./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/test-easy6.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ad41ad-d2dd-45f5-b18b-fd3ab269a086/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ad41ad-d2dd-45f5-b18b-fd3ab269a086/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_69ad41ad-d2dd-45f5-b18b-fd3ab269a086/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ad41ad-d2dd-45f5-b18b-fd3ab269a086/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/test-easy6.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ad41ad-d2dd-45f5-b18b-fd3ab269a086/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_69ad41ad-d2dd-45f5-b18b-fd3ab269a086/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 e29a676a5171b2e56cc2900cb5470509b7d8cacfca71c5e2d0aea36c369ff26e --- 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 21:11:34,475 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 21:11:34,476 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 21:11:34,488 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 21:11:34,488 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 21:11:34,489 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 21:11:34,490 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 21:11:34,491 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 21:11:34,492 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 21:11:34,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 21:11:34,493 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 21:11:34,494 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 21:11:34,494 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 21:11:34,494 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 21:11:34,495 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 21:11:34,496 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 21:11:34,496 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 21:11:34,497 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 21:11:34,498 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 21:11:34,499 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 21:11:34,500 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 21:11:34,501 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 21:11:34,501 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 21:11:34,502 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 21:11:34,504 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 21:11:34,504 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 21:11:34,504 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 21:11:34,505 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 21:11:34,505 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 21:11:34,506 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 21:11:34,506 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 21:11:34,507 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 21:11:34,507 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 21:11:34,507 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 21:11:34,508 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 21:11:34,508 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 21:11:34,509 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 21:11:34,509 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 21:11:34,509 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 21:11:34,510 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 21:11:34,510 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 21:11:34,511 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ad41ad-d2dd-45f5-b18b-fd3ab269a086/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 21:11:34,538 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 21:11:34,538 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 21:11:34,539 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 21:11:34,544 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 21:11:34,545 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 21:11:34,545 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 21:11:34,546 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 21:11:34,546 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 21:11:34,546 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 21:11:34,546 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 21:11:34,546 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 21:11:34,547 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 21:11:34,547 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 21:11:34,547 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 21:11:34,547 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 21:11:34,547 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 21:11:34,547 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 21:11:34,548 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 21:11:34,548 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 21:11:34,548 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 21:11:34,548 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 21:11:34,548 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 21:11:34,548 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 21:11:34,548 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 21:11:34,549 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 21:11:34,549 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 21:11:34,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:11:34,549 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 21:11:34,549 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 21:11:34,549 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 21:11:34,550 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 21:11:34,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 21:11:34,550 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 21:11:34,550 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 21:11:34,550 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 21:11:34,550 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 21:11:34,550 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 21:11:34,551 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_69ad41ad-d2dd-45f5-b18b-fd3ab269a086/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ad41ad-d2dd-45f5-b18b-fd3ab269a086/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e29a676a5171b2e56cc2900cb5470509b7d8cacfca71c5e2d0aea36c369ff26e [2022-12-13 21:11:34,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 21:11:34,762 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 21:11:34,764 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 21:11:34,765 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 21:11:34,766 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 21:11:34,767 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ad41ad-d2dd-45f5-b18b-fd3ab269a086/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/test-easy6.wvr.c [2022-12-13 21:11:37,330 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 21:11:37,465 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 21:11:37,465 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ad41ad-d2dd-45f5-b18b-fd3ab269a086/sv-benchmarks/c/weaver/test-easy6.wvr.c [2022-12-13 21:11:37,471 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ad41ad-d2dd-45f5-b18b-fd3ab269a086/bin/uautomizer-uyxdKDjOR8/data/69714d7b0/74f7901e9e1a4e29acefc6e47e811931/FLAG653ed2d70 [2022-12-13 21:11:37,481 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ad41ad-d2dd-45f5-b18b-fd3ab269a086/bin/uautomizer-uyxdKDjOR8/data/69714d7b0/74f7901e9e1a4e29acefc6e47e811931 [2022-12-13 21:11:37,483 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 21:11:37,484 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 21:11:37,485 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 21:11:37,485 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 21:11:37,488 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 21:11:37,488 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:11:37" (1/1) ... [2022-12-13 21:11:37,489 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12c38001 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:11:37, skipping insertion in model container [2022-12-13 21:11:37,489 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:11:37" (1/1) ... [2022-12-13 21:11:37,494 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 21:11:37,508 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:11:37,628 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:11:37,629 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:11:37,629 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:11:37,629 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:11:37,629 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:11:37,631 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:11:37,632 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:11:37,632 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:11:37,632 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:11:37,633 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:11:37,633 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:11:37,634 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:11:37,634 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:11:37,634 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:11:37,634 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:11:37,634 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:11:37,635 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:11:37,635 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:11:37,636 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:11:37,636 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:11:37,637 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:11:37,637 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:11:37,637 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:11:37,637 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:11:37,638 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:11:37,638 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:11:37,638 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:11:37,638 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:11:37,639 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:11:37,639 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:11:37,639 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:11:37,640 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:11:37,640 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:11:37,640 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:11:37,640 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:11:37,640 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:11:37,644 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_69ad41ad-d2dd-45f5-b18b-fd3ab269a086/sv-benchmarks/c/weaver/test-easy6.wvr.c[3046,3059] [2022-12-13 21:11:37,645 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:11:37,653 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 21:11:37,665 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:11:37,665 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:11:37,665 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:11:37,665 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:11:37,665 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:11:37,666 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:11:37,666 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:11:37,666 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:11:37,666 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:11:37,667 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:11:37,667 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:11:37,667 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:11:37,667 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:11:37,668 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:11:37,668 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:11:37,668 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:11:37,668 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:11:37,668 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:11:37,669 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:11:37,669 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:11:37,669 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:11:37,669 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:11:37,670 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:11:37,670 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:11:37,670 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:11:37,670 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:11:37,670 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:11:37,671 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:11:37,671 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:11:37,671 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:11:37,671 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:11:37,672 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:11:37,672 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:11:37,672 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:11:37,672 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:11:37,672 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:11:37,675 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_69ad41ad-d2dd-45f5-b18b-fd3ab269a086/sv-benchmarks/c/weaver/test-easy6.wvr.c[3046,3059] [2022-12-13 21:11:37,675 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:11:37,687 INFO L208 MainTranslator]: Completed translation [2022-12-13 21:11:37,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:11:37 WrapperNode [2022-12-13 21:11:37,687 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 21:11:37,688 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 21:11:37,688 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 21:11:37,688 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 21:11:37,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:11:37" (1/1) ... [2022-12-13 21:11:37,699 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:11:37" (1/1) ... [2022-12-13 21:11:37,713 INFO L138 Inliner]: procedures = 21, calls = 59, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 131 [2022-12-13 21:11:37,714 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 21:11:37,714 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 21:11:37,714 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 21:11:37,714 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 21:11:37,721 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:11:37" (1/1) ... [2022-12-13 21:11:37,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:11:37" (1/1) ... [2022-12-13 21:11:37,722 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:11:37" (1/1) ... [2022-12-13 21:11:37,722 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:11:37" (1/1) ... [2022-12-13 21:11:37,725 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:11:37" (1/1) ... [2022-12-13 21:11:37,727 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:11:37" (1/1) ... [2022-12-13 21:11:37,728 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:11:37" (1/1) ... [2022-12-13 21:11:37,728 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:11:37" (1/1) ... [2022-12-13 21:11:37,730 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 21:11:37,730 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 21:11:37,730 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 21:11:37,730 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 21:11:37,731 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:11:37" (1/1) ... [2022-12-13 21:11:37,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:11:37,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ad41ad-d2dd-45f5-b18b-fd3ab269a086/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:11:37,754 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ad41ad-d2dd-45f5-b18b-fd3ab269a086/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 21:11:37,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ad41ad-d2dd-45f5-b18b-fd3ab269a086/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 21:11:37,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 21:11:37,783 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 21:11:37,783 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 21:11:37,783 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 21:11:37,783 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 21:11:37,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 21:11:37,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 21:11:37,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 21:11:37,784 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 21:11:37,784 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 21:11:37,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 21:11:37,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 21:11:37,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 21:11:37,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 21:11:37,786 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 21:11:37,863 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 21:11:37,865 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 21:11:38,051 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 21:11:38,142 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 21:11:38,142 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 21:11:38,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:11:38 BoogieIcfgContainer [2022-12-13 21:11:38,145 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 21:11:38,148 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 21:11:38,148 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 21:11:38,152 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 21:11:38,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 09:11:37" (1/3) ... [2022-12-13 21:11:38,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ec8ac95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:11:38, skipping insertion in model container [2022-12-13 21:11:38,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:11:37" (2/3) ... [2022-12-13 21:11:38,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ec8ac95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:11:38, skipping insertion in model container [2022-12-13 21:11:38,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:11:38" (3/3) ... [2022-12-13 21:11:38,155 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy6.wvr.c [2022-12-13 21:11:38,163 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 21:11:38,174 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 21:11:38,175 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-12-13 21:11:38,175 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 21:11:38,219 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 21:11:38,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 90 transitions, 196 flow [2022-12-13 21:11:38,281 INFO L130 PetriNetUnfolder]: 1/88 cut-off events. [2022-12-13 21:11:38,281 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 21:11:38,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 88 events. 1/88 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 72 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2022-12-13 21:11:38,284 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 90 transitions, 196 flow [2022-12-13 21:11:38,287 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 69 transitions, 147 flow [2022-12-13 21:11:38,290 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 21:11:38,299 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 69 transitions, 147 flow [2022-12-13 21:11:38,301 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 69 transitions, 147 flow [2022-12-13 21:11:38,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 69 transitions, 147 flow [2022-12-13 21:11:38,316 INFO L130 PetriNetUnfolder]: 0/69 cut-off events. [2022-12-13 21:11:38,316 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 21:11:38,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 69 events. 0/69 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 70 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2022-12-13 21:11:38,317 INFO L119 LiptonReduction]: Number of co-enabled transitions 900 [2022-12-13 21:11:39,642 INFO L134 LiptonReduction]: Checked pairs total: 6424 [2022-12-13 21:11:39,642 INFO L136 LiptonReduction]: Total number of compositions: 44 [2022-12-13 21:11:39,653 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:11:39,657 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;@7a8107ea, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:11:39,658 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-12-13 21:11:39,660 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2022-12-13 21:11:39,660 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:11:39,660 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:11:39,660 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 21:11:39,661 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 21:11:39,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:11:39,664 INFO L85 PathProgramCache]: Analyzing trace with hash 11743593, now seen corresponding path program 1 times [2022-12-13 21:11:39,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:11:39,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036263452] [2022-12-13 21:11:39,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:11:39,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:11:39,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:11:39,816 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 21:11:39,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:11:39,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036263452] [2022-12-13 21:11:39,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036263452] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:11:39,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:11:39,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:11:39,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099651807] [2022-12-13 21:11:39,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:11:39,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:11:39,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:11:39,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:11:39,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:11:39,849 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 134 [2022-12-13 21:11:39,852 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 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 21:11:39,852 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:11:39,852 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 134 [2022-12-13 21:11:39,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:11:39,966 INFO L130 PetriNetUnfolder]: 271/555 cut-off events. [2022-12-13 21:11:39,966 INFO L131 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2022-12-13 21:11:39,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1083 conditions, 555 events. 271/555 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2948 event pairs, 115 based on Foata normal form. 9/479 useless extension candidates. Maximal degree in co-relation 983. Up to 309 conditions per place. [2022-12-13 21:11:39,971 INFO L137 encePairwiseOnDemand]: 129/134 looper letters, 32 selfloop transitions, 3 changer transitions 0/43 dead transitions. [2022-12-13 21:11:39,971 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 43 transitions, 168 flow [2022-12-13 21:11:39,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:11:39,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:11:39,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 247 transitions. [2022-12-13 21:11:39,984 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6144278606965174 [2022-12-13 21:11:39,985 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 247 transitions. [2022-12-13 21:11:39,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 247 transitions. [2022-12-13 21:11:39,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:11:39,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 247 transitions. [2022-12-13 21:11:39,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 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 21:11:39,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 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 21:11:39,995 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 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 21:11:39,997 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 75 flow. Second operand 3 states and 247 transitions. [2022-12-13 21:11:39,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 43 transitions, 168 flow [2022-12-13 21:11:40,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 43 transitions, 161 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 21:11:40,002 INFO L231 Difference]: Finished difference. Result has 40 places, 33 transitions, 83 flow [2022-12-13 21:11:40,004 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=83, PETRI_PLACES=40, PETRI_TRANSITIONS=33} [2022-12-13 21:11:40,007 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 0 predicate places. [2022-12-13 21:11:40,008 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 33 transitions, 83 flow [2022-12-13 21:11:40,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 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 21:11:40,008 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:11:40,008 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 21:11:40,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 21:11:40,009 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 21:11:40,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:11:40,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1597087518, now seen corresponding path program 1 times [2022-12-13 21:11:40,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:11:40,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674078520] [2022-12-13 21:11:40,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:11:40,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:11:40,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:11:40,085 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 21:11:40,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:11:40,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674078520] [2022-12-13 21:11:40,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674078520] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:11:40,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:11:40,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:11:40,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438804340] [2022-12-13 21:11:40,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:11:40,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:11:40,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:11:40,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:11:40,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:11:40,092 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 134 [2022-12-13 21:11:40,093 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 83 flow. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 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 21:11:40,093 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:11:40,093 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 134 [2022-12-13 21:11:40,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:11:40,172 INFO L130 PetriNetUnfolder]: 257/534 cut-off events. [2022-12-13 21:11:40,172 INFO L131 PetriNetUnfolder]: For 84/84 co-relation queries the response was YES. [2022-12-13 21:11:40,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1116 conditions, 534 events. 257/534 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2824 event pairs, 101 based on Foata normal form. 4/463 useless extension candidates. Maximal degree in co-relation 905. Up to 309 conditions per place. [2022-12-13 21:11:40,175 INFO L137 encePairwiseOnDemand]: 129/134 looper letters, 32 selfloop transitions, 3 changer transitions 0/43 dead transitions. [2022-12-13 21:11:40,175 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 43 transitions, 181 flow [2022-12-13 21:11:40,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:11:40,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:11:40,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 247 transitions. [2022-12-13 21:11:40,178 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6144278606965174 [2022-12-13 21:11:40,178 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 247 transitions. [2022-12-13 21:11:40,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 247 transitions. [2022-12-13 21:11:40,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:11:40,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 247 transitions. [2022-12-13 21:11:40,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 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 21:11:40,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 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 21:11:40,181 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 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 21:11:40,181 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 83 flow. Second operand 3 states and 247 transitions. [2022-12-13 21:11:40,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 43 transitions, 181 flow [2022-12-13 21:11:40,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 43 transitions, 171 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 21:11:40,182 INFO L231 Difference]: Finished difference. Result has 41 places, 33 transitions, 90 flow [2022-12-13 21:11:40,182 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=41, PETRI_TRANSITIONS=33} [2022-12-13 21:11:40,183 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2022-12-13 21:11:40,183 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 33 transitions, 90 flow [2022-12-13 21:11:40,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 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 21:11:40,183 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:11:40,183 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:11:40,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 21:11:40,183 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 21:11:40,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:11:40,184 INFO L85 PathProgramCache]: Analyzing trace with hash 812478337, now seen corresponding path program 1 times [2022-12-13 21:11:40,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:11:40,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823441776] [2022-12-13 21:11:40,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:11:40,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:11:40,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:11:40,249 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 21:11:40,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:11:40,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823441776] [2022-12-13 21:11:40,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823441776] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:11:40,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:11:40,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:11:40,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275066674] [2022-12-13 21:11:40,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:11:40,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:11:40,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:11:40,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:11:40,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:11:40,263 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 134 [2022-12-13 21:11:40,264 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 33 transitions, 90 flow. Second operand has 5 states, 5 states have (on average 66.4) internal successors, (332), 5 states have internal predecessors, (332), 0 states have call successors, (0), 0 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 21:11:40,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:11:40,265 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 134 [2022-12-13 21:11:40,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:11:40,443 INFO L130 PetriNetUnfolder]: 414/846 cut-off events. [2022-12-13 21:11:40,443 INFO L131 PetriNetUnfolder]: For 126/126 co-relation queries the response was YES. [2022-12-13 21:11:40,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1788 conditions, 846 events. 414/846 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4624 event pairs, 26 based on Foata normal form. 0/754 useless extension candidates. Maximal degree in co-relation 851. Up to 303 conditions per place. [2022-12-13 21:11:40,448 INFO L137 encePairwiseOnDemand]: 125/134 looper letters, 56 selfloop transitions, 13 changer transitions 4/80 dead transitions. [2022-12-13 21:11:40,448 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 80 transitions, 354 flow [2022-12-13 21:11:40,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:11:40,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:11:40,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 529 transitions. [2022-12-13 21:11:40,451 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5639658848614072 [2022-12-13 21:11:40,451 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 529 transitions. [2022-12-13 21:11:40,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 529 transitions. [2022-12-13 21:11:40,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:11:40,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 529 transitions. [2022-12-13 21:11:40,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 75.57142857142857) internal successors, (529), 7 states have internal predecessors, (529), 0 states have call successors, (0), 0 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 21:11:40,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 134.0) internal successors, (1072), 8 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:11:40,456 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 134.0) internal successors, (1072), 8 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:11:40,457 INFO L175 Difference]: Start difference. First operand has 41 places, 33 transitions, 90 flow. Second operand 7 states and 529 transitions. [2022-12-13 21:11:40,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 80 transitions, 354 flow [2022-12-13 21:11:40,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 80 transitions, 336 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 21:11:40,459 INFO L231 Difference]: Finished difference. Result has 46 places, 40 transitions, 149 flow [2022-12-13 21:11:40,459 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=149, PETRI_PLACES=46, PETRI_TRANSITIONS=40} [2022-12-13 21:11:40,460 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 6 predicate places. [2022-12-13 21:11:40,460 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 40 transitions, 149 flow [2022-12-13 21:11:40,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 66.4) internal successors, (332), 5 states have internal predecessors, (332), 0 states have call successors, (0), 0 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 21:11:40,461 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:11:40,461 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:11:40,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 21:11:40,461 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 21:11:40,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:11:40,462 INFO L85 PathProgramCache]: Analyzing trace with hash -2128324822, now seen corresponding path program 1 times [2022-12-13 21:11:40,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:11:40,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584618606] [2022-12-13 21:11:40,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:11:40,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:11:40,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:11:40,523 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 21:11:40,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:11:40,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584618606] [2022-12-13 21:11:40,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584618606] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:11:40,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:11:40,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:11:40,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394515784] [2022-12-13 21:11:40,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:11:40,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:11:40,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:11:40,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:11:40,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:11:40,536 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 134 [2022-12-13 21:11:40,536 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 40 transitions, 149 flow. Second operand has 5 states, 5 states have (on average 66.4) internal successors, (332), 5 states have internal predecessors, (332), 0 states have call successors, (0), 0 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 21:11:40,536 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:11:40,537 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 134 [2022-12-13 21:11:40,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:11:40,693 INFO L130 PetriNetUnfolder]: 395/809 cut-off events. [2022-12-13 21:11:40,693 INFO L131 PetriNetUnfolder]: For 294/302 co-relation queries the response was YES. [2022-12-13 21:11:40,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1890 conditions, 809 events. 395/809 cut-off events. For 294/302 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4349 event pairs, 39 based on Foata normal form. 12/731 useless extension candidates. Maximal degree in co-relation 965. Up to 270 conditions per place. [2022-12-13 21:11:40,698 INFO L137 encePairwiseOnDemand]: 125/134 looper letters, 54 selfloop transitions, 13 changer transitions 3/77 dead transitions. [2022-12-13 21:11:40,698 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 77 transitions, 372 flow [2022-12-13 21:11:40,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:11:40,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:11:40,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 524 transitions. [2022-12-13 21:11:40,700 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.55863539445629 [2022-12-13 21:11:40,701 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 524 transitions. [2022-12-13 21:11:40,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 524 transitions. [2022-12-13 21:11:40,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:11:40,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 524 transitions. [2022-12-13 21:11:40,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 74.85714285714286) internal successors, (524), 7 states have internal predecessors, (524), 0 states have call successors, (0), 0 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 21:11:40,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 134.0) internal successors, (1072), 8 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:11:40,705 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 134.0) internal successors, (1072), 8 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:11:40,705 INFO L175 Difference]: Start difference. First operand has 46 places, 40 transitions, 149 flow. Second operand 7 states and 524 transitions. [2022-12-13 21:11:40,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 77 transitions, 372 flow [2022-12-13 21:11:40,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 77 transitions, 353 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-12-13 21:11:40,709 INFO L231 Difference]: Finished difference. Result has 49 places, 41 transitions, 164 flow [2022-12-13 21:11:40,709 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=164, PETRI_PLACES=49, PETRI_TRANSITIONS=41} [2022-12-13 21:11:40,710 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 9 predicate places. [2022-12-13 21:11:40,710 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 41 transitions, 164 flow [2022-12-13 21:11:40,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 66.4) internal successors, (332), 5 states have internal predecessors, (332), 0 states have call successors, (0), 0 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 21:11:40,710 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:11:40,710 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:11:40,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 21:11:40,711 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 21:11:40,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:11:40,711 INFO L85 PathProgramCache]: Analyzing trace with hash 812972179, now seen corresponding path program 1 times [2022-12-13 21:11:40,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:11:40,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178137467] [2022-12-13 21:11:40,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:11:40,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:11:40,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:11:40,776 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 21:11:40,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:11:40,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178137467] [2022-12-13 21:11:40,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178137467] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:11:40,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:11:40,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:11:40,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770225652] [2022-12-13 21:11:40,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:11:40,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:11:40,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:11:40,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:11:40,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:11:40,787 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 134 [2022-12-13 21:11:40,788 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 41 transitions, 164 flow. Second operand has 5 states, 5 states have (on average 66.4) internal successors, (332), 5 states have internal predecessors, (332), 0 states have call successors, (0), 0 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 21:11:40,788 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:11:40,788 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 134 [2022-12-13 21:11:40,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:11:40,953 INFO L130 PetriNetUnfolder]: 534/1099 cut-off events. [2022-12-13 21:11:40,953 INFO L131 PetriNetUnfolder]: For 430/440 co-relation queries the response was YES. [2022-12-13 21:11:40,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2500 conditions, 1099 events. 534/1099 cut-off events. For 430/440 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6468 event pairs, 50 based on Foata normal form. 10/999 useless extension candidates. Maximal degree in co-relation 2250. Up to 348 conditions per place. [2022-12-13 21:11:40,960 INFO L137 encePairwiseOnDemand]: 127/134 looper letters, 56 selfloop transitions, 17 changer transitions 2/83 dead transitions. [2022-12-13 21:11:40,960 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 83 transitions, 423 flow [2022-12-13 21:11:40,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:11:40,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:11:40,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 525 transitions. [2022-12-13 21:11:40,962 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5597014925373134 [2022-12-13 21:11:40,962 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 525 transitions. [2022-12-13 21:11:40,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 525 transitions. [2022-12-13 21:11:40,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:11:40,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 525 transitions. [2022-12-13 21:11:40,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 75.0) internal successors, (525), 7 states have internal predecessors, (525), 0 states have call successors, (0), 0 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 21:11:40,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 134.0) internal successors, (1072), 8 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:11:40,964 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 134.0) internal successors, (1072), 8 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:11:40,964 INFO L175 Difference]: Start difference. First operand has 49 places, 41 transitions, 164 flow. Second operand 7 states and 525 transitions. [2022-12-13 21:11:40,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 83 transitions, 423 flow [2022-12-13 21:11:40,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 83 transitions, 381 flow, removed 5 selfloop flow, removed 4 redundant places. [2022-12-13 21:11:40,967 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 213 flow [2022-12-13 21:11:40,967 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=213, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2022-12-13 21:11:40,968 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 13 predicate places. [2022-12-13 21:11:40,968 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 213 flow [2022-12-13 21:11:40,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 66.4) internal successors, (332), 5 states have internal predecessors, (332), 0 states have call successors, (0), 0 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 21:11:40,968 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:11:40,968 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:11:40,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 21:11:40,968 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 21:11:40,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:11:40,969 INFO L85 PathProgramCache]: Analyzing trace with hash 812972180, now seen corresponding path program 1 times [2022-12-13 21:11:40,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:11:40,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000257802] [2022-12-13 21:11:40,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:11:40,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:11:40,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:11:41,009 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 21:11:41,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:11:41,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000257802] [2022-12-13 21:11:41,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000257802] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:11:41,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:11:41,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:11:41,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811503216] [2022-12-13 21:11:41,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:11:41,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:11:41,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:11:41,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:11:41,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:11:41,022 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 134 [2022-12-13 21:11:41,022 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 213 flow. Second operand has 5 states, 5 states have (on average 66.4) internal successors, (332), 5 states have internal predecessors, (332), 0 states have call successors, (0), 0 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 21:11:41,023 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:11:41,023 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 134 [2022-12-13 21:11:41,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:11:41,198 INFO L130 PetriNetUnfolder]: 513/1056 cut-off events. [2022-12-13 21:11:41,198 INFO L131 PetriNetUnfolder]: For 714/724 co-relation queries the response was YES. [2022-12-13 21:11:41,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2526 conditions, 1056 events. 513/1056 cut-off events. For 714/724 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6175 event pairs, 147 based on Foata normal form. 22/970 useless extension candidates. Maximal degree in co-relation 2268. Up to 468 conditions per place. [2022-12-13 21:11:41,203 INFO L137 encePairwiseOnDemand]: 127/134 looper letters, 58 selfloop transitions, 14 changer transitions 1/81 dead transitions. [2022-12-13 21:11:41,204 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 81 transitions, 430 flow [2022-12-13 21:11:41,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:11:41,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:11:41,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 522 transitions. [2022-12-13 21:11:41,206 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5565031982942431 [2022-12-13 21:11:41,206 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 522 transitions. [2022-12-13 21:11:41,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 522 transitions. [2022-12-13 21:11:41,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:11:41,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 522 transitions. [2022-12-13 21:11:41,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 74.57142857142857) internal successors, (522), 7 states have internal predecessors, (522), 0 states have call successors, (0), 0 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 21:11:41,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 134.0) internal successors, (1072), 8 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:11:41,210 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 134.0) internal successors, (1072), 8 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:11:41,210 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 213 flow. Second operand 7 states and 522 transitions. [2022-12-13 21:11:41,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 81 transitions, 430 flow [2022-12-13 21:11:41,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 81 transitions, 430 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 21:11:41,214 INFO L231 Difference]: Finished difference. Result has 58 places, 45 transitions, 236 flow [2022-12-13 21:11:41,214 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=236, PETRI_PLACES=58, PETRI_TRANSITIONS=45} [2022-12-13 21:11:41,214 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 18 predicate places. [2022-12-13 21:11:41,214 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 45 transitions, 236 flow [2022-12-13 21:11:41,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 66.4) internal successors, (332), 5 states have internal predecessors, (332), 0 states have call successors, (0), 0 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 21:11:41,215 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:11:41,215 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:11:41,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 21:11:41,215 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 21:11:41,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:11:41,216 INFO L85 PathProgramCache]: Analyzing trace with hash 2100299586, now seen corresponding path program 1 times [2022-12-13 21:11:41,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:11:41,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806282778] [2022-12-13 21:11:41,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:11:41,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:11:41,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:11:41,250 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 21:11:41,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:11:41,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806282778] [2022-12-13 21:11:41,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806282778] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:11:41,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:11:41,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:11:41,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692132081] [2022-12-13 21:11:41,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:11:41,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:11:41,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:11:41,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:11:41,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:11:41,257 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 134 [2022-12-13 21:11:41,257 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 45 transitions, 236 flow. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 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 21:11:41,257 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:11:41,257 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 134 [2022-12-13 21:11:41,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:11:41,336 INFO L130 PetriNetUnfolder]: 321/684 cut-off events. [2022-12-13 21:11:41,336 INFO L131 PetriNetUnfolder]: For 916/924 co-relation queries the response was YES. [2022-12-13 21:11:41,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1861 conditions, 684 events. 321/684 cut-off events. For 916/924 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3713 event pairs, 135 based on Foata normal form. 54/689 useless extension candidates. Maximal degree in co-relation 1211. Up to 445 conditions per place. [2022-12-13 21:11:41,339 INFO L137 encePairwiseOnDemand]: 127/134 looper letters, 45 selfloop transitions, 3 changer transitions 2/60 dead transitions. [2022-12-13 21:11:41,339 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 60 transitions, 409 flow [2022-12-13 21:11:41,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:11:41,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:11:41,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 249 transitions. [2022-12-13 21:11:41,340 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6194029850746269 [2022-12-13 21:11:41,340 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 249 transitions. [2022-12-13 21:11:41,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 249 transitions. [2022-12-13 21:11:41,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:11:41,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 249 transitions. [2022-12-13 21:11:41,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 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 21:11:41,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 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 21:11:41,342 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 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 21:11:41,342 INFO L175 Difference]: Start difference. First operand has 58 places, 45 transitions, 236 flow. Second operand 3 states and 249 transitions. [2022-12-13 21:11:41,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 60 transitions, 409 flow [2022-12-13 21:11:41,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 60 transitions, 356 flow, removed 4 selfloop flow, removed 5 redundant places. [2022-12-13 21:11:41,344 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 213 flow [2022-12-13 21:11:41,345 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=213, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2022-12-13 21:11:41,345 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 16 predicate places. [2022-12-13 21:11:41,345 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 213 flow [2022-12-13 21:11:41,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 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 21:11:41,345 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:11:41,345 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:11:41,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 21:11:41,346 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 21:11:41,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:11:41,346 INFO L85 PathProgramCache]: Analyzing trace with hash 2051494261, now seen corresponding path program 1 times [2022-12-13 21:11:41,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:11:41,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596666722] [2022-12-13 21:11:41,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:11:41,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:11:41,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:11:41,403 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 21:11:41,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:11:41,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596666722] [2022-12-13 21:11:41,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596666722] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:11:41,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:11:41,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:11:41,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461186152] [2022-12-13 21:11:41,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:11:41,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:11:41,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:11:41,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:11:41,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:11:41,414 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 134 [2022-12-13 21:11:41,414 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 213 flow. Second operand has 5 states, 5 states have (on average 70.6) internal successors, (353), 5 states have internal predecessors, (353), 0 states have call successors, (0), 0 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 21:11:41,414 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:11:41,415 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 134 [2022-12-13 21:11:41,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:11:41,513 INFO L130 PetriNetUnfolder]: 308/659 cut-off events. [2022-12-13 21:11:41,513 INFO L131 PetriNetUnfolder]: For 505/521 co-relation queries the response was YES. [2022-12-13 21:11:41,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1774 conditions, 659 events. 308/659 cut-off events. For 505/521 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3626 event pairs, 126 based on Foata normal form. 16/644 useless extension candidates. Maximal degree in co-relation 1127. Up to 229 conditions per place. [2022-12-13 21:11:41,516 INFO L137 encePairwiseOnDemand]: 127/134 looper letters, 52 selfloop transitions, 5 changer transitions 1/67 dead transitions. [2022-12-13 21:11:41,517 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 67 transitions, 431 flow [2022-12-13 21:11:41,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 21:11:41,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 21:11:41,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 445 transitions. [2022-12-13 21:11:41,518 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5534825870646766 [2022-12-13 21:11:41,518 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 445 transitions. [2022-12-13 21:11:41,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 445 transitions. [2022-12-13 21:11:41,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:11:41,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 445 transitions. [2022-12-13 21:11:41,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 74.16666666666667) internal successors, (445), 6 states have internal predecessors, (445), 0 states have call successors, (0), 0 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 21:11:41,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 134.0) internal successors, (938), 7 states have internal predecessors, (938), 0 states have call successors, (0), 0 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 21:11:41,520 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 134.0) internal successors, (938), 7 states have internal predecessors, (938), 0 states have call successors, (0), 0 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 21:11:41,520 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 213 flow. Second operand 6 states and 445 transitions. [2022-12-13 21:11:41,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 67 transitions, 431 flow [2022-12-13 21:11:41,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 67 transitions, 428 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:11:41,522 INFO L231 Difference]: Finished difference. Result has 60 places, 44 transitions, 221 flow [2022-12-13 21:11:41,522 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=221, PETRI_PLACES=60, PETRI_TRANSITIONS=44} [2022-12-13 21:11:41,523 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 20 predicate places. [2022-12-13 21:11:41,523 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 44 transitions, 221 flow [2022-12-13 21:11:41,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 70.6) internal successors, (353), 5 states have internal predecessors, (353), 0 states have call successors, (0), 0 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 21:11:41,523 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:11:41,523 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:11:41,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 21:11:41,523 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 21:11:41,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:11:41,523 INFO L85 PathProgramCache]: Analyzing trace with hash 534486458, now seen corresponding path program 1 times [2022-12-13 21:11:41,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:11:41,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791267332] [2022-12-13 21:11:41,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:11:41,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:11:41,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:11:41,572 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 21:11:41,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:11:41,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791267332] [2022-12-13 21:11:41,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791267332] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:11:41,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:11:41,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:11:41,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854692669] [2022-12-13 21:11:41,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:11:41,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:11:41,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:11:41,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:11:41,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:11:41,584 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 134 [2022-12-13 21:11:41,584 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 44 transitions, 221 flow. Second operand has 5 states, 5 states have (on average 70.6) internal successors, (353), 5 states have internal predecessors, (353), 0 states have call successors, (0), 0 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 21:11:41,585 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:11:41,585 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 134 [2022-12-13 21:11:41,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:11:41,670 INFO L130 PetriNetUnfolder]: 278/599 cut-off events. [2022-12-13 21:11:41,670 INFO L131 PetriNetUnfolder]: For 638/654 co-relation queries the response was YES. [2022-12-13 21:11:41,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1682 conditions, 599 events. 278/599 cut-off events. For 638/654 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3310 event pairs, 114 based on Foata normal form. 34/602 useless extension candidates. Maximal degree in co-relation 1063. Up to 229 conditions per place. [2022-12-13 21:11:41,672 INFO L137 encePairwiseOnDemand]: 128/134 looper letters, 34 selfloop transitions, 4 changer transitions 18/65 dead transitions. [2022-12-13 21:11:41,672 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 65 transitions, 433 flow [2022-12-13 21:11:41,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 21:11:41,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 21:11:41,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 443 transitions. [2022-12-13 21:11:41,673 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5509950248756219 [2022-12-13 21:11:41,673 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 443 transitions. [2022-12-13 21:11:41,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 443 transitions. [2022-12-13 21:11:41,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:11:41,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 443 transitions. [2022-12-13 21:11:41,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 73.83333333333333) internal successors, (443), 6 states have internal predecessors, (443), 0 states have call successors, (0), 0 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 21:11:41,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 134.0) internal successors, (938), 7 states have internal predecessors, (938), 0 states have call successors, (0), 0 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 21:11:41,675 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 134.0) internal successors, (938), 7 states have internal predecessors, (938), 0 states have call successors, (0), 0 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 21:11:41,676 INFO L175 Difference]: Start difference. First operand has 60 places, 44 transitions, 221 flow. Second operand 6 states and 443 transitions. [2022-12-13 21:11:41,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 65 transitions, 433 flow [2022-12-13 21:11:41,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 65 transitions, 421 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-12-13 21:11:41,678 INFO L231 Difference]: Finished difference. Result has 61 places, 33 transitions, 158 flow [2022-12-13 21:11:41,678 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=158, PETRI_PLACES=61, PETRI_TRANSITIONS=33} [2022-12-13 21:11:41,678 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 21 predicate places. [2022-12-13 21:11:41,678 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 33 transitions, 158 flow [2022-12-13 21:11:41,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 70.6) internal successors, (353), 5 states have internal predecessors, (353), 0 states have call successors, (0), 0 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 21:11:41,679 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:11:41,679 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:11:41,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 21:11:41,679 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 21:11:41,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:11:41,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1736676232, now seen corresponding path program 1 times [2022-12-13 21:11:41,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:11:41,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180643883] [2022-12-13 21:11:41,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:11:41,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:11:41,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:11:41,727 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 21:11:41,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:11:41,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180643883] [2022-12-13 21:11:41,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180643883] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:11:41,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:11:41,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:11:41,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313732864] [2022-12-13 21:11:41,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:11:41,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:11:41,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:11:41,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:11:41,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:11:41,739 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 134 [2022-12-13 21:11:41,739 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 33 transitions, 158 flow. Second operand has 5 states, 5 states have (on average 70.6) internal successors, (353), 5 states have internal predecessors, (353), 0 states have call successors, (0), 0 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 21:11:41,739 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:11:41,740 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 134 [2022-12-13 21:11:41,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:11:41,799 INFO L130 PetriNetUnfolder]: 182/375 cut-off events. [2022-12-13 21:11:41,799 INFO L131 PetriNetUnfolder]: For 326/334 co-relation queries the response was YES. [2022-12-13 21:11:41,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1017 conditions, 375 events. 182/375 cut-off events. For 326/334 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1756 event pairs, 114 based on Foata normal form. 8/365 useless extension candidates. Maximal degree in co-relation 711. Up to 225 conditions per place. [2022-12-13 21:11:41,801 INFO L137 encePairwiseOnDemand]: 131/134 looper letters, 28 selfloop transitions, 2 changer transitions 0/38 dead transitions. [2022-12-13 21:11:41,801 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 38 transitions, 238 flow [2022-12-13 21:11:41,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:11:41,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 21:11:41,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 292 transitions. [2022-12-13 21:11:41,802 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5447761194029851 [2022-12-13 21:11:41,802 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 292 transitions. [2022-12-13 21:11:41,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 292 transitions. [2022-12-13 21:11:41,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:11:41,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 292 transitions. [2022-12-13 21:11:41,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 0 states have call successors, (0), 0 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 21:11:41,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 134.0) internal successors, (670), 5 states have internal predecessors, (670), 0 states have call successors, (0), 0 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 21:11:41,808 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 134.0) internal successors, (670), 5 states have internal predecessors, (670), 0 states have call successors, (0), 0 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 21:11:41,809 INFO L175 Difference]: Start difference. First operand has 61 places, 33 transitions, 158 flow. Second operand 4 states and 292 transitions. [2022-12-13 21:11:41,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 38 transitions, 238 flow [2022-12-13 21:11:41,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 38 transitions, 214 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-12-13 21:11:41,810 INFO L231 Difference]: Finished difference. Result has 45 places, 32 transitions, 135 flow [2022-12-13 21:11:41,810 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=135, PETRI_PLACES=45, PETRI_TRANSITIONS=32} [2022-12-13 21:11:41,810 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 5 predicate places. [2022-12-13 21:11:41,811 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 32 transitions, 135 flow [2022-12-13 21:11:41,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 70.6) internal successors, (353), 5 states have internal predecessors, (353), 0 states have call successors, (0), 0 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 21:11:41,811 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:11:41,811 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:11:41,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 21:11:41,811 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 21:11:41,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:11:41,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1736676233, now seen corresponding path program 1 times [2022-12-13 21:11:41,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:11:41,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434939993] [2022-12-13 21:11:41,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:11:41,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:11:41,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:11:41,857 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 21:11:41,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:11:41,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434939993] [2022-12-13 21:11:41,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434939993] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:11:41,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:11:41,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:11:41,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748853596] [2022-12-13 21:11:41,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:11:41,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:11:41,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:11:41,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:11:41,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:11:41,866 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 134 [2022-12-13 21:11:41,867 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 32 transitions, 135 flow. Second operand has 5 states, 5 states have (on average 70.6) internal successors, (353), 5 states have internal predecessors, (353), 0 states have call successors, (0), 0 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 21:11:41,867 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:11:41,867 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 134 [2022-12-13 21:11:41,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:11:41,914 INFO L130 PetriNetUnfolder]: 170/351 cut-off events. [2022-12-13 21:11:41,914 INFO L131 PetriNetUnfolder]: For 124/132 co-relation queries the response was YES. [2022-12-13 21:11:41,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 906 conditions, 351 events. 170/351 cut-off events. For 124/132 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1670 event pairs, 108 based on Foata normal form. 20/353 useless extension candidates. Maximal degree in co-relation 635. Up to 225 conditions per place. [2022-12-13 21:11:41,915 INFO L137 encePairwiseOnDemand]: 131/134 looper letters, 0 selfloop transitions, 0 changer transitions 37/37 dead transitions. [2022-12-13 21:11:41,915 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 37 transitions, 212 flow [2022-12-13 21:11:41,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:11:41,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 21:11:41,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 291 transitions. [2022-12-13 21:11:41,916 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.542910447761194 [2022-12-13 21:11:41,916 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 291 transitions. [2022-12-13 21:11:41,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 291 transitions. [2022-12-13 21:11:41,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:11:41,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 291 transitions. [2022-12-13 21:11:41,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 0 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 21:11:41,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 134.0) internal successors, (670), 5 states have internal predecessors, (670), 0 states have call successors, (0), 0 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 21:11:41,918 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 134.0) internal successors, (670), 5 states have internal predecessors, (670), 0 states have call successors, (0), 0 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 21:11:41,918 INFO L175 Difference]: Start difference. First operand has 45 places, 32 transitions, 135 flow. Second operand 4 states and 291 transitions. [2022-12-13 21:11:41,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 37 transitions, 212 flow [2022-12-13 21:11:41,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 37 transitions, 209 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 21:11:41,919 INFO L231 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2022-12-13 21:11:41,919 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2022-12-13 21:11:41,919 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 4 predicate places. [2022-12-13 21:11:41,919 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2022-12-13 21:11:41,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 70.6) internal successors, (353), 5 states have internal predecessors, (353), 0 states have call successors, (0), 0 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 21:11:41,922 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2022-12-13 21:11:41,922 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2022-12-13 21:11:41,922 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2022-12-13 21:11:41,922 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2022-12-13 21:11:41,922 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2022-12-13 21:11:41,922 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2022-12-13 21:11:41,922 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2022-12-13 21:11:41,922 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2022-12-13 21:11:41,923 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 18 remaining) [2022-12-13 21:11:41,923 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2022-12-13 21:11:41,923 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2022-12-13 21:11:41,923 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2022-12-13 21:11:41,923 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2022-12-13 21:11:41,923 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2022-12-13 21:11:41,923 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2022-12-13 21:11:41,923 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2022-12-13 21:11:41,923 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2022-12-13 21:11:41,923 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2022-12-13 21:11:41,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 21:11:41,924 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:11:41,928 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 21:11:41,928 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 21:11:41,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 09:11:41 BasicIcfg [2022-12-13 21:11:41,930 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 21:11:41,930 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 21:11:41,930 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 21:11:41,931 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 21:11:41,931 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:11:38" (3/4) ... [2022-12-13 21:11:41,933 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 21:11:41,937 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-12-13 21:11:41,937 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-12-13 21:11:41,940 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2022-12-13 21:11:41,940 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 21:11:41,940 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 21:11:41,940 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 21:11:41,961 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ad41ad-d2dd-45f5-b18b-fd3ab269a086/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 21:11:41,961 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 21:11:41,961 INFO L158 Benchmark]: Toolchain (without parser) took 4477.17ms. Allocated memory was 117.4MB in the beginning and 159.4MB in the end (delta: 41.9MB). Free memory was 78.0MB in the beginning and 91.0MB in the end (delta: -13.0MB). Peak memory consumption was 29.9MB. Max. memory is 16.1GB. [2022-12-13 21:11:41,961 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 117.4MB. Free memory is still 88.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 21:11:41,961 INFO L158 Benchmark]: CACSL2BoogieTranslator took 202.38ms. Allocated memory is still 117.4MB. Free memory was 77.6MB in the beginning and 62.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-13 21:11:41,962 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.09ms. Allocated memory is still 117.4MB. Free memory was 62.9MB in the beginning and 61.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 21:11:41,962 INFO L158 Benchmark]: Boogie Preprocessor took 15.59ms. Allocated memory is still 117.4MB. Free memory was 61.2MB in the beginning and 59.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 21:11:41,962 INFO L158 Benchmark]: RCFGBuilder took 414.81ms. Allocated memory was 117.4MB in the beginning and 159.4MB in the end (delta: 41.9MB). Free memory was 59.8MB in the beginning and 128.6MB in the end (delta: -68.8MB). Peak memory consumption was 19.8MB. Max. memory is 16.1GB. [2022-12-13 21:11:41,962 INFO L158 Benchmark]: TraceAbstraction took 3782.25ms. Allocated memory is still 159.4MB. Free memory was 127.8MB in the beginning and 94.2MB in the end (delta: 33.6MB). Peak memory consumption was 33.2MB. Max. memory is 16.1GB. [2022-12-13 21:11:41,962 INFO L158 Benchmark]: Witness Printer took 30.29ms. Allocated memory is still 159.4MB. Free memory was 94.2MB in the beginning and 91.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 21:11:41,963 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 117.4MB. Free memory is still 88.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 202.38ms. Allocated memory is still 117.4MB. Free memory was 77.6MB in the beginning and 62.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.09ms. Allocated memory is still 117.4MB. Free memory was 62.9MB in the beginning and 61.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 15.59ms. Allocated memory is still 117.4MB. Free memory was 61.2MB in the beginning and 59.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 414.81ms. Allocated memory was 117.4MB in the beginning and 159.4MB in the end (delta: 41.9MB). Free memory was 59.8MB in the beginning and 128.6MB in the end (delta: -68.8MB). Peak memory consumption was 19.8MB. Max. memory is 16.1GB. * TraceAbstraction took 3782.25ms. Allocated memory is still 159.4MB. Free memory was 127.8MB in the beginning and 94.2MB in the end (delta: 33.6MB). Peak memory consumption was 33.2MB. Max. memory is 16.1GB. * Witness Printer took 30.29ms. Allocated memory is still 159.4MB. Free memory was 94.2MB in the beginning and 91.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.3s, 76 PlacesBefore, 40 PlacesAfterwards, 69 TransitionsBefore, 33 TransitionsAfterwards, 900 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 44 TotalNumberOfCompositions, 6424 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3105, independent: 2775, independent conditional: 0, independent unconditional: 2775, dependent: 330, dependent conditional: 0, dependent unconditional: 330, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 513, independent: 482, independent conditional: 0, independent unconditional: 482, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3105, independent: 2293, independent conditional: 0, independent unconditional: 2293, dependent: 299, dependent conditional: 0, dependent unconditional: 299, unknown: 513, unknown conditional: 0, unknown unconditional: 513] , Statistics on independence cache: Total cache size (in pairs): 214, Positive cache size: 189, Positive conditional cache size: 0, Positive unconditional cache size: 189, Negative cache size: 25, Negative conditional cache size: 0, Negative unconditional cache size: 25, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 65]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 65]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 82]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 82]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 124 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.7s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 655 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 585 mSDsluCounter, 87 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 47 mSDsCounter, 87 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 825 IncrementalHoareTripleChecker+Invalid, 912 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 87 mSolverCounterUnsat, 40 mSDtfsCounter, 825 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=236occurred in iteration=6, InterpolantAutomatonStates: 57, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 131 NumberOfCodeBlocks, 131 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 120 ConstructedInterpolants, 0 QuantifiedInterpolants, 360 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 21:11:41,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ad41ad-d2dd-45f5-b18b-fd3ab269a086/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE