./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/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_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/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_34995e30-154e-4fdc-b155-f1e6f384f32a/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 29fee1864b0d56497c32cb33e6aaa24ed5707e21c5b89ec418c6707c5ac52336 --- 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 16:02:53,434 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 16:02:53,436 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 16:02:53,449 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 16:02:53,449 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 16:02:53,450 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 16:02:53,450 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 16:02:53,452 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 16:02:53,453 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 16:02:53,453 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 16:02:53,454 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 16:02:53,455 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 16:02:53,455 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 16:02:53,455 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 16:02:53,456 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 16:02:53,457 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 16:02:53,457 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 16:02:53,458 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 16:02:53,459 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 16:02:53,460 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 16:02:53,461 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 16:02:53,463 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 16:02:53,464 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 16:02:53,465 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 16:02:53,467 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 16:02:53,467 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 16:02:53,468 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 16:02:53,468 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 16:02:53,469 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 16:02:53,469 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 16:02:53,470 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 16:02:53,470 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 16:02:53,471 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 16:02:53,471 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 16:02:53,472 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 16:02:53,472 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 16:02:53,473 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 16:02:53,473 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 16:02:53,473 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 16:02:53,474 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 16:02:53,474 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 16:02:53,475 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 16:02:53,490 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 16:02:53,490 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 16:02:53,490 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 16:02:53,491 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 16:02:53,491 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 16:02:53,496 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 16:02:53,497 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 16:02:53,498 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 16:02:53,498 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 16:02:53,498 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 16:02:53,499 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 16:02:53,499 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 16:02:53,499 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 16:02:53,499 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 16:02:53,499 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 16:02:53,500 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 16:02:53,500 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 16:02:53,500 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 16:02:53,500 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 16:02:53,500 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 16:02:53,500 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 16:02:53,500 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 16:02:53,500 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 16:02:53,501 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 16:02:53,501 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 16:02:53,501 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 16:02:53,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:02:53,501 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 16:02:53,501 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 16:02:53,502 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 16:02:53,502 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 16:02:53,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 16:02:53,502 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 16:02:53,502 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 16:02:53,502 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 16:02:53,503 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 16:02:53,503 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 16:02:53,503 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_34995e30-154e-4fdc-b155-f1e6f384f32a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29fee1864b0d56497c32cb33e6aaa24ed5707e21c5b89ec418c6707c5ac52336 [2022-12-13 16:02:53,665 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 16:02:53,685 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 16:02:53,687 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 16:02:53,688 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 16:02:53,688 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 16:02:53,689 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c [2022-12-13 16:02:56,374 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 16:02:56,546 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 16:02:56,547 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c [2022-12-13 16:02:56,554 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/data/105bad2c4/8b499a7cf3ae4560aac2499fe4be0bdf/FLAG5f22247d3 [2022-12-13 16:02:56,567 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/data/105bad2c4/8b499a7cf3ae4560aac2499fe4be0bdf [2022-12-13 16:02:56,570 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 16:02:56,571 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 16:02:56,573 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 16:02:56,573 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 16:02:56,576 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 16:02:56,577 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:02:56" (1/1) ... [2022-12-13 16:02:56,578 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10db69a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:02:56, skipping insertion in model container [2022-12-13 16:02:56,578 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:02:56" (1/1) ... [2022-12-13 16:02:56,585 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 16:02:56,604 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 16:02:56,724 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:02:56,729 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:02:56,730 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:02:56,730 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:02:56,732 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:02:56,733 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:02:56,733 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:02:56,735 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:02:56,736 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:02:56,736 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:02:56,747 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_34995e30-154e-4fdc-b155-f1e6f384f32a/sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c[4380,4393] [2022-12-13 16:02:56,752 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:02:56,759 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 16:02:56,769 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:02:56,770 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:02:56,771 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:02:56,771 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:02:56,771 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:02:56,772 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:02:56,772 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:02:56,774 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:02:56,774 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:02:56,775 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:02:56,782 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_34995e30-154e-4fdc-b155-f1e6f384f32a/sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c[4380,4393] [2022-12-13 16:02:56,785 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:02:56,796 INFO L208 MainTranslator]: Completed translation [2022-12-13 16:02:56,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:02:56 WrapperNode [2022-12-13 16:02:56,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 16:02:56,797 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 16:02:56,797 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 16:02:56,798 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 16:02:56,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:02:56" (1/1) ... [2022-12-13 16:02:56,810 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:02:56" (1/1) ... [2022-12-13 16:02:56,835 INFO L138 Inliner]: procedures = 28, calls = 80, calls flagged for inlining = 26, calls inlined = 32, statements flattened = 421 [2022-12-13 16:02:56,835 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 16:02:56,835 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 16:02:56,836 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 16:02:56,836 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 16:02:56,843 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:02:56" (1/1) ... [2022-12-13 16:02:56,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:02:56" (1/1) ... [2022-12-13 16:02:56,848 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:02:56" (1/1) ... [2022-12-13 16:02:56,848 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:02:56" (1/1) ... [2022-12-13 16:02:56,860 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:02:56" (1/1) ... [2022-12-13 16:02:56,865 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:02:56" (1/1) ... [2022-12-13 16:02:56,867 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:02:56" (1/1) ... [2022-12-13 16:02:56,869 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:02:56" (1/1) ... [2022-12-13 16:02:56,873 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 16:02:56,873 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 16:02:56,873 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 16:02:56,873 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 16:02:56,874 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:02:56" (1/1) ... [2022-12-13 16:02:56,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:02:56,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:02:56,899 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 16:02:56,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 16:02:56,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 16:02:56,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 16:02:56,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 16:02:56,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 16:02:56,933 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 16:02:56,933 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 16:02:56,933 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 16:02:56,933 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 16:02:56,933 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 16:02:56,933 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 16:02:56,934 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 16:02:56,934 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 16:02:56,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 16:02:56,934 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 16:02:56,934 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 16:02:56,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 16:02:56,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 16:02:56,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 16:02:56,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 16:02:56,935 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 16:02:57,030 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 16:02:57,031 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 16:02:57,546 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 16:02:57,719 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 16:02:57,719 INFO L300 CfgBuilder]: Removed 9 assume(true) statements. [2022-12-13 16:02:57,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:02:57 BoogieIcfgContainer [2022-12-13 16:02:57,721 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 16:02:57,723 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 16:02:57,723 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 16:02:57,725 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 16:02:57,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 04:02:56" (1/3) ... [2022-12-13 16:02:57,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9865c31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:02:57, skipping insertion in model container [2022-12-13 16:02:57,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:02:56" (2/3) ... [2022-12-13 16:02:57,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9865c31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:02:57, skipping insertion in model container [2022-12-13 16:02:57,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:02:57" (3/3) ... [2022-12-13 16:02:57,727 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons-eq.wvr.c [2022-12-13 16:02:57,734 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 16:02:57,741 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 16:02:57,741 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2022-12-13 16:02:57,742 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 16:02:57,819 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 16:02:57,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 422 places, 449 transitions, 922 flow [2022-12-13 16:02:57,939 INFO L130 PetriNetUnfolder]: 37/446 cut-off events. [2022-12-13 16:02:57,939 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 16:02:57,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 459 conditions, 446 events. 37/446 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 598 event pairs, 0 based on Foata normal form. 0/385 useless extension candidates. Maximal degree in co-relation 360. Up to 2 conditions per place. [2022-12-13 16:02:57,944 INFO L82 GeneralOperation]: Start removeDead. Operand has 422 places, 449 transitions, 922 flow [2022-12-13 16:02:57,951 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 399 places, 425 transitions, 865 flow [2022-12-13 16:02:57,953 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 16:02:57,961 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 399 places, 425 transitions, 865 flow [2022-12-13 16:02:57,963 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 399 places, 425 transitions, 865 flow [2022-12-13 16:02:57,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 399 places, 425 transitions, 865 flow [2022-12-13 16:02:58,010 INFO L130 PetriNetUnfolder]: 36/425 cut-off events. [2022-12-13 16:02:58,010 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 16:02:58,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 437 conditions, 425 events. 36/425 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 547 event pairs, 0 based on Foata normal form. 0/365 useless extension candidates. Maximal degree in co-relation 360. Up to 2 conditions per place. [2022-12-13 16:02:58,014 INFO L119 LiptonReduction]: Number of co-enabled transitions 7238 [2022-12-13 16:03:11,917 INFO L134 LiptonReduction]: Checked pairs total: 9286 [2022-12-13 16:03:11,917 INFO L136 LiptonReduction]: Total number of compositions: 502 [2022-12-13 16:03:11,931 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 16:03:11,937 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;@454142c2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 16:03:11,937 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2022-12-13 16:03:11,940 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-12-13 16:03:11,940 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 16:03:11,940 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:03:11,941 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 16:03:11,941 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-12-13 16:03:11,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:03:11,945 INFO L85 PathProgramCache]: Analyzing trace with hash 62964, now seen corresponding path program 1 times [2022-12-13 16:03:11,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:03:11,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278338316] [2022-12-13 16:03:11,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:03:11,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:03:12,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:03:12,201 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 16:03:12,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:03:12,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278338316] [2022-12-13 16:03:12,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278338316] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:03:12,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:03:12,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 16:03:12,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778399780] [2022-12-13 16:03:12,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:03:12,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:03:12,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:03:12,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:03:12,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:03:12,282 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 951 [2022-12-13 16:03:12,286 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 57 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 389.6666666666667) internal successors, (1169), 3 states have internal predecessors, (1169), 0 states have call successors, (0), 0 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 16:03:12,287 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:03:12,287 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 951 [2022-12-13 16:03:12,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:03:12,661 INFO L130 PetriNetUnfolder]: 1165/1771 cut-off events. [2022-12-13 16:03:12,662 INFO L131 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2022-12-13 16:03:12,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3735 conditions, 1771 events. 1165/1771 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 9208 event pairs, 890 based on Foata normal form. 0/927 useless extension candidates. Maximal degree in co-relation 1680. Up to 875 conditions per place. [2022-12-13 16:03:12,686 INFO L137 encePairwiseOnDemand]: 929/951 looper letters, 77 selfloop transitions, 8 changer transitions 4/91 dead transitions. [2022-12-13 16:03:12,686 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 91 transitions, 390 flow [2022-12-13 16:03:12,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:03:12,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:03:12,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1276 transitions. [2022-12-13 16:03:12,701 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44724851033999297 [2022-12-13 16:03:12,701 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1276 transitions. [2022-12-13 16:03:12,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1276 transitions. [2022-12-13 16:03:12,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:03:12,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1276 transitions. [2022-12-13 16:03:12,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 425.3333333333333) internal successors, (1276), 3 states have internal predecessors, (1276), 0 states have call successors, (0), 0 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 16:03:12,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 951.0) internal successors, (3804), 4 states have internal predecessors, (3804), 0 states have call successors, (0), 0 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 16:03:12,723 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 951.0) internal successors, (3804), 4 states have internal predecessors, (3804), 0 states have call successors, (0), 0 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 16:03:12,724 INFO L175 Difference]: Start difference. First operand has 58 places, 57 transitions, 129 flow. Second operand 3 states and 1276 transitions. [2022-12-13 16:03:12,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 91 transitions, 390 flow [2022-12-13 16:03:12,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 91 transitions, 372 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-12-13 16:03:12,732 INFO L231 Difference]: Finished difference. Result has 51 places, 56 transitions, 179 flow [2022-12-13 16:03:12,734 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=951, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=179, PETRI_PLACES=51, PETRI_TRANSITIONS=56} [2022-12-13 16:03:12,736 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, -7 predicate places. [2022-12-13 16:03:12,736 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 56 transitions, 179 flow [2022-12-13 16:03:12,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 389.6666666666667) internal successors, (1169), 3 states have internal predecessors, (1169), 0 states have call successors, (0), 0 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 16:03:12,737 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:03:12,737 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 16:03:12,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 16:03:12,737 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-12-13 16:03:12,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:03:12,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1955979, now seen corresponding path program 1 times [2022-12-13 16:03:12,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:03:12,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819039357] [2022-12-13 16:03:12,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:03:12,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:03:12,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:03:12,788 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 16:03:12,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:03:12,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819039357] [2022-12-13 16:03:12,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819039357] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:03:12,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:03:12,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:03:12,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99605070] [2022-12-13 16:03:12,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:03:12,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:03:12,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:03:12,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:03:12,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:03:12,829 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 951 [2022-12-13 16:03:12,832 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 56 transitions, 179 flow. Second operand has 3 states, 3 states have (on average 390.0) internal successors, (1170), 3 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:03:12,832 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:03:12,832 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 951 [2022-12-13 16:03:12,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:03:13,121 INFO L130 PetriNetUnfolder]: 1157/1751 cut-off events. [2022-12-13 16:03:13,121 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-12-13 16:03:13,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3679 conditions, 1751 events. 1157/1751 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 9222 event pairs, 886 based on Foata normal form. 0/925 useless extension candidates. Maximal degree in co-relation 1814. Up to 1719 conditions per place. [2022-12-13 16:03:13,127 INFO L137 encePairwiseOnDemand]: 946/951 looper letters, 49 selfloop transitions, 1 changer transitions 0/52 dead transitions. [2022-12-13 16:03:13,127 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 52 transitions, 263 flow [2022-12-13 16:03:13,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:03:13,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:03:13,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1214 transitions. [2022-12-13 16:03:13,130 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42551699964949175 [2022-12-13 16:03:13,130 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1214 transitions. [2022-12-13 16:03:13,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1214 transitions. [2022-12-13 16:03:13,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:03:13,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1214 transitions. [2022-12-13 16:03:13,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 404.6666666666667) internal successors, (1214), 3 states have internal predecessors, (1214), 0 states have call successors, (0), 0 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 16:03:13,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 951.0) internal successors, (3804), 4 states have internal predecessors, (3804), 0 states have call successors, (0), 0 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 16:03:13,137 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 951.0) internal successors, (3804), 4 states have internal predecessors, (3804), 0 states have call successors, (0), 0 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 16:03:13,137 INFO L175 Difference]: Start difference. First operand has 51 places, 56 transitions, 179 flow. Second operand 3 states and 1214 transitions. [2022-12-13 16:03:13,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 52 transitions, 263 flow [2022-12-13 16:03:13,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 52 transitions, 247 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 16:03:13,138 INFO L231 Difference]: Finished difference. Result has 45 places, 52 transitions, 149 flow [2022-12-13 16:03:13,138 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=951, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=149, PETRI_PLACES=45, PETRI_TRANSITIONS=52} [2022-12-13 16:03:13,139 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, -13 predicate places. [2022-12-13 16:03:13,139 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 52 transitions, 149 flow [2022-12-13 16:03:13,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 390.0) internal successors, (1170), 3 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:03:13,139 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:03:13,139 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 16:03:13,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 16:03:13,140 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-12-13 16:03:13,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:03:13,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1955980, now seen corresponding path program 1 times [2022-12-13 16:03:13,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:03:13,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065379627] [2022-12-13 16:03:13,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:03:13,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:03:13,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:03:13,194 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 16:03:13,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:03:13,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065379627] [2022-12-13 16:03:13,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065379627] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:03:13,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016770697] [2022-12-13 16:03:13,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:03:13,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:03:13,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:03:13,196 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:03:13,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 16:03:13,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:03:13,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 16:03:13,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:03:13,304 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 16:03:13,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:03:13,317 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 16:03:13,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016770697] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:03:13,317 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:03:13,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-12-13 16:03:13,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662897175] [2022-12-13 16:03:13,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:03:13,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:03:13,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:03:13,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:03:13,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:03:13,419 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 951 [2022-12-13 16:03:13,423 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 52 transitions, 149 flow. Second operand has 7 states, 7 states have (on average 390.14285714285717) internal successors, (2731), 7 states have internal predecessors, (2731), 0 states have call successors, (0), 0 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 16:03:13,423 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:03:13,423 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 951 [2022-12-13 16:03:13,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:03:14,208 INFO L130 PetriNetUnfolder]: 2891/4370 cut-off events. [2022-12-13 16:03:14,208 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2022-12-13 16:03:14,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9150 conditions, 4370 events. 2891/4370 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 26359 event pairs, 2215 based on Foata normal form. 0/2301 useless extension candidates. Maximal degree in co-relation 9142. Up to 866 conditions per place. [2022-12-13 16:03:14,223 INFO L137 encePairwiseOnDemand]: 939/951 looper letters, 166 selfloop transitions, 29 changer transitions 0/197 dead transitions. [2022-12-13 16:03:14,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 197 transitions, 891 flow [2022-12-13 16:03:14,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 16:03:14,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 16:03:14,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2541 transitions. [2022-12-13 16:03:14,228 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44532071503680337 [2022-12-13 16:03:14,228 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2541 transitions. [2022-12-13 16:03:14,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2541 transitions. [2022-12-13 16:03:14,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:03:14,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2541 transitions. [2022-12-13 16:03:14,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 423.5) internal successors, (2541), 6 states have internal predecessors, (2541), 0 states have call successors, (0), 0 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 16:03:14,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 951.0) internal successors, (6657), 7 states have internal predecessors, (6657), 0 states have call successors, (0), 0 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 16:03:14,240 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 951.0) internal successors, (6657), 7 states have internal predecessors, (6657), 0 states have call successors, (0), 0 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 16:03:14,240 INFO L175 Difference]: Start difference. First operand has 45 places, 52 transitions, 149 flow. Second operand 6 states and 2541 transitions. [2022-12-13 16:03:14,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 197 transitions, 891 flow [2022-12-13 16:03:14,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 197 transitions, 890 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:03:14,243 INFO L231 Difference]: Finished difference. Result has 52 places, 73 transitions, 355 flow [2022-12-13 16:03:14,243 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=951, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=355, PETRI_PLACES=52, PETRI_TRANSITIONS=73} [2022-12-13 16:03:14,243 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, -6 predicate places. [2022-12-13 16:03:14,243 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 73 transitions, 355 flow [2022-12-13 16:03:14,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 390.14285714285717) internal successors, (2731), 7 states have internal predecessors, (2731), 0 states have call successors, (0), 0 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 16:03:14,244 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:03:14,245 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 16:03:14,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 16:03:14,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:03:14,445 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-12-13 16:03:14,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:03:14,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1880707584, now seen corresponding path program 1 times [2022-12-13 16:03:14,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:03:14,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075488003] [2022-12-13 16:03:14,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:03:14,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:03:14,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:03:14,496 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 16:03:14,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:03:14,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075488003] [2022-12-13 16:03:14,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075488003] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:03:14,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:03:14,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:03:14,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509009115] [2022-12-13 16:03:14,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:03:14,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:03:14,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:03:14,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:03:14,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:03:14,507 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 398 out of 951 [2022-12-13 16:03:14,508 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 73 transitions, 355 flow. Second operand has 3 states, 3 states have (on average 399.6666666666667) internal successors, (1199), 3 states have internal predecessors, (1199), 0 states have call successors, (0), 0 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 16:03:14,508 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:03:14,508 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 398 of 951 [2022-12-13 16:03:14,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:03:15,587 INFO L130 PetriNetUnfolder]: 5766/8696 cut-off events. [2022-12-13 16:03:15,587 INFO L131 PetriNetUnfolder]: For 67/67 co-relation queries the response was YES. [2022-12-13 16:03:15,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18265 conditions, 8696 events. 5766/8696 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 868. Compared 58378 event pairs, 4430 based on Foata normal form. 0/4592 useless extension candidates. Maximal degree in co-relation 18253. Up to 4291 conditions per place. [2022-12-13 16:03:15,626 INFO L137 encePairwiseOnDemand]: 947/951 looper letters, 108 selfloop transitions, 2 changer transitions 0/112 dead transitions. [2022-12-13 16:03:15,626 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 112 transitions, 713 flow [2022-12-13 16:03:15,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:03:15,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:03:15,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1270 transitions. [2022-12-13 16:03:15,629 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44514546091833157 [2022-12-13 16:03:15,629 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1270 transitions. [2022-12-13 16:03:15,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1270 transitions. [2022-12-13 16:03:15,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:03:15,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1270 transitions. [2022-12-13 16:03:15,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 423.3333333333333) internal successors, (1270), 3 states have internal predecessors, (1270), 0 states have call successors, (0), 0 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 16:03:15,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 951.0) internal successors, (3804), 4 states have internal predecessors, (3804), 0 states have call successors, (0), 0 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 16:03:15,635 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 951.0) internal successors, (3804), 4 states have internal predecessors, (3804), 0 states have call successors, (0), 0 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 16:03:15,636 INFO L175 Difference]: Start difference. First operand has 52 places, 73 transitions, 355 flow. Second operand 3 states and 1270 transitions. [2022-12-13 16:03:15,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 112 transitions, 713 flow [2022-12-13 16:03:15,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 112 transitions, 661 flow, removed 15 selfloop flow, removed 1 redundant places. [2022-12-13 16:03:15,638 INFO L231 Difference]: Finished difference. Result has 54 places, 74 transitions, 328 flow [2022-12-13 16:03:15,638 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=951, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=328, PETRI_PLACES=54, PETRI_TRANSITIONS=74} [2022-12-13 16:03:15,639 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, -4 predicate places. [2022-12-13 16:03:15,639 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 74 transitions, 328 flow [2022-12-13 16:03:15,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 399.6666666666667) internal successors, (1199), 3 states have internal predecessors, (1199), 0 states have call successors, (0), 0 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 16:03:15,640 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:03:15,640 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-12-13 16:03:15,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 16:03:15,640 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-12-13 16:03:15,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:03:15,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1854905419, now seen corresponding path program 2 times [2022-12-13 16:03:15,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:03:15,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577574758] [2022-12-13 16:03:15,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:03:15,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:03:15,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:03:15,739 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 16:03:15,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:03:15,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577574758] [2022-12-13 16:03:15,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577574758] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:03:15,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704385204] [2022-12-13 16:03:15,740 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 16:03:15,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:03:15,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:03:15,741 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:03:15,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 16:03:15,814 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 16:03:15,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:03:15,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 16:03:15,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:03:15,828 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 16:03:15,828 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:03:15,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704385204] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:03:15,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:03:15,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-12-13 16:03:15,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752005672] [2022-12-13 16:03:15,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:03:15,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:03:15,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:03:15,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:03:15,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:03:15,864 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 393 out of 951 [2022-12-13 16:03:15,865 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 74 transitions, 328 flow. Second operand has 3 states, 3 states have (on average 394.0) internal successors, (1182), 3 states have internal predecessors, (1182), 0 states have call successors, (0), 0 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 16:03:15,865 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:03:15,865 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 393 of 951 [2022-12-13 16:03:15,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:03:16,830 INFO L130 PetriNetUnfolder]: 5766/8695 cut-off events. [2022-12-13 16:03:16,830 INFO L131 PetriNetUnfolder]: For 78/78 co-relation queries the response was YES. [2022-12-13 16:03:16,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18259 conditions, 8695 events. 5766/8695 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 871. Compared 58515 event pairs, 4430 based on Foata normal form. 1/4604 useless extension candidates. Maximal degree in co-relation 18246. Up to 8530 conditions per place. [2022-12-13 16:03:16,857 INFO L137 encePairwiseOnDemand]: 948/951 looper letters, 65 selfloop transitions, 6 changer transitions 0/73 dead transitions. [2022-12-13 16:03:16,857 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 73 transitions, 460 flow [2022-12-13 16:03:16,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:03:16,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:03:16,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1222 transitions. [2022-12-13 16:03:16,859 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4283210655450403 [2022-12-13 16:03:16,859 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1222 transitions. [2022-12-13 16:03:16,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1222 transitions. [2022-12-13 16:03:16,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:03:16,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1222 transitions. [2022-12-13 16:03:16,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 407.3333333333333) internal successors, (1222), 3 states have internal predecessors, (1222), 0 states have call successors, (0), 0 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 16:03:16,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 951.0) internal successors, (3804), 4 states have internal predecessors, (3804), 0 states have call successors, (0), 0 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 16:03:16,865 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 951.0) internal successors, (3804), 4 states have internal predecessors, (3804), 0 states have call successors, (0), 0 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 16:03:16,865 INFO L175 Difference]: Start difference. First operand has 54 places, 74 transitions, 328 flow. Second operand 3 states and 1222 transitions. [2022-12-13 16:03:16,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 73 transitions, 460 flow [2022-12-13 16:03:16,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 73 transitions, 458 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:03:16,867 INFO L231 Difference]: Finished difference. Result has 54 places, 73 transitions, 328 flow [2022-12-13 16:03:16,867 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=951, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=52, 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=328, PETRI_PLACES=54, PETRI_TRANSITIONS=73} [2022-12-13 16:03:16,868 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, -4 predicate places. [2022-12-13 16:03:16,868 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 73 transitions, 328 flow [2022-12-13 16:03:16,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 394.0) internal successors, (1182), 3 states have internal predecessors, (1182), 0 states have call successors, (0), 0 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 16:03:16,868 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:03:16,868 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 16:03:16,873 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 16:03:17,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:03:17,069 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-12-13 16:03:17,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:03:17,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1827601597, now seen corresponding path program 1 times [2022-12-13 16:03:17,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:03:17,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548096943] [2022-12-13 16:03:17,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:03:17,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:03:17,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:03:17,133 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 16:03:17,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:03:17,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548096943] [2022-12-13 16:03:17,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548096943] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:03:17,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:03:17,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:03:17,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445361665] [2022-12-13 16:03:17,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:03:17,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:03:17,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:03:17,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:03:17,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:03:17,143 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 398 out of 951 [2022-12-13 16:03:17,145 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 73 transitions, 328 flow. Second operand has 3 states, 3 states have (on average 400.0) internal successors, (1200), 3 states have internal predecessors, (1200), 0 states have call successors, (0), 0 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 16:03:17,145 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:03:17,145 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 398 of 951 [2022-12-13 16:03:17,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:03:18,039 INFO L130 PetriNetUnfolder]: 5766/8690 cut-off events. [2022-12-13 16:03:18,039 INFO L131 PetriNetUnfolder]: For 73/73 co-relation queries the response was YES. [2022-12-13 16:03:18,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18245 conditions, 8690 events. 5766/8690 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 877. Compared 58583 event pairs, 4430 based on Foata normal form. 0/4604 useless extension candidates. Maximal degree in co-relation 18231. Up to 8502 conditions per place. [2022-12-13 16:03:18,065 INFO L137 encePairwiseOnDemand]: 949/951 looper letters, 69 selfloop transitions, 1 changer transitions 0/72 dead transitions. [2022-12-13 16:03:18,065 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 72 transitions, 464 flow [2022-12-13 16:03:18,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:03:18,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:03:18,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1236 transitions. [2022-12-13 16:03:18,067 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4332281808622503 [2022-12-13 16:03:18,067 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1236 transitions. [2022-12-13 16:03:18,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1236 transitions. [2022-12-13 16:03:18,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:03:18,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1236 transitions. [2022-12-13 16:03:18,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 412.0) internal successors, (1236), 3 states have internal predecessors, (1236), 0 states have call successors, (0), 0 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 16:03:18,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 951.0) internal successors, (3804), 4 states have internal predecessors, (3804), 0 states have call successors, (0), 0 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 16:03:18,072 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 951.0) internal successors, (3804), 4 states have internal predecessors, (3804), 0 states have call successors, (0), 0 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 16:03:18,072 INFO L175 Difference]: Start difference. First operand has 54 places, 73 transitions, 328 flow. Second operand 3 states and 1236 transitions. [2022-12-13 16:03:18,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 72 transitions, 464 flow [2022-12-13 16:03:18,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 72 transitions, 452 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 16:03:18,074 INFO L231 Difference]: Finished difference. Result has 53 places, 72 transitions, 314 flow [2022-12-13 16:03:18,074 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=951, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=314, PETRI_PLACES=53, PETRI_TRANSITIONS=72} [2022-12-13 16:03:18,074 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, -5 predicate places. [2022-12-13 16:03:18,074 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 72 transitions, 314 flow [2022-12-13 16:03:18,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 400.0) internal successors, (1200), 3 states have internal predecessors, (1200), 0 states have call successors, (0), 0 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 16:03:18,075 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:03:18,075 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 16:03:18,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 16:03:18,076 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-12-13 16:03:18,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:03:18,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1827601541, now seen corresponding path program 1 times [2022-12-13 16:03:18,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:03:18,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410427486] [2022-12-13 16:03:18,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:03:18,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:03:18,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:03:18,145 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 16:03:18,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:03:18,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410427486] [2022-12-13 16:03:18,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410427486] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:03:18,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136458561] [2022-12-13 16:03:18,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:03:18,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:03:18,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:03:18,147 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:03:18,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 16:03:18,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:03:18,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 16:03:18,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:03:18,271 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 16:03:18,271 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:03:18,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136458561] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:03:18,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:03:18,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3] total 7 [2022-12-13 16:03:18,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169770426] [2022-12-13 16:03:18,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:03:18,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 16:03:18,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:03:18,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 16:03:18,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:03:18,397 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 379 out of 951 [2022-12-13 16:03:18,400 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 72 transitions, 314 flow. Second operand has 5 states, 5 states have (on average 380.2) internal successors, (1901), 5 states have internal predecessors, (1901), 0 states have call successors, (0), 0 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 16:03:18,400 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:03:18,400 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 379 of 951 [2022-12-13 16:03:18,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:03:19,967 INFO L130 PetriNetUnfolder]: 8191/12572 cut-off events. [2022-12-13 16:03:19,968 INFO L131 PetriNetUnfolder]: For 115/115 co-relation queries the response was YES. [2022-12-13 16:03:19,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26419 conditions, 12572 events. 8191/12572 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 1219. Compared 91730 event pairs, 6645 based on Foata normal form. 5/6900 useless extension candidates. Maximal degree in co-relation 26406. Up to 8525 conditions per place. [2022-12-13 16:03:20,000 INFO L137 encePairwiseOnDemand]: 942/951 looper letters, 126 selfloop transitions, 15 changer transitions 0/143 dead transitions. [2022-12-13 16:03:20,000 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 143 transitions, 827 flow [2022-12-13 16:03:20,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 16:03:20,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 16:03:20,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2762 transitions. [2022-12-13 16:03:20,004 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4149016073306294 [2022-12-13 16:03:20,004 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2762 transitions. [2022-12-13 16:03:20,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2762 transitions. [2022-12-13 16:03:20,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:03:20,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2762 transitions. [2022-12-13 16:03:20,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 394.57142857142856) internal successors, (2762), 7 states have internal predecessors, (2762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:03:20,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 951.0) internal successors, (7608), 8 states have internal predecessors, (7608), 0 states have call successors, (0), 0 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 16:03:20,013 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 951.0) internal successors, (7608), 8 states have internal predecessors, (7608), 0 states have call successors, (0), 0 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 16:03:20,013 INFO L175 Difference]: Start difference. First operand has 53 places, 72 transitions, 314 flow. Second operand 7 states and 2762 transitions. [2022-12-13 16:03:20,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 143 transitions, 827 flow [2022-12-13 16:03:20,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 143 transitions, 824 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:03:20,016 INFO L231 Difference]: Finished difference. Result has 61 places, 80 transitions, 425 flow [2022-12-13 16:03:20,016 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=951, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=425, PETRI_PLACES=61, PETRI_TRANSITIONS=80} [2022-12-13 16:03:20,016 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, 3 predicate places. [2022-12-13 16:03:20,016 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 80 transitions, 425 flow [2022-12-13 16:03:20,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 380.2) internal successors, (1901), 5 states have internal predecessors, (1901), 0 states have call successors, (0), 0 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 16:03:20,017 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:03:20,017 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:03:20,021 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 16:03:20,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:03:20,218 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-12-13 16:03:20,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:03:20,218 INFO L85 PathProgramCache]: Analyzing trace with hash -886592062, now seen corresponding path program 1 times [2022-12-13 16:03:20,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:03:20,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129052691] [2022-12-13 16:03:20,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:03:20,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:03:20,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:03:20,271 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 16:03:20,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:03:20,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129052691] [2022-12-13 16:03:20,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129052691] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:03:20,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022426562] [2022-12-13 16:03:20,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:03:20,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:03:20,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:03:20,273 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:03:20,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 16:03:20,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:03:20,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 16:03:20,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:03:20,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:03:20,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:03:20,494 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:03:20,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022426562] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:03:20,495 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:03:20,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 6] total 12 [2022-12-13 16:03:20,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183905599] [2022-12-13 16:03:20,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:03:20,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 16:03:20,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:03:20,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 16:03:20,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-12-13 16:03:21,026 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 369 out of 951 [2022-12-13 16:03:21,031 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 80 transitions, 425 flow. Second operand has 13 states, 13 states have (on average 370.46153846153845) internal successors, (4816), 13 states have internal predecessors, (4816), 0 states have call successors, (0), 0 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 16:03:21,032 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:03:21,032 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 369 of 951 [2022-12-13 16:03:21,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:03:24,393 INFO L130 PetriNetUnfolder]: 17782/27094 cut-off events. [2022-12-13 16:03:24,394 INFO L131 PetriNetUnfolder]: For 5073/5073 co-relation queries the response was YES. [2022-12-13 16:03:24,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61394 conditions, 27094 events. 17782/27094 cut-off events. For 5073/5073 co-relation queries the response was YES. Maximal size of possible extension queue 2347. Compared 213736 event pairs, 14176 based on Foata normal form. 5/16921 useless extension candidates. Maximal degree in co-relation 61378. Up to 8032 conditions per place. [2022-12-13 16:03:24,481 INFO L137 encePairwiseOnDemand]: 939/951 looper letters, 258 selfloop transitions, 31 changer transitions 0/291 dead transitions. [2022-12-13 16:03:24,482 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 291 transitions, 1749 flow [2022-12-13 16:03:24,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 16:03:24,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-12-13 16:03:24,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 8344 transitions. [2022-12-13 16:03:24,491 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3988146448714272 [2022-12-13 16:03:24,491 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 8344 transitions. [2022-12-13 16:03:24,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 8344 transitions. [2022-12-13 16:03:24,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:03:24,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 8344 transitions. [2022-12-13 16:03:24,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 379.27272727272725) internal successors, (8344), 22 states have internal predecessors, (8344), 0 states have call successors, (0), 0 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 16:03:24,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 951.0) internal successors, (21873), 23 states have internal predecessors, (21873), 0 states have call successors, (0), 0 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 16:03:24,518 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 951.0) internal successors, (21873), 23 states have internal predecessors, (21873), 0 states have call successors, (0), 0 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 16:03:24,518 INFO L175 Difference]: Start difference. First operand has 61 places, 80 transitions, 425 flow. Second operand 22 states and 8344 transitions. [2022-12-13 16:03:24,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 291 transitions, 1749 flow [2022-12-13 16:03:24,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 291 transitions, 1743 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-12-13 16:03:24,538 INFO L231 Difference]: Finished difference. Result has 88 places, 98 transitions, 636 flow [2022-12-13 16:03:24,538 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=951, PETRI_DIFFERENCE_MINUEND_FLOW=419, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=636, PETRI_PLACES=88, PETRI_TRANSITIONS=98} [2022-12-13 16:03:24,538 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, 30 predicate places. [2022-12-13 16:03:24,538 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 98 transitions, 636 flow [2022-12-13 16:03:24,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 370.46153846153845) internal successors, (4816), 13 states have internal predecessors, (4816), 0 states have call successors, (0), 0 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 16:03:24,539 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:03:24,539 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2022-12-13 16:03:24,544 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 16:03:24,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:03:24,741 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-12-13 16:03:24,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:03:24,742 INFO L85 PathProgramCache]: Analyzing trace with hash -888776126, now seen corresponding path program 1 times [2022-12-13 16:03:24,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:03:24,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132349018] [2022-12-13 16:03:24,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:03:24,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:03:24,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:03:24,849 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 16:03:24,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:03:24,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132349018] [2022-12-13 16:03:24,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132349018] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:03:24,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021967927] [2022-12-13 16:03:24,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:03:24,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:03:24,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:03:24,851 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:03:24,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 16:03:24,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:03:24,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 16:03:24,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:03:24,966 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 16:03:24,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:03:24,995 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 16:03:24,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021967927] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:03:24,995 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:03:24,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-12-13 16:03:24,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904676349] [2022-12-13 16:03:24,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:03:24,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 16:03:24,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:03:24,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 16:03:24,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-12-13 16:03:25,123 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 951 [2022-12-13 16:03:25,126 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 98 transitions, 636 flow. Second operand has 13 states, 13 states have (on average 390.15384615384613) internal successors, (5072), 13 states have internal predecessors, (5072), 0 states have call successors, (0), 0 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 16:03:25,126 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:03:25,126 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 951 [2022-12-13 16:03:25,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:03:31,950 INFO L130 PetriNetUnfolder]: 37960/57748 cut-off events. [2022-12-13 16:03:31,950 INFO L131 PetriNetUnfolder]: For 11658/11658 co-relation queries the response was YES. [2022-12-13 16:03:32,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131344 conditions, 57748 events. 37960/57748 cut-off events. For 11658/11658 co-relation queries the response was YES. Maximal size of possible extension queue 3024. Compared 479245 event pairs, 30124 based on Foata normal form. 60/36170 useless extension candidates. Maximal degree in co-relation 131322. Up to 7670 conditions per place. [2022-12-13 16:03:32,223 INFO L137 encePairwiseOnDemand]: 940/951 looper letters, 447 selfloop transitions, 85 changer transitions 0/534 dead transitions. [2022-12-13 16:03:32,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 534 transitions, 3590 flow [2022-12-13 16:03:32,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 16:03:32,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 16:03:32,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 5097 transitions. [2022-12-13 16:03:32,230 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44663512092534174 [2022-12-13 16:03:32,230 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 5097 transitions. [2022-12-13 16:03:32,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 5097 transitions. [2022-12-13 16:03:32,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:03:32,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 5097 transitions. [2022-12-13 16:03:32,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 424.75) internal successors, (5097), 12 states have internal predecessors, (5097), 0 states have call successors, (0), 0 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 16:03:32,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 951.0) internal successors, (12363), 13 states have internal predecessors, (12363), 0 states have call successors, (0), 0 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 16:03:32,247 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 951.0) internal successors, (12363), 13 states have internal predecessors, (12363), 0 states have call successors, (0), 0 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 16:03:32,247 INFO L175 Difference]: Start difference. First operand has 88 places, 98 transitions, 636 flow. Second operand 12 states and 5097 transitions. [2022-12-13 16:03:32,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 534 transitions, 3590 flow [2022-12-13 16:03:32,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 534 transitions, 3337 flow, removed 91 selfloop flow, removed 3 redundant places. [2022-12-13 16:03:32,377 INFO L231 Difference]: Finished difference. Result has 102 places, 146 transitions, 1267 flow [2022-12-13 16:03:32,377 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=951, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1267, PETRI_PLACES=102, PETRI_TRANSITIONS=146} [2022-12-13 16:03:32,377 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, 44 predicate places. [2022-12-13 16:03:32,378 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 146 transitions, 1267 flow [2022-12-13 16:03:32,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 390.15384615384613) internal successors, (5072), 13 states have internal predecessors, (5072), 0 states have call successors, (0), 0 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 16:03:32,379 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:03:32,379 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:03:32,383 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 16:03:32,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-13 16:03:32,580 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-12-13 16:03:32,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:03:32,581 INFO L85 PathProgramCache]: Analyzing trace with hash -821046249, now seen corresponding path program 1 times [2022-12-13 16:03:32,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:03:32,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173969449] [2022-12-13 16:03:32,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:03:32,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:03:32,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:03:32,662 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 16:03:32,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:03:32,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173969449] [2022-12-13 16:03:32,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173969449] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:03:32,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:03:32,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:03:32,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636489192] [2022-12-13 16:03:32,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:03:32,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:03:32,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:03:32,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:03:32,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:03:32,672 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 398 out of 951 [2022-12-13 16:03:32,673 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 146 transitions, 1267 flow. Second operand has 3 states, 3 states have (on average 400.3333333333333) internal successors, (1201), 3 states have internal predecessors, (1201), 0 states have call successors, (0), 0 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 16:03:32,673 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:03:32,673 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 398 of 951 [2022-12-13 16:03:32,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:03:46,539 INFO L130 PetriNetUnfolder]: 73888/112052 cut-off events. [2022-12-13 16:03:46,539 INFO L131 PetriNetUnfolder]: For 23192/23192 co-relation queries the response was YES. [2022-12-13 16:03:46,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255328 conditions, 112052 events. 73888/112052 cut-off events. For 23192/23192 co-relation queries the response was YES. Maximal size of possible extension queue 5540. Compared 994939 event pairs, 58476 based on Foata normal form. 0/70195 useless extension candidates. Maximal degree in co-relation 255298. Up to 55155 conditions per place. [2022-12-13 16:03:47,204 INFO L137 encePairwiseOnDemand]: 947/951 looper letters, 197 selfloop transitions, 8 changer transitions 0/207 dead transitions. [2022-12-13 16:03:47,204 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 207 transitions, 2179 flow [2022-12-13 16:03:47,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:03:47,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:03:47,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1264 transitions. [2022-12-13 16:03:47,208 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4430424114966702 [2022-12-13 16:03:47,208 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1264 transitions. [2022-12-13 16:03:47,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1264 transitions. [2022-12-13 16:03:47,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:03:47,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1264 transitions. [2022-12-13 16:03:47,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 421.3333333333333) internal successors, (1264), 3 states have internal predecessors, (1264), 0 states have call successors, (0), 0 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 16:03:47,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 951.0) internal successors, (3804), 4 states have internal predecessors, (3804), 0 states have call successors, (0), 0 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 16:03:47,212 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 951.0) internal successors, (3804), 4 states have internal predecessors, (3804), 0 states have call successors, (0), 0 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 16:03:47,212 INFO L175 Difference]: Start difference. First operand has 102 places, 146 transitions, 1267 flow. Second operand 3 states and 1264 transitions. [2022-12-13 16:03:47,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 207 transitions, 2179 flow [2022-12-13 16:03:47,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 207 transitions, 1879 flow, removed 65 selfloop flow, removed 5 redundant places. [2022-12-13 16:03:47,365 INFO L231 Difference]: Finished difference. Result has 100 places, 147 transitions, 1073 flow [2022-12-13 16:03:47,366 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=951, PETRI_DIFFERENCE_MINUEND_FLOW=1041, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1073, PETRI_PLACES=100, PETRI_TRANSITIONS=147} [2022-12-13 16:03:47,366 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, 42 predicate places. [2022-12-13 16:03:47,366 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 147 transitions, 1073 flow [2022-12-13 16:03:47,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 400.3333333333333) internal successors, (1201), 3 states have internal predecessors, (1201), 0 states have call successors, (0), 0 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 16:03:47,367 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:03:47,367 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:03:47,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 16:03:47,367 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-12-13 16:03:47,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:03:47,367 INFO L85 PathProgramCache]: Analyzing trace with hash 317192685, now seen corresponding path program 1 times [2022-12-13 16:03:47,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:03:47,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345428106] [2022-12-13 16:03:47,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:03:47,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:03:47,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:03:47,410 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 16:03:47,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:03:47,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345428106] [2022-12-13 16:03:47,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345428106] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:03:47,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:03:47,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 16:03:47,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976550739] [2022-12-13 16:03:47,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:03:47,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:03:47,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:03:47,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:03:47,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:03:47,420 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 400 out of 951 [2022-12-13 16:03:47,421 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 147 transitions, 1073 flow. Second operand has 3 states, 3 states have (on average 402.6666666666667) internal successors, (1208), 3 states have internal predecessors, (1208), 0 states have call successors, (0), 0 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 16:03:47,421 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:03:47,421 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 400 of 951 [2022-12-13 16:03:47,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:04:06,364 INFO L130 PetriNetUnfolder]: 111024/161464 cut-off events. [2022-12-13 16:04:06,364 INFO L131 PetriNetUnfolder]: For 36473/36473 co-relation queries the response was YES. [2022-12-13 16:04:06,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354999 conditions, 161464 events. 111024/161464 cut-off events. For 36473/36473 co-relation queries the response was YES. Maximal size of possible extension queue 6962. Compared 1303854 event pairs, 31548 based on Foata normal form. 0/95320 useless extension candidates. Maximal degree in co-relation 354969. Up to 138205 conditions per place. [2022-12-13 16:04:07,307 INFO L137 encePairwiseOnDemand]: 943/951 looper letters, 153 selfloop transitions, 2 changer transitions 3/160 dead transitions. [2022-12-13 16:04:07,307 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 160 transitions, 1423 flow [2022-12-13 16:04:07,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:04:07,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:04:07,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1260 transitions. [2022-12-13 16:04:07,310 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4416403785488959 [2022-12-13 16:04:07,310 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1260 transitions. [2022-12-13 16:04:07,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1260 transitions. [2022-12-13 16:04:07,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:04:07,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1260 transitions. [2022-12-13 16:04:07,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 420.0) internal successors, (1260), 3 states have internal predecessors, (1260), 0 states have call successors, (0), 0 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 16:04:07,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 951.0) internal successors, (3804), 4 states have internal predecessors, (3804), 0 states have call successors, (0), 0 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 16:04:07,314 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 951.0) internal successors, (3804), 4 states have internal predecessors, (3804), 0 states have call successors, (0), 0 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 16:04:07,314 INFO L175 Difference]: Start difference. First operand has 100 places, 147 transitions, 1073 flow. Second operand 3 states and 1260 transitions. [2022-12-13 16:04:07,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 160 transitions, 1423 flow [2022-12-13 16:04:07,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 160 transitions, 1415 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:04:07,441 INFO L231 Difference]: Finished difference. Result has 102 places, 148 transitions, 1087 flow [2022-12-13 16:04:07,441 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=951, PETRI_DIFFERENCE_MINUEND_FLOW=1065, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1087, PETRI_PLACES=102, PETRI_TRANSITIONS=148} [2022-12-13 16:04:07,441 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, 44 predicate places. [2022-12-13 16:04:07,441 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 148 transitions, 1087 flow [2022-12-13 16:04:07,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 402.6666666666667) internal successors, (1208), 3 states have internal predecessors, (1208), 0 states have call successors, (0), 0 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 16:04:07,442 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:04:07,442 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:04:07,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 16:04:07,442 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-12-13 16:04:07,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:04:07,442 INFO L85 PathProgramCache]: Analyzing trace with hash 317192684, now seen corresponding path program 1 times [2022-12-13 16:04:07,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:04:07,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950217546] [2022-12-13 16:04:07,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:04:07,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:04:07,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:04:07,484 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 16:04:07,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:04:07,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950217546] [2022-12-13 16:04:07,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950217546] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:04:07,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:04:07,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 16:04:07,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25589368] [2022-12-13 16:04:07,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:04:07,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:04:07,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:04:07,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:04:07,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:04:07,493 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 399 out of 951 [2022-12-13 16:04:07,494 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 148 transitions, 1087 flow. Second operand has 3 states, 3 states have (on average 401.6666666666667) internal successors, (1205), 3 states have internal predecessors, (1205), 0 states have call successors, (0), 0 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 16:04:07,494 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:04:07,494 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 399 of 951 [2022-12-13 16:04:07,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:04:25,816 INFO L130 PetriNetUnfolder]: 107944/152444 cut-off events. [2022-12-13 16:04:25,816 INFO L131 PetriNetUnfolder]: For 46845/61233 co-relation queries the response was YES. [2022-12-13 16:04:26,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 401223 conditions, 152444 events. 107944/152444 cut-off events. For 46845/61233 co-relation queries the response was YES. Maximal size of possible extension queue 6460. Compared 1206881 event pairs, 22836 based on Foata normal form. 132/100160 useless extension candidates. Maximal degree in co-relation 401191. Up to 138205 conditions per place. [2022-12-13 16:04:26,801 INFO L137 encePairwiseOnDemand]: 948/951 looper letters, 152 selfloop transitions, 2 changer transitions 3/159 dead transitions. [2022-12-13 16:04:26,802 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 159 transitions, 1431 flow [2022-12-13 16:04:26,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:04:26,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:04:26,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1251 transitions. [2022-12-13 16:04:26,804 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4384858044164038 [2022-12-13 16:04:26,804 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1251 transitions. [2022-12-13 16:04:26,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1251 transitions. [2022-12-13 16:04:26,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:04:26,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1251 transitions. [2022-12-13 16:04:26,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 417.0) internal successors, (1251), 3 states have internal predecessors, (1251), 0 states have call successors, (0), 0 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 16:04:26,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 951.0) internal successors, (3804), 4 states have internal predecessors, (3804), 0 states have call successors, (0), 0 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 16:04:26,808 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 951.0) internal successors, (3804), 4 states have internal predecessors, (3804), 0 states have call successors, (0), 0 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 16:04:26,808 INFO L175 Difference]: Start difference. First operand has 102 places, 148 transitions, 1087 flow. Second operand 3 states and 1251 transitions. [2022-12-13 16:04:26,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 159 transitions, 1431 flow [2022-12-13 16:04:26,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 159 transitions, 1429 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:04:26,909 INFO L231 Difference]: Finished difference. Result has 104 places, 148 transitions, 1093 flow [2022-12-13 16:04:26,909 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=951, PETRI_DIFFERENCE_MINUEND_FLOW=1085, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1093, PETRI_PLACES=104, PETRI_TRANSITIONS=148} [2022-12-13 16:04:26,910 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, 46 predicate places. [2022-12-13 16:04:26,910 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 148 transitions, 1093 flow [2022-12-13 16:04:26,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 401.6666666666667) internal successors, (1205), 3 states have internal predecessors, (1205), 0 states have call successors, (0), 0 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 16:04:26,910 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:04:26,910 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-13 16:04:26,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 16:04:26,910 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-12-13 16:04:26,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:04:26,911 INFO L85 PathProgramCache]: Analyzing trace with hash 652430776, now seen corresponding path program 2 times [2022-12-13 16:04:26,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:04:26,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262166011] [2022-12-13 16:04:26,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:04:26,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:04:26,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:04:26,968 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 16:04:26,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:04:26,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262166011] [2022-12-13 16:04:26,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262166011] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:04:26,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552549615] [2022-12-13 16:04:26,969 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 16:04:26,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:04:26,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:04:26,970 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:04:26,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 16:04:27,070 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 16:04:27,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:04:27,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 16:04:27,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:04:27,087 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 16:04:27,087 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:04:27,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552549615] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:04:27,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:04:27,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2022-12-13 16:04:27,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673011808] [2022-12-13 16:04:27,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:04:27,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:04:27,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:04:27,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:04:27,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:04:27,102 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 397 out of 951 [2022-12-13 16:04:27,103 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 148 transitions, 1093 flow. Second operand has 4 states, 4 states have (on average 398.75) internal successors, (1595), 4 states have internal predecessors, (1595), 0 states have call successors, (0), 0 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 16:04:27,103 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:04:27,103 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 397 of 951 [2022-12-13 16:04:27,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:04:41,668 INFO L130 PetriNetUnfolder]: 80620/122865 cut-off events. [2022-12-13 16:04:41,668 INFO L131 PetriNetUnfolder]: For 46933/46933 co-relation queries the response was YES. [2022-12-13 16:04:42,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329626 conditions, 122865 events. 80620/122865 cut-off events. For 46933/46933 co-relation queries the response was YES. Maximal size of possible extension queue 6216. Compared 1123635 event pairs, 64812 based on Foata normal form. 0/96068 useless extension candidates. Maximal degree in co-relation 329592. Up to 122255 conditions per place. [2022-12-13 16:04:42,457 INFO L137 encePairwiseOnDemand]: 948/951 looper letters, 139 selfloop transitions, 6 changer transitions 0/147 dead transitions. [2022-12-13 16:04:42,457 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 147 transitions, 1375 flow [2022-12-13 16:04:42,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:04:42,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 16:04:42,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1629 transitions. [2022-12-13 16:04:42,460 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4282334384858044 [2022-12-13 16:04:42,460 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1629 transitions. [2022-12-13 16:04:42,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1629 transitions. [2022-12-13 16:04:42,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:04:42,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1629 transitions. [2022-12-13 16:04:42,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 407.25) internal successors, (1629), 4 states have internal predecessors, (1629), 0 states have call successors, (0), 0 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 16:04:42,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 951.0) internal successors, (4755), 5 states have internal predecessors, (4755), 0 states have call successors, (0), 0 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 16:04:42,465 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 951.0) internal successors, (4755), 5 states have internal predecessors, (4755), 0 states have call successors, (0), 0 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 16:04:42,465 INFO L175 Difference]: Start difference. First operand has 104 places, 148 transitions, 1093 flow. Second operand 4 states and 1629 transitions. [2022-12-13 16:04:42,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 147 transitions, 1375 flow [2022-12-13 16:04:42,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 147 transitions, 1371 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 16:04:42,664 INFO L231 Difference]: Finished difference. Result has 104 places, 147 transitions, 1093 flow [2022-12-13 16:04:42,665 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=951, PETRI_DIFFERENCE_MINUEND_FLOW=1081, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1093, PETRI_PLACES=104, PETRI_TRANSITIONS=147} [2022-12-13 16:04:42,665 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, 46 predicate places. [2022-12-13 16:04:42,665 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 147 transitions, 1093 flow [2022-12-13 16:04:42,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 398.75) internal successors, (1595), 4 states have internal predecessors, (1595), 0 states have call successors, (0), 0 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 16:04:42,665 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:04:42,665 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:04:42,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-13 16:04:42,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:04:42,867 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-12-13 16:04:42,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:04:42,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1248600739, now seen corresponding path program 1 times [2022-12-13 16:04:42,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:04:42,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779657035] [2022-12-13 16:04:42,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:04:42,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:04:42,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:04:42,953 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:04:42,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:04:42,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779657035] [2022-12-13 16:04:42,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779657035] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:04:42,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111854549] [2022-12-13 16:04:42,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:04:42,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:04:42,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:04:42,955 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:04:42,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 16:04:43,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:04:43,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 16:04:43,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:04:43,072 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:04:43,072 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:04:43,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111854549] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:04:43,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:04:43,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-12-13 16:04:43,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192905259] [2022-12-13 16:04:43,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:04:43,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:04:43,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:04:43,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:04:43,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:04:43,085 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 398 out of 951 [2022-12-13 16:04:43,086 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 147 transitions, 1093 flow. Second operand has 4 states, 4 states have (on average 400.25) internal successors, (1601), 4 states have internal predecessors, (1601), 0 states have call successors, (0), 0 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 16:04:43,087 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:04:43,087 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 398 of 951 [2022-12-13 16:04:43,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:04:58,423 INFO L130 PetriNetUnfolder]: 80620/122799 cut-off events. [2022-12-13 16:04:58,423 INFO L131 PetriNetUnfolder]: For 43465/43465 co-relation queries the response was YES. [2022-12-13 16:04:58,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 327613 conditions, 122799 events. 80620/122799 cut-off events. For 43465/43465 co-relation queries the response was YES. Maximal size of possible extension queue 6215. Compared 1120699 event pairs, 64812 based on Foata normal form. 0/96200 useless extension candidates. Maximal degree in co-relation 327579. Up to 61122 conditions per place. [2022-12-13 16:04:59,233 INFO L137 encePairwiseOnDemand]: 948/951 looper letters, 197 selfloop transitions, 8 changer transitions 0/207 dead transitions. [2022-12-13 16:04:59,233 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 207 transitions, 1946 flow [2022-12-13 16:04:59,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:04:59,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 16:04:59,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1659 transitions. [2022-12-13 16:04:59,236 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4361198738170347 [2022-12-13 16:04:59,236 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1659 transitions. [2022-12-13 16:04:59,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1659 transitions. [2022-12-13 16:04:59,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:04:59,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1659 transitions. [2022-12-13 16:04:59,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 414.75) internal successors, (1659), 4 states have internal predecessors, (1659), 0 states have call successors, (0), 0 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 16:04:59,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 951.0) internal successors, (4755), 5 states have internal predecessors, (4755), 0 states have call successors, (0), 0 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 16:04:59,242 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 951.0) internal successors, (4755), 5 states have internal predecessors, (4755), 0 states have call successors, (0), 0 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 16:04:59,242 INFO L175 Difference]: Start difference. First operand has 104 places, 147 transitions, 1093 flow. Second operand 4 states and 1659 transitions. [2022-12-13 16:04:59,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 207 transitions, 1946 flow [2022-12-13 16:04:59,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 207 transitions, 1939 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 16:04:59,438 INFO L231 Difference]: Finished difference. Result has 104 places, 146 transitions, 1098 flow [2022-12-13 16:04:59,438 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=951, PETRI_DIFFERENCE_MINUEND_FLOW=1082, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1098, PETRI_PLACES=104, PETRI_TRANSITIONS=146} [2022-12-13 16:04:59,438 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, 46 predicate places. [2022-12-13 16:04:59,438 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 146 transitions, 1098 flow [2022-12-13 16:04:59,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 400.25) internal successors, (1601), 4 states have internal predecessors, (1601), 0 states have call successors, (0), 0 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 16:04:59,439 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:04:59,439 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:04:59,443 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 16:04:59,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 16:04:59,640 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-12-13 16:04:59,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:04:59,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1248600740, now seen corresponding path program 1 times [2022-12-13 16:04:59,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:04:59,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836221971] [2022-12-13 16:04:59,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:04:59,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:04:59,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:04:59,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:04:59,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:04:59,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836221971] [2022-12-13 16:04:59,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836221971] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:04:59,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843369895] [2022-12-13 16:04:59,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:04:59,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:04:59,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:04:59,711 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:04:59,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 16:04:59,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:04:59,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 16:04:59,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:04:59,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:04:59,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:04:59,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:04:59,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843369895] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:04:59,862 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:04:59,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 16:04:59,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285177129] [2022-12-13 16:04:59,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:04:59,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:04:59,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:04:59,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:04:59,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:04:59,881 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 398 out of 951 [2022-12-13 16:04:59,883 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 146 transitions, 1098 flow. Second operand has 7 states, 7 states have (on average 400.42857142857144) internal successors, (2803), 7 states have internal predecessors, (2803), 0 states have call successors, (0), 0 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 16:04:59,883 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:04:59,883 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 398 of 951 [2022-12-13 16:04:59,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:05:38,502 INFO L130 PetriNetUnfolder]: 201400/306561 cut-off events. [2022-12-13 16:05:38,502 INFO L131 PetriNetUnfolder]: For 107993/107993 co-relation queries the response was YES. [2022-12-13 16:05:39,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 817254 conditions, 306561 events. 201400/306561 cut-off events. For 107993/107993 co-relation queries the response was YES. Maximal size of possible extension queue 13533. Compared 3026072 event pairs, 162030 based on Foata normal form. 0/240362 useless extension candidates. Maximal degree in co-relation 817221. Up to 98341 conditions per place. [2022-12-13 16:05:40,663 INFO L137 encePairwiseOnDemand]: 948/951 looper letters, 383 selfloop transitions, 11 changer transitions 0/396 dead transitions. [2022-12-13 16:05:40,663 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 396 transitions, 3722 flow [2022-12-13 16:05:40,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 16:05:40,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 16:05:40,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2538 transitions. [2022-12-13 16:05:40,670 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.444794952681388 [2022-12-13 16:05:40,670 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2538 transitions. [2022-12-13 16:05:40,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2538 transitions. [2022-12-13 16:05:40,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:05:40,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2538 transitions. [2022-12-13 16:05:40,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 423.0) internal successors, (2538), 6 states have internal predecessors, (2538), 0 states have call successors, (0), 0 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 16:05:40,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 951.0) internal successors, (6657), 7 states have internal predecessors, (6657), 0 states have call successors, (0), 0 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 16:05:40,682 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 951.0) internal successors, (6657), 7 states have internal predecessors, (6657), 0 states have call successors, (0), 0 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 16:05:40,682 INFO L175 Difference]: Start difference. First operand has 104 places, 146 transitions, 1098 flow. Second operand 6 states and 2538 transitions. [2022-12-13 16:05:40,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 396 transitions, 3722 flow [2022-12-13 16:05:41,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 396 transitions, 3707 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 16:05:41,192 INFO L231 Difference]: Finished difference. Result has 110 places, 149 transitions, 1131 flow [2022-12-13 16:05:41,192 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=951, PETRI_DIFFERENCE_MINUEND_FLOW=1083, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1131, PETRI_PLACES=110, PETRI_TRANSITIONS=149} [2022-12-13 16:05:41,192 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, 52 predicate places. [2022-12-13 16:05:41,192 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 149 transitions, 1131 flow [2022-12-13 16:05:41,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 400.42857142857144) internal successors, (2803), 7 states have internal predecessors, (2803), 0 states have call successors, (0), 0 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 16:05:41,193 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:05:41,193 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:05:41,197 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 16:05:41,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-13 16:05:41,394 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-12-13 16:05:41,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:05:41,395 INFO L85 PathProgramCache]: Analyzing trace with hash 569327264, now seen corresponding path program 1 times [2022-12-13 16:05:41,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:05:41,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293990089] [2022-12-13 16:05:41,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:05:41,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:05:41,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:05:41,535 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 16:05:41,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:05:41,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293990089] [2022-12-13 16:05:41,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293990089] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:05:41,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:05:41,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:05:41,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57701096] [2022-12-13 16:05:41,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:05:41,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:05:41,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:05:41,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:05:41,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:05:41,618 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 383 out of 951 [2022-12-13 16:05:41,619 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 149 transitions, 1131 flow. Second operand has 4 states, 4 states have (on average 385.75) internal successors, (1543), 4 states have internal predecessors, (1543), 0 states have call successors, (0), 0 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 16:05:41,619 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:05:41,619 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 383 of 951 [2022-12-13 16:05:41,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:06:22,564 INFO L130 PetriNetUnfolder]: 213368/332269 cut-off events. [2022-12-13 16:06:22,564 INFO L131 PetriNetUnfolder]: For 125779/125779 co-relation queries the response was YES. [2022-12-13 16:06:24,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 876162 conditions, 332269 events. 213368/332269 cut-off events. For 125779/125779 co-relation queries the response was YES. Maximal size of possible extension queue 14685. Compared 3416842 event pairs, 173580 based on Foata normal form. 7920/274187 useless extension candidates. Maximal degree in co-relation 876126. Up to 305240 conditions per place. [2022-12-13 16:06:25,235 INFO L137 encePairwiseOnDemand]: 941/951 looper letters, 225 selfloop transitions, 39 changer transitions 24/290 dead transitions. [2022-12-13 16:06:25,235 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 290 transitions, 2763 flow [2022-12-13 16:06:25,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 16:06:25,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 16:06:25,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2007 transitions. [2022-12-13 16:06:25,239 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4220820189274448 [2022-12-13 16:06:25,239 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2007 transitions. [2022-12-13 16:06:25,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2007 transitions. [2022-12-13 16:06:25,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:06:25,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2007 transitions. [2022-12-13 16:06:25,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 401.4) internal successors, (2007), 5 states have internal predecessors, (2007), 0 states have call successors, (0), 0 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 16:06:25,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 951.0) internal successors, (5706), 6 states have internal predecessors, (5706), 0 states have call successors, (0), 0 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 16:06:25,246 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 951.0) internal successors, (5706), 6 states have internal predecessors, (5706), 0 states have call successors, (0), 0 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 16:06:25,246 INFO L175 Difference]: Start difference. First operand has 110 places, 149 transitions, 1131 flow. Second operand 5 states and 2007 transitions. [2022-12-13 16:06:25,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 290 transitions, 2763 flow [2022-12-13 16:06:26,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 290 transitions, 2723 flow, removed 9 selfloop flow, removed 1 redundant places. [2022-12-13 16:06:26,057 INFO L231 Difference]: Finished difference. Result has 115 places, 185 transitions, 1644 flow [2022-12-13 16:06:26,057 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=951, PETRI_DIFFERENCE_MINUEND_FLOW=1117, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1644, PETRI_PLACES=115, PETRI_TRANSITIONS=185} [2022-12-13 16:06:26,058 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, 57 predicate places. [2022-12-13 16:06:26,058 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 185 transitions, 1644 flow [2022-12-13 16:06:26,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 385.75) internal successors, (1543), 4 states have internal predecessors, (1543), 0 states have call successors, (0), 0 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 16:06:26,058 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:06:26,058 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:06:26,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 16:06:26,058 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-12-13 16:06:26,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:06:26,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1854035428, now seen corresponding path program 1 times [2022-12-13 16:06:26,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:06:26,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827221703] [2022-12-13 16:06:26,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:06:26,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:06:26,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:06:26,144 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 16:06:26,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:06:26,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827221703] [2022-12-13 16:06:26,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827221703] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:06:26,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043603322] [2022-12-13 16:06:26,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:06:26,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:06:26,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:06:26,146 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:06:26,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 16:06:26,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:06:26,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 16:06:26,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:06:26,293 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 16:06:26,293 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:06:26,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043603322] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:06:26,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:06:26,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-12-13 16:06:26,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173253386] [2022-12-13 16:06:26,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:06:26,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:06:26,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:06:26,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:06:26,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 16:06:26,353 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 383 out of 951 [2022-12-13 16:06:26,354 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 185 transitions, 1644 flow. Second operand has 4 states, 4 states have (on average 386.0) internal successors, (1544), 4 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 16:06:26,354 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:06:26,354 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 383 of 951 [2022-12-13 16:06:26,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:07:25,689 INFO L130 PetriNetUnfolder]: 298832/445495 cut-off events. [2022-12-13 16:07:25,689 INFO L131 PetriNetUnfolder]: For 399774/428934 co-relation queries the response was YES. [2022-12-13 16:07:27,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1229060 conditions, 445495 events. 298832/445495 cut-off events. For 399774/428934 co-relation queries the response was YES. Maximal size of possible extension queue 16720. Compared 4207080 event pairs, 189324 based on Foata normal form. 3780/333931 useless extension candidates. Maximal degree in co-relation 1229020. Up to 391664 conditions per place. [2022-12-13 16:07:28,984 INFO L137 encePairwiseOnDemand]: 945/951 looper letters, 194 selfloop transitions, 72 changer transitions 26/294 dead transitions. [2022-12-13 16:07:28,984 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 294 transitions, 3175 flow [2022-12-13 16:07:28,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 16:07:28,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 16:07:28,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1995 transitions. [2022-12-13 16:07:28,987 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4195583596214511 [2022-12-13 16:07:28,987 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1995 transitions. [2022-12-13 16:07:28,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1995 transitions. [2022-12-13 16:07:28,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:07:28,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1995 transitions. [2022-12-13 16:07:28,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 399.0) internal successors, (1995), 5 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:07:28,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 951.0) internal successors, (5706), 6 states have internal predecessors, (5706), 0 states have call successors, (0), 0 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 16:07:28,993 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 951.0) internal successors, (5706), 6 states have internal predecessors, (5706), 0 states have call successors, (0), 0 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 16:07:28,993 INFO L175 Difference]: Start difference. First operand has 115 places, 185 transitions, 1644 flow. Second operand 5 states and 1995 transitions. [2022-12-13 16:07:28,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 294 transitions, 3175 flow [2022-12-13 16:07:29,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 294 transitions, 3169 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-12-13 16:07:29,331 INFO L231 Difference]: Finished difference. Result has 121 places, 231 transitions, 2542 flow [2022-12-13 16:07:29,331 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=951, PETRI_DIFFERENCE_MINUEND_FLOW=1638, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2542, PETRI_PLACES=121, PETRI_TRANSITIONS=231} [2022-12-13 16:07:29,331 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, 63 predicate places. [2022-12-13 16:07:29,331 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 231 transitions, 2542 flow [2022-12-13 16:07:29,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 386.0) internal successors, (1544), 4 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 16:07:29,332 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:07:29,332 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1] [2022-12-13 16:07:29,336 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 16:07:29,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 16:07:29,533 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-12-13 16:07:29,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:07:29,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1434780766, now seen corresponding path program 2 times [2022-12-13 16:07:29,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:07:29,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859432818] [2022-12-13 16:07:29,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:07:29,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:07:29,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:07:29,711 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:07:29,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:07:29,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859432818] [2022-12-13 16:07:29,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859432818] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:07:29,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500633527] [2022-12-13 16:07:29,712 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 16:07:29,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:07:29,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:07:29,713 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:07:29,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 16:07:29,825 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 16:07:29,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:07:29,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 16:07:29,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:07:29,849 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 16:07:29,849 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:07:29,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500633527] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:07:29,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:07:29,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 14 [2022-12-13 16:07:29,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905543915] [2022-12-13 16:07:29,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:07:29,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:07:29,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:07:29,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:07:29,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2022-12-13 16:07:29,885 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 391 out of 951 [2022-12-13 16:07:29,886 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 231 transitions, 2542 flow. Second operand has 4 states, 4 states have (on average 392.0) internal successors, (1568), 4 states have internal predecessors, (1568), 0 states have call successors, (0), 0 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 16:07:29,886 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:07:29,886 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 391 of 951 [2022-12-13 16:07:29,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:08:33,185 INFO L130 PetriNetUnfolder]: 298832/445493 cut-off events. [2022-12-13 16:08:33,185 INFO L131 PetriNetUnfolder]: For 427108/456592 co-relation queries the response was YES. [2022-12-13 16:08:35,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1239928 conditions, 445493 events. 298832/445493 cut-off events. For 427108/456592 co-relation queries the response was YES. Maximal size of possible extension queue 16912. Compared 4215604 event pairs, 189324 based on Foata normal form. 2/329827 useless extension candidates. Maximal degree in co-relation 1239885. Up to 435296 conditions per place. [2022-12-13 16:08:36,596 INFO L137 encePairwiseOnDemand]: 948/951 looper letters, 206 selfloop transitions, 22 changer transitions 0/230 dead transitions. [2022-12-13 16:08:36,597 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 230 transitions, 2973 flow [2022-12-13 16:08:36,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:08:36,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 16:08:36,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1603 transitions. [2022-12-13 16:08:36,600 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4213985278654048 [2022-12-13 16:08:36,600 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1603 transitions. [2022-12-13 16:08:36,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1603 transitions. [2022-12-13 16:08:36,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:08:36,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1603 transitions. [2022-12-13 16:08:36,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 400.75) internal successors, (1603), 4 states have internal predecessors, (1603), 0 states have call successors, (0), 0 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 16:08:36,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 951.0) internal successors, (4755), 5 states have internal predecessors, (4755), 0 states have call successors, (0), 0 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 16:08:36,604 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 951.0) internal successors, (4755), 5 states have internal predecessors, (4755), 0 states have call successors, (0), 0 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 16:08:36,604 INFO L175 Difference]: Start difference. First operand has 121 places, 231 transitions, 2542 flow. Second operand 4 states and 1603 transitions. [2022-12-13 16:08:36,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 230 transitions, 2973 flow [2022-12-13 16:08:36,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 230 transitions, 2940 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-12-13 16:08:36,970 INFO L231 Difference]: Finished difference. Result has 122 places, 230 transitions, 2528 flow [2022-12-13 16:08:36,970 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=951, PETRI_DIFFERENCE_MINUEND_FLOW=2484, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2528, PETRI_PLACES=122, PETRI_TRANSITIONS=230} [2022-12-13 16:08:36,971 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, 64 predicate places. [2022-12-13 16:08:36,971 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 230 transitions, 2528 flow [2022-12-13 16:08:36,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 392.0) internal successors, (1568), 4 states have internal predecessors, (1568), 0 states have call successors, (0), 0 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 16:08:36,971 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:08:36,971 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:08:36,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-13 16:08:37,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 16:08:37,175 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-12-13 16:08:37,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:08:37,176 INFO L85 PathProgramCache]: Analyzing trace with hash 2036919011, now seen corresponding path program 1 times [2022-12-13 16:08:37,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:08:37,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915433844] [2022-12-13 16:08:37,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:08:37,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:08:37,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:08:37,300 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 16:08:37,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:08:37,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915433844] [2022-12-13 16:08:37,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915433844] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:08:37,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245249203] [2022-12-13 16:08:37,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:08:37,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:08:37,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:08:37,301 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:08:37,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 16:08:37,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:08:37,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 16:08:37,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:08:37,464 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 16:08:37,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:08:37,480 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 16:08:37,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245249203] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:08:37,480 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:08:37,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 2, 2] total 7 [2022-12-13 16:08:37,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071088793] [2022-12-13 16:08:37,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:08:37,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 16:08:37,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:08:37,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 16:08:37,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:08:37,610 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 371 out of 951 [2022-12-13 16:08:37,612 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 230 transitions, 2528 flow. Second operand has 8 states, 8 states have (on average 374.25) internal successors, (2994), 8 states have internal predecessors, (2994), 0 states have call successors, (0), 0 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 16:08:37,612 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:08:37,612 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 371 of 951 [2022-12-13 16:08:37,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:09:36,685 INFO L130 PetriNetUnfolder]: 267662/433649 cut-off events. [2022-12-13 16:09:36,685 INFO L131 PetriNetUnfolder]: For 496561/513031 co-relation queries the response was YES. [2022-12-13 16:09:39,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1193729 conditions, 433649 events. 267662/433649 cut-off events. For 496561/513031 co-relation queries the response was YES. Maximal size of possible extension queue 17692. Compared 4762745 event pairs, 134460 based on Foata normal form. 270/397439 useless extension candidates. Maximal degree in co-relation 1193685. Up to 174531 conditions per place. [2022-12-13 16:09:40,103 INFO L137 encePairwiseOnDemand]: 941/951 looper letters, 309 selfloop transitions, 38 changer transitions 19/368 dead transitions. [2022-12-13 16:09:40,103 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 368 transitions, 4414 flow [2022-12-13 16:09:40,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 16:09:40,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 16:09:40,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3450 transitions. [2022-12-13 16:09:40,108 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4030844724851034 [2022-12-13 16:09:40,108 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3450 transitions. [2022-12-13 16:09:40,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3450 transitions. [2022-12-13 16:09:40,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:09:40,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3450 transitions. [2022-12-13 16:09:40,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 383.3333333333333) internal successors, (3450), 9 states have internal predecessors, (3450), 0 states have call successors, (0), 0 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 16:09:40,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 951.0) internal successors, (9510), 10 states have internal predecessors, (9510), 0 states have call successors, (0), 0 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 16:09:40,117 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 951.0) internal successors, (9510), 10 states have internal predecessors, (9510), 0 states have call successors, (0), 0 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 16:09:40,117 INFO L175 Difference]: Start difference. First operand has 122 places, 230 transitions, 2528 flow. Second operand 9 states and 3450 transitions. [2022-12-13 16:09:40,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 368 transitions, 4414 flow [2022-12-13 16:09:40,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 368 transitions, 4391 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 16:09:40,456 INFO L231 Difference]: Finished difference. Result has 129 places, 232 transitions, 2668 flow [2022-12-13 16:09:40,456 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=951, PETRI_DIFFERENCE_MINUEND_FLOW=2493, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2668, PETRI_PLACES=129, PETRI_TRANSITIONS=232} [2022-12-13 16:09:40,456 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, 71 predicate places. [2022-12-13 16:09:40,456 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 232 transitions, 2668 flow [2022-12-13 16:09:40,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 374.25) internal successors, (2994), 8 states have internal predecessors, (2994), 0 states have call successors, (0), 0 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 16:09:40,457 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:09:40,457 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:09:40,461 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 16:09:40,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:09:40,658 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-12-13 16:09:40,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:09:40,660 INFO L85 PathProgramCache]: Analyzing trace with hash 2036919017, now seen corresponding path program 1 times [2022-12-13 16:09:40,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:09:40,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904446212] [2022-12-13 16:09:40,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:09:40,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:09:40,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:09:40,742 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 16:09:40,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:09:40,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904446212] [2022-12-13 16:09:40,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904446212] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:09:40,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917789043] [2022-12-13 16:09:40,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:09:40,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:09:40,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:09:40,744 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:09:40,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34995e30-154e-4fdc-b155-f1e6f384f32a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 16:09:40,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:09:40,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 16:09:40,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:09:40,887 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 16:09:40,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:09:40,902 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 16:09:40,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917789043] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:09:40,902 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:09:40,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-12-13 16:09:40,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945012563] [2022-12-13 16:09:40,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:09:40,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:09:40,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:09:40,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:09:40,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:09:40,915 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 400 out of 951 [2022-12-13 16:09:40,916 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 232 transitions, 2668 flow. Second operand has 7 states, 7 states have (on average 405.14285714285717) internal successors, (2836), 7 states have internal predecessors, (2836), 0 states have call successors, (0), 0 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 16:09:40,916 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:09:40,916 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 400 of 951 [2022-12-13 16:09:40,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand