./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-word-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f56b4bb-b8bc-42b3-acc0-6129d980c274/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f56b4bb-b8bc-42b3-acc0-6129d980c274/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f56b4bb-b8bc-42b3-acc0-6129d980c274/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f56b4bb-b8bc-42b3-acc0-6129d980c274/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-word-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f56b4bb-b8bc-42b3-acc0-6129d980c274/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f56b4bb-b8bc-42b3-acc0-6129d980c274/bin/uautomizer-uyxdKDjOR8 --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 73462fb8dbdc39f07edabdd79150cbad579fbba379eb033cd2e89802bbb8b9a6 --- 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-2329fc7 [2022-12-13 19:18:42,371 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 19:18:42,373 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 19:18:42,386 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 19:18:42,386 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 19:18:42,387 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 19:18:42,388 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 19:18:42,389 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 19:18:42,390 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 19:18:42,391 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 19:18:42,392 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 19:18:42,393 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 19:18:42,393 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 19:18:42,394 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 19:18:42,394 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 19:18:42,395 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 19:18:42,396 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 19:18:42,397 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 19:18:42,398 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 19:18:42,400 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 19:18:42,401 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 19:18:42,402 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 19:18:42,403 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 19:18:42,403 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 19:18:42,406 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 19:18:42,406 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 19:18:42,406 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 19:18:42,407 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 19:18:42,407 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 19:18:42,408 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 19:18:42,408 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 19:18:42,409 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 19:18:42,409 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 19:18:42,410 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 19:18:42,411 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 19:18:42,411 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 19:18:42,411 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 19:18:42,412 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 19:18:42,412 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 19:18:42,412 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 19:18:42,413 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 19:18:42,414 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f56b4bb-b8bc-42b3-acc0-6129d980c274/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 19:18:42,429 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 19:18:42,429 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 19:18:42,429 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 19:18:42,429 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 19:18:42,430 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 19:18:42,430 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 19:18:42,430 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 19:18:42,430 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 19:18:42,431 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 19:18:42,431 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 19:18:42,431 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 19:18:42,431 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 19:18:42,431 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 19:18:42,431 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 19:18:42,431 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 19:18:42,431 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 19:18:42,432 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 19:18:42,432 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 19:18:42,432 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 19:18:42,432 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 19:18:42,432 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 19:18:42,432 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 19:18:42,432 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 19:18:42,432 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 19:18:42,433 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 19:18:42,433 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 19:18:42,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:18:42,433 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 19:18:42,433 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 19:18:42,433 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 19:18:42,433 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 19:18:42,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 19:18:42,434 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 19:18:42,434 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 19:18:42,434 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 19:18:42,434 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 19:18:42,434 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 19:18:42,434 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_2f56b4bb-b8bc-42b3-acc0-6129d980c274/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f56b4bb-b8bc-42b3-acc0-6129d980c274/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73462fb8dbdc39f07edabdd79150cbad579fbba379eb033cd2e89802bbb8b9a6 [2022-12-13 19:18:42,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 19:18:42,610 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 19:18:42,612 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 19:18:42,613 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 19:18:42,613 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 19:18:42,614 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f56b4bb-b8bc-42b3-acc0-6129d980c274/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2022-12-13 19:18:45,307 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 19:18:45,477 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 19:18:45,478 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f56b4bb-b8bc-42b3-acc0-6129d980c274/sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2022-12-13 19:18:45,482 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f56b4bb-b8bc-42b3-acc0-6129d980c274/bin/uautomizer-uyxdKDjOR8/data/bb6b34af1/0495c72d9022413f97d8531343229d58/FLAG45b407c63 [2022-12-13 19:18:45,493 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f56b4bb-b8bc-42b3-acc0-6129d980c274/bin/uautomizer-uyxdKDjOR8/data/bb6b34af1/0495c72d9022413f97d8531343229d58 [2022-12-13 19:18:45,495 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 19:18:45,496 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 19:18:45,497 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 19:18:45,497 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 19:18:45,500 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 19:18:45,500 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:18:45" (1/1) ... [2022-12-13 19:18:45,501 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44a0415d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:18:45, skipping insertion in model container [2022-12-13 19:18:45,501 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:18:45" (1/1) ... [2022-12-13 19:18:45,507 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 19:18:45,519 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 19:18:45,652 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_2f56b4bb-b8bc-42b3-acc0-6129d980c274/sv-benchmarks/c/weaver/chl-word-trans.wvr.c[3292,3305] [2022-12-13 19:18:45,657 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:18:45,667 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 19:18:45,691 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_2f56b4bb-b8bc-42b3-acc0-6129d980c274/sv-benchmarks/c/weaver/chl-word-trans.wvr.c[3292,3305] [2022-12-13 19:18:45,695 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:18:45,709 INFO L208 MainTranslator]: Completed translation [2022-12-13 19:18:45,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:18:45 WrapperNode [2022-12-13 19:18:45,709 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 19:18:45,710 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 19:18:45,711 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 19:18:45,711 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 19:18:45,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:18:45" (1/1) ... [2022-12-13 19:18:45,723 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:18:45" (1/1) ... [2022-12-13 19:18:45,747 INFO L138 Inliner]: procedures = 25, calls = 44, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 178 [2022-12-13 19:18:45,747 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 19:18:45,748 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 19:18:45,748 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 19:18:45,748 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 19:18:45,755 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:18:45" (1/1) ... [2022-12-13 19:18:45,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:18:45" (1/1) ... [2022-12-13 19:18:45,759 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:18:45" (1/1) ... [2022-12-13 19:18:45,759 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:18:45" (1/1) ... [2022-12-13 19:18:45,768 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:18:45" (1/1) ... [2022-12-13 19:18:45,772 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:18:45" (1/1) ... [2022-12-13 19:18:45,775 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:18:45" (1/1) ... [2022-12-13 19:18:45,776 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:18:45" (1/1) ... [2022-12-13 19:18:45,780 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 19:18:45,781 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 19:18:45,781 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 19:18:45,781 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 19:18:45,782 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:18:45" (1/1) ... [2022-12-13 19:18:45,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:18:45,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f56b4bb-b8bc-42b3-acc0-6129d980c274/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:18:45,807 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f56b4bb-b8bc-42b3-acc0-6129d980c274/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 19:18:45,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f56b4bb-b8bc-42b3-acc0-6129d980c274/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 19:18:45,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 19:18:45,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 19:18:45,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 19:18:45,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 19:18:45,842 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 19:18:45,842 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 19:18:45,842 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 19:18:45,842 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 19:18:45,842 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 19:18:45,842 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 19:18:45,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 19:18:45,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 19:18:45,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 19:18:45,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 19:18:45,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 19:18:45,844 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 19:18:45,942 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 19:18:45,943 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 19:18:46,287 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 19:18:46,301 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 19:18:46,301 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-12-13 19:18:46,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:18:46 BoogieIcfgContainer [2022-12-13 19:18:46,304 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 19:18:46,307 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 19:18:46,307 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 19:18:46,310 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 19:18:46,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 07:18:45" (1/3) ... [2022-12-13 19:18:46,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cd6dfe9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:18:46, skipping insertion in model container [2022-12-13 19:18:46,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:18:45" (2/3) ... [2022-12-13 19:18:46,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cd6dfe9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:18:46, skipping insertion in model container [2022-12-13 19:18:46,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:18:46" (3/3) ... [2022-12-13 19:18:46,313 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-trans.wvr.c [2022-12-13 19:18:46,321 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 19:18:46,329 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 19:18:46,329 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-12-13 19:18:46,329 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 19:18:46,413 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 19:18:46,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 319 places, 337 transitions, 698 flow [2022-12-13 19:18:46,518 INFO L130 PetriNetUnfolder]: 28/334 cut-off events. [2022-12-13 19:18:46,518 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 19:18:46,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 347 conditions, 334 events. 28/334 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 543 event pairs, 0 based on Foata normal form. 0/288 useless extension candidates. Maximal degree in co-relation 269. Up to 3 conditions per place. [2022-12-13 19:18:46,523 INFO L82 GeneralOperation]: Start removeDead. Operand has 319 places, 337 transitions, 698 flow [2022-12-13 19:18:46,528 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 296 places, 313 transitions, 641 flow [2022-12-13 19:18:46,531 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 19:18:46,538 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 296 places, 313 transitions, 641 flow [2022-12-13 19:18:46,540 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 296 places, 313 transitions, 641 flow [2022-12-13 19:18:46,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 296 places, 313 transitions, 641 flow [2022-12-13 19:18:46,602 INFO L130 PetriNetUnfolder]: 27/313 cut-off events. [2022-12-13 19:18:46,602 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 19:18:46,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 313 events. 27/313 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 538 event pairs, 0 based on Foata normal form. 0/268 useless extension candidates. Maximal degree in co-relation 269. Up to 3 conditions per place. [2022-12-13 19:18:46,609 INFO L119 LiptonReduction]: Number of co-enabled transitions 11400 [2022-12-13 19:18:54,140 INFO L134 LiptonReduction]: Checked pairs total: 16010 [2022-12-13 19:18:54,140 INFO L136 LiptonReduction]: Total number of compositions: 338 [2022-12-13 19:18:54,152 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 19:18:54,158 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;@24fc022e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 19:18:54,158 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2022-12-13 19:18:54,160 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-12-13 19:18:54,161 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 19:18:54,161 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:18:54,161 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 19:18:54,162 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-12-13 19:18:54,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:18:54,166 INFO L85 PathProgramCache]: Analyzing trace with hash 40831, now seen corresponding path program 1 times [2022-12-13 19:18:54,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:18:54,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434806237] [2022-12-13 19:18:54,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:18:54,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:18:54,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:18:54,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:18:54,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:18:54,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434806237] [2022-12-13 19:18:54,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434806237] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:18:54,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:18:54,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:18:54,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815374022] [2022-12-13 19:18:54,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:18:54,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:18:54,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:18:54,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:18:54,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:18:54,481 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 675 [2022-12-13 19:18:54,483 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 57 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 308.6666666666667) internal successors, (926), 3 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:18:54,484 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:18:54,484 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 675 [2022-12-13 19:18:54,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:18:55,867 INFO L130 PetriNetUnfolder]: 12137/16403 cut-off events. [2022-12-13 19:18:55,868 INFO L131 PetriNetUnfolder]: For 634/634 co-relation queries the response was YES. [2022-12-13 19:18:55,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33511 conditions, 16403 events. 12137/16403 cut-off events. For 634/634 co-relation queries the response was YES. Maximal size of possible extension queue 824. Compared 83593 event pairs, 8860 based on Foata normal form. 0/8047 useless extension candidates. Maximal degree in co-relation 15562. Up to 8206 conditions per place. [2022-12-13 19:18:55,938 INFO L137 encePairwiseOnDemand]: 663/675 looper letters, 101 selfloop transitions, 6 changer transitions 0/107 dead transitions. [2022-12-13 19:18:55,938 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 107 transitions, 458 flow [2022-12-13 19:18:55,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:18:55,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:18:55,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1037 transitions. [2022-12-13 19:18:55,954 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5120987654320988 [2022-12-13 19:18:55,954 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1037 transitions. [2022-12-13 19:18:55,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1037 transitions. [2022-12-13 19:18:55,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:18:55,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1037 transitions. [2022-12-13 19:18:55,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 345.6666666666667) internal successors, (1037), 3 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:18:55,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 675.0) internal successors, (2700), 4 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:18:55,971 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 675.0) internal successors, (2700), 4 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:18:55,973 INFO L175 Difference]: Start difference. First operand has 56 places, 57 transitions, 129 flow. Second operand 3 states and 1037 transitions. [2022-12-13 19:18:55,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 107 transitions, 458 flow [2022-12-13 19:18:55,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 107 transitions, 440 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-12-13 19:18:55,984 INFO L231 Difference]: Finished difference. Result has 55 places, 62 transitions, 176 flow [2022-12-13 19:18:55,985 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=675, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=55, PETRI_TRANSITIONS=62} [2022-12-13 19:18:55,988 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2022-12-13 19:18:55,988 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 62 transitions, 176 flow [2022-12-13 19:18:55,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 308.6666666666667) internal successors, (926), 3 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:18:55,989 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:18:55,989 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 19:18:55,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 19:18:55,990 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-12-13 19:18:55,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:18:55,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1268669, now seen corresponding path program 1 times [2022-12-13 19:18:55,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:18:55,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480112584] [2022-12-13 19:18:55,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:18:55,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:18:56,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:18:56,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:18:56,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:18:56,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480112584] [2022-12-13 19:18:56,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480112584] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:18:56,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439238100] [2022-12-13 19:18:56,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:18:56,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:18:56,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f56b4bb-b8bc-42b3-acc0-6129d980c274/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:18:56,082 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f56b4bb-b8bc-42b3-acc0-6129d980c274/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:18:56,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f56b4bb-b8bc-42b3-acc0-6129d980c274/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 19:18:56,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:18:56,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 19:18:56,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:18:56,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:18:56,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:18:56,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:18:56,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439238100] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:18:56,197 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:18:56,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-12-13 19:18:56,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672380830] [2022-12-13 19:18:56,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:18:56,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:18:56,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:18:56,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:18:56,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:18:56,276 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 675 [2022-12-13 19:18:56,279 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 62 transitions, 176 flow. Second operand has 7 states, 7 states have (on average 309.14285714285717) internal successors, (2164), 7 states have internal predecessors, (2164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:18:56,279 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:18:56,279 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 675 [2022-12-13 19:18:56,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:18:58,911 INFO L130 PetriNetUnfolder]: 30350/41006 cut-off events. [2022-12-13 19:18:58,911 INFO L131 PetriNetUnfolder]: For 335/335 co-relation queries the response was YES. [2022-12-13 19:18:58,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83339 conditions, 41006 events. 30350/41006 cut-off events. For 335/335 co-relation queries the response was YES. Maximal size of possible extension queue 1835. Compared 232839 event pairs, 22150 based on Foata normal form. 0/20131 useless extension candidates. Maximal degree in co-relation 66587. Up to 8204 conditions per place. [2022-12-13 19:18:59,122 INFO L137 encePairwiseOnDemand]: 663/675 looper letters, 233 selfloop transitions, 33 changer transitions 0/266 dead transitions. [2022-12-13 19:18:59,122 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 266 transitions, 1200 flow [2022-12-13 19:18:59,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 19:18:59,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 19:18:59,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2431 transitions. [2022-12-13 19:18:59,130 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5144973544973545 [2022-12-13 19:18:59,130 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2431 transitions. [2022-12-13 19:18:59,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2431 transitions. [2022-12-13 19:18:59,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:18:59,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2431 transitions. [2022-12-13 19:18:59,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 347.2857142857143) internal successors, (2431), 7 states have internal predecessors, (2431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:18:59,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 675.0) internal successors, (5400), 8 states have internal predecessors, (5400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:18:59,147 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 675.0) internal successors, (5400), 8 states have internal predecessors, (5400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:18:59,147 INFO L175 Difference]: Start difference. First operand has 55 places, 62 transitions, 176 flow. Second operand 7 states and 2431 transitions. [2022-12-13 19:18:59,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 266 transitions, 1200 flow [2022-12-13 19:18:59,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 266 transitions, 1176 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 19:18:59,153 INFO L231 Difference]: Finished difference. Result has 62 places, 86 transitions, 383 flow [2022-12-13 19:18:59,153 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=675, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=383, PETRI_PLACES=62, PETRI_TRANSITIONS=86} [2022-12-13 19:18:59,153 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 6 predicate places. [2022-12-13 19:18:59,153 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 86 transitions, 383 flow [2022-12-13 19:18:59,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 309.14285714285717) internal successors, (2164), 7 states have internal predecessors, (2164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:18:59,154 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:18:59,154 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2022-12-13 19:18:59,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f56b4bb-b8bc-42b3-acc0-6129d980c274/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 19:18:59,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f56b4bb-b8bc-42b3-acc0-6129d980c274/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:18:59,356 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-12-13 19:18:59,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:18:59,356 INFO L85 PathProgramCache]: Analyzing trace with hash 39330975, now seen corresponding path program 1 times [2022-12-13 19:18:59,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:18:59,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415326525] [2022-12-13 19:18:59,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:18:59,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:18:59,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:18:59,488 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:18:59,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:18:59,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415326525] [2022-12-13 19:18:59,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415326525] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:18:59,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905016602] [2022-12-13 19:18:59,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:18:59,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:18:59,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f56b4bb-b8bc-42b3-acc0-6129d980c274/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:18:59,491 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f56b4bb-b8bc-42b3-acc0-6129d980c274/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:18:59,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f56b4bb-b8bc-42b3-acc0-6129d980c274/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 19:18:59,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:18:59,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 19:18:59,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:18:59,560 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:18:59,560 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:18:59,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905016602] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:18:59,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:18:59,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-12-13 19:18:59,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032633795] [2022-12-13 19:18:59,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:18:59,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:18:59,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:18:59,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:18:59,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:18:59,599 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 675 [2022-12-13 19:18:59,603 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 86 transitions, 383 flow. Second operand has 5 states, 5 states have (on average 308.8) internal successors, (1544), 5 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:18:59,603 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:18:59,603 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 675 [2022-12-13 19:18:59,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:19:02,148 INFO L130 PetriNetUnfolder]: 30341/40994 cut-off events. [2022-12-13 19:19:02,149 INFO L131 PetriNetUnfolder]: For 340/340 co-relation queries the response was YES. [2022-12-13 19:19:02,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83342 conditions, 40994 events. 30341/40994 cut-off events. For 340/340 co-relation queries the response was YES. Maximal size of possible extension queue 1835. Compared 232857 event pairs, 22150 based on Foata normal form. 2/20132 useless extension candidates. Maximal degree in co-relation 49977. Up to 24594 conditions per place. [2022-12-13 19:19:02,303 INFO L137 encePairwiseOnDemand]: 666/675 looper letters, 149 selfloop transitions, 15 changer transitions 0/164 dead transitions. [2022-12-13 19:19:02,303 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 164 transitions, 822 flow [2022-12-13 19:19:02,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:19:02,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 19:19:02,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1700 transitions. [2022-12-13 19:19:02,308 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5037037037037037 [2022-12-13 19:19:02,308 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1700 transitions. [2022-12-13 19:19:02,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1700 transitions. [2022-12-13 19:19:02,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:19:02,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1700 transitions. [2022-12-13 19:19:02,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 340.0) internal successors, (1700), 5 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:02,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 675.0) internal successors, (4050), 6 states have internal predecessors, (4050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:02,320 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 675.0) internal successors, (4050), 6 states have internal predecessors, (4050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:02,320 INFO L175 Difference]: Start difference. First operand has 62 places, 86 transitions, 383 flow. Second operand 5 states and 1700 transitions. [2022-12-13 19:19:02,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 164 transitions, 822 flow [2022-12-13 19:19:02,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 164 transitions, 792 flow, removed 9 selfloop flow, removed 1 redundant places. [2022-12-13 19:19:02,324 INFO L231 Difference]: Finished difference. Result has 61 places, 74 transitions, 302 flow [2022-12-13 19:19:02,325 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=675, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=302, PETRI_PLACES=61, PETRI_TRANSITIONS=74} [2022-12-13 19:19:02,325 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 5 predicate places. [2022-12-13 19:19:02,325 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 74 transitions, 302 flow [2022-12-13 19:19:02,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 308.8) internal successors, (1544), 5 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:02,327 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:19:02,327 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-12-13 19:19:02,332 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f56b4bb-b8bc-42b3-acc0-6129d980c274/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 19:19:02,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f56b4bb-b8bc-42b3-acc0-6129d980c274/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:19:02,528 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-12-13 19:19:02,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:19:02,528 INFO L85 PathProgramCache]: Analyzing trace with hash -857546284, now seen corresponding path program 2 times [2022-12-13 19:19:02,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:19:02,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20347174] [2022-12-13 19:19:02,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:19:02,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:19:02,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:19:02,623 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:19:02,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:19:02,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20347174] [2022-12-13 19:19:02,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20347174] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:19:02,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759123341] [2022-12-13 19:19:02,624 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:19:02,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:19:02,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f56b4bb-b8bc-42b3-acc0-6129d980c274/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:19:02,625 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f56b4bb-b8bc-42b3-acc0-6129d980c274/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:19:02,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f56b4bb-b8bc-42b3-acc0-6129d980c274/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 19:19:02,679 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 19:19:02,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:19:02,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 19:19:02,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:19:02,693 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 19:19:02,693 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:19:02,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759123341] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:19:02,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:19:02,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-12-13 19:19:02,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786977017] [2022-12-13 19:19:02,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:19:02,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:19:02,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:19:02,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:19:02,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-13 19:19:02,723 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 675 [2022-12-13 19:19:02,724 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 74 transitions, 302 flow. Second operand has 3 states, 3 states have (on average 312.0) internal successors, (936), 3 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:02,724 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:19:02,724 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 675 [2022-12-13 19:19:02,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:19:05,513 INFO L130 PetriNetUnfolder]: 30341/40993 cut-off events. [2022-12-13 19:19:05,514 INFO L131 PetriNetUnfolder]: For 350/350 co-relation queries the response was YES. [2022-12-13 19:19:05,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83334 conditions, 40993 events. 30341/40993 cut-off events. For 350/350 co-relation queries the response was YES. Maximal size of possible extension queue 1831. Compared 232780 event pairs, 22150 based on Foata normal form. 1/20134 useless extension candidates. Maximal degree in co-relation 66573. Up to 40988 conditions per place. [2022-12-13 19:19:05,632 INFO L137 encePairwiseOnDemand]: 672/675 looper letters, 67 selfloop transitions, 6 changer transitions 0/73 dead transitions. [2022-12-13 19:19:05,632 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 73 transitions, 438 flow [2022-12-13 19:19:05,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:19:05,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:19:05,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 987 transitions. [2022-12-13 19:19:05,634 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4874074074074074 [2022-12-13 19:19:05,634 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 987 transitions. [2022-12-13 19:19:05,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 987 transitions. [2022-12-13 19:19:05,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:19:05,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 987 transitions. [2022-12-13 19:19:05,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 329.0) internal successors, (987), 3 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:05,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 675.0) internal successors, (2700), 4 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:05,639 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 675.0) internal successors, (2700), 4 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:05,639 INFO L175 Difference]: Start difference. First operand has 61 places, 74 transitions, 302 flow. Second operand 3 states and 987 transitions. [2022-12-13 19:19:05,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 73 transitions, 438 flow [2022-12-13 19:19:05,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 73 transitions, 417 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 19:19:05,640 INFO L231 Difference]: Finished difference. Result has 59 places, 73 transitions, 283 flow [2022-12-13 19:19:05,641 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=675, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=283, PETRI_PLACES=59, PETRI_TRANSITIONS=73} [2022-12-13 19:19:05,641 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2022-12-13 19:19:05,641 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 73 transitions, 283 flow [2022-12-13 19:19:05,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 312.0) internal successors, (936), 3 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:05,642 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:19:05,642 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2022-12-13 19:19:05,647 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f56b4bb-b8bc-42b3-acc0-6129d980c274/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 19:19:05,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f56b4bb-b8bc-42b3-acc0-6129d980c274/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:19:05,843 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-12-13 19:19:05,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:19:05,844 INFO L85 PathProgramCache]: Analyzing trace with hash -632810778, now seen corresponding path program 1 times [2022-12-13 19:19:05,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:19:05,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045929762] [2022-12-13 19:19:05,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:19:05,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:19:05,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:19:05,954 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:19:05,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:19:05,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045929762] [2022-12-13 19:19:05,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045929762] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:19:05,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48189620] [2022-12-13 19:19:05,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:19:05,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:19:05,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f56b4bb-b8bc-42b3-acc0-6129d980c274/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:19:05,956 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f56b4bb-b8bc-42b3-acc0-6129d980c274/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:19:05,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f56b4bb-b8bc-42b3-acc0-6129d980c274/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 19:19:06,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:19:06,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 19:19:06,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:19:06,033 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:19:06,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:19:06,072 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:19:06,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48189620] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:19:06,073 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:19:06,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-12-13 19:19:06,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741595213] [2022-12-13 19:19:06,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:19:06,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 19:19:06,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:19:06,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 19:19:06,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-12-13 19:19:06,173 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 675 [2022-12-13 19:19:06,178 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 73 transitions, 283 flow. Second operand has 13 states, 13 states have (on average 309.15384615384613) internal successors, (4019), 13 states have internal predecessors, (4019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:06,178 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:19:06,178 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 675 [2022-12-13 19:19:06,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:19:11,746 INFO L130 PetriNetUnfolder]: 66749/90181 cut-off events. [2022-12-13 19:19:11,746 INFO L131 PetriNetUnfolder]: For 794/794 co-relation queries the response was YES. [2022-12-13 19:19:11,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183282 conditions, 90181 events. 66749/90181 cut-off events. For 794/794 co-relation queries the response was YES. Maximal size of possible extension queue 2445. Compared 538778 event pairs, 48730 based on Foata normal form. 12/44301 useless extension candidates. Maximal degree in co-relation 183178. Up to 9317 conditions per place. [2022-12-13 19:19:12,104 INFO L137 encePairwiseOnDemand]: 667/675 looper letters, 502 selfloop transitions, 51 changer transitions 0/553 dead transitions. [2022-12-13 19:19:12,104 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 553 transitions, 2541 flow [2022-12-13 19:19:12,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 19:19:12,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 19:19:12,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4261 transitions. [2022-12-13 19:19:12,113 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5260493827160494 [2022-12-13 19:19:12,113 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4261 transitions. [2022-12-13 19:19:12,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4261 transitions. [2022-12-13 19:19:12,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:19:12,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4261 transitions. [2022-12-13 19:19:12,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 355.0833333333333) internal successors, (4261), 12 states have internal predecessors, (4261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:12,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 675.0) internal successors, (8775), 13 states have internal predecessors, (8775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:12,136 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 675.0) internal successors, (8775), 13 states have internal predecessors, (8775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:12,136 INFO L175 Difference]: Start difference. First operand has 59 places, 73 transitions, 283 flow. Second operand 12 states and 4261 transitions. [2022-12-13 19:19:12,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 553 transitions, 2541 flow [2022-12-13 19:19:12,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 553 transitions, 2517 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 19:19:12,146 INFO L231 Difference]: Finished difference. Result has 74 places, 103 transitions, 631 flow [2022-12-13 19:19:12,146 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=675, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=631, PETRI_PLACES=74, PETRI_TRANSITIONS=103} [2022-12-13 19:19:12,147 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 18 predicate places. [2022-12-13 19:19:12,147 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 103 transitions, 631 flow [2022-12-13 19:19:12,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 309.15384615384613) internal successors, (4019), 13 states have internal predecessors, (4019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:12,149 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:19:12,149 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:19:12,154 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f56b4bb-b8bc-42b3-acc0-6129d980c274/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 19:19:12,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f56b4bb-b8bc-42b3-acc0-6129d980c274/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:19:12,350 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-12-13 19:19:12,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:19:12,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1706004945, now seen corresponding path program 1 times [2022-12-13 19:19:12,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:19:12,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240086124] [2022-12-13 19:19:12,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:19:12,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:19:12,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:19:12,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:19:12,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:19:12,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240086124] [2022-12-13 19:19:12,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240086124] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:19:12,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:19:12,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:19:12,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427194113] [2022-12-13 19:19:12,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:19:12,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:19:12,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:19:12,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:19:12,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:19:12,411 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 675 [2022-12-13 19:19:12,412 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 103 transitions, 631 flow. Second operand has 3 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:12,412 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:19:12,412 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 675 [2022-12-13 19:19:12,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:19:22,406 INFO L130 PetriNetUnfolder]: 115501/156445 cut-off events. [2022-12-13 19:19:22,406 INFO L131 PetriNetUnfolder]: For 802/802 co-relation queries the response was YES. [2022-12-13 19:19:22,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317924 conditions, 156445 events. 115501/156445 cut-off events. For 802/802 co-relation queries the response was YES. Maximal size of possible extension queue 4261. Compared 1038444 event pairs, 48730 based on Foata normal form. 0/78587 useless extension candidates. Maximal degree in co-relation 260073. Up to 90182 conditions per place. [2022-12-13 19:19:23,155 INFO L137 encePairwiseOnDemand]: 671/675 looper letters, 140 selfloop transitions, 2 changer transitions 0/142 dead transitions. [2022-12-13 19:19:23,156 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 142 transitions, 998 flow [2022-12-13 19:19:23,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:19:23,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:19:23,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1039 transitions. [2022-12-13 19:19:23,158 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5130864197530864 [2022-12-13 19:19:23,158 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1039 transitions. [2022-12-13 19:19:23,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1039 transitions. [2022-12-13 19:19:23,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:19:23,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1039 transitions. [2022-12-13 19:19:23,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 346.3333333333333) internal successors, (1039), 3 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:23,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 675.0) internal successors, (2700), 4 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:23,162 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 675.0) internal successors, (2700), 4 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:23,162 INFO L175 Difference]: Start difference. First operand has 74 places, 103 transitions, 631 flow. Second operand 3 states and 1039 transitions. [2022-12-13 19:19:23,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 142 transitions, 998 flow [2022-12-13 19:19:23,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 142 transitions, 854 flow, removed 39 selfloop flow, removed 5 redundant places. [2022-12-13 19:19:23,165 INFO L231 Difference]: Finished difference. Result has 72 places, 104 transitions, 501 flow [2022-12-13 19:19:23,165 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=675, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=501, PETRI_PLACES=72, PETRI_TRANSITIONS=104} [2022-12-13 19:19:23,166 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 16 predicate places. [2022-12-13 19:19:23,166 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 104 transitions, 501 flow [2022-12-13 19:19:23,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:23,166 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:19:23,166 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:19:23,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 19:19:23,166 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-12-13 19:19:23,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:19:23,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1706004648, now seen corresponding path program 1 times [2022-12-13 19:19:23,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:19:23,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544357443] [2022-12-13 19:19:23,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:19:23,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:19:23,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:19:23,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:19:23,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:19:23,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544357443] [2022-12-13 19:19:23,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544357443] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:19:23,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:19:23,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:19:23,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013512565] [2022-12-13 19:19:23,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:19:23,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:19:23,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:19:23,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:19:23,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:19:23,321 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 675 [2022-12-13 19:19:23,322 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 104 transitions, 501 flow. Second operand has 4 states, 4 states have (on average 304.0) internal successors, (1216), 4 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:23,322 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:19:23,322 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 675 [2022-12-13 19:19:23,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:19:40,589 INFO L130 PetriNetUnfolder]: 213566/287611 cut-off events. [2022-12-13 19:19:40,589 INFO L131 PetriNetUnfolder]: For 22410/22410 co-relation queries the response was YES. [2022-12-13 19:19:41,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 607573 conditions, 287611 events. 213566/287611 cut-off events. For 22410/22410 co-relation queries the response was YES. Maximal size of possible extension queue 7121. Compared 1942618 event pairs, 155584 based on Foata normal form. 0/158295 useless extension candidates. Maximal degree in co-relation 497037. Up to 145753 conditions per place. [2022-12-13 19:19:41,892 INFO L137 encePairwiseOnDemand]: 670/675 looper letters, 180 selfloop transitions, 4 changer transitions 0/184 dead transitions. [2022-12-13 19:19:41,892 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 184 transitions, 1225 flow [2022-12-13 19:19:41,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:19:41,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 19:19:41,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1313 transitions. [2022-12-13 19:19:41,895 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4862962962962963 [2022-12-13 19:19:41,895 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1313 transitions. [2022-12-13 19:19:41,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1313 transitions. [2022-12-13 19:19:41,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:19:41,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1313 transitions. [2022-12-13 19:19:41,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 328.25) internal successors, (1313), 4 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:41,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 675.0) internal successors, (3375), 5 states have internal predecessors, (3375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:41,901 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 675.0) internal successors, (3375), 5 states have internal predecessors, (3375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:41,901 INFO L175 Difference]: Start difference. First operand has 72 places, 104 transitions, 501 flow. Second operand 4 states and 1313 transitions. [2022-12-13 19:19:41,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 184 transitions, 1225 flow [2022-12-13 19:19:41,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 184 transitions, 1221 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:19:41,949 INFO L231 Difference]: Finished difference. Result has 76 places, 105 transitions, 518 flow [2022-12-13 19:19:41,949 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=675, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=518, PETRI_PLACES=76, PETRI_TRANSITIONS=105} [2022-12-13 19:19:41,950 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 20 predicate places. [2022-12-13 19:19:41,950 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 105 transitions, 518 flow [2022-12-13 19:19:41,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 304.0) internal successors, (1216), 4 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:41,950 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:19:41,950 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:19:41,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 19:19:41,950 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-12-13 19:19:41,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:19:41,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1363519529, now seen corresponding path program 1 times [2022-12-13 19:19:41,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:19:41,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966392923] [2022-12-13 19:19:41,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:19:41,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:19:41,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:19:42,042 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:19:42,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:19:42,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966392923] [2022-12-13 19:19:42,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966392923] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:19:42,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247137066] [2022-12-13 19:19:42,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:19:42,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:19:42,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f56b4bb-b8bc-42b3-acc0-6129d980c274/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:19:42,044 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f56b4bb-b8bc-42b3-acc0-6129d980c274/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:19:42,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f56b4bb-b8bc-42b3-acc0-6129d980c274/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 19:19:42,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:19:42,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 19:19:42,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:19:42,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:19:42,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:19:42,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:19:42,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247137066] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 19:19:42,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 19:19:42,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 2] total 8 [2022-12-13 19:19:42,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482668265] [2022-12-13 19:19:42,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:19:42,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:19:42,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:19:42,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:19:42,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-12-13 19:19:42,281 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 292 out of 675 [2022-12-13 19:19:42,282 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 105 transitions, 518 flow. Second operand has 4 states, 4 states have (on average 294.25) internal successors, (1177), 4 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:42,282 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:19:42,282 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 292 of 675 [2022-12-13 19:19:42,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:19:59,038 INFO L130 PetriNetUnfolder]: 198980/269109 cut-off events. [2022-12-13 19:19:59,038 INFO L131 PetriNetUnfolder]: For 33696/33696 co-relation queries the response was YES. [2022-12-13 19:19:59,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 570068 conditions, 269109 events. 198980/269109 cut-off events. For 33696/33696 co-relation queries the response was YES. Maximal size of possible extension queue 6743. Compared 1824614 event pairs, 146938 based on Foata normal form. 7832/164741 useless extension candidates. Maximal degree in co-relation 466351. Up to 269109 conditions per place. [2022-12-13 19:20:00,293 INFO L137 encePairwiseOnDemand]: 673/675 looper letters, 102 selfloop transitions, 1 changer transitions 0/103 dead transitions. [2022-12-13 19:20:00,293 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 103 transitions, 714 flow [2022-12-13 19:20:00,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:20:00,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:20:00,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 929 transitions. [2022-12-13 19:20:00,296 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4587654320987654 [2022-12-13 19:20:00,296 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 929 transitions. [2022-12-13 19:20:00,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 929 transitions. [2022-12-13 19:20:00,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:20:00,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 929 transitions. [2022-12-13 19:20:00,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 309.6666666666667) internal successors, (929), 3 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:20:00,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 675.0) internal successors, (2700), 4 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:20:00,300 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 675.0) internal successors, (2700), 4 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:20:00,300 INFO L175 Difference]: Start difference. First operand has 76 places, 105 transitions, 518 flow. Second operand 3 states and 929 transitions. [2022-12-13 19:20:00,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 103 transitions, 714 flow [2022-12-13 19:20:00,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 103 transitions, 706 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-12-13 19:20:00,337 INFO L231 Difference]: Finished difference. Result has 75 places, 103 transitions, 502 flow [2022-12-13 19:20:00,337 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=675, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=502, PETRI_PLACES=75, PETRI_TRANSITIONS=103} [2022-12-13 19:20:00,338 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 19 predicate places. [2022-12-13 19:20:00,338 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 103 transitions, 502 flow [2022-12-13 19:20:00,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 294.25) internal successors, (1177), 4 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:20:00,338 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:20:00,338 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:20:00,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f56b4bb-b8bc-42b3-acc0-6129d980c274/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-13 19:20:00,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f56b4bb-b8bc-42b3-acc0-6129d980c274/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:20:00,540 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-12-13 19:20:00,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:20:00,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1363519681, now seen corresponding path program 1 times [2022-12-13 19:20:00,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:20:00,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992309416] [2022-12-13 19:20:00,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:20:00,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:20:00,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:20:00,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:20:00,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:20:00,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992309416] [2022-12-13 19:20:00,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992309416] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:20:00,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632333429] [2022-12-13 19:20:00,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:20:00,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:20:00,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f56b4bb-b8bc-42b3-acc0-6129d980c274/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:20:00,653 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f56b4bb-b8bc-42b3-acc0-6129d980c274/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:20:00,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f56b4bb-b8bc-42b3-acc0-6129d980c274/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 19:20:00,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:20:00,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 19:20:00,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:20:00,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:20:00,755 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:20:00,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632333429] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:20:00,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:20:00,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2022-12-13 19:20:00,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638590036] [2022-12-13 19:20:00,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:20:00,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:20:00,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:20:00,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:20:00,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:20:00,794 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 675 [2022-12-13 19:20:00,795 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 103 transitions, 502 flow. Second operand has 4 states, 4 states have (on average 314.25) internal successors, (1257), 4 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:20:00,795 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:20:00,795 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 675 [2022-12-13 19:20:00,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:20:15,549 INFO L130 PetriNetUnfolder]: 165188/223085 cut-off events. [2022-12-13 19:20:15,549 INFO L131 PetriNetUnfolder]: For 15977/15977 co-relation queries the response was YES. [2022-12-13 19:20:16,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 471175 conditions, 223085 events. 165188/223085 cut-off events. For 15977/15977 co-relation queries the response was YES. Maximal size of possible extension queue 5533. Compared 1473509 event pairs, 119350 based on Foata normal form. 3432/135173 useless extension candidates. Maximal degree in co-relation 471154. Up to 223073 conditions per place. [2022-12-13 19:20:16,657 INFO L137 encePairwiseOnDemand]: 671/675 looper letters, 89 selfloop transitions, 12 changer transitions 0/101 dead transitions. [2022-12-13 19:20:16,657 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 101 transitions, 698 flow [2022-12-13 19:20:16,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:20:16,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 19:20:16,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1300 transitions. [2022-12-13 19:20:16,663 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2022-12-13 19:20:16,663 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1300 transitions. [2022-12-13 19:20:16,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1300 transitions. [2022-12-13 19:20:16,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:20:16,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1300 transitions. [2022-12-13 19:20:16,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:20:16,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 675.0) internal successors, (3375), 5 states have internal predecessors, (3375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:20:16,668 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 675.0) internal successors, (3375), 5 states have internal predecessors, (3375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:20:16,668 INFO L175 Difference]: Start difference. First operand has 75 places, 103 transitions, 502 flow. Second operand 4 states and 1300 transitions. [2022-12-13 19:20:16,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 101 transitions, 698 flow [2022-12-13 19:20:16,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 101 transitions, 696 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 19:20:16,693 INFO L231 Difference]: Finished difference. Result has 74 places, 101 transitions, 518 flow [2022-12-13 19:20:16,693 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=675, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=518, PETRI_PLACES=74, PETRI_TRANSITIONS=101} [2022-12-13 19:20:16,694 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 18 predicate places. [2022-12-13 19:20:16,694 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 101 transitions, 518 flow [2022-12-13 19:20:16,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 314.25) internal successors, (1257), 4 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:20:16,694 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:20:16,694 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:20:16,698 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f56b4bb-b8bc-42b3-acc0-6129d980c274/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 19:20:16,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f56b4bb-b8bc-42b3-acc0-6129d980c274/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:20:16,896 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-12-13 19:20:16,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:20:16,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1257182511, now seen corresponding path program 1 times [2022-12-13 19:20:16,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:20:16,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054315095] [2022-12-13 19:20:16,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:20:16,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:20:16,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:20:16,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:20:16,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:20:16,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054315095] [2022-12-13 19:20:16,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054315095] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:20:16,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:20:16,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:20:16,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162619852] [2022-12-13 19:20:16,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:20:16,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:20:16,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:20:16,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:20:16,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:20:17,042 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 675 [2022-12-13 19:20:17,044 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 101 transitions, 518 flow. Second operand has 4 states, 4 states have (on average 304.5) internal successors, (1218), 4 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:20:17,044 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:20:17,044 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 675 [2022-12-13 19:20:17,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:20:43,801 INFO L130 PetriNetUnfolder]: 308394/414325 cut-off events. [2022-12-13 19:20:43,802 INFO L131 PetriNetUnfolder]: For 23062/23062 co-relation queries the response was YES. [2022-12-13 19:20:44,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 874304 conditions, 414325 events. 308394/414325 cut-off events. For 23062/23062 co-relation queries the response was YES. Maximal size of possible extension queue 9639. Compared 2876060 event pairs, 216814 based on Foata normal form. 0/246277 useless extension candidates. Maximal degree in co-relation 874283. Up to 203977 conditions per place. [2022-12-13 19:20:45,851 INFO L137 encePairwiseOnDemand]: 669/675 looper letters, 182 selfloop transitions, 15 changer transitions 0/197 dead transitions. [2022-12-13 19:20:45,852 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 197 transitions, 1200 flow [2022-12-13 19:20:45,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:20:45,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 19:20:45,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1649 transitions. [2022-12-13 19:20:45,855 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4885925925925926 [2022-12-13 19:20:45,855 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1649 transitions. [2022-12-13 19:20:45,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1649 transitions. [2022-12-13 19:20:45,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:20:45,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1649 transitions. [2022-12-13 19:20:45,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 329.8) internal successors, (1649), 5 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:20:45,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 675.0) internal successors, (4050), 6 states have internal predecessors, (4050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:20:45,860 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 675.0) internal successors, (4050), 6 states have internal predecessors, (4050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:20:45,860 INFO L175 Difference]: Start difference. First operand has 74 places, 101 transitions, 518 flow. Second operand 5 states and 1649 transitions. [2022-12-13 19:20:45,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 197 transitions, 1200 flow [2022-12-13 19:20:45,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 197 transitions, 1187 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 19:20:45,941 INFO L231 Difference]: Finished difference. Result has 79 places, 103 transitions, 568 flow [2022-12-13 19:20:45,941 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=675, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=568, PETRI_PLACES=79, PETRI_TRANSITIONS=103} [2022-12-13 19:20:45,941 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 23 predicate places. [2022-12-13 19:20:45,941 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 103 transitions, 568 flow [2022-12-13 19:20:45,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 304.5) internal successors, (1218), 4 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:20:45,941 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:20:45,941 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:20:45,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 19:20:45,942 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-12-13 19:20:45,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:20:45,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1257182462, now seen corresponding path program 1 times [2022-12-13 19:20:45,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:20:45,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257370870] [2022-12-13 19:20:45,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:20:45,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:20:45,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:20:45,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:20:45,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:20:45,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257370870] [2022-12-13 19:20:45,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257370870] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:20:45,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:20:45,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:20:45,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147592178] [2022-12-13 19:20:46,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:20:46,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:20:46,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:20:46,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:20:46,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:20:46,182 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 675 [2022-12-13 19:20:46,183 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 103 transitions, 568 flow. Second operand has 5 states, 5 states have (on average 301.0) internal successors, (1505), 5 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:20:46,183 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:20:46,183 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 675 [2022-12-13 19:20:46,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:21:14,018 INFO L130 PetriNetUnfolder]: 305858/410853 cut-off events. [2022-12-13 19:21:14,018 INFO L131 PetriNetUnfolder]: For 56523/56523 co-relation queries the response was YES. [2022-12-13 19:21:15,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 891329 conditions, 410853 events. 305858/410853 cut-off events. For 56523/56523 co-relation queries the response was YES. Maximal size of possible extension queue 9630. Compared 2853691 event pairs, 205040 based on Foata normal form. 936/260089 useless extension candidates. Maximal degree in co-relation 891307. Up to 358123 conditions per place. [2022-12-13 19:21:16,193 INFO L137 encePairwiseOnDemand]: 669/675 looper letters, 143 selfloop transitions, 26 changer transitions 0/169 dead transitions. [2022-12-13 19:21:16,193 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 169 transitions, 1071 flow [2022-12-13 19:21:16,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:21:16,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 19:21:16,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1910 transitions. [2022-12-13 19:21:16,197 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47160493827160493 [2022-12-13 19:21:16,197 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1910 transitions. [2022-12-13 19:21:16,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1910 transitions. [2022-12-13 19:21:16,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:21:16,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1910 transitions. [2022-12-13 19:21:16,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 318.3333333333333) internal successors, (1910), 6 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:21:16,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 675.0) internal successors, (4725), 7 states have internal predecessors, (4725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:21:16,203 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 675.0) internal successors, (4725), 7 states have internal predecessors, (4725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:21:16,203 INFO L175 Difference]: Start difference. First operand has 79 places, 103 transitions, 568 flow. Second operand 6 states and 1910 transitions. [2022-12-13 19:21:16,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 169 transitions, 1071 flow [2022-12-13 19:21:16,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 169 transitions, 1067 flow, removed 2 selfloop flow, removed 0 redundant places. [2022-12-13 19:21:16,335 INFO L231 Difference]: Finished difference. Result has 87 places, 105 transitions, 672 flow [2022-12-13 19:21:16,335 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=675, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=672, PETRI_PLACES=87, PETRI_TRANSITIONS=105} [2022-12-13 19:21:16,335 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 31 predicate places. [2022-12-13 19:21:16,335 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 105 transitions, 672 flow [2022-12-13 19:21:16,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 301.0) internal successors, (1505), 5 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:21:16,336 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:21:16,336 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:21:16,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 19:21:16,336 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-12-13 19:21:16,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:21:16,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1257180149, now seen corresponding path program 1 times [2022-12-13 19:21:16,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:21:16,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236483366] [2022-12-13 19:21:16,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:21:16,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:21:16,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:16,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:21:16,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:21:16,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236483366] [2022-12-13 19:21:16,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236483366] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:21:16,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:21:16,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:21:16,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990198518] [2022-12-13 19:21:16,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:21:16,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:21:16,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:21:16,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:21:16,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:21:16,379 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 675 [2022-12-13 19:21:16,380 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 105 transitions, 672 flow. Second operand has 3 states, 3 states have (on average 318.3333333333333) internal successors, (955), 3 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:21:16,380 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:21:16,380 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 675 [2022-12-13 19:21:16,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:22:04,830 INFO L130 PetriNetUnfolder]: 516070/693725 cut-off events. [2022-12-13 19:22:04,831 INFO L131 PetriNetUnfolder]: For 127331/127331 co-relation queries the response was YES. [2022-12-13 19:22:07,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1550496 conditions, 693725 events. 516070/693725 cut-off events. For 127331/127331 co-relation queries the response was YES. Maximal size of possible extension queue 15917. Compared 5184507 event pairs, 215240 based on Foata normal form. 0/451397 useless extension candidates. Maximal degree in co-relation 1550470. Up to 410854 conditions per place. [2022-12-13 19:22:09,014 INFO L137 encePairwiseOnDemand]: 671/675 looper letters, 140 selfloop transitions, 2 changer transitions 0/142 dead transitions. [2022-12-13 19:22:09,014 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 142 transitions, 1067 flow [2022-12-13 19:22:09,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:22:09,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:22:09,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1031 transitions. [2022-12-13 19:22:09,016 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5091358024691358 [2022-12-13 19:22:09,016 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1031 transitions. [2022-12-13 19:22:09,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1031 transitions. [2022-12-13 19:22:09,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:22:09,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1031 transitions. [2022-12-13 19:22:09,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 343.6666666666667) internal successors, (1031), 3 states have internal predecessors, (1031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:22:09,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 675.0) internal successors, (2700), 4 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:22:09,019 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 675.0) internal successors, (2700), 4 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:22:09,019 INFO L175 Difference]: Start difference. First operand has 87 places, 105 transitions, 672 flow. Second operand 3 states and 1031 transitions. [2022-12-13 19:22:09,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 142 transitions, 1067 flow [2022-12-13 19:22:10,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 142 transitions, 1019 flow, removed 6 selfloop flow, removed 2 redundant places. [2022-12-13 19:22:10,887 INFO L231 Difference]: Finished difference. Result has 88 places, 106 transitions, 642 flow [2022-12-13 19:22:10,887 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=675, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=642, PETRI_PLACES=88, PETRI_TRANSITIONS=106} [2022-12-13 19:22:10,887 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 32 predicate places. [2022-12-13 19:22:10,888 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 106 transitions, 642 flow [2022-12-13 19:22:10,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 318.3333333333333) internal successors, (955), 3 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:22:10,888 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:22:10,888 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:22:10,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 19:22:10,888 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-12-13 19:22:10,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:22:10,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1206813390, now seen corresponding path program 1 times [2022-12-13 19:22:10,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:22:10,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490029329] [2022-12-13 19:22:10,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:22:10,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:22:10,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:22:10,960 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:22:10,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:22:10,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490029329] [2022-12-13 19:22:10,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490029329] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:22:10,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:22:10,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:22:10,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998556011] [2022-12-13 19:22:10,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:22:10,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:22:10,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:22:10,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:22:10,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:22:11,054 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 675 [2022-12-13 19:22:11,055 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 106 transitions, 642 flow. Second operand has 5 states, 5 states have (on average 302.0) internal successors, (1510), 5 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:22:11,055 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:22:11,055 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 675 [2022-12-13 19:22:11,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:22:45,524 INFO L130 PetriNetUnfolder]: 348662/473797 cut-off events. [2022-12-13 19:22:45,524 INFO L131 PetriNetUnfolder]: For 136956/136956 co-relation queries the response was YES. [2022-12-13 19:22:47,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1091978 conditions, 473797 events. 348662/473797 cut-off events. For 136956/136956 co-relation queries the response was YES. Maximal size of possible extension queue 10982. Compared 3454914 event pairs, 212500 based on Foata normal form. 0/332885 useless extension candidates. Maximal degree in co-relation 1091952. Up to 346873 conditions per place. [2022-12-13 19:22:48,623 INFO L137 encePairwiseOnDemand]: 670/675 looper letters, 209 selfloop transitions, 4 changer transitions 0/213 dead transitions. [2022-12-13 19:22:48,623 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 213 transitions, 1588 flow [2022-12-13 19:22:48,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:22:48,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 19:22:48,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1622 transitions. [2022-12-13 19:22:48,626 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48059259259259257 [2022-12-13 19:22:48,626 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1622 transitions. [2022-12-13 19:22:48,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1622 transitions. [2022-12-13 19:22:48,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:22:48,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1622 transitions. [2022-12-13 19:22:48,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 324.4) internal successors, (1622), 5 states have internal predecessors, (1622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:22:48,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 675.0) internal successors, (4050), 6 states have internal predecessors, (4050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:22:48,632 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 675.0) internal successors, (4050), 6 states have internal predecessors, (4050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:22:48,632 INFO L175 Difference]: Start difference. First operand has 88 places, 106 transitions, 642 flow. Second operand 5 states and 1622 transitions. [2022-12-13 19:22:48,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 213 transitions, 1588 flow [2022-12-13 19:22:49,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 213 transitions, 1582 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:22:49,392 INFO L231 Difference]: Finished difference. Result has 93 places, 107 transitions, 659 flow [2022-12-13 19:22:49,392 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=675, PETRI_DIFFERENCE_MINUEND_FLOW=640, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=659, PETRI_PLACES=93, PETRI_TRANSITIONS=107} [2022-12-13 19:22:49,392 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 37 predicate places. [2022-12-13 19:22:49,392 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 107 transitions, 659 flow [2022-12-13 19:22:49,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 302.0) internal successors, (1510), 5 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:22:49,393 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:22:49,393 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:22:49,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 19:22:49,393 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-12-13 19:22:49,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:22:49,393 INFO L85 PathProgramCache]: Analyzing trace with hash 487038958, now seen corresponding path program 1 times [2022-12-13 19:22:49,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:22:49,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228694402] [2022-12-13 19:22:49,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:22:49,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:22:49,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:22:49,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:22:49,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:22:49,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228694402] [2022-12-13 19:22:49,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228694402] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:22:49,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435067168] [2022-12-13 19:22:49,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:22:49,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:22:49,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f56b4bb-b8bc-42b3-acc0-6129d980c274/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:22:49,456 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f56b4bb-b8bc-42b3-acc0-6129d980c274/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:22:49,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f56b4bb-b8bc-42b3-acc0-6129d980c274/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 19:22:49,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:22:49,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 19:22:49,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:22:49,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:22:49,574 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:22:49,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435067168] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:22:49,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:22:49,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2022-12-13 19:22:49,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603410053] [2022-12-13 19:22:49,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:22:49,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:22:49,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:22:49,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:22:49,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-13 19:22:49,615 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 675 [2022-12-13 19:22:49,615 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 107 transitions, 659 flow. Second operand has 4 states, 4 states have (on average 314.75) internal successors, (1259), 4 states have internal predecessors, (1259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:22:49,615 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:22:49,615 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 675 [2022-12-13 19:22:49,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:23:22,898 INFO L130 PetriNetUnfolder]: 325062/443637 cut-off events. [2022-12-13 19:23:22,898 INFO L131 PetriNetUnfolder]: For 167054/167054 co-relation queries the response was YES. [2022-12-13 19:23:24,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1014027 conditions, 443637 events. 325062/443637 cut-off events. For 167054/167054 co-relation queries the response was YES. Maximal size of possible extension queue 10354. Compared 3217460 event pairs, 241780 based on Foata normal form. 13120/331709 useless extension candidates. Maximal degree in co-relation 1013998. Up to 443625 conditions per place. [2022-12-13 19:23:25,706 INFO L137 encePairwiseOnDemand]: 672/675 looper letters, 93 selfloop transitions, 12 changer transitions 0/105 dead transitions. [2022-12-13 19:23:25,706 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 105 transitions, 855 flow [2022-12-13 19:23:25,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:23:25,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 19:23:25,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1298 transitions. [2022-12-13 19:23:25,709 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48074074074074075 [2022-12-13 19:23:25,709 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1298 transitions. [2022-12-13 19:23:25,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1298 transitions. [2022-12-13 19:23:25,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:23:25,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1298 transitions. [2022-12-13 19:23:25,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 324.5) internal successors, (1298), 4 states have internal predecessors, (1298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:23:25,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 675.0) internal successors, (3375), 5 states have internal predecessors, (3375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:23:25,713 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 675.0) internal successors, (3375), 5 states have internal predecessors, (3375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:23:25,713 INFO L175 Difference]: Start difference. First operand has 93 places, 107 transitions, 659 flow. Second operand 4 states and 1298 transitions. [2022-12-13 19:23:25,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 105 transitions, 855 flow [2022-12-13 19:23:26,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 105 transitions, 825 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-12-13 19:23:26,085 INFO L231 Difference]: Finished difference. Result has 90 places, 105 transitions, 639 flow [2022-12-13 19:23:26,086 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=675, PETRI_DIFFERENCE_MINUEND_FLOW=615, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=639, PETRI_PLACES=90, PETRI_TRANSITIONS=105} [2022-12-13 19:23:26,086 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 34 predicate places. [2022-12-13 19:23:26,086 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 105 transitions, 639 flow [2022-12-13 19:23:26,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 314.75) internal successors, (1259), 4 states have internal predecessors, (1259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:23:26,086 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:23:26,086 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:23:26,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f56b4bb-b8bc-42b3-acc0-6129d980c274/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-13 19:23:26,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f56b4bb-b8bc-42b3-acc0-6129d980c274/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 19:23:26,288 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-12-13 19:23:26,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:23:26,289 INFO L85 PathProgramCache]: Analyzing trace with hash 319956233, now seen corresponding path program 1 times [2022-12-13 19:23:26,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:23:26,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622994409] [2022-12-13 19:23:26,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:23:26,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:23:26,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:23:26,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:23:26,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:23:26,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622994409] [2022-12-13 19:23:26,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622994409] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:23:26,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:23:26,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:23:26,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711186202] [2022-12-13 19:23:26,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:23:26,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:23:26,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:23:26,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:23:26,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:23:26,537 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 675 [2022-12-13 19:23:26,538 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 105 transitions, 639 flow. Second operand has 5 states, 5 states have (on average 300.2) internal successors, (1501), 5 states have internal predecessors, (1501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:23:26,538 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:23:26,538 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 675 [2022-12-13 19:23:26,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:23:54,548 INFO L130 PetriNetUnfolder]: 279302/380629 cut-off events. [2022-12-13 19:23:54,548 INFO L131 PetriNetUnfolder]: For 94616/94616 co-relation queries the response was YES. [2022-12-13 19:23:55,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 871910 conditions, 380629 events. 279302/380629 cut-off events. For 94616/94616 co-relation queries the response was YES. Maximal size of possible extension queue 8823. Compared 2699051 event pairs, 203060 based on Foata normal form. 0/278461 useless extension candidates. Maximal degree in co-relation 871883. Up to 346003 conditions per place. [2022-12-13 19:23:56,796 INFO L137 encePairwiseOnDemand]: 668/675 looper letters, 120 selfloop transitions, 25 changer transitions 0/145 dead transitions. [2022-12-13 19:23:56,796 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 145 transitions, 1045 flow [2022-12-13 19:23:56,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:23:56,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 19:23:56,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1287 transitions. [2022-12-13 19:23:56,799 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4766666666666667 [2022-12-13 19:23:56,799 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1287 transitions. [2022-12-13 19:23:56,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1287 transitions. [2022-12-13 19:23:56,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:23:56,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1287 transitions. [2022-12-13 19:23:56,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 321.75) internal successors, (1287), 4 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:23:56,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 675.0) internal successors, (3375), 5 states have internal predecessors, (3375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:23:56,804 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 675.0) internal successors, (3375), 5 states have internal predecessors, (3375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:23:56,804 INFO L175 Difference]: Start difference. First operand has 90 places, 105 transitions, 639 flow. Second operand 4 states and 1287 transitions. [2022-12-13 19:23:56,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 145 transitions, 1045 flow [2022-12-13 19:23:57,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 145 transitions, 1032 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 19:23:57,100 INFO L231 Difference]: Finished difference. Result has 90 places, 104 transitions, 674 flow [2022-12-13 19:23:57,100 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=675, PETRI_DIFFERENCE_MINUEND_FLOW=624, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=674, PETRI_PLACES=90, PETRI_TRANSITIONS=104} [2022-12-13 19:23:57,100 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 34 predicate places. [2022-12-13 19:23:57,100 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 104 transitions, 674 flow [2022-12-13 19:23:57,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 300.2) internal successors, (1501), 5 states have internal predecessors, (1501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:23:57,101 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:23:57,101 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:23:57,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 19:23:57,101 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-12-13 19:23:57,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:23:57,101 INFO L85 PathProgramCache]: Analyzing trace with hash 319956217, now seen corresponding path program 1 times [2022-12-13 19:23:57,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:23:57,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582416587] [2022-12-13 19:23:57,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:23:57,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:23:57,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:23:57,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:23:57,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:23:57,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582416587] [2022-12-13 19:23:57,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582416587] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:23:57,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:23:57,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:23:57,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255293126] [2022-12-13 19:23:57,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:23:57,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:23:57,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:23:57,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:23:57,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:23:57,138 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 675 [2022-12-13 19:23:57,138 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 104 transitions, 674 flow. Second operand has 3 states, 3 states have (on average 318.6666666666667) internal successors, (956), 3 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:23:57,138 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:23:57,139 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 675 [2022-12-13 19:23:57,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:24:40,277 INFO L130 PetriNetUnfolder]: 416582/569653 cut-off events. [2022-12-13 19:24:40,278 INFO L131 PetriNetUnfolder]: For 145707/145707 co-relation queries the response was YES. [2022-12-13 19:24:42,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1298283 conditions, 569653 events. 416582/569653 cut-off events. For 145707/145707 co-relation queries the response was YES. Maximal size of possible extension queue 13475. Compared 4319110 event pairs, 203060 based on Foata normal form. 0/416093 useless extension candidates. Maximal degree in co-relation 1298256. Up to 380630 conditions per place. [2022-12-13 19:24:43,766 INFO L137 encePairwiseOnDemand]: 672/675 looper letters, 137 selfloop transitions, 2 changer transitions 0/139 dead transitions. [2022-12-13 19:24:43,767 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 139 transitions, 1063 flow [2022-12-13 19:24:43,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:24:43,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:24:43,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1025 transitions. [2022-12-13 19:24:43,769 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5061728395061729 [2022-12-13 19:24:43,769 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1025 transitions. [2022-12-13 19:24:43,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1025 transitions. [2022-12-13 19:24:43,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:24:43,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1025 transitions. [2022-12-13 19:24:43,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 341.6666666666667) internal successors, (1025), 3 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:24:43,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 675.0) internal successors, (2700), 4 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:24:43,773 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 675.0) internal successors, (2700), 4 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:24:43,773 INFO L175 Difference]: Start difference. First operand has 90 places, 104 transitions, 674 flow. Second operand 3 states and 1025 transitions. [2022-12-13 19:24:43,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 139 transitions, 1063 flow [2022-12-13 19:24:44,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 139 transitions, 1013 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 19:24:44,433 INFO L231 Difference]: Finished difference. Result has 90 places, 105 transitions, 636 flow [2022-12-13 19:24:44,433 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=675, PETRI_DIFFERENCE_MINUEND_FLOW=624, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=636, PETRI_PLACES=90, PETRI_TRANSITIONS=105} [2022-12-13 19:24:44,433 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 34 predicate places. [2022-12-13 19:24:44,433 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 105 transitions, 636 flow [2022-12-13 19:24:44,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 318.6666666666667) internal successors, (956), 3 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:24:44,434 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:24:44,434 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:24:44,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 19:24:44,434 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-12-13 19:24:44,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:24:44,434 INFO L85 PathProgramCache]: Analyzing trace with hash 377161207, now seen corresponding path program 1 times [2022-12-13 19:24:44,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:24:44,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309485850] [2022-12-13 19:24:44,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:24:44,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:24:44,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:24:44,482 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 19:24:44,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:24:44,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309485850] [2022-12-13 19:24:44,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309485850] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:24:44,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:24:44,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 19:24:44,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191026452] [2022-12-13 19:24:44,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:24:44,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:24:44,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:24:44,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:24:44,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:24:44,556 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 675 [2022-12-13 19:24:44,557 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 105 transitions, 636 flow. Second operand has 5 states, 5 states have (on average 302.2) internal successors, (1511), 5 states have internal predecessors, (1511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:24:44,557 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:24:44,557 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 675 [2022-12-13 19:24:44,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:25:20,123 INFO L130 PetriNetUnfolder]: 322554/445705 cut-off events. [2022-12-13 19:25:20,123 INFO L131 PetriNetUnfolder]: For 184558/184558 co-relation queries the response was YES. [2022-12-13 19:25:21,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1088828 conditions, 445705 events. 322554/445705 cut-off events. For 184558/184558 co-relation queries the response was YES. Maximal size of possible extension queue 10591. Compared 3366470 event pairs, 200992 based on Foata normal form. 2992/370685 useless extension candidates. Maximal degree in co-relation 1088801. Up to 301525 conditions per place. [2022-12-13 19:25:23,138 INFO L137 encePairwiseOnDemand]: 669/675 looper letters, 224 selfloop transitions, 18 changer transitions 0/242 dead transitions. [2022-12-13 19:25:23,138 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 242 transitions, 1581 flow [2022-12-13 19:25:23,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 19:25:23,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 19:25:23,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2271 transitions. [2022-12-13 19:25:23,142 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48063492063492064 [2022-12-13 19:25:23,142 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2271 transitions. [2022-12-13 19:25:23,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2271 transitions. [2022-12-13 19:25:23,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:25:23,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2271 transitions. [2022-12-13 19:25:23,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 324.42857142857144) internal successors, (2271), 7 states have internal predecessors, (2271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:25:23,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 675.0) internal successors, (5400), 8 states have internal predecessors, (5400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:25:23,148 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 675.0) internal successors, (5400), 8 states have internal predecessors, (5400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:25:23,148 INFO L175 Difference]: Start difference. First operand has 90 places, 105 transitions, 636 flow. Second operand 7 states and 2271 transitions. [2022-12-13 19:25:23,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 242 transitions, 1581 flow [2022-12-13 19:25:31,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 242 transitions, 1571 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:25:31,303 INFO L231 Difference]: Finished difference. Result has 97 places, 109 transitions, 710 flow [2022-12-13 19:25:31,303 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=675, PETRI_DIFFERENCE_MINUEND_FLOW=634, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=710, PETRI_PLACES=97, PETRI_TRANSITIONS=109} [2022-12-13 19:25:31,304 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 41 predicate places. [2022-12-13 19:25:31,304 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 109 transitions, 710 flow [2022-12-13 19:25:31,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 302.2) internal successors, (1511), 5 states have internal predecessors, (1511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:25:31,304 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:25:31,304 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:25:31,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 19:25:31,304 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-12-13 19:25:31,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:25:31,304 INFO L85 PathProgramCache]: Analyzing trace with hash 319956232, now seen corresponding path program 1 times [2022-12-13 19:25:31,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:25:31,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835372502] [2022-12-13 19:25:31,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:25:31,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:25:31,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:25:31,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:25:31,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:25:31,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835372502] [2022-12-13 19:25:31,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835372502] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:25:31,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:25:31,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:25:31,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628383696] [2022-12-13 19:25:31,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:25:31,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:25:31,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:25:31,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:25:31,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:25:31,479 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 675 [2022-12-13 19:25:31,481 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 109 transitions, 710 flow. Second operand has 5 states, 5 states have (on average 301.2) internal successors, (1506), 5 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:25:31,481 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:25:31,481 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 675 [2022-12-13 19:25:31,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:26:04,613 INFO L130 PetriNetUnfolder]: 298530/411473 cut-off events. [2022-12-13 19:26:04,613 INFO L131 PetriNetUnfolder]: For 237000/237000 co-relation queries the response was YES. [2022-12-13 19:26:06,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1022243 conditions, 411473 events. 298530/411473 cut-off events. For 237000/237000 co-relation queries the response was YES. Maximal size of possible extension queue 9694. Compared 3022477 event pairs, 230120 based on Foata normal form. 0/346133 useless extension candidates. Maximal degree in co-relation 1022214. Up to 292669 conditions per place. [2022-12-13 19:26:07,279 INFO L137 encePairwiseOnDemand]: 670/675 looper letters, 166 selfloop transitions, 14 changer transitions 0/180 dead transitions. [2022-12-13 19:26:07,279 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 180 transitions, 1479 flow [2022-12-13 19:26:07,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:26:07,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 19:26:07,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1583 transitions. [2022-12-13 19:26:07,283 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46903703703703703 [2022-12-13 19:26:07,283 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1583 transitions. [2022-12-13 19:26:07,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1583 transitions. [2022-12-13 19:26:07,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:26:07,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1583 transitions. [2022-12-13 19:26:07,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 316.6) internal successors, (1583), 5 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:07,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 675.0) internal successors, (4050), 6 states have internal predecessors, (4050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:07,288 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 675.0) internal successors, (4050), 6 states have internal predecessors, (4050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:07,288 INFO L175 Difference]: Start difference. First operand has 97 places, 109 transitions, 710 flow. Second operand 5 states and 1583 transitions. [2022-12-13 19:26:07,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 180 transitions, 1479 flow [2022-12-13 19:26:13,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 180 transitions, 1460 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 19:26:13,160 INFO L231 Difference]: Finished difference. Result has 101 places, 120 transitions, 877 flow [2022-12-13 19:26:13,160 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=675, PETRI_DIFFERENCE_MINUEND_FLOW=695, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=877, PETRI_PLACES=101, PETRI_TRANSITIONS=120} [2022-12-13 19:26:13,160 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 45 predicate places. [2022-12-13 19:26:13,160 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 120 transitions, 877 flow [2022-12-13 19:26:13,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 301.2) internal successors, (1506), 5 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:13,161 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:26:13,161 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:26:13,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 19:26:13,161 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-12-13 19:26:13,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:26:13,161 INFO L85 PathProgramCache]: Analyzing trace with hash 608566038, now seen corresponding path program 1 times [2022-12-13 19:26:13,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:26:13,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909039396] [2022-12-13 19:26:13,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:26:13,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:26:13,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:26:13,209 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:26:13,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:26:13,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909039396] [2022-12-13 19:26:13,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909039396] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:26:13,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771108363] [2022-12-13 19:26:13,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:26:13,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:26:13,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f56b4bb-b8bc-42b3-acc0-6129d980c274/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:26:13,211 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f56b4bb-b8bc-42b3-acc0-6129d980c274/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:26:13,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f56b4bb-b8bc-42b3-acc0-6129d980c274/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 19:26:13,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:26:13,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 19:26:13,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:26:13,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:26:13,299 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:26:13,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771108363] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:26:13,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:26:13,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2022-12-13 19:26:13,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594024284] [2022-12-13 19:26:13,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:26:13,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:26:13,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:26:13,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:26:13,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:26:13,324 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 675 [2022-12-13 19:26:13,325 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 120 transitions, 877 flow. Second operand has 4 states, 4 states have (on average 314.75) internal successors, (1259), 4 states have internal predecessors, (1259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:13,325 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:26:13,325 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 675 [2022-12-13 19:26:13,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:26:44,529 INFO L130 PetriNetUnfolder]: 275870/380101 cut-off events. [2022-12-13 19:26:44,529 INFO L131 PetriNetUnfolder]: For 230214/230214 co-relation queries the response was YES. [2022-12-13 19:26:46,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 938889 conditions, 380101 events. 275870/380101 cut-off events. For 230214/230214 co-relation queries the response was YES. Maximal size of possible extension queue 8989. Compared 2771967 event pairs, 211156 based on Foata normal form. 8712/343009 useless extension candidates. Maximal degree in co-relation 938856. Up to 380054 conditions per place. [2022-12-13 19:26:47,195 INFO L137 encePairwiseOnDemand]: 672/675 looper letters, 95 selfloop transitions, 23 changer transitions 0/118 dead transitions. [2022-12-13 19:26:47,195 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 118 transitions, 1100 flow [2022-12-13 19:26:47,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:26:47,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 19:26:47,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1296 transitions. [2022-12-13 19:26:47,198 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48 [2022-12-13 19:26:47,198 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1296 transitions. [2022-12-13 19:26:47,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1296 transitions. [2022-12-13 19:26:47,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:26:47,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1296 transitions. [2022-12-13 19:26:47,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 324.0) internal successors, (1296), 4 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:47,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 675.0) internal successors, (3375), 5 states have internal predecessors, (3375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:47,202 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 675.0) internal successors, (3375), 5 states have internal predecessors, (3375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:47,202 INFO L175 Difference]: Start difference. First operand has 101 places, 120 transitions, 877 flow. Second operand 4 states and 1296 transitions. [2022-12-13 19:26:47,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 118 transitions, 1100 flow [2022-12-13 19:26:51,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 118 transitions, 1024 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-12-13 19:26:51,991 INFO L231 Difference]: Finished difference. Result has 97 places, 118 transitions, 834 flow [2022-12-13 19:26:51,991 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=675, PETRI_DIFFERENCE_MINUEND_FLOW=788, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=834, PETRI_PLACES=97, PETRI_TRANSITIONS=118} [2022-12-13 19:26:51,992 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 41 predicate places. [2022-12-13 19:26:51,992 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 118 transitions, 834 flow [2022-12-13 19:26:51,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 314.75) internal successors, (1259), 4 states have internal predecessors, (1259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:51,992 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:26:51,992 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:26:51,996 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f56b4bb-b8bc-42b3-acc0-6129d980c274/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 19:26:52,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f56b4bb-b8bc-42b3-acc0-6129d980c274/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:26:52,194 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-12-13 19:26:52,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:26:52,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1264343393, now seen corresponding path program 1 times [2022-12-13 19:26:52,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:26:52,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539860298] [2022-12-13 19:26:52,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:26:52,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:26:52,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:26:52,251 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:26:52,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:26:52,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539860298] [2022-12-13 19:26:52,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539860298] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:26:52,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:26:52,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 19:26:52,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128229021] [2022-12-13 19:26:52,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:26:52,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:26:52,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:26:52,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:26:52,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:26:52,351 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 675 [2022-12-13 19:26:52,353 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 118 transitions, 834 flow. Second operand has 5 states, 5 states have (on average 302.4) internal successors, (1512), 5 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:52,353 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:26:52,353 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 675 [2022-12-13 19:26:52,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:27:16,348 INFO L130 PetriNetUnfolder]: 211586/292057 cut-off events. [2022-12-13 19:27:16,349 INFO L131 PetriNetUnfolder]: For 149700/149700 co-relation queries the response was YES. [2022-12-13 19:27:17,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 723579 conditions, 292057 events. 211586/292057 cut-off events. For 149700/149700 co-relation queries the response was YES. Maximal size of possible extension queue 6925. Compared 2087690 event pairs, 147422 based on Foata normal form. 0/258837 useless extension candidates. Maximal degree in co-relation 723548. Up to 252047 conditions per place. [2022-12-13 19:27:18,303 INFO L137 encePairwiseOnDemand]: 669/675 looper letters, 192 selfloop transitions, 17 changer transitions 8/217 dead transitions. [2022-12-13 19:27:18,303 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 217 transitions, 1627 flow [2022-12-13 19:27:18,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 19:27:18,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 19:27:18,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2238 transitions. [2022-12-13 19:27:18,306 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47365079365079366 [2022-12-13 19:27:18,306 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2238 transitions. [2022-12-13 19:27:18,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2238 transitions. [2022-12-13 19:27:18,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:27:18,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2238 transitions. [2022-12-13 19:27:18,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 319.7142857142857) internal successors, (2238), 7 states have internal predecessors, (2238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:27:18,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 675.0) internal successors, (5400), 8 states have internal predecessors, (5400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:27:18,312 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 675.0) internal successors, (5400), 8 states have internal predecessors, (5400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:27:18,312 INFO L175 Difference]: Start difference. First operand has 97 places, 118 transitions, 834 flow. Second operand 7 states and 2238 transitions. [2022-12-13 19:27:18,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 217 transitions, 1627 flow