20,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 402 transitions, 1156 flow [2022-11-20 12:19:20,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 402 transitions, 1145 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:19:20,884 INFO L231 Difference]: Finished difference. Result has 390 places, 379 transitions, 955 flow [2022-11-20 12:19:20,885 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=910, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=955, PETRI_PLACES=390, PETRI_TRANSITIONS=379} [2022-11-20 12:19:20,886 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 16 predicate places. [2022-11-20 12:19:20,886 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 379 transitions, 955 flow [2022-11-20 12:19:20,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 345.0) internal successors, (2760), 8 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:20,887 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:19:20,887 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 12:19:20,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 12:19:20,888 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-20 12:19:20,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:20,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1709275280, now seen corresponding path program 1 times [2022-11-20 12:19:20,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:20,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576397165] [2022-11-20 12:19:20,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:20,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:20,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:20,981 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 12:19:20,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:19:20,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576397165] [2022-11-20 12:19:20,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576397165] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:19:20,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:19:20,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:19:20,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052966683] [2022-11-20 12:19:20,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:19:20,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:19:20,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:19:20,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:19:20,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:19:20,986 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 420 [2022-11-20 12:19:20,988 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 379 transitions, 955 flow. Second operand has 6 states, 6 states have (on average 355.3333333333333) internal successors, (2132), 6 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:20,988 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:19:20,988 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 420 [2022-11-20 12:19:20,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:19:22,004 INFO L130 PetriNetUnfolder]: 367/2696 cut-off events. [2022-11-20 12:19:22,004 INFO L131 PetriNetUnfolder]: For 449/449 co-relation queries the response was YES. [2022-11-20 12:19:22,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4196 conditions, 2696 events. 367/2696 cut-off events. For 449/449 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 23235 event pairs, 149 based on Foata normal form. 0/2293 useless extension candidates. Maximal degree in co-relation 4038. Up to 328 conditions per place. [2022-11-20 12:19:22,113 INFO L137 encePairwiseOnDemand]: 410/420 looper letters, 47 selfloop transitions, 10 changer transitions 0/387 dead transitions. [2022-11-20 12:19:22,113 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 387 transitions, 1100 flow [2022-11-20 12:19:22,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:19:22,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:19:22,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2528 transitions. [2022-11-20 12:19:22,119 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8598639455782313 [2022-11-20 12:19:22,119 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2528 transitions. [2022-11-20 12:19:22,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2528 transitions. [2022-11-20 12:19:22,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:19:22,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2528 transitions. [2022-11-20 12:19:22,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 361.14285714285717) internal successors, (2528), 7 states have internal predecessors, (2528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:22,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:22,132 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:22,132 INFO L175 Difference]: Start difference. First operand has 390 places, 379 transitions, 955 flow. Second operand 7 states and 2528 transitions. [2022-11-20 12:19:22,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 387 transitions, 1100 flow [2022-11-20 12:19:22,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 387 transitions, 1070 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-11-20 12:19:22,142 INFO L231 Difference]: Finished difference. Result has 389 places, 378 transitions, 949 flow [2022-11-20 12:19:22,143 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=929, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=949, PETRI_PLACES=389, PETRI_TRANSITIONS=378} [2022-11-20 12:19:22,145 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 15 predicate places. [2022-11-20 12:19:22,145 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 378 transitions, 949 flow [2022-11-20 12:19:22,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 355.3333333333333) internal successors, (2132), 6 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:22,146 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:19:22,147 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 12:19:22,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 12:19:22,147 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-20 12:19:22,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:22,147 INFO L85 PathProgramCache]: Analyzing trace with hash -426536634, now seen corresponding path program 1 times [2022-11-20 12:19:22,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:22,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999442231] [2022-11-20 12:19:22,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:22,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:22,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:22,278 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 12:19:22,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:19:22,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999442231] [2022-11-20 12:19:22,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999442231] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:19:22,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:19:22,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:19:22,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662653355] [2022-11-20 12:19:22,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:19:22,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:19:22,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:19:22,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:19:22,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:19:22,288 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 343 out of 420 [2022-11-20 12:19:22,290 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 378 transitions, 949 flow. Second operand has 8 states, 8 states have (on average 345.125) internal successors, (2761), 8 states have internal predecessors, (2761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:22,290 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:19:22,291 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 343 of 420 [2022-11-20 12:19:22,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:19:23,208 INFO L130 PetriNetUnfolder]: 368/2074 cut-off events. [2022-11-20 12:19:23,209 INFO L131 PetriNetUnfolder]: For 327/549 co-relation queries the response was YES. [2022-11-20 12:19:23,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3670 conditions, 2074 events. 368/2074 cut-off events. For 327/549 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 15862 event pairs, 101 based on Foata normal form. 4/1889 useless extension candidates. Maximal degree in co-relation 3512. Up to 219 conditions per place. [2022-11-20 12:19:23,283 INFO L137 encePairwiseOnDemand]: 404/420 looper letters, 69 selfloop transitions, 17 changer transitions 0/404 dead transitions. [2022-11-20 12:19:23,283 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 404 transitions, 1215 flow [2022-11-20 12:19:23,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:19:23,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 12:19:23,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3857 transitions. [2022-11-20 12:19:23,292 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8348484848484848 [2022-11-20 12:19:23,292 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3857 transitions. [2022-11-20 12:19:23,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3857 transitions. [2022-11-20 12:19:23,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:19:23,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3857 transitions. [2022-11-20 12:19:23,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 350.6363636363636) internal successors, (3857), 11 states have internal predecessors, (3857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:23,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 420.0) internal successors, (5040), 12 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:23,312 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 420.0) internal successors, (5040), 12 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:23,312 INFO L175 Difference]: Start difference. First operand has 389 places, 378 transitions, 949 flow. Second operand 11 states and 3857 transitions. [2022-11-20 12:19:23,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 404 transitions, 1215 flow [2022-11-20 12:19:23,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 404 transitions, 1181 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-20 12:19:23,322 INFO L231 Difference]: Finished difference. Result has 395 places, 379 transitions, 976 flow [2022-11-20 12:19:23,323 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=929, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=976, PETRI_PLACES=395, PETRI_TRANSITIONS=379} [2022-11-20 12:19:23,324 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 21 predicate places. [2022-11-20 12:19:23,324 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 379 transitions, 976 flow [2022-11-20 12:19:23,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 345.125) internal successors, (2761), 8 states have internal predecessors, (2761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:23,325 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:19:23,326 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] [2022-11-20 12:19:23,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 12:19:23,326 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-20 12:19:23,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:23,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1060673197, now seen corresponding path program 1 times [2022-11-20 12:19:23,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:23,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488545674] [2022-11-20 12:19:23,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:23,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:23,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:23,404 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 12:19:23,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:19:23,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488545674] [2022-11-20 12:19:23,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488545674] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:19:23,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:19:23,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:19:23,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384611717] [2022-11-20 12:19:23,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:19:23,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:19:23,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:19:23,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:19:23,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:19:23,408 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 420 [2022-11-20 12:19:23,409 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 379 transitions, 976 flow. Second operand has 4 states, 4 states have (on average 355.75) internal successors, (1423), 4 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:23,409 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:19:23,410 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 420 [2022-11-20 12:19:23,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:19:24,327 INFO L130 PetriNetUnfolder]: 313/1770 cut-off events. [2022-11-20 12:19:24,327 INFO L131 PetriNetUnfolder]: For 324/546 co-relation queries the response was YES. [2022-11-20 12:19:24,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2834 conditions, 1770 events. 313/1770 cut-off events. For 324/546 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 15641 event pairs, 85 based on Foata normal form. 10/1406 useless extension candidates. Maximal degree in co-relation 2674. Up to 356 conditions per place. [2022-11-20 12:19:24,435 INFO L137 encePairwiseOnDemand]: 411/420 looper letters, 59 selfloop transitions, 7 changer transitions 0/397 dead transitions. [2022-11-20 12:19:24,436 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 397 transitions, 1150 flow [2022-11-20 12:19:24,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:19:24,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:19:24,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1479 transitions. [2022-11-20 12:19:24,442 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8803571428571428 [2022-11-20 12:19:24,442 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1479 transitions. [2022-11-20 12:19:24,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1479 transitions. [2022-11-20 12:19:24,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:19:24,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1479 transitions. [2022-11-20 12:19:24,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 369.75) internal successors, (1479), 4 states have internal predecessors, (1479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:24,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 420.0) internal successors, (2100), 5 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:24,454 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 420.0) internal successors, (2100), 5 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:24,454 INFO L175 Difference]: Start difference. First operand has 395 places, 379 transitions, 976 flow. Second operand 4 states and 1479 transitions. [2022-11-20 12:19:24,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 397 transitions, 1150 flow [2022-11-20 12:19:24,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 397 transitions, 1120 flow, removed 1 selfloop flow, removed 7 redundant places. [2022-11-20 12:19:24,465 INFO L231 Difference]: Finished difference. Result has 391 places, 380 transitions, 976 flow [2022-11-20 12:19:24,466 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=938, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=976, PETRI_PLACES=391, PETRI_TRANSITIONS=380} [2022-11-20 12:19:24,466 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 17 predicate places. [2022-11-20 12:19:24,467 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 380 transitions, 976 flow [2022-11-20 12:19:24,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 355.75) internal successors, (1423), 4 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:24,467 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:19:24,468 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:19:24,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 12:19:24,468 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-20 12:19:24,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:24,469 INFO L85 PathProgramCache]: Analyzing trace with hash -2106832086, now seen corresponding path program 1 times [2022-11-20 12:19:24,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:24,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594792827] [2022-11-20 12:19:24,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:24,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:24,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:24,648 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 12:19:24,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:19:24,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594792827] [2022-11-20 12:19:24,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594792827] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:19:24,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:19:24,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:19:24,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001542689] [2022-11-20 12:19:24,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:19:24,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:19:24,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:19:24,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:19:24,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:19:24,653 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 333 out of 420 [2022-11-20 12:19:24,656 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 380 transitions, 976 flow. Second operand has 6 states, 6 states have (on average 336.3333333333333) internal successors, (2018), 6 states have internal predecessors, (2018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:24,656 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:19:24,656 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 333 of 420 [2022-11-20 12:19:24,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:19:25,470 INFO L130 PetriNetUnfolder]: 241/1280 cut-off events. [2022-11-20 12:19:25,470 INFO L131 PetriNetUnfolder]: For 143/143 co-relation queries the response was YES. [2022-11-20 12:19:25,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2509 conditions, 1280 events. 241/1280 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 9339 event pairs, 122 based on Foata normal form. 3/1175 useless extension candidates. Maximal degree in co-relation 2347. Up to 315 conditions per place. [2022-11-20 12:19:25,522 INFO L137 encePairwiseOnDemand]: 403/420 looper letters, 74 selfloop transitions, 17 changer transitions 0/400 dead transitions. [2022-11-20 12:19:25,522 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 400 transitions, 1212 flow [2022-11-20 12:19:25,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:19:25,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:19:25,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2421 transitions. [2022-11-20 12:19:25,529 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.823469387755102 [2022-11-20 12:19:25,530 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2421 transitions. [2022-11-20 12:19:25,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2421 transitions. [2022-11-20 12:19:25,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:19:25,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2421 transitions. [2022-11-20 12:19:25,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 345.85714285714283) internal successors, (2421), 7 states have internal predecessors, (2421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:25,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:25,544 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:25,545 INFO L175 Difference]: Start difference. First operand has 391 places, 380 transitions, 976 flow. Second operand 7 states and 2421 transitions. [2022-11-20 12:19:25,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 400 transitions, 1212 flow [2022-11-20 12:19:25,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 400 transitions, 1204 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:19:25,556 INFO L231 Difference]: Finished difference. Result has 399 places, 388 transitions, 1067 flow [2022-11-20 12:19:25,557 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=964, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1067, PETRI_PLACES=399, PETRI_TRANSITIONS=388} [2022-11-20 12:19:25,558 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 25 predicate places. [2022-11-20 12:19:25,558 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 388 transitions, 1067 flow [2022-11-20 12:19:25,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 336.3333333333333) internal successors, (2018), 6 states have internal predecessors, (2018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:25,559 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:19:25,559 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 12:19:25,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 12:19:25,560 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-20 12:19:25,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:25,560 INFO L85 PathProgramCache]: Analyzing trace with hash -160253990, now seen corresponding path program 1 times [2022-11-20 12:19:25,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:25,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752016563] [2022-11-20 12:19:25,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:25,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:25,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:25,693 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 12:19:25,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:19:25,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752016563] [2022-11-20 12:19:25,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752016563] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:19:25,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:19:25,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:19:25,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418958712] [2022-11-20 12:19:25,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:19:25,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:19:25,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:19:25,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:19:25,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:19:25,698 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 333 out of 420 [2022-11-20 12:19:25,701 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 388 transitions, 1067 flow. Second operand has 6 states, 6 states have (on average 336.5) internal successors, (2019), 6 states have internal predecessors, (2019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:25,701 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:19:25,701 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 333 of 420 [2022-11-20 12:19:25,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:19:26,422 INFO L130 PetriNetUnfolder]: 225/1258 cut-off events. [2022-11-20 12:19:26,422 INFO L131 PetriNetUnfolder]: For 325/325 co-relation queries the response was YES. [2022-11-20 12:19:26,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2610 conditions, 1258 events. 225/1258 cut-off events. For 325/325 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 9046 event pairs, 102 based on Foata normal form. 3/1192 useless extension candidates. Maximal degree in co-relation 2445. Up to 265 conditions per place. [2022-11-20 12:19:26,470 INFO L137 encePairwiseOnDemand]: 402/420 looper letters, 94 selfloop transitions, 20 changer transitions 0/423 dead transitions. [2022-11-20 12:19:26,470 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 423 transitions, 1424 flow [2022-11-20 12:19:26,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:19:26,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:19:26,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2435 transitions. [2022-11-20 12:19:26,475 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8282312925170068 [2022-11-20 12:19:26,475 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2435 transitions. [2022-11-20 12:19:26,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2435 transitions. [2022-11-20 12:19:26,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:19:26,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2435 transitions. [2022-11-20 12:19:26,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 347.85714285714283) internal successors, (2435), 7 states have internal predecessors, (2435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:26,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:26,487 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:26,487 INFO L175 Difference]: Start difference. First operand has 399 places, 388 transitions, 1067 flow. Second operand 7 states and 2435 transitions. [2022-11-20 12:19:26,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 423 transitions, 1424 flow [2022-11-20 12:19:26,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 423 transitions, 1412 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:19:26,498 INFO L231 Difference]: Finished difference. Result has 407 places, 399 transitions, 1193 flow [2022-11-20 12:19:26,499 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=1053, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1193, PETRI_PLACES=407, PETRI_TRANSITIONS=399} [2022-11-20 12:19:26,499 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 33 predicate places. [2022-11-20 12:19:26,499 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 399 transitions, 1193 flow [2022-11-20 12:19:26,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 336.5) internal successors, (2019), 6 states have internal predecessors, (2019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:26,500 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:19:26,501 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:19:26,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 12:19:26,501 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-20 12:19:26,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:26,501 INFO L85 PathProgramCache]: Analyzing trace with hash -28056744, now seen corresponding path program 1 times [2022-11-20 12:19:26,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:26,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040713314] [2022-11-20 12:19:26,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:26,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:26,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:26,565 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 12:19:26,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:19:26,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040713314] [2022-11-20 12:19:26,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040713314] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:19:26,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:19:26,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:19:26,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864459131] [2022-11-20 12:19:26,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:19:26,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:19:26,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:19:26,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:19:26,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:19:26,569 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 420 [2022-11-20 12:19:26,571 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 399 transitions, 1193 flow. Second operand has 4 states, 4 states have (on average 355.75) internal successors, (1423), 4 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:26,571 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:19:26,571 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 420 [2022-11-20 12:19:26,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:19:27,630 INFO L130 PetriNetUnfolder]: 727/3244 cut-off events. [2022-11-20 12:19:27,631 INFO L131 PetriNetUnfolder]: For 1116/1122 co-relation queries the response was YES. [2022-11-20 12:19:27,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5243 conditions, 3244 events. 727/3244 cut-off events. For 1116/1122 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 37619 event pairs, 288 based on Foata normal form. 26/2442 useless extension candidates. Maximal degree in co-relation 5141. Up to 629 conditions per place. [2022-11-20 12:19:27,700 INFO L137 encePairwiseOnDemand]: 411/420 looper letters, 62 selfloop transitions, 7 changer transitions 0/415 dead transitions. [2022-11-20 12:19:27,701 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 415 transitions, 1359 flow [2022-11-20 12:19:27,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:19:27,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:19:27,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1483 transitions. [2022-11-20 12:19:27,704 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8827380952380952 [2022-11-20 12:19:27,705 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1483 transitions. [2022-11-20 12:19:27,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1483 transitions. [2022-11-20 12:19:27,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:19:27,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1483 transitions. [2022-11-20 12:19:27,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 370.75) internal successors, (1483), 4 states have internal predecessors, (1483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:27,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 420.0) internal successors, (2100), 5 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:27,712 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 420.0) internal successors, (2100), 5 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:27,713 INFO L175 Difference]: Start difference. First operand has 407 places, 399 transitions, 1193 flow. Second operand 4 states and 1483 transitions. [2022-11-20 12:19:27,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 415 transitions, 1359 flow [2022-11-20 12:19:27,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 415 transitions, 1346 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:19:27,724 INFO L231 Difference]: Finished difference. Result has 408 places, 397 transitions, 1182 flow [2022-11-20 12:19:27,725 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=1168, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1182, PETRI_PLACES=408, PETRI_TRANSITIONS=397} [2022-11-20 12:19:27,726 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 34 predicate places. [2022-11-20 12:19:27,726 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 397 transitions, 1182 flow [2022-11-20 12:19:27,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 355.75) internal successors, (1423), 4 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:27,727 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:19:27,727 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:19:27,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 12:19:27,727 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-20 12:19:27,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:27,728 INFO L85 PathProgramCache]: Analyzing trace with hash -869757851, now seen corresponding path program 1 times [2022-11-20 12:19:27,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:27,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623488629] [2022-11-20 12:19:27,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:27,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:27,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:27,803 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 12:19:27,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:19:27,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623488629] [2022-11-20 12:19:27,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623488629] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:19:27,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:19:27,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:19:27,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938214726] [2022-11-20 12:19:27,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:19:27,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:19:27,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:19:27,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:19:27,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:19:27,808 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 420 [2022-11-20 12:19:27,810 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 397 transitions, 1182 flow. Second operand has 6 states, 6 states have (on average 355.5) internal successors, (2133), 6 states have internal predecessors, (2133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:27,810 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:19:27,810 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 420 [2022-11-20 12:19:27,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:19:29,067 INFO L130 PetriNetUnfolder]: 773/4644 cut-off events. [2022-11-20 12:19:29,067 INFO L131 PetriNetUnfolder]: For 1041/1083 co-relation queries the response was YES. [2022-11-20 12:19:29,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7136 conditions, 4644 events. 773/4644 cut-off events. For 1041/1083 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 53146 event pairs, 546 based on Foata normal form. 0/3679 useless extension candidates. Maximal degree in co-relation 5979. Up to 716 conditions per place. [2022-11-20 12:19:29,193 INFO L137 encePairwiseOnDemand]: 410/420 looper letters, 47 selfloop transitions, 10 changer transitions 0/405 dead transitions. [2022-11-20 12:19:29,194 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 405 transitions, 1318 flow [2022-11-20 12:19:29,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:19:29,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:19:29,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2528 transitions. [2022-11-20 12:19:29,198 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8598639455782313 [2022-11-20 12:19:29,198 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2528 transitions. [2022-11-20 12:19:29,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2528 transitions. [2022-11-20 12:19:29,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:19:29,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2528 transitions. [2022-11-20 12:19:29,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 361.14285714285717) internal successors, (2528), 7 states have internal predecessors, (2528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:29,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:29,209 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:29,210 INFO L175 Difference]: Start difference. First operand has 408 places, 397 transitions, 1182 flow. Second operand 7 states and 2528 transitions. [2022-11-20 12:19:29,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 405 transitions, 1318 flow [2022-11-20 12:19:29,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 405 transitions, 1307 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:19:29,221 INFO L231 Difference]: Finished difference. Result has 411 places, 396 transitions, 1189 flow [2022-11-20 12:19:29,222 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=1169, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1189, PETRI_PLACES=411, PETRI_TRANSITIONS=396} [2022-11-20 12:19:29,222 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 37 predicate places. [2022-11-20 12:19:29,223 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 396 transitions, 1189 flow [2022-11-20 12:19:29,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 355.5) internal successors, (2133), 6 states have internal predecessors, (2133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:29,224 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:19:29,224 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:19:29,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 12:19:29,224 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-20 12:19:29,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:29,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1928070325, now seen corresponding path program 1 times [2022-11-20 12:19:29,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:29,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007636292] [2022-11-20 12:19:29,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:29,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:29,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:29,353 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 12:19:29,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:19:29,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007636292] [2022-11-20 12:19:29,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007636292] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:19:29,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:19:29,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:19:29,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509580660] [2022-11-20 12:19:29,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:19:29,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:19:29,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:19:29,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:19:29,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:19:29,359 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 343 out of 420 [2022-11-20 12:19:29,361 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 396 transitions, 1189 flow. Second operand has 8 states, 8 states have (on average 345.125) internal successors, (2761), 8 states have internal predecessors, (2761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:29,362 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:19:29,362 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 343 of 420 [2022-11-20 12:19:29,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:19:30,469 INFO L130 PetriNetUnfolder]: 573/2978 cut-off events. [2022-11-20 12:19:30,469 INFO L131 PetriNetUnfolder]: For 772/772 co-relation queries the response was YES. [2022-11-20 12:19:30,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5439 conditions, 2978 events. 573/2978 cut-off events. For 772/772 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 26346 event pairs, 103 based on Foata normal form. 0/2578 useless extension candidates. Maximal degree in co-relation 5273. Up to 308 conditions per place. [2022-11-20 12:19:30,570 INFO L137 encePairwiseOnDemand]: 405/420 looper letters, 67 selfloop transitions, 16 changer transitions 0/420 dead transitions. [2022-11-20 12:19:30,570 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 420 transitions, 1424 flow [2022-11-20 12:19:30,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:19:30,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 12:19:30,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3855 transitions. [2022-11-20 12:19:30,575 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8344155844155844 [2022-11-20 12:19:30,575 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3855 transitions. [2022-11-20 12:19:30,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3855 transitions. [2022-11-20 12:19:30,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:19:30,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3855 transitions. [2022-11-20 12:19:30,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 350.45454545454544) internal successors, (3855), 11 states have internal predecessors, (3855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:30,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 420.0) internal successors, (5040), 12 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:30,591 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 420.0) internal successors, (5040), 12 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:30,592 INFO L175 Difference]: Start difference. First operand has 411 places, 396 transitions, 1189 flow. Second operand 11 states and 3855 transitions. [2022-11-20 12:19:30,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 420 transitions, 1424 flow [2022-11-20 12:19:30,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 420 transitions, 1404 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-20 12:19:30,604 INFO L231 Difference]: Finished difference. Result has 417 places, 397 transitions, 1214 flow [2022-11-20 12:19:30,605 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=1169, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1214, PETRI_PLACES=417, PETRI_TRANSITIONS=397} [2022-11-20 12:19:30,606 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 43 predicate places. [2022-11-20 12:19:30,606 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 397 transitions, 1214 flow [2022-11-20 12:19:30,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 345.125) internal successors, (2761), 8 states have internal predecessors, (2761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:30,607 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:19:30,607 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:19:30,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 12:19:30,607 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-20 12:19:30,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:30,608 INFO L85 PathProgramCache]: Analyzing trace with hash -359360947, now seen corresponding path program 1 times [2022-11-20 12:19:30,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:30,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311862359] [2022-11-20 12:19:30,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:30,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:30,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:30,752 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 12:19:30,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:19:30,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311862359] [2022-11-20 12:19:30,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311862359] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:19:30,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:19:30,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:19:30,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875524737] [2022-11-20 12:19:30,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:19:30,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:19:30,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:19:30,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:19:30,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:19:30,756 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 343 out of 420 [2022-11-20 12:19:30,758 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 397 transitions, 1214 flow. Second operand has 8 states, 8 states have (on average 345.25) internal successors, (2762), 8 states have internal predecessors, (2762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:30,758 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:19:30,758 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 343 of 420 [2022-11-20 12:19:30,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:19:32,136 INFO L130 PetriNetUnfolder]: 503/2888 cut-off events. [2022-11-20 12:19:32,137 INFO L131 PetriNetUnfolder]: For 914/914 co-relation queries the response was YES. [2022-11-20 12:19:32,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5366 conditions, 2888 events. 503/2888 cut-off events. For 914/914 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 25374 event pairs, 142 based on Foata normal form. 0/2559 useless extension candidates. Maximal degree in co-relation 5203. Up to 308 conditions per place. [2022-11-20 12:19:32,247 INFO L137 encePairwiseOnDemand]: 404/420 looper letters, 69 selfloop transitions, 17 changer transitions 0/423 dead transitions. [2022-11-20 12:19:32,247 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 423 transitions, 1466 flow [2022-11-20 12:19:32,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:19:32,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 12:19:32,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3857 transitions. [2022-11-20 12:19:32,254 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8348484848484848 [2022-11-20 12:19:32,254 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3857 transitions. [2022-11-20 12:19:32,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3857 transitions. [2022-11-20 12:19:32,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:19:32,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3857 transitions. [2022-11-20 12:19:32,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 350.6363636363636) internal successors, (3857), 11 states have internal predecessors, (3857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:32,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 420.0) internal successors, (5040), 12 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:32,274 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 420.0) internal successors, (5040), 12 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:32,274 INFO L175 Difference]: Start difference. First operand has 417 places, 397 transitions, 1214 flow. Second operand 11 states and 3857 transitions. [2022-11-20 12:19:32,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 423 transitions, 1466 flow [2022-11-20 12:19:32,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 423 transitions, 1442 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-11-20 12:19:32,290 INFO L231 Difference]: Finished difference. Result has 423 places, 398 transitions, 1237 flow [2022-11-20 12:19:32,291 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=1190, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1237, PETRI_PLACES=423, PETRI_TRANSITIONS=398} [2022-11-20 12:19:32,292 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 49 predicate places. [2022-11-20 12:19:32,292 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 398 transitions, 1237 flow [2022-11-20 12:19:32,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 345.25) internal successors, (2762), 8 states have internal predecessors, (2762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:32,293 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:19:32,293 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:19:32,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 12:19:32,294 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-20 12:19:32,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:32,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1738272280, now seen corresponding path program 1 times [2022-11-20 12:19:32,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:32,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510567975] [2022-11-20 12:19:32,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:32,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:32,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:32,367 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 12:19:32,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:19:32,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510567975] [2022-11-20 12:19:32,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510567975] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:19:32,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:19:32,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:19:32,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562788894] [2022-11-20 12:19:32,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:19:32,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:19:32,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:19:32,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:19:32,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:19:32,372 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 420 [2022-11-20 12:19:32,373 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 398 transitions, 1237 flow. Second operand has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:32,374 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:19:32,374 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 420 [2022-11-20 12:19:32,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:19:33,845 INFO L130 PetriNetUnfolder]: 918/3964 cut-off events. [2022-11-20 12:19:33,845 INFO L131 PetriNetUnfolder]: For 1160/1166 co-relation queries the response was YES. [2022-11-20 12:19:33,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6394 conditions, 3964 events. 918/3964 cut-off events. For 1160/1166 co-relation queries the response was YES. Maximal size of possible extension queue 684. Compared 49013 event pairs, 444 based on Foata normal form. 26/2964 useless extension candidates. Maximal degree in co-relation 6285. Up to 967 conditions per place. [2022-11-20 12:19:34,050 INFO L137 encePairwiseOnDemand]: 411/420 looper letters, 58 selfloop transitions, 7 changer transitions 0/415 dead transitions. [2022-11-20 12:19:34,051 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 415 transitions, 1404 flow [2022-11-20 12:19:34,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:19:34,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:19:34,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1478 transitions. [2022-11-20 12:19:34,053 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8797619047619047 [2022-11-20 12:19:34,053 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1478 transitions. [2022-11-20 12:19:34,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1478 transitions. [2022-11-20 12:19:34,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:19:34,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1478 transitions. [2022-11-20 12:19:34,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 369.5) internal successors, (1478), 4 states have internal predecessors, (1478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:34,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 420.0) internal successors, (2100), 5 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:34,058 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 420.0) internal successors, (2100), 5 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:34,058 INFO L175 Difference]: Start difference. First operand has 423 places, 398 transitions, 1237 flow. Second operand 4 states and 1478 transitions. [2022-11-20 12:19:34,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 415 transitions, 1404 flow [2022-11-20 12:19:34,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 415 transitions, 1374 flow, removed 1 selfloop flow, removed 7 redundant places. [2022-11-20 12:19:34,069 INFO L231 Difference]: Finished difference. Result has 419 places, 399 transitions, 1237 flow [2022-11-20 12:19:34,070 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=1199, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1237, PETRI_PLACES=419, PETRI_TRANSITIONS=399} [2022-11-20 12:19:34,071 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 45 predicate places. [2022-11-20 12:19:34,071 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 399 transitions, 1237 flow [2022-11-20 12:19:34,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:34,071 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:19:34,071 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:19:34,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-20 12:19:34,072 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-20 12:19:34,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:34,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1975503023, now seen corresponding path program 1 times [2022-11-20 12:19:34,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:34,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877676258] [2022-11-20 12:19:34,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:34,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:34,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:34,175 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 12:19:34,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:19:34,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877676258] [2022-11-20 12:19:34,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877676258] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:19:34,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:19:34,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:19:34,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538050146] [2022-11-20 12:19:34,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:19:34,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:19:34,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:19:34,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:19:34,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:19:34,179 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 333 out of 420 [2022-11-20 12:19:34,181 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 399 transitions, 1237 flow. Second operand has 6 states, 6 states have (on average 336.5) internal successors, (2019), 6 states have internal predecessors, (2019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:34,181 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:19:34,181 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 333 of 420 [2022-11-20 12:19:34,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:19:35,403 INFO L130 PetriNetUnfolder]: 470/1994 cut-off events. [2022-11-20 12:19:35,403 INFO L131 PetriNetUnfolder]: For 649/991 co-relation queries the response was YES. [2022-11-20 12:19:35,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3869 conditions, 1994 events. 470/1994 cut-off events. For 649/991 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 18935 event pairs, 265 based on Foata normal form. 5/1585 useless extension candidates. Maximal degree in co-relation 3683. Up to 566 conditions per place. [2022-11-20 12:19:35,545 INFO L137 encePairwiseOnDemand]: 403/420 looper letters, 74 selfloop transitions, 17 changer transitions 0/419 dead transitions. [2022-11-20 12:19:35,545 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 419 transitions, 1473 flow [2022-11-20 12:19:35,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:19:35,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:19:35,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2421 transitions. [2022-11-20 12:19:35,549 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.823469387755102 [2022-11-20 12:19:35,550 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2421 transitions. [2022-11-20 12:19:35,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2421 transitions. [2022-11-20 12:19:35,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:19:35,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2421 transitions. [2022-11-20 12:19:35,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 345.85714285714283) internal successors, (2421), 7 states have internal predecessors, (2421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:35,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:35,558 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:35,558 INFO L175 Difference]: Start difference. First operand has 419 places, 399 transitions, 1237 flow. Second operand 7 states and 2421 transitions. [2022-11-20 12:19:35,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 419 transitions, 1473 flow [2022-11-20 12:19:35,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 419 transitions, 1465 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:19:35,570 INFO L231 Difference]: Finished difference. Result has 427 places, 407 transitions, 1328 flow [2022-11-20 12:19:35,570 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=1225, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1328, PETRI_PLACES=427, PETRI_TRANSITIONS=407} [2022-11-20 12:19:35,571 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 53 predicate places. [2022-11-20 12:19:35,571 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 407 transitions, 1328 flow [2022-11-20 12:19:35,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 336.5) internal successors, (2019), 6 states have internal predecessors, (2019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:35,572 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:19:35,572 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:19:35,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-20 12:19:35,572 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-20 12:19:35,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:35,573 INFO L85 PathProgramCache]: Analyzing trace with hash -384020230, now seen corresponding path program 1 times [2022-11-20 12:19:35,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:35,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412233059] [2022-11-20 12:19:35,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:35,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:35,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:35,685 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 12:19:35,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:19:35,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412233059] [2022-11-20 12:19:35,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412233059] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:19:35,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:19:35,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:19:35,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115521197] [2022-11-20 12:19:35,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:19:35,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:19:35,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:19:35,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:19:35,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:19:35,690 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 333 out of 420 [2022-11-20 12:19:35,691 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 407 transitions, 1328 flow. Second operand has 6 states, 6 states have (on average 336.6666666666667) internal successors, (2020), 6 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:35,691 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:19:35,691 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 333 of 420 [2022-11-20 12:19:35,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:19:36,785 INFO L130 PetriNetUnfolder]: 438/1922 cut-off events. [2022-11-20 12:19:36,785 INFO L131 PetriNetUnfolder]: For 925/1244 co-relation queries the response was YES. [2022-11-20 12:19:36,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4022 conditions, 1922 events. 438/1922 cut-off events. For 925/1244 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 18248 event pairs, 165 based on Foata normal form. 5/1598 useless extension candidates. Maximal degree in co-relation 3836. Up to 476 conditions per place. [2022-11-20 12:19:36,882 INFO L137 encePairwiseOnDemand]: 402/420 looper letters, 94 selfloop transitions, 20 changer transitions 0/442 dead transitions. [2022-11-20 12:19:36,882 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 442 transitions, 1685 flow [2022-11-20 12:19:36,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:19:36,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:19:36,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2435 transitions. [2022-11-20 12:19:36,885 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8282312925170068 [2022-11-20 12:19:36,885 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2435 transitions. [2022-11-20 12:19:36,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2435 transitions. [2022-11-20 12:19:36,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:19:36,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2435 transitions. [2022-11-20 12:19:36,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 347.85714285714283) internal successors, (2435), 7 states have internal predecessors, (2435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:36,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:36,893 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:36,893 INFO L175 Difference]: Start difference. First operand has 427 places, 407 transitions, 1328 flow. Second operand 7 states and 2435 transitions. [2022-11-20 12:19:36,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 442 transitions, 1685 flow [2022-11-20 12:19:36,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 442 transitions, 1673 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:19:36,908 INFO L231 Difference]: Finished difference. Result has 435 places, 418 transitions, 1454 flow [2022-11-20 12:19:36,909 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=1314, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1454, PETRI_PLACES=435, PETRI_TRANSITIONS=418} [2022-11-20 12:19:36,909 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 61 predicate places. [2022-11-20 12:19:36,910 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 418 transitions, 1454 flow [2022-11-20 12:19:36,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 336.6666666666667) internal successors, (2020), 6 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:36,910 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:19:36,910 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:19:36,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-20 12:19:36,911 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-20 12:19:36,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:36,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1683537034, now seen corresponding path program 1 times [2022-11-20 12:19:36,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:36,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797731571] [2022-11-20 12:19:36,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:36,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:36,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:37,022 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 12:19:37,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:19:37,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797731571] [2022-11-20 12:19:37,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797731571] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:19:37,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:19:37,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:19:37,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124000505] [2022-11-20 12:19:37,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:19:37,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:19:37,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:19:37,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:19:37,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:19:37,027 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 343 out of 420 [2022-11-20 12:19:37,029 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 418 transitions, 1454 flow. Second operand has 8 states, 8 states have (on average 345.25) internal successors, (2762), 8 states have internal predecessors, (2762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:37,029 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:19:37,029 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 343 of 420 [2022-11-20 12:19:37,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:19:39,426 INFO L130 PetriNetUnfolder]: 1222/5770 cut-off events. [2022-11-20 12:19:39,426 INFO L131 PetriNetUnfolder]: For 2001/2259 co-relation queries the response was YES. [2022-11-20 12:19:39,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9988 conditions, 5770 events. 1222/5770 cut-off events. For 2001/2259 co-relation queries the response was YES. Maximal size of possible extension queue 720. Compared 71429 event pairs, 363 based on Foata normal form. 0/4547 useless extension candidates. Maximal degree in co-relation 7950. Up to 711 conditions per place. [2022-11-20 12:19:39,645 INFO L137 encePairwiseOnDemand]: 405/420 looper letters, 67 selfloop transitions, 16 changer transitions 0/442 dead transitions. [2022-11-20 12:19:39,645 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 442 transitions, 1682 flow [2022-11-20 12:19:39,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:19:39,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 12:19:39,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3855 transitions. [2022-11-20 12:19:39,648 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8344155844155844 [2022-11-20 12:19:39,649 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3855 transitions. [2022-11-20 12:19:39,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3855 transitions. [2022-11-20 12:19:39,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:19:39,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3855 transitions. [2022-11-20 12:19:39,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 350.45454545454544) internal successors, (3855), 11 states have internal predecessors, (3855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:39,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 420.0) internal successors, (5040), 12 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:39,661 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 420.0) internal successors, (5040), 12 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:39,661 INFO L175 Difference]: Start difference. First operand has 435 places, 418 transitions, 1454 flow. Second operand 11 states and 3855 transitions. [2022-11-20 12:19:39,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 442 transitions, 1682 flow [2022-11-20 12:19:39,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 442 transitions, 1674 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:19:39,679 INFO L231 Difference]: Finished difference. Result has 446 places, 419 transitions, 1491 flow [2022-11-20 12:19:39,680 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=1446, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1491, PETRI_PLACES=446, PETRI_TRANSITIONS=419} [2022-11-20 12:19:39,680 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 72 predicate places. [2022-11-20 12:19:39,681 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 419 transitions, 1491 flow [2022-11-20 12:19:39,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 345.25) internal successors, (2762), 8 states have internal predecessors, (2762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:39,681 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:19:39,681 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:19:39,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-20 12:19:39,682 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-20 12:19:39,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:39,682 INFO L85 PathProgramCache]: Analyzing trace with hash 650041727, now seen corresponding path program 1 times [2022-11-20 12:19:39,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:39,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126363531] [2022-11-20 12:19:39,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:39,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:39,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:39,797 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 12:19:39,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:19:39,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126363531] [2022-11-20 12:19:39,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126363531] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:19:39,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:19:39,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:19:39,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583404527] [2022-11-20 12:19:39,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:19:39,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:19:39,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:19:39,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:19:39,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:19:39,802 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 343 out of 420 [2022-11-20 12:19:39,804 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 419 transitions, 1491 flow. Second operand has 8 states, 8 states have (on average 345.375) internal successors, (2763), 8 states have internal predecessors, (2763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:39,804 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:19:39,804 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 343 of 420 [2022-11-20 12:19:39,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:19:41,942 INFO L130 PetriNetUnfolder]: 1072/5567 cut-off events. [2022-11-20 12:19:41,942 INFO L131 PetriNetUnfolder]: For 2141/2525 co-relation queries the response was YES. [2022-11-20 12:19:42,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9917 conditions, 5567 events. 1072/5567 cut-off events. For 2141/2525 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 67480 event pairs, 444 based on Foata normal form. 0/4547 useless extension candidates. Maximal degree in co-relation 7895. Up to 685 conditions per place. [2022-11-20 12:19:42,104 INFO L137 encePairwiseOnDemand]: 404/420 looper letters, 69 selfloop transitions, 17 changer transitions 0/445 dead transitions. [2022-11-20 12:19:42,104 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 445 transitions, 1736 flow [2022-11-20 12:19:42,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:19:42,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 12:19:42,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3857 transitions. [2022-11-20 12:19:42,109 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8348484848484848 [2022-11-20 12:19:42,109 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3857 transitions. [2022-11-20 12:19:42,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3857 transitions. [2022-11-20 12:19:42,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:19:42,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3857 transitions. [2022-11-20 12:19:42,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 350.6363636363636) internal successors, (3857), 11 states have internal predecessors, (3857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:42,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 420.0) internal successors, (5040), 12 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:42,124 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 420.0) internal successors, (5040), 12 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:42,124 INFO L175 Difference]: Start difference. First operand has 446 places, 419 transitions, 1491 flow. Second operand 11 states and 3857 transitions. [2022-11-20 12:19:42,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 445 transitions, 1736 flow [2022-11-20 12:19:42,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 445 transitions, 1712 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-11-20 12:19:42,151 INFO L231 Difference]: Finished difference. Result has 452 places, 420 transitions, 1514 flow [2022-11-20 12:19:42,152 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=1467, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1514, PETRI_PLACES=452, PETRI_TRANSITIONS=420} [2022-11-20 12:19:42,152 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 78 predicate places. [2022-11-20 12:19:42,153 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 420 transitions, 1514 flow [2022-11-20 12:19:42,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 345.375) internal successors, (2763), 8 states have internal predecessors, (2763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:42,153 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:19:42,154 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:19:42,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-20 12:19:42,154 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-20 12:19:42,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:42,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1692828387, now seen corresponding path program 1 times [2022-11-20 12:19:42,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:42,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260441499] [2022-11-20 12:19:42,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:42,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:42,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:42,293 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 12:19:42,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:19:42,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260441499] [2022-11-20 12:19:42,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260441499] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:19:42,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:19:42,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:19:42,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285462192] [2022-11-20 12:19:42,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:19:42,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:19:42,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:19:42,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:19:42,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:19:42,299 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 333 out of 420 [2022-11-20 12:19:42,302 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 420 transitions, 1514 flow. Second operand has 6 states, 6 states have (on average 336.6666666666667) internal successors, (2020), 6 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:42,302 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:19:42,302 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 333 of 420 [2022-11-20 12:19:42,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:19:44,276 INFO L130 PetriNetUnfolder]: 1398/5010 cut-off events. [2022-11-20 12:19:44,276 INFO L131 PetriNetUnfolder]: For 2345/2351 co-relation queries the response was YES. [2022-11-20 12:19:44,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9264 conditions, 5010 events. 1398/5010 cut-off events. For 2345/2351 co-relation queries the response was YES. Maximal size of possible extension queue 1044. Compared 63106 event pairs, 789 based on Foata normal form. 26/3863 useless extension candidates. Maximal degree in co-relation 9141. Up to 1567 conditions per place. [2022-11-20 12:19:44,374 INFO L137 encePairwiseOnDemand]: 403/420 looper letters, 73 selfloop transitions, 17 changer transitions 1/440 dead transitions. [2022-11-20 12:19:44,374 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 440 transitions, 1745 flow [2022-11-20 12:19:44,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:19:44,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:19:44,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2421 transitions. [2022-11-20 12:19:44,377 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.823469387755102 [2022-11-20 12:19:44,377 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2421 transitions. [2022-11-20 12:19:44,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2421 transitions. [2022-11-20 12:19:44,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:19:44,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2421 transitions. [2022-11-20 12:19:44,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 345.85714285714283) internal successors, (2421), 7 states have internal predecessors, (2421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:44,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:44,385 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:44,385 INFO L175 Difference]: Start difference. First operand has 452 places, 420 transitions, 1514 flow. Second operand 7 states and 2421 transitions. [2022-11-20 12:19:44,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 440 transitions, 1745 flow [2022-11-20 12:19:44,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 440 transitions, 1717 flow, removed 1 selfloop flow, removed 7 redundant places. [2022-11-20 12:19:44,402 INFO L231 Difference]: Finished difference. Result has 455 places, 428 transitions, 1585 flow [2022-11-20 12:19:44,402 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=1482, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1585, PETRI_PLACES=455, PETRI_TRANSITIONS=428} [2022-11-20 12:19:44,403 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 81 predicate places. [2022-11-20 12:19:44,403 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 428 transitions, 1585 flow [2022-11-20 12:19:44,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 336.6666666666667) internal successors, (2020), 6 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:44,404 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:19:44,404 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:19:44,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-20 12:19:44,404 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-20 12:19:44,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:44,405 INFO L85 PathProgramCache]: Analyzing trace with hash -103309697, now seen corresponding path program 1 times [2022-11-20 12:19:44,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:44,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615352450] [2022-11-20 12:19:44,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:44,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:44,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:44,486 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 12:19:44,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:19:44,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615352450] [2022-11-20 12:19:44,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615352450] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:19:44,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:19:44,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:19:44,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919699198] [2022-11-20 12:19:44,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:19:44,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:19:44,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:19:44,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:19:44,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:19:44,492 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 420 [2022-11-20 12:19:44,494 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 428 transitions, 1585 flow. Second operand has 6 states, 6 states have (on average 356.1666666666667) internal successors, (2137), 6 states have internal predecessors, (2137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:44,494 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:19:44,494 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 420 [2022-11-20 12:19:44,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:19:45,336 INFO L130 PetriNetUnfolder]: 171/1457 cut-off events. [2022-11-20 12:19:45,336 INFO L131 PetriNetUnfolder]: For 675/675 co-relation queries the response was YES. [2022-11-20 12:19:45,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3053 conditions, 1457 events. 171/1457 cut-off events. For 675/675 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 10261 event pairs, 45 based on Foata normal form. 0/1430 useless extension candidates. Maximal degree in co-relation 2798. Up to 211 conditions per place. [2022-11-20 12:19:45,402 INFO L137 encePairwiseOnDemand]: 412/420 looper letters, 53 selfloop transitions, 8 changer transitions 0/439 dead transitions. [2022-11-20 12:19:45,402 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 439 transitions, 1743 flow [2022-11-20 12:19:45,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:19:45,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:19:45,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2528 transitions. [2022-11-20 12:19:45,410 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8598639455782313 [2022-11-20 12:19:45,410 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2528 transitions. [2022-11-20 12:19:45,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2528 transitions. [2022-11-20 12:19:45,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:19:45,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2528 transitions. [2022-11-20 12:19:45,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 361.14285714285717) internal successors, (2528), 7 states have internal predecessors, (2528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:45,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:45,418 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:45,418 INFO L175 Difference]: Start difference. First operand has 455 places, 428 transitions, 1585 flow. Second operand 7 states and 2528 transitions. [2022-11-20 12:19:45,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 439 transitions, 1743 flow [2022-11-20 12:19:45,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 439 transitions, 1736 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:19:45,436 INFO L231 Difference]: Finished difference. Result has 459 places, 428 transitions, 1594 flow [2022-11-20 12:19:45,436 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=1576, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1594, PETRI_PLACES=459, PETRI_TRANSITIONS=428} [2022-11-20 12:19:45,437 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 85 predicate places. [2022-11-20 12:19:45,437 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 428 transitions, 1594 flow [2022-11-20 12:19:45,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 356.1666666666667) internal successors, (2137), 6 states have internal predecessors, (2137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:45,438 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:19:45,438 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:19:45,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-20 12:19:45,439 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-20 12:19:45,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:45,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1665103887, now seen corresponding path program 1 times [2022-11-20 12:19:45,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:45,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963138639] [2022-11-20 12:19:45,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:45,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:45,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:45,550 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 12:19:45,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:19:45,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963138639] [2022-11-20 12:19:45,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963138639] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:19:45,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:19:45,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:19:45,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848967835] [2022-11-20 12:19:45,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:19:45,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:19:45,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:19:45,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:19:45,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:19:45,554 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 333 out of 420 [2022-11-20 12:19:45,556 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 428 transitions, 1594 flow. Second operand has 6 states, 6 states have (on average 336.8333333333333) internal successors, (2021), 6 states have internal predecessors, (2021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:45,556 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:19:45,556 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 333 of 420 [2022-11-20 12:19:45,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:19:47,478 INFO L130 PetriNetUnfolder]: 1302/4875 cut-off events. [2022-11-20 12:19:47,478 INFO L131 PetriNetUnfolder]: For 2749/2764 co-relation queries the response was YES. [2022-11-20 12:19:47,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9558 conditions, 4875 events. 1302/4875 cut-off events. For 2749/2764 co-relation queries the response was YES. Maximal size of possible extension queue 972. Compared 60488 event pairs, 585 based on Foata normal form. 22/3906 useless extension candidates. Maximal degree in co-relation 9431. Up to 1317 conditions per place. [2022-11-20 12:19:47,581 INFO L137 encePairwiseOnDemand]: 402/420 looper letters, 93 selfloop transitions, 20 changer transitions 1/463 dead transitions. [2022-11-20 12:19:47,581 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 463 transitions, 1944 flow [2022-11-20 12:19:47,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:19:47,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:19:47,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2435 transitions. [2022-11-20 12:19:47,584 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8282312925170068 [2022-11-20 12:19:47,584 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2435 transitions. [2022-11-20 12:19:47,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2435 transitions. [2022-11-20 12:19:47,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:19:47,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2435 transitions. [2022-11-20 12:19:47,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 347.85714285714283) internal successors, (2435), 7 states have internal predecessors, (2435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:47,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:47,589 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:47,589 INFO L175 Difference]: Start difference. First operand has 459 places, 428 transitions, 1594 flow. Second operand 7 states and 2435 transitions. [2022-11-20 12:19:47,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 463 transitions, 1944 flow [2022-11-20 12:19:47,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 463 transitions, 1935 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:19:47,612 INFO L231 Difference]: Finished difference. Result has 465 places, 439 transitions, 1721 flow [2022-11-20 12:19:47,613 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=1581, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1721, PETRI_PLACES=465, PETRI_TRANSITIONS=439} [2022-11-20 12:19:47,613 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 91 predicate places. [2022-11-20 12:19:47,613 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 439 transitions, 1721 flow [2022-11-20 12:19:47,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 336.8333333333333) internal successors, (2021), 6 states have internal predecessors, (2021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:47,614 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:19:47,614 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:19:47,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-20 12:19:47,615 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-20 12:19:47,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:47,615 INFO L85 PathProgramCache]: Analyzing trace with hash 296815839, now seen corresponding path program 1 times [2022-11-20 12:19:47,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:47,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24533555] [2022-11-20 12:19:47,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:47,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:47,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:47,696 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 12:19:47,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:19:47,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24533555] [2022-11-20 12:19:47,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24533555] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:19:47,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:19:47,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:19:47,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133798619] [2022-11-20 12:19:47,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:19:47,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:19:47,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:19:47,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:19:47,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:19:47,701 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 420 [2022-11-20 12:19:47,703 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 439 transitions, 1721 flow. Second operand has 6 states, 6 states have (on average 356.3333333333333) internal successors, (2138), 6 states have internal predecessors, (2138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:47,703 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:19:47,703 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 420 [2022-11-20 12:19:47,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:19:51,336 INFO L130 PetriNetUnfolder]: 1433/11192 cut-off events. [2022-11-20 12:19:51,336 INFO L131 PetriNetUnfolder]: For 6970/7199 co-relation queries the response was YES. [2022-11-20 12:19:51,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22532 conditions, 11192 events. 1433/11192 cut-off events. For 6970/7199 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 149587 event pairs, 801 based on Foata normal form. 45/10193 useless extension candidates. Maximal degree in co-relation 22240. Up to 1113 conditions per place. [2022-11-20 12:19:51,665 INFO L137 encePairwiseOnDemand]: 412/420 looper letters, 53 selfloop transitions, 8 changer transitions 0/450 dead transitions. [2022-11-20 12:19:51,665 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 450 transitions, 1879 flow [2022-11-20 12:19:51,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:19:51,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:19:51,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2528 transitions. [2022-11-20 12:19:51,668 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8598639455782313 [2022-11-20 12:19:51,668 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2528 transitions. [2022-11-20 12:19:51,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2528 transitions. [2022-11-20 12:19:51,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:19:51,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2528 transitions. [2022-11-20 12:19:51,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 361.14285714285717) internal successors, (2528), 7 states have internal predecessors, (2528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:51,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:51,676 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:51,676 INFO L175 Difference]: Start difference. First operand has 465 places, 439 transitions, 1721 flow. Second operand 7 states and 2528 transitions. [2022-11-20 12:19:51,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 450 transitions, 1879 flow [2022-11-20 12:19:51,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 450 transitions, 1871 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:19:51,791 INFO L231 Difference]: Finished difference. Result has 469 places, 439 transitions, 1729 flow [2022-11-20 12:19:51,791 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=1711, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1729, PETRI_PLACES=469, PETRI_TRANSITIONS=439} [2022-11-20 12:19:51,792 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 95 predicate places. [2022-11-20 12:19:51,793 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 439 transitions, 1729 flow [2022-11-20 12:19:51,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 356.3333333333333) internal successors, (2138), 6 states have internal predecessors, (2138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:51,793 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:19:51,793 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:19:51,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-20 12:19:51,794 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-20 12:19:51,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:51,794 INFO L85 PathProgramCache]: Analyzing trace with hash 2011984201, now seen corresponding path program 1 times [2022-11-20 12:19:51,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:51,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870341908] [2022-11-20 12:19:51,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:51,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:51,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:51,900 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 12:19:51,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:19:51,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870341908] [2022-11-20 12:19:51,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870341908] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:19:51,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:19:51,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:19:51,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697537293] [2022-11-20 12:19:51,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:19:51,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:19:51,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:19:51,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:19:51,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:19:51,905 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 420 [2022-11-20 12:19:51,906 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 439 transitions, 1729 flow. Second operand has 6 states, 6 states have (on average 356.5) internal successors, (2139), 6 states have internal predecessors, (2139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:51,906 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:19:51,907 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 420 [2022-11-20 12:19:51,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:19:52,755 INFO L130 PetriNetUnfolder]: 168/1447 cut-off events. [2022-11-20 12:19:52,755 INFO L131 PetriNetUnfolder]: For 757/757 co-relation queries the response was YES. [2022-11-20 12:19:52,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3102 conditions, 1447 events. 168/1447 cut-off events. For 757/757 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 10143 event pairs, 63 based on Foata normal form. 0/1428 useless extension candidates. Maximal degree in co-relation 2816. Up to 197 conditions per place. [2022-11-20 12:19:52,807 INFO L137 encePairwiseOnDemand]: 414/420 looper letters, 49 selfloop transitions, 6 changer transitions 0/444 dead transitions. [2022-11-20 12:19:52,807 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 444 transitions, 1855 flow [2022-11-20 12:19:52,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:19:52,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:19:52,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2166 transitions. [2022-11-20 12:19:52,810 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8595238095238096 [2022-11-20 12:19:52,810 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2166 transitions. [2022-11-20 12:19:52,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2166 transitions. [2022-11-20 12:19:52,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:19:52,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2166 transitions. [2022-11-20 12:19:52,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 361.0) internal successors, (2166), 6 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:52,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 420.0) internal successors, (2940), 7 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:52,813 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 420.0) internal successors, (2940), 7 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:52,813 INFO L175 Difference]: Start difference. First operand has 469 places, 439 transitions, 1729 flow. Second operand 6 states and 2166 transitions. [2022-11-20 12:19:52,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 444 transitions, 1855 flow [2022-11-20 12:19:52,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 444 transitions, 1849 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:19:52,831 INFO L231 Difference]: Finished difference. Result has 470 places, 438 transitions, 1733 flow [2022-11-20 12:19:52,831 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=1721, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1733, PETRI_PLACES=470, PETRI_TRANSITIONS=438} [2022-11-20 12:19:52,832 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 96 predicate places. [2022-11-20 12:19:52,832 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 438 transitions, 1733 flow [2022-11-20 12:19:52,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 356.5) internal successors, (2139), 6 states have internal predecessors, (2139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:52,833 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:19:52,833 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:19:52,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-20 12:19:52,833 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-20 12:19:52,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:52,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1317158476, now seen corresponding path program 1 times [2022-11-20 12:19:52,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:52,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510309013] [2022-11-20 12:19:52,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:52,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:52,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:52,928 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 12:19:52,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:19:52,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510309013] [2022-11-20 12:19:52,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510309013] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:19:52,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:19:52,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:19:52,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057221594] [2022-11-20 12:19:52,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:19:52,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:19:52,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:19:52,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:19:52,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:19:52,932 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 420 [2022-11-20 12:19:52,933 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 438 transitions, 1733 flow. Second operand has 6 states, 6 states have (on average 356.5) internal successors, (2139), 6 states have internal predecessors, (2139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:52,934 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:19:52,934 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 420 [2022-11-20 12:19:52,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:19:55,880 INFO L130 PetriNetUnfolder]: 1736/8846 cut-off events. [2022-11-20 12:19:55,880 INFO L131 PetriNetUnfolder]: For 5937/7209 co-relation queries the response was YES. [2022-11-20 12:19:56,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18385 conditions, 8846 events. 1736/8846 cut-off events. For 5937/7209 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 109021 event pairs, 702 based on Foata normal form. 6/7837 useless extension candidates. Maximal degree in co-relation 18085. Up to 1459 conditions per place. [2022-11-20 12:19:56,049 INFO L137 encePairwiseOnDemand]: 412/420 looper letters, 57 selfloop transitions, 8 changer transitions 0/452 dead transitions. [2022-11-20 12:19:56,049 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 452 transitions, 1911 flow [2022-11-20 12:19:56,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:19:56,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:19:56,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2528 transitions. [2022-11-20 12:19:56,052 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8598639455782313 [2022-11-20 12:19:56,052 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2528 transitions. [2022-11-20 12:19:56,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2528 transitions. [2022-11-20 12:19:56,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:19:56,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2528 transitions. [2022-11-20 12:19:56,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 361.14285714285717) internal successors, (2528), 7 states have internal predecessors, (2528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:56,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:56,058 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:56,058 INFO L175 Difference]: Start difference. First operand has 470 places, 438 transitions, 1733 flow. Second operand 7 states and 2528 transitions. [2022-11-20 12:19:56,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 452 transitions, 1911 flow [2022-11-20 12:19:56,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 452 transitions, 1900 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:19:56,121 INFO L231 Difference]: Finished difference. Result has 471 places, 438 transitions, 1738 flow [2022-11-20 12:19:56,122 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=1720, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1738, PETRI_PLACES=471, PETRI_TRANSITIONS=438} [2022-11-20 12:19:56,122 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 97 predicate places. [2022-11-20 12:19:56,122 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 438 transitions, 1738 flow [2022-11-20 12:19:56,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 356.5) internal successors, (2139), 6 states have internal predecessors, (2139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:56,123 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:19:56,123 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:19:56,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-20 12:19:56,124 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-20 12:19:56,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:56,124 INFO L85 PathProgramCache]: Analyzing trace with hash 144362478, now seen corresponding path program 1 times [2022-11-20 12:19:56,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:56,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676147409] [2022-11-20 12:19:56,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:56,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:56,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:56,258 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 12:19:56,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:19:56,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676147409] [2022-11-20 12:19:56,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676147409] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:19:56,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:19:56,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:19:56,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296859310] [2022-11-20 12:19:56,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:19:56,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:19:56,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:19:56,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:19:56,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:19:56,263 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 343 out of 420 [2022-11-20 12:19:56,265 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 438 transitions, 1738 flow. Second operand has 8 states, 8 states have (on average 346.5) internal successors, (2772), 8 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:56,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:19:56,266 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 343 of 420 [2022-11-20 12:19:56,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:19:57,439 INFO L130 PetriNetUnfolder]: 228/1498 cut-off events. [2022-11-20 12:19:57,439 INFO L131 PetriNetUnfolder]: For 751/751 co-relation queries the response was YES. [2022-11-20 12:19:57,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3338 conditions, 1498 events. 228/1498 cut-off events. For 751/751 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 10707 event pairs, 51 based on Foata normal form. 8/1486 useless extension candidates. Maximal degree in co-relation 3049. Up to 155 conditions per place. [2022-11-20 12:19:57,498 INFO L137 encePairwiseOnDemand]: 406/420 looper letters, 65 selfloop transitions, 17 changer transitions 0/457 dead transitions. [2022-11-20 12:19:57,498 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 457 transitions, 1950 flow [2022-11-20 12:19:57,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:19:57,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 12:19:57,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3850 transitions. [2022-11-20 12:19:57,505 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2022-11-20 12:19:57,505 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3850 transitions. [2022-11-20 12:19:57,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3850 transitions. [2022-11-20 12:19:57,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:19:57,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3850 transitions. [2022-11-20 12:19:57,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 350.0) internal successors, (3850), 11 states have internal predecessors, (3850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:57,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 420.0) internal successors, (5040), 12 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:57,520 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 420.0) internal successors, (5040), 12 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:57,521 INFO L175 Difference]: Start difference. First operand has 471 places, 438 transitions, 1738 flow. Second operand 11 states and 3850 transitions. [2022-11-20 12:19:57,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 457 transitions, 1950 flow [2022-11-20 12:19:57,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 457 transitions, 1937 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:19:57,540 INFO L231 Difference]: Finished difference. Result has 476 places, 436 transitions, 1744 flow [2022-11-20 12:19:57,541 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=1710, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1744, PETRI_PLACES=476, PETRI_TRANSITIONS=436} [2022-11-20 12:19:57,542 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 102 predicate places. [2022-11-20 12:19:57,542 INFO L495 AbstractCegarLoop]: Abstraction has has 476 places, 436 transitions, 1744 flow [2022-11-20 12:19:57,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 346.5) internal successors, (2772), 8 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:57,543 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:19:57,543 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:19:57,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-20 12:19:57,543 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-20 12:19:57,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:57,544 INFO L85 PathProgramCache]: Analyzing trace with hash 705067017, now seen corresponding path program 1 times [2022-11-20 12:19:57,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:57,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324454763] [2022-11-20 12:19:57,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:57,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:57,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:57,637 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 12:19:57,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:19:57,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324454763] [2022-11-20 12:19:57,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324454763] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:19:57,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:19:57,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:19:57,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299450681] [2022-11-20 12:19:57,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:19:57,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:19:57,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:19:57,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:19:57,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:19:57,642 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 420 [2022-11-20 12:19:57,645 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 436 transitions, 1744 flow. Second operand has 6 states, 6 states have (on average 356.6666666666667) internal successors, (2140), 6 states have internal predecessors, (2140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:57,645 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:19:57,645 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 420 [2022-11-20 12:19:57,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:20:01,211 INFO L130 PetriNetUnfolder]: 1406/10909 cut-off events. [2022-11-20 12:20:01,211 INFO L131 PetriNetUnfolder]: For 7189/7960 co-relation queries the response was YES. [2022-11-20 12:20:01,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22176 conditions, 10909 events. 1406/10909 cut-off events. For 7189/7960 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 146002 event pairs, 798 based on Foata normal form. 47/10191 useless extension candidates. Maximal degree in co-relation 21869. Up to 1029 conditions per place. [2022-11-20 12:20:01,605 INFO L137 encePairwiseOnDemand]: 414/420 looper letters, 52 selfloop transitions, 6 changer transitions 0/443 dead transitions. [2022-11-20 12:20:01,605 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 443 transitions, 1886 flow [2022-11-20 12:20:01,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:20:01,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:20:01,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2166 transitions. [2022-11-20 12:20:01,609 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8595238095238096 [2022-11-20 12:20:01,609 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2166 transitions. [2022-11-20 12:20:01,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2166 transitions. [2022-11-20 12:20:01,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:20:01,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2166 transitions. [2022-11-20 12:20:01,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 361.0) internal successors, (2166), 6 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:01,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 420.0) internal successors, (2940), 7 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:01,616 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 420.0) internal successors, (2940), 7 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:01,616 INFO L175 Difference]: Start difference. First operand has 476 places, 436 transitions, 1744 flow. Second operand 6 states and 2166 transitions. [2022-11-20 12:20:01,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 443 transitions, 1886 flow [2022-11-20 12:20:01,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 443 transitions, 1849 flow, removed 1 selfloop flow, removed 9 redundant places. [2022-11-20 12:20:01,712 INFO L231 Difference]: Finished difference. Result has 471 places, 435 transitions, 1717 flow [2022-11-20 12:20:01,713 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=1705, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1717, PETRI_PLACES=471, PETRI_TRANSITIONS=435} [2022-11-20 12:20:01,713 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 97 predicate places. [2022-11-20 12:20:01,714 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 435 transitions, 1717 flow [2022-11-20 12:20:01,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 356.6666666666667) internal successors, (2140), 6 states have internal predecessors, (2140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:01,714 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:20:01,714 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:20:01,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-20 12:20:01,715 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-20 12:20:01,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:01,716 INFO L85 PathProgramCache]: Analyzing trace with hash 180270591, now seen corresponding path program 1 times [2022-11-20 12:20:01,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:20:01,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570633635] [2022-11-20 12:20:01,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:01,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:20:01,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:01,838 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 12:20:01,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:20:01,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570633635] [2022-11-20 12:20:01,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570633635] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:20:01,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:20:01,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:20:01,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434523449] [2022-11-20 12:20:01,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:20:01,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:20:01,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:20:01,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:20:01,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:20:01,842 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 343 out of 420 [2022-11-20 12:20:01,843 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 435 transitions, 1717 flow. Second operand has 8 states, 8 states have (on average 346.625) internal successors, (2773), 8 states have internal predecessors, (2773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:01,844 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:20:01,844 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 343 of 420 [2022-11-20 12:20:01,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:20:02,856 INFO L130 PetriNetUnfolder]: 198/1459 cut-off events. [2022-11-20 12:20:02,856 INFO L131 PetriNetUnfolder]: For 700/700 co-relation queries the response was YES. [2022-11-20 12:20:02,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3164 conditions, 1459 events. 198/1459 cut-off events. For 700/700 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 10244 event pairs, 51 based on Foata normal form. 8/1448 useless extension candidates. Maximal degree in co-relation 2878. Up to 141 conditions per place. [2022-11-20 12:20:02,904 INFO L137 encePairwiseOnDemand]: 406/420 looper letters, 66 selfloop transitions, 17 changer transitions 0/457 dead transitions. [2022-11-20 12:20:02,904 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 457 transitions, 1951 flow [2022-11-20 12:20:02,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:20:02,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 12:20:02,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3851 transitions. [2022-11-20 12:20:02,909 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8335497835497836 [2022-11-20 12:20:02,909 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3851 transitions. [2022-11-20 12:20:02,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3851 transitions. [2022-11-20 12:20:02,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:20:02,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3851 transitions. [2022-11-20 12:20:02,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 350.09090909090907) internal successors, (3851), 11 states have internal predecessors, (3851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:02,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 420.0) internal successors, (5040), 12 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:02,920 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 420.0) internal successors, (5040), 12 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:02,920 INFO L175 Difference]: Start difference. First operand has 471 places, 435 transitions, 1717 flow. Second operand 11 states and 3851 transitions. [2022-11-20 12:20:02,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 457 transitions, 1951 flow [2022-11-20 12:20:02,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 457 transitions, 1933 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 12:20:02,936 INFO L231 Difference]: Finished difference. Result has 475 places, 434 transitions, 1729 flow [2022-11-20 12:20:02,937 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=1695, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1729, PETRI_PLACES=475, PETRI_TRANSITIONS=434} [2022-11-20 12:20:02,937 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 101 predicate places. [2022-11-20 12:20:02,937 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 434 transitions, 1729 flow [2022-11-20 12:20:02,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 346.625) internal successors, (2773), 8 states have internal predecessors, (2773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:02,938 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:20:02,938 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:20:02,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-20 12:20:02,939 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting thread3Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-20 12:20:02,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:02,939 INFO L85 PathProgramCache]: Analyzing trace with hash -440797442, now seen corresponding path program 1 times [2022-11-20 12:20:02,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:20:02,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824385835] [2022-11-20 12:20:02,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:02,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:20:02,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:03,012 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 12:20:03,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:20:03,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824385835] [2022-11-20 12:20:03,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824385835] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:20:03,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:20:03,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:20:03,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368916725] [2022-11-20 12:20:03,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:20:03,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:20:03,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:20:03,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:20:03,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:20:03,016 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 420 [2022-11-20 12:20:03,018 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 434 transitions, 1729 flow. Second operand has 6 states, 6 states have (on average 356.8333333333333) internal successors, (2141), 6 states have internal predecessors, (2141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:03,018 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:20:03,018 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 420 [2022-11-20 12:20:03,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:20:05,571 INFO L130 PetriNetUnfolder]: 1650/6957 cut-off events. [2022-11-20 12:20:05,571 INFO L131 PetriNetUnfolder]: For 5249/6500 co-relation queries the response was YES. [2022-11-20 12:20:05,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14880 conditions, 6957 events. 1650/6957 cut-off events. For 5249/6500 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 81449 event pairs, 726 based on Foata normal form. 6/5982 useless extension candidates. Maximal degree in co-relation 14584. Up to 1334 conditions per place. [2022-11-20 12:20:05,723 INFO L137 encePairwiseOnDemand]: 414/420 looper letters, 52 selfloop transitions, 6 changer transitions 0/441 dead transitions. [2022-11-20 12:20:05,723 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 441 transitions, 1869 flow [2022-11-20 12:20:05,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:20:05,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:20:05,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2166 transitions. [2022-11-20 12:20:05,726 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8595238095238096 [2022-11-20 12:20:05,727 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2166 transitions. [2022-11-20 12:20:05,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2166 transitions. [2022-11-20 12:20:05,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:20:05,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2166 transitions. [2022-11-20 12:20:05,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 361.0) internal successors, (2166), 6 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:05,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 420.0) internal successors, (2940), 7 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:05,736 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 420.0) internal successors, (2940), 7 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:05,736 INFO L175 Difference]: Start difference. First operand has 475 places, 434 transitions, 1729 flow. Second operand 6 states and 2166 transitions. [2022-11-20 12:20:05,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 441 transitions, 1869 flow [2022-11-20 12:20:05,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 441 transitions, 1832 flow, removed 1 selfloop flow, removed 9 redundant places. [2022-11-20 12:20:05,795 INFO L231 Difference]: Finished difference. Result has 470 places, 433 transitions, 1702 flow [2022-11-20 12:20:05,795 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=1690, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1702, PETRI_PLACES=470, PETRI_TRANSITIONS=433} [2022-11-20 12:20:05,796 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 96 predicate places. [2022-11-20 12:20:05,796 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 433 transitions, 1702 flow [2022-11-20 12:20:05,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 356.8333333333333) internal successors, (2141), 6 states have internal predecessors, (2141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:05,797 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:20:05,797 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:20:05,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-20 12:20:05,797 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-20 12:20:05,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:05,798 INFO L85 PathProgramCache]: Analyzing trace with hash 115589454, now seen corresponding path program 1 times [2022-11-20 12:20:05,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:20:05,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616819036] [2022-11-20 12:20:05,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:05,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:20:05,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:05,946 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 12:20:05,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:20:05,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616819036] [2022-11-20 12:20:05,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616819036] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:20:05,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:20:05,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:20:05,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192621047] [2022-11-20 12:20:05,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:20:05,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:20:05,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:20:05,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:20:05,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:20:05,952 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 343 out of 420 [2022-11-20 12:20:05,954 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 433 transitions, 1702 flow. Second operand has 8 states, 8 states have (on average 346.625) internal successors, (2773), 8 states have internal predecessors, (2773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:05,955 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:20:05,955 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 343 of 420 [2022-11-20 12:20:05,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:20:10,765 INFO L130 PetriNetUnfolder]: 1956/14995 cut-off events. [2022-11-20 12:20:10,765 INFO L131 PetriNetUnfolder]: For 11820/12777 co-relation queries the response was YES. [2022-11-20 12:20:11,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31830 conditions, 14995 events. 1956/14995 cut-off events. For 11820/12777 co-relation queries the response was YES. Maximal size of possible extension queue 777. Compared 214520 event pairs, 716 based on Foata normal form. 36/14063 useless extension candidates. Maximal degree in co-relation 31546. Up to 1108 conditions per place. [2022-11-20 12:20:11,124 INFO L137 encePairwiseOnDemand]: 406/420 looper letters, 73 selfloop transitions, 17 changer transitions 0/459 dead transitions. [2022-11-20 12:20:11,124 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 459 transitions, 1993 flow [2022-11-20 12:20:11,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:20:11,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 12:20:11,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3850 transitions. [2022-11-20 12:20:11,129 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2022-11-20 12:20:11,129 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3850 transitions. [2022-11-20 12:20:11,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3850 transitions. [2022-11-20 12:20:11,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:20:11,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3850 transitions. [2022-11-20 12:20:11,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 350.0) internal successors, (3850), 11 states have internal predecessors, (3850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:11,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 420.0) internal successors, (5040), 12 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:11,143 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 420.0) internal successors, (5040), 12 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:11,143 INFO L175 Difference]: Start difference. First operand has 470 places, 433 transitions, 1702 flow. Second operand 11 states and 3850 transitions. [2022-11-20 12:20:11,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 459 transitions, 1993 flow [2022-11-20 12:20:11,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 459 transitions, 1947 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 12:20:11,301 INFO L231 Difference]: Finished difference. Result has 474 places, 431 transitions, 1703 flow [2022-11-20 12:20:11,301 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=1669, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1703, PETRI_PLACES=474, PETRI_TRANSITIONS=431} [2022-11-20 12:20:11,302 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 100 predicate places. [2022-11-20 12:20:11,302 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 431 transitions, 1703 flow [2022-11-20 12:20:11,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 346.625) internal successors, (2773), 8 states have internal predecessors, (2773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:11,303 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:20:11,303 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:20:11,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-20 12:20:11,304 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-20 12:20:11,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:11,304 INFO L85 PathProgramCache]: Analyzing trace with hash -711693050, now seen corresponding path program 1 times [2022-11-20 12:20:11,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:20:11,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58337123] [2022-11-20 12:20:11,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:11,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:20:11,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:11,674 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 12:20:11,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:20:11,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58337123] [2022-11-20 12:20:11,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58337123] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:20:11,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:20:11,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:20:11,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109703024] [2022-11-20 12:20:11,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:20:11,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:20:11,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:20:11,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:20:11,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:20:11,678 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 343 out of 420 [2022-11-20 12:20:11,680 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 431 transitions, 1703 flow. Second operand has 8 states, 8 states have (on average 346.75) internal successors, (2774), 8 states have internal predecessors, (2774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:11,680 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:20:11,680 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 343 of 420 [2022-11-20 12:20:11,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:20:14,805 INFO L130 PetriNetUnfolder]: 1632/10317 cut-off events. [2022-11-20 12:20:14,805 INFO L131 PetriNetUnfolder]: For 7389/8209 co-relation queries the response was YES. [2022-11-20 12:20:14,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21597 conditions, 10317 events. 1632/10317 cut-off events. For 7389/8209 co-relation queries the response was YES. Maximal size of possible extension queue 655. Compared 135916 event pairs, 482 based on Foata normal form. 36/9511 useless extension candidates. Maximal degree in co-relation 21314. Up to 744 conditions per place. [2022-11-20 12:20:15,023 INFO L137 encePairwiseOnDemand]: 406/420 looper letters, 74 selfloop transitions, 17 changer transitions 0/460 dead transitions. [2022-11-20 12:20:15,023 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 460 transitions, 1990 flow [2022-11-20 12:20:15,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:20:15,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 12:20:15,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3851 transitions. [2022-11-20 12:20:15,027 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8335497835497836 [2022-11-20 12:20:15,027 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3851 transitions. [2022-11-20 12:20:15,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3851 transitions. [2022-11-20 12:20:15,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:20:15,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3851 transitions. [2022-11-20 12:20:15,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 350.09090909090907) internal successors, (3851), 11 states have internal predecessors, (3851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:15,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 420.0) internal successors, (5040), 12 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:15,034 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 420.0) internal successors, (5040), 12 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:15,034 INFO L175 Difference]: Start difference. First operand has 474 places, 431 transitions, 1703 flow. Second operand 11 states and 3851 transitions. [2022-11-20 12:20:15,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 460 transitions, 1990 flow [2022-11-20 12:20:15,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 460 transitions, 1944 flow, removed 1 selfloop flow, removed 10 redundant places. [2022-11-20 12:20:15,094 INFO L231 Difference]: Finished difference. Result has 473 places, 430 transitions, 1689 flow [2022-11-20 12:20:15,095 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=1655, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1689, PETRI_PLACES=473, PETRI_TRANSITIONS=430} [2022-11-20 12:20:15,096 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 99 predicate places. [2022-11-20 12:20:15,096 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 430 transitions, 1689 flow [2022-11-20 12:20:15,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 346.75) internal successors, (2774), 8 states have internal predecessors, (2774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:15,096 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:20:15,097 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:20:15,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-20 12:20:15,097 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting thread3Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-20 12:20:15,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:15,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1753844957, now seen corresponding path program 1 times [2022-11-20 12:20:15,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:20:15,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736086953] [2022-11-20 12:20:15,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:15,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:20:15,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:15,217 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 12:20:15,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:20:15,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736086953] [2022-11-20 12:20:15,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736086953] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:20:15,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:20:15,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:20:15,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365259642] [2022-11-20 12:20:15,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:20:15,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:20:15,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:20:15,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:20:15,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:20:15,221 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 343 out of 420 [2022-11-20 12:20:15,223 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 430 transitions, 1689 flow. Second operand has 8 states, 8 states have (on average 346.75) internal successors, (2774), 8 states have internal predecessors, (2774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:15,223 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:20:15,223 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 343 of 420 [2022-11-20 12:20:15,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:20:18,492 INFO L130 PetriNetUnfolder]: 2310/7464 cut-off events. [2022-11-20 12:20:18,492 INFO L131 PetriNetUnfolder]: For 8560/12799 co-relation queries the response was YES. [2022-11-20 12:20:18,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16713 conditions, 7464 events. 2310/7464 cut-off events. For 8560/12799 co-relation queries the response was YES. Maximal size of possible extension queue 767. Compared 88351 event pairs, 993 based on Foata normal form. 56/6123 useless extension candidates. Maximal degree in co-relation 16432. Up to 1031 conditions per place. [2022-11-20 12:20:18,698 INFO L137 encePairwiseOnDemand]: 406/420 looper letters, 73 selfloop transitions, 17 changer transitions 0/456 dead transitions. [2022-11-20 12:20:18,698 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 456 transitions, 1973 flow [2022-11-20 12:20:18,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:20:18,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 12:20:18,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3850 transitions. [2022-11-20 12:20:18,701 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2022-11-20 12:20:18,701 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3850 transitions. [2022-11-20 12:20:18,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3850 transitions. [2022-11-20 12:20:18,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:20:18,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3850 transitions. [2022-11-20 12:20:18,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 350.0) internal successors, (3850), 11 states have internal predecessors, (3850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:18,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 420.0) internal successors, (5040), 12 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:18,707 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 420.0) internal successors, (5040), 12 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:18,707 INFO L175 Difference]: Start difference. First operand has 473 places, 430 transitions, 1689 flow. Second operand 11 states and 3850 transitions. [2022-11-20 12:20:18,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 456 transitions, 1973 flow [2022-11-20 12:20:18,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 456 transitions, 1901 flow, removed 1 selfloop flow, removed 10 redundant places. [2022-11-20 12:20:18,740 INFO L231 Difference]: Finished difference. Result has 472 places, 428 transitions, 1664 flow [2022-11-20 12:20:18,741 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=1630, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1664, PETRI_PLACES=472, PETRI_TRANSITIONS=428} [2022-11-20 12:20:18,741 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 98 predicate places. [2022-11-20 12:20:18,742 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 428 transitions, 1664 flow [2022-11-20 12:20:18,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 346.75) internal successors, (2774), 8 states have internal predecessors, (2774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:18,742 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:20:18,743 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:20:18,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-11-20 12:20:18,743 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting thread3Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-20 12:20:18,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:18,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1465382456, now seen corresponding path program 1 times [2022-11-20 12:20:18,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:20:18,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311532434] [2022-11-20 12:20:18,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:18,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:20:18,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:18,878 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 12:20:18,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:20:18,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311532434] [2022-11-20 12:20:18,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311532434] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:20:18,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:20:18,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:20:18,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973390299] [2022-11-20 12:20:18,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:20:18,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:20:18,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:20:18,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:20:18,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:20:18,883 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 343 out of 420 [2022-11-20 12:20:18,885 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 428 transitions, 1664 flow. Second operand has 8 states, 8 states have (on average 346.875) internal successors, (2775), 8 states have internal predecessors, (2775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:18,885 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:20:18,885 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 343 of 420 [2022-11-20 12:20:18,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:20:21,629 INFO L130 PetriNetUnfolder]: 1980/7165 cut-off events. [2022-11-20 12:20:21,629 INFO L131 PetriNetUnfolder]: For 6224/7877 co-relation queries the response was YES. [2022-11-20 12:20:21,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15891 conditions, 7165 events. 1980/7165 cut-off events. For 6224/7877 co-relation queries the response was YES. Maximal size of possible extension queue 655. Compared 85271 event pairs, 573 based on Foata normal form. 56/6034 useless extension candidates. Maximal degree in co-relation 15612. Up to 1031 conditions per place. [2022-11-20 12:20:21,718 INFO L137 encePairwiseOnDemand]: 406/420 looper letters, 0 selfloop transitions, 0 changer transitions 457/457 dead transitions. [2022-11-20 12:20:21,718 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 457 transitions, 1944 flow [2022-11-20 12:20:21,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:20:21,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 12:20:21,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3851 transitions. [2022-11-20 12:20:21,721 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8335497835497836 [2022-11-20 12:20:21,721 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3851 transitions. [2022-11-20 12:20:21,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3851 transitions. [2022-11-20 12:20:21,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:20:21,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3851 transitions. [2022-11-20 12:20:21,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 350.09090909090907) internal successors, (3851), 11 states have internal predecessors, (3851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:21,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 420.0) internal successors, (5040), 12 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:21,730 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 420.0) internal successors, (5040), 12 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:21,730 INFO L175 Difference]: Start difference. First operand has 472 places, 428 transitions, 1664 flow. Second operand 11 states and 3851 transitions. [2022-11-20 12:20:21,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 457 transitions, 1944 flow [2022-11-20 12:20:21,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 457 transitions, 1898 flow, removed 1 selfloop flow, removed 10 redundant places. [2022-11-20 12:20:21,770 INFO L231 Difference]: Finished difference. Result has 471 places, 0 transitions, 0 flow [2022-11-20 12:20:21,771 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=1616, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=471, PETRI_TRANSITIONS=0} [2022-11-20 12:20:21,771 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 97 predicate places. [2022-11-20 12:20:21,771 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 0 transitions, 0 flow [2022-11-20 12:20:21,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 346.875) internal successors, (2775), 8 states have internal predecessors, (2775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:21,774 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (74 of 75 remaining) [2022-11-20 12:20:21,774 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (73 of 75 remaining) [2022-11-20 12:20:21,774 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (72 of 75 remaining) [2022-11-20 12:20:21,775 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (71 of 75 remaining) [2022-11-20 12:20:21,775 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (70 of 75 remaining) [2022-11-20 12:20:21,775 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (69 of 75 remaining) [2022-11-20 12:20:21,775 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (68 of 75 remaining) [2022-11-20 12:20:21,776 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (67 of 75 remaining) [2022-11-20 12:20:21,776 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (66 of 75 remaining) [2022-11-20 12:20:21,776 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (65 of 75 remaining) [2022-11-20 12:20:21,776 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (64 of 75 remaining) [2022-11-20 12:20:21,776 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (63 of 75 remaining) [2022-11-20 12:20:21,777 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (62 of 75 remaining) [2022-11-20 12:20:21,777 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (61 of 75 remaining) [2022-11-20 12:20:21,777 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (60 of 75 remaining) [2022-11-20 12:20:21,777 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (59 of 75 remaining) [2022-11-20 12:20:21,778 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (58 of 75 remaining) [2022-11-20 12:20:21,778 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (57 of 75 remaining) [2022-11-20 12:20:21,778 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (56 of 75 remaining) [2022-11-20 12:20:21,778 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (55 of 75 remaining) [2022-11-20 12:20:21,778 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (54 of 75 remaining) [2022-11-20 12:20:21,779 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (53 of 75 remaining) [2022-11-20 12:20:21,779 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (52 of 75 remaining) [2022-11-20 12:20:21,779 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (51 of 75 remaining) [2022-11-20 12:20:21,779 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (50 of 75 remaining) [2022-11-20 12:20:21,780 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (49 of 75 remaining) [2022-11-20 12:20:21,780 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (48 of 75 remaining) [2022-11-20 12:20:21,780 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (47 of 75 remaining) [2022-11-20 12:20:21,780 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (46 of 75 remaining) [2022-11-20 12:20:21,780 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (45 of 75 remaining) [2022-11-20 12:20:21,781 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (44 of 75 remaining) [2022-11-20 12:20:21,781 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (43 of 75 remaining) [2022-11-20 12:20:21,781 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (42 of 75 remaining) [2022-11-20 12:20:21,781 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 75 remaining) [2022-11-20 12:20:21,781 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 75 remaining) [2022-11-20 12:20:21,781 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 75 remaining) [2022-11-20 12:20:21,782 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (38 of 75 remaining) [2022-11-20 12:20:21,782 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (37 of 75 remaining) [2022-11-20 12:20:21,782 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (36 of 75 remaining) [2022-11-20 12:20:21,782 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 75 remaining) [2022-11-20 12:20:21,782 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 75 remaining) [2022-11-20 12:20:21,783 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 75 remaining) [2022-11-20 12:20:21,783 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 75 remaining) [2022-11-20 12:20:21,783 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 75 remaining) [2022-11-20 12:20:21,783 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 75 remaining) [2022-11-20 12:20:21,783 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 75 remaining) [2022-11-20 12:20:21,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 75 remaining) [2022-11-20 12:20:21,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 75 remaining) [2022-11-20 12:20:21,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 75 remaining) [2022-11-20 12:20:21,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 75 remaining) [2022-11-20 12:20:21,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 75 remaining) [2022-11-20 12:20:21,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 75 remaining) [2022-11-20 12:20:21,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 75 remaining) [2022-11-20 12:20:21,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 75 remaining) [2022-11-20 12:20:21,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 75 remaining) [2022-11-20 12:20:21,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 75 remaining) [2022-11-20 12:20:21,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 75 remaining) [2022-11-20 12:20:21,786 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 75 remaining) [2022-11-20 12:20:21,786 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 75 remaining) [2022-11-20 12:20:21,786 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 75 remaining) [2022-11-20 12:20:21,786 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 75 remaining) [2022-11-20 12:20:21,786 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 75 remaining) [2022-11-20 12:20:21,787 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 75 remaining) [2022-11-20 12:20:21,787 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 75 remaining) [2022-11-20 12:20:21,787 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 75 remaining) [2022-11-20 12:20:21,787 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 75 remaining) [2022-11-20 12:20:21,787 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 75 remaining) [2022-11-20 12:20:21,787 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 75 remaining) [2022-11-20 12:20:21,788 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 75 remaining) [2022-11-20 12:20:21,788 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 75 remaining) [2022-11-20 12:20:21,788 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 75 remaining) [2022-11-20 12:20:21,788 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 75 remaining) [2022-11-20 12:20:21,788 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 75 remaining) [2022-11-20 12:20:21,789 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 75 remaining) [2022-11-20 12:20:21,789 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 75 remaining) [2022-11-20 12:20:21,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-20 12:20:21,789 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:20:21,795 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-20 12:20:21,796 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 12:20:21,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 12:20:21 BasicIcfg [2022-11-20 12:20:21,801 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 12:20:21,801 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 12:20:21,801 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 12:20:21,802 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 12:20:21,802 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:19:08" (3/4) ... [2022-11-20 12:20:21,805 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 12:20:21,811 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-20 12:20:21,811 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-20 12:20:21,811 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-20 12:20:21,816 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-11-20 12:20:21,816 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-20 12:20:21,816 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 12:20:21,816 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 12:20:21,853 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9f750a-8882-4ab6-8c3a-444fc06ca611/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 12:20:21,853 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 12:20:21,854 INFO L158 Benchmark]: Toolchain (without parser) took 74657.49ms. Allocated memory was 138.4MB in the beginning and 11.8GB in the end (delta: 11.6GB). Free memory was 74.9MB in the beginning and 9.8GB in the end (delta: -9.7GB). Peak memory consumption was 1.9GB. Max. memory is 16.1GB. [2022-11-20 12:20:21,854 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 138.4MB. Free memory is still 107.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:20:21,854 INFO L158 Benchmark]: CACSL2BoogieTranslator took 336.80ms. Allocated memory was 138.4MB in the beginning and 184.5MB in the end (delta: 46.1MB). Free memory was 74.7MB in the beginning and 151.7MB in the end (delta: -77.0MB). Peak memory consumption was 11.8MB. Max. memory is 16.1GB. [2022-11-20 12:20:21,854 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.02ms. Allocated memory is still 184.5MB. Free memory was 151.7MB in the beginning and 148.8MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 12:20:21,855 INFO L158 Benchmark]: Boogie Preprocessor took 37.23ms. Allocated memory is still 184.5MB. Free memory was 148.8MB in the beginning and 146.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:20:21,855 INFO L158 Benchmark]: RCFGBuilder took 1020.53ms. Allocated memory is still 184.5MB. Free memory was 146.7MB in the beginning and 118.6MB in the end (delta: 28.1MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-11-20 12:20:21,856 INFO L158 Benchmark]: TraceAbstraction took 73149.24ms. Allocated memory was 184.5MB in the beginning and 11.8GB in the end (delta: 11.6GB). Free memory was 118.2MB in the beginning and 9.8GB in the end (delta: -9.7GB). Peak memory consumption was 2.2GB. Max. memory is 16.1GB. [2022-11-20 12:20:21,856 INFO L158 Benchmark]: Witness Printer took 51.70ms. Allocated memory is still 11.8GB. Free memory was 9.8GB in the beginning and 9.8GB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 12:20:21,858 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 138.4MB. Free memory is still 107.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 336.80ms. Allocated memory was 138.4MB in the beginning and 184.5MB in the end (delta: 46.1MB). Free memory was 74.7MB in the beginning and 151.7MB in the end (delta: -77.0MB). Peak memory consumption was 11.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.02ms. Allocated memory is still 184.5MB. Free memory was 151.7MB in the beginning and 148.8MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.23ms. Allocated memory is still 184.5MB. Free memory was 148.8MB in the beginning and 146.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1020.53ms. Allocated memory is still 184.5MB. Free memory was 146.7MB in the beginning and 118.6MB in the end (delta: 28.1MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 73149.24ms. Allocated memory was 184.5MB in the beginning and 11.8GB in the end (delta: 11.6GB). Free memory was 118.2MB in the beginning and 9.8GB in the end (delta: -9.7GB). Peak memory consumption was 2.2GB. Max. memory is 16.1GB. * Witness Printer took 51.70ms. Allocated memory is still 11.8GB. Free memory was 9.8GB in the beginning and 9.8GB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: 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, 686 locations, 75 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: 72.9s, OverallIterations: 39, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 67.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3522 SdHoareTripleChecker+Valid, 4.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3522 mSDsluCounter, 2744 SdHoareTripleChecker+Invalid, 3.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1592 mSDsCounter, 276 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5198 IncrementalHoareTripleChecker+Invalid, 5474 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 276 mSolverCounterUnsat, 1152 mSDtfsCounter, 5198 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 354 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 315 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1744occurred in iteration=32, InterpolantAutomatonStates: 291, 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, 4.1s InterpolantComputationTime, 3672 NumberOfCodeBlocks, 3672 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 3633 ConstructedInterpolants, 0 QuantifiedInterpolants, 8793 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 39 InterpolantComputations, 39 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 36 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-20 12:20:21,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9f750a-8882-4ab6-8c3a-444fc06ca611/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