./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a 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_ba762c5e-1714-4c45-9886-041998035636/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba762c5e-1714-4c45-9886-041998035636/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba762c5e-1714-4c45-9886-041998035636/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba762c5e-1714-4c45-9886-041998035636/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba762c5e-1714-4c45-9886-041998035636/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba762c5e-1714-4c45-9886-041998035636/bin/uautomizer-ZsLfNo2U6R --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 e1611f006d8b4d3ca09ba5acfb7e64e93bdf2d1c3a87f0ab00b1667331afb989 --- 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-38b53e6 [2022-11-25 17:42:08,396 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:42:08,400 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:42:08,453 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:42:08,454 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:42:08,455 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:42:08,462 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:42:08,466 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:42:08,470 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:42:08,476 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:42:08,478 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:42:08,481 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:42:08,482 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:42:08,489 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:42:08,491 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:42:08,495 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:42:08,498 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:42:08,499 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:42:08,501 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:42:08,510 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:42:08,512 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:42:08,515 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:42:08,517 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:42:08,518 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:42:08,530 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:42:08,532 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:42:08,533 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:42:08,535 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:42:08,536 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:42:08,537 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:42:08,538 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:42:08,539 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:42:08,541 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:42:08,545 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:42:08,546 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:42:08,547 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:42:08,548 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:42:08,548 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:42:08,549 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:42:08,551 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:42:08,552 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:42:08,553 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba762c5e-1714-4c45-9886-041998035636/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-25 17:42:08,606 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:42:08,606 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:42:08,607 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:42:08,608 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:42:08,609 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:42:08,610 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:42:08,611 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:42:08,611 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:42:08,612 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:42:08,612 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:42:08,614 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:42:08,614 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:42:08,614 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:42:08,615 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:42:08,615 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:42:08,616 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:42:08,616 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:42:08,616 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:42:08,617 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 17:42:08,617 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:42:08,617 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:42:08,618 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:42:08,618 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:42:08,619 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:42:08,619 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:42:08,619 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:42:08,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:42:08,620 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:42:08,621 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:42:08,621 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:42:08,622 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:42:08,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:42:08,623 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:42:08,623 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:42:08,623 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:42:08,624 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:42:08,624 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_ba762c5e-1714-4c45-9886-041998035636/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba762c5e-1714-4c45-9886-041998035636/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e1611f006d8b4d3ca09ba5acfb7e64e93bdf2d1c3a87f0ab00b1667331afb989 [2022-11-25 17:42:09,087 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:42:09,130 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:42:09,134 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:42:09,136 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:42:09,136 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:42:09,138 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba762c5e-1714-4c45-9886-041998035636/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c [2022-11-25 17:42:13,039 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:42:13,284 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:42:13,285 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba762c5e-1714-4c45-9886-041998035636/sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c [2022-11-25 17:42:13,295 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba762c5e-1714-4c45-9886-041998035636/bin/uautomizer-ZsLfNo2U6R/data/f389a51c7/7152752d8c6c4999a9bd3c14b3207022/FLAG85bfebc30 [2022-11-25 17:42:13,314 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba762c5e-1714-4c45-9886-041998035636/bin/uautomizer-ZsLfNo2U6R/data/f389a51c7/7152752d8c6c4999a9bd3c14b3207022 [2022-11-25 17:42:13,318 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:42:13,320 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:42:13,322 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:42:13,322 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:42:13,330 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:42:13,331 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:42:13" (1/1) ... [2022-11-25 17:42:13,332 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d68b945 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:42:13, skipping insertion in model container [2022-11-25 17:42:13,333 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:42:13" (1/1) ... [2022-11-25 17:42:13,343 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:42:13,373 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:42:13,605 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:42:13,611 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:42:13,612 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:42:13,614 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:42:13,617 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:42:13,621 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:42:13,625 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:42:13,627 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:42:13,627 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:42:13,629 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:42:13,632 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:42:13,634 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:42:13,634 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:42:13,641 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:42:13,653 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_ba762c5e-1714-4c45-9886-041998035636/sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c[3947,3960] [2022-11-25 17:42:13,661 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:42:13,674 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:42:13,698 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:42:13,700 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:42:13,703 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:42:13,704 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:42:13,705 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:42:13,707 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:42:13,708 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:42:13,709 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:42:13,710 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:42:13,711 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:42:13,713 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:42:13,714 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:42:13,714 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:42:13,716 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:42:13,739 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_ba762c5e-1714-4c45-9886-041998035636/sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c[3947,3960] [2022-11-25 17:42:13,743 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:42:13,762 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:42:13,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:42:13 WrapperNode [2022-11-25 17:42:13,763 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:42:13,764 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:42:13,764 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:42:13,765 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:42:13,774 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:42:13" (1/1) ... [2022-11-25 17:42:13,787 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:42:13" (1/1) ... [2022-11-25 17:42:13,824 INFO L138 Inliner]: procedures = 25, calls = 61, calls flagged for inlining = 16, calls inlined = 20, statements flattened = 347 [2022-11-25 17:42:13,824 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:42:13,825 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:42:13,825 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:42:13,826 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:42:13,838 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:42:13" (1/1) ... [2022-11-25 17:42:13,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:42:13" (1/1) ... [2022-11-25 17:42:13,844 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:42:13" (1/1) ... [2022-11-25 17:42:13,844 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:42:13" (1/1) ... [2022-11-25 17:42:13,856 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:42:13" (1/1) ... [2022-11-25 17:42:13,863 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:42:13" (1/1) ... [2022-11-25 17:42:13,866 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:42:13" (1/1) ... [2022-11-25 17:42:13,868 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:42:13" (1/1) ... [2022-11-25 17:42:13,873 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:42:13,874 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:42:13,874 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:42:13,874 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:42:13,875 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:42:13" (1/1) ... [2022-11-25 17:42:13,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:42:13,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba762c5e-1714-4c45-9886-041998035636/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:42:13,918 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba762c5e-1714-4c45-9886-041998035636/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:42:13,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba762c5e-1714-4c45-9886-041998035636/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:42:13,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:42:13,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:42:13,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:42:13,987 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 17:42:13,987 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 17:42:13,987 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 17:42:13,987 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 17:42:13,987 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 17:42:13,987 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-25 17:42:13,988 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-25 17:42:13,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:42:13,988 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 17:42:13,988 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 17:42:13,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 17:42:13,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:42:13,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:42:13,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:42:13,991 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 17:42:14,203 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:42:14,206 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:42:15,089 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:42:15,439 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:42:15,439 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-25 17:42:15,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:42:15 BoogieIcfgContainer [2022-11-25 17:42:15,445 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:42:15,452 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:42:15,453 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:42:15,457 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:42:15,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:42:13" (1/3) ... [2022-11-25 17:42:15,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3243ff74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:42:15, skipping insertion in model container [2022-11-25 17:42:15,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:42:13" (2/3) ... [2022-11-25 17:42:15,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3243ff74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:42:15, skipping insertion in model container [2022-11-25 17:42:15,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:42:15" (3/3) ... [2022-11-25 17:42:15,465 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring.wvr.c [2022-11-25 17:42:15,479 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 17:42:15,495 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:42:15,496 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2022-11-25 17:42:15,496 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:42:15,809 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-25 17:42:15,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 300 places, 312 transitions, 648 flow [2022-11-25 17:42:16,059 INFO L130 PetriNetUnfolder]: 22/309 cut-off events. [2022-11-25 17:42:16,060 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 17:42:16,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 322 conditions, 309 events. 22/309 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 349 event pairs, 0 based on Foata normal form. 0/255 useless extension candidates. Maximal degree in co-relation 260. Up to 3 conditions per place. [2022-11-25 17:42:16,068 INFO L82 GeneralOperation]: Start removeDead. Operand has 300 places, 312 transitions, 648 flow [2022-11-25 17:42:16,077 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 277 places, 288 transitions, 591 flow [2022-11-25 17:42:16,082 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:42:16,102 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 277 places, 288 transitions, 591 flow [2022-11-25 17:42:16,106 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 277 places, 288 transitions, 591 flow [2022-11-25 17:42:16,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 277 places, 288 transitions, 591 flow [2022-11-25 17:42:16,207 INFO L130 PetriNetUnfolder]: 21/288 cut-off events. [2022-11-25 17:42:16,207 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 17:42:16,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 300 conditions, 288 events. 21/288 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 345 event pairs, 0 based on Foata normal form. 0/235 useless extension candidates. Maximal degree in co-relation 260. Up to 3 conditions per place. [2022-11-25 17:42:16,218 INFO L119 LiptonReduction]: Number of co-enabled transitions 5314 [2022-11-25 17:42:39,143 INFO L134 LiptonReduction]: Checked pairs total: 13116 [2022-11-25 17:42:39,143 INFO L136 LiptonReduction]: Total number of compositions: 313 [2022-11-25 17:42:39,164 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:42:39,173 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;@32b7576f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:42:39,173 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2022-11-25 17:42:39,177 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-11-25 17:42:39,177 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:42:39,178 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:42:39,179 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 17:42:39,180 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-11-25 17:42:39,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:42:39,187 INFO L85 PathProgramCache]: Analyzing trace with hash 46668, now seen corresponding path program 1 times [2022-11-25 17:42:39,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:42:39,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743491030] [2022-11-25 17:42:39,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:42:39,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:42:39,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:39,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:42:39,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:42:39,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743491030] [2022-11-25 17:42:39,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743491030] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:42:39,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:42:39,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:42:39,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742470283] [2022-11-25 17:42:39,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:42:39,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:42:39,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:42:39,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:42:39,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:42:39,851 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 625 [2022-11-25 17:42:39,856 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 61 transitions, 137 flow. Second operand has 3 states, 3 states have (on average 255.66666666666666) internal successors, (767), 3 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:42:39,856 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:42:39,856 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 625 [2022-11-25 17:42:39,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:42:43,561 INFO L130 PetriNetUnfolder]: 11587/16441 cut-off events. [2022-11-25 17:42:43,561 INFO L131 PetriNetUnfolder]: For 734/734 co-relation queries the response was YES. [2022-11-25 17:42:43,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33573 conditions, 16441 events. 11587/16441 cut-off events. For 734/734 co-relation queries the response was YES. Maximal size of possible extension queue 1123. Compared 95275 event pairs, 10218 based on Foata normal form. 0/6477 useless extension candidates. Maximal degree in co-relation 15510. Up to 8225 conditions per place. [2022-11-25 17:42:43,734 INFO L137 encePairwiseOnDemand]: 605/625 looper letters, 93 selfloop transitions, 6 changer transitions 0/99 dead transitions. [2022-11-25 17:42:43,736 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 99 transitions, 426 flow [2022-11-25 17:42:43,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:42:43,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:42:43,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 886 transitions. [2022-11-25 17:42:43,762 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47253333333333336 [2022-11-25 17:42:43,763 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 886 transitions. [2022-11-25 17:42:43,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 886 transitions. [2022-11-25 17:42:43,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:42:43,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 886 transitions. [2022-11-25 17:42:43,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 295.3333333333333) internal successors, (886), 3 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:42:43,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 625.0) internal successors, (2500), 4 states have internal predecessors, (2500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:42:43,792 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 625.0) internal successors, (2500), 4 states have internal predecessors, (2500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:42:43,794 INFO L175 Difference]: Start difference. First operand has 64 places, 61 transitions, 137 flow. Second operand 3 states and 886 transitions. [2022-11-25 17:42:43,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 99 transitions, 426 flow [2022-11-25 17:42:43,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 99 transitions, 408 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-25 17:42:43,821 INFO L231 Difference]: Finished difference. Result has 56 places, 58 transitions, 168 flow [2022-11-25 17:42:43,824 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=625, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=56, PETRI_TRANSITIONS=58} [2022-11-25 17:42:43,827 INFO L288 CegarLoopForPetriNet]: 64 programPoint places, -8 predicate places. [2022-11-25 17:42:43,828 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 58 transitions, 168 flow [2022-11-25 17:42:43,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 255.66666666666666) internal successors, (767), 3 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:42:43,829 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:42:43,829 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 17:42:43,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:42:43,830 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-11-25 17:42:43,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:42:43,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1448674, now seen corresponding path program 1 times [2022-11-25 17:42:43,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:42:43,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047529699] [2022-11-25 17:42:43,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:42:43,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:42:43,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:43,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:42:43,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:42:43,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047529699] [2022-11-25 17:42:43,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047529699] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:42:43,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813491983] [2022-11-25 17:42:43,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:42:43,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:42:43,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba762c5e-1714-4c45-9886-041998035636/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:42:43,977 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba762c5e-1714-4c45-9886-041998035636/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:42:44,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba762c5e-1714-4c45-9886-041998035636/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 17:42:44,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:44,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 17:42:44,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:42:44,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:42:44,198 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:42:44,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813491983] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:42:44,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:42:44,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-11-25 17:42:44,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905433367] [2022-11-25 17:42:44,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:42:44,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:42:44,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:42:44,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:42:44,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:42:44,265 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 625 [2022-11-25 17:42:44,267 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 58 transitions, 168 flow. Second operand has 4 states, 4 states have (on average 255.75) internal successors, (1023), 4 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:42:44,267 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:42:44,267 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 625 [2022-11-25 17:42:44,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:42:47,100 INFO L130 PetriNetUnfolder]: 11587/16438 cut-off events. [2022-11-25 17:42:47,100 INFO L131 PetriNetUnfolder]: For 160/160 co-relation queries the response was YES. [2022-11-25 17:42:47,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33364 conditions, 16438 events. 11587/16438 cut-off events. For 160/160 co-relation queries the response was YES. Maximal size of possible extension queue 1088. Compared 94530 event pairs, 10218 based on Foata normal form. 0/6483 useless extension candidates. Maximal degree in co-relation 16662. Up to 8221 conditions per place. [2022-11-25 17:42:47,194 INFO L137 encePairwiseOnDemand]: 616/625 looper letters, 90 selfloop transitions, 6 changer transitions 0/96 dead transitions. [2022-11-25 17:42:47,195 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 96 transitions, 436 flow [2022-11-25 17:42:47,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:42:47,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:42:47,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1119 transitions. [2022-11-25 17:42:47,200 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4476 [2022-11-25 17:42:47,200 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1119 transitions. [2022-11-25 17:42:47,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1119 transitions. [2022-11-25 17:42:47,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:42:47,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1119 transitions. [2022-11-25 17:42:47,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 279.75) internal successors, (1119), 4 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:42:47,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 625.0) internal successors, (3125), 5 states have internal predecessors, (3125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:42:47,212 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 625.0) internal successors, (3125), 5 states have internal predecessors, (3125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:42:47,212 INFO L175 Difference]: Start difference. First operand has 56 places, 58 transitions, 168 flow. Second operand 4 states and 1119 transitions. [2022-11-25 17:42:47,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 96 transitions, 436 flow [2022-11-25 17:42:47,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 96 transitions, 424 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:42:47,216 INFO L231 Difference]: Finished difference. Result has 54 places, 55 transitions, 156 flow [2022-11-25 17:42:47,216 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=625, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=54, PETRI_TRANSITIONS=55} [2022-11-25 17:42:47,217 INFO L288 CegarLoopForPetriNet]: 64 programPoint places, -10 predicate places. [2022-11-25 17:42:47,217 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 55 transitions, 156 flow [2022-11-25 17:42:47,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 255.75) internal successors, (1023), 4 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:42:47,218 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:42:47,218 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 17:42:47,231 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba762c5e-1714-4c45-9886-041998035636/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-25 17:42:47,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba762c5e-1714-4c45-9886-041998035636/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:42:47,425 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-11-25 17:42:47,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:42:47,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1448675, now seen corresponding path program 1 times [2022-11-25 17:42:47,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:42:47,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888460922] [2022-11-25 17:42:47,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:42:47,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:42:47,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:47,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:42:47,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:42:47,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888460922] [2022-11-25 17:42:47,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888460922] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:42:47,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550932523] [2022-11-25 17:42:47,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:42:47,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:42:47,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba762c5e-1714-4c45-9886-041998035636/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:42:47,545 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba762c5e-1714-4c45-9886-041998035636/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:42:47,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba762c5e-1714-4c45-9886-041998035636/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 17:42:47,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:47,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 17:42:47,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:42:47,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:42:47,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:42:47,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:42:47,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550932523] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:42:47,716 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:42:47,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-11-25 17:42:47,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937827328] [2022-11-25 17:42:47,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:42:47,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:42:47,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:42:47,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:42:47,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:42:47,832 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 625 [2022-11-25 17:42:47,835 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 55 transitions, 156 flow. Second operand has 7 states, 7 states have (on average 256.14285714285717) internal successors, (1793), 7 states have internal predecessors, (1793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:42:47,835 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:42:47,835 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 625 [2022-11-25 17:42:47,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:42:54,196 INFO L130 PetriNetUnfolder]: 28966/41089 cut-off events. [2022-11-25 17:42:54,197 INFO L131 PetriNetUnfolder]: For 400/400 co-relation queries the response was YES. [2022-11-25 17:42:54,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83383 conditions, 41089 events. 28966/41089 cut-off events. For 400/400 co-relation queries the response was YES. Maximal size of possible extension queue 1961. Compared 260069 event pairs, 25545 based on Foata normal form. 0/16206 useless extension candidates. Maximal degree in co-relation 66639. Up to 8223 conditions per place. [2022-11-25 17:42:54,440 INFO L137 encePairwiseOnDemand]: 616/625 looper letters, 213 selfloop transitions, 21 changer transitions 0/234 dead transitions. [2022-11-25 17:42:54,440 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 234 transitions, 1048 flow [2022-11-25 17:42:54,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:42:54,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:42:54,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1773 transitions. [2022-11-25 17:42:54,445 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4728 [2022-11-25 17:42:54,446 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1773 transitions. [2022-11-25 17:42:54,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1773 transitions. [2022-11-25 17:42:54,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:42:54,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1773 transitions. [2022-11-25 17:42:54,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 295.5) internal successors, (1773), 6 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:42:54,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 625.0) internal successors, (4375), 7 states have internal predecessors, (4375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:42:54,462 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 625.0) internal successors, (4375), 7 states have internal predecessors, (4375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:42:54,462 INFO L175 Difference]: Start difference. First operand has 54 places, 55 transitions, 156 flow. Second operand 6 states and 1773 transitions. [2022-11-25 17:42:54,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 234 transitions, 1048 flow [2022-11-25 17:42:54,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 234 transitions, 1035 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:42:54,470 INFO L231 Difference]: Finished difference. Result has 60 places, 70 transitions, 305 flow [2022-11-25 17:42:54,470 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=625, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=305, PETRI_PLACES=60, PETRI_TRANSITIONS=70} [2022-11-25 17:42:54,472 INFO L288 CegarLoopForPetriNet]: 64 programPoint places, -4 predicate places. [2022-11-25 17:42:54,472 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 70 transitions, 305 flow [2022-11-25 17:42:54,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 256.14285714285717) internal successors, (1793), 7 states have internal predecessors, (1793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:42:54,473 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:42:54,474 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-11-25 17:42:54,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba762c5e-1714-4c45-9886-041998035636/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 17:42:54,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba762c5e-1714-4c45-9886-041998035636/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:42:54,681 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-11-25 17:42:54,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:42:54,682 INFO L85 PathProgramCache]: Analyzing trace with hash 209726413, now seen corresponding path program 2 times [2022-11-25 17:42:54,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:42:54,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745037926] [2022-11-25 17:42:54,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:42:54,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:42:54,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:54,839 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:42:54,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:42:54,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745037926] [2022-11-25 17:42:54,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745037926] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:42:54,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568411318] [2022-11-25 17:42:54,840 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:42:54,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:42:54,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba762c5e-1714-4c45-9886-041998035636/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:42:54,842 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba762c5e-1714-4c45-9886-041998035636/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:42:54,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba762c5e-1714-4c45-9886-041998035636/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 17:42:54,974 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-25 17:42:54,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:42:54,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 17:42:54,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:42:54,994 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 17:42:54,995 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:42:54,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568411318] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:42:54,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:42:54,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-11-25 17:42:54,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538721478] [2022-11-25 17:42:54,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:42:54,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:42:54,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:42:54,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:42:54,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:42:55,033 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 625 [2022-11-25 17:42:55,035 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 70 transitions, 305 flow. Second operand has 3 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:42:55,035 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:42:55,035 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 625 [2022-11-25 17:42:55,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:42:59,984 INFO L130 PetriNetUnfolder]: 28966/41088 cut-off events. [2022-11-25 17:42:59,984 INFO L131 PetriNetUnfolder]: For 405/405 co-relation queries the response was YES. [2022-11-25 17:43:00,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83419 conditions, 41088 events. 28966/41088 cut-off events. For 405/405 co-relation queries the response was YES. Maximal size of possible extension queue 2328. Compared 265085 event pairs, 25545 based on Foata normal form. 1/16209 useless extension candidates. Maximal degree in co-relation 66649. Up to 41083 conditions per place. [2022-11-25 17:43:00,208 INFO L137 encePairwiseOnDemand]: 622/625 looper letters, 63 selfloop transitions, 6 changer transitions 0/69 dead transitions. [2022-11-25 17:43:00,208 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 69 transitions, 433 flow [2022-11-25 17:43:00,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:43:00,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:43:00,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 824 transitions. [2022-11-25 17:43:00,211 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43946666666666667 [2022-11-25 17:43:00,211 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 824 transitions. [2022-11-25 17:43:00,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 824 transitions. [2022-11-25 17:43:00,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:43:00,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 824 transitions. [2022-11-25 17:43:00,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 274.6666666666667) internal successors, (824), 3 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:43:00,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 625.0) internal successors, (2500), 4 states have internal predecessors, (2500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:43:00,220 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 625.0) internal successors, (2500), 4 states have internal predecessors, (2500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:43:00,220 INFO L175 Difference]: Start difference. First operand has 60 places, 70 transitions, 305 flow. Second operand 3 states and 824 transitions. [2022-11-25 17:43:00,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 69 transitions, 433 flow [2022-11-25 17:43:00,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 69 transitions, 403 flow, removed 9 selfloop flow, removed 1 redundant places. [2022-11-25 17:43:00,224 INFO L231 Difference]: Finished difference. Result has 60 places, 69 transitions, 277 flow [2022-11-25 17:43:00,224 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=625, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=277, PETRI_PLACES=60, PETRI_TRANSITIONS=69} [2022-11-25 17:43:00,226 INFO L288 CegarLoopForPetriNet]: 64 programPoint places, -4 predicate places. [2022-11-25 17:43:00,227 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 69 transitions, 277 flow [2022-11-25 17:43:00,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:43:00,227 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:43:00,228 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2022-11-25 17:43:00,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba762c5e-1714-4c45-9886-041998035636/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 17:43:00,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba762c5e-1714-4c45-9886-041998035636/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-25 17:43:00,433 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-11-25 17:43:00,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:43:00,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1178961167, now seen corresponding path program 1 times [2022-11-25 17:43:00,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:43:00,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918598019] [2022-11-25 17:43:00,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:43:00,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:43:00,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:43:00,583 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:43:00,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:43:00,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918598019] [2022-11-25 17:43:00,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918598019] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:43:00,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167142092] [2022-11-25 17:43:00,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:43:00,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:43:00,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba762c5e-1714-4c45-9886-041998035636/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:43:00,586 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba762c5e-1714-4c45-9886-041998035636/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:43:00,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba762c5e-1714-4c45-9886-041998035636/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 17:43:00,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:43:00,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 17:43:00,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:43:00,746 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:43:00,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:43:00,806 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:43:00,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167142092] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:43:00,807 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:43:00,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-25 17:43:00,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770352032] [2022-11-25 17:43:00,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:43:00,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 17:43:00,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:43:00,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 17:43:00,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-25 17:43:01,012 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 625 [2022-11-25 17:43:01,016 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 69 transitions, 277 flow. Second operand has 13 states, 13 states have (on average 256.15384615384613) internal successors, (3330), 13 states have internal predecessors, (3330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:43:01,016 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:43:01,016 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 625 [2022-11-25 17:43:01,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:43:13,420 INFO L130 PetriNetUnfolder]: 63724/90390 cut-off events. [2022-11-25 17:43:13,420 INFO L131 PetriNetUnfolder]: For 940/940 co-relation queries the response was YES. [2022-11-25 17:43:13,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183458 conditions, 90390 events. 63724/90390 cut-off events. For 940/940 co-relation queries the response was YES. Maximal size of possible extension queue 2390. Compared 599039 event pairs, 56199 based on Foata normal form. 12/35666 useless extension candidates. Maximal degree in co-relation 183354. Up to 10890 conditions per place. [2022-11-25 17:43:13,862 INFO L137 encePairwiseOnDemand]: 617/625 looper letters, 458 selfloop transitions, 51 changer transitions 0/509 dead transitions. [2022-11-25 17:43:13,862 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 509 transitions, 2367 flow [2022-11-25 17:43:13,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 17:43:13,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 17:43:13,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3581 transitions. [2022-11-25 17:43:13,880 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47746666666666665 [2022-11-25 17:43:13,881 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3581 transitions. [2022-11-25 17:43:13,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3581 transitions. [2022-11-25 17:43:13,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:43:13,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3581 transitions. [2022-11-25 17:43:13,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 298.4166666666667) internal successors, (3581), 12 states have internal predecessors, (3581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:43:13,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 625.0) internal successors, (8125), 13 states have internal predecessors, (8125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:43:13,916 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 625.0) internal successors, (8125), 13 states have internal predecessors, (8125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:43:13,916 INFO L175 Difference]: Start difference. First operand has 60 places, 69 transitions, 277 flow. Second operand 12 states and 3581 transitions. [2022-11-25 17:43:13,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 509 transitions, 2367 flow [2022-11-25 17:43:13,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 509 transitions, 2343 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:43:13,926 INFO L231 Difference]: Finished difference. Result has 75 places, 99 transitions, 625 flow [2022-11-25 17:43:13,926 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=625, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=625, PETRI_PLACES=75, PETRI_TRANSITIONS=99} [2022-11-25 17:43:13,928 INFO L288 CegarLoopForPetriNet]: 64 programPoint places, 11 predicate places. [2022-11-25 17:43:13,928 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 99 transitions, 625 flow [2022-11-25 17:43:13,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 256.15384615384613) internal successors, (3330), 13 states have internal predecessors, (3330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:43:13,930 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:43:13,930 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:43:13,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba762c5e-1714-4c45-9886-041998035636/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 17:43:14,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba762c5e-1714-4c45-9886-041998035636/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:43:14,136 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-11-25 17:43:14,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:43:14,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1146784962, now seen corresponding path program 1 times [2022-11-25 17:43:14,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:43:14,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205038775] [2022-11-25 17:43:14,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:43:14,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:43:14,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:43:14,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:43:14,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:43:14,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205038775] [2022-11-25 17:43:14,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205038775] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:43:14,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:43:14,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:43:14,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324431713] [2022-11-25 17:43:14,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:43:14,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:43:14,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:43:14,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:43:14,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:43:14,367 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 625 [2022-11-25 17:43:14,368 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 99 transitions, 625 flow. Second operand has 4 states, 4 states have (on average 251.75) internal successors, (1007), 4 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:43:14,368 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:43:14,369 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 625 [2022-11-25 17:43:14,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand