./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ee6e11-7b9e-4d33-a638-16f26f8ed3bb/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ee6e11-7b9e-4d33-a638-16f26f8ed3bb/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_e3ee6e11-7b9e-4d33-a638-16f26f8ed3bb/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ee6e11-7b9e-4d33-a638-16f26f8ed3bb/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ee6e11-7b9e-4d33-a638-16f26f8ed3bb/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_e3ee6e11-7b9e-4d33-a638-16f26f8ed3bb/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 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 --- 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 17:55:52,555 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:55:52,557 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:55:52,595 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:55:52,596 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:55:52,598 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:55:52,599 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:55:52,601 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:55:52,603 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:55:52,603 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:55:52,607 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:55:52,608 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:55:52,610 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:55:52,611 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:55:52,615 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:55:52,617 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:55:52,618 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:55:52,623 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:55:52,625 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:55:52,627 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:55:52,632 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:55:52,633 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:55:52,634 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:55:52,635 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:55:52,638 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:55:52,638 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:55:52,639 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:55:52,640 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:55:52,640 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:55:52,641 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:55:52,641 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:55:52,642 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:55:52,643 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:55:52,643 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:55:52,644 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:55:52,645 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:55:52,645 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:55:52,646 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:55:52,646 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:55:52,654 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:55:52,656 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:55:52,657 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ee6e11-7b9e-4d33-a638-16f26f8ed3bb/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-25 17:55:52,684 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:55:52,685 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:55:52,685 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:55:52,685 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:55:52,686 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:55:52,686 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:55:52,687 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:55:52,687 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:55:52,687 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:55:52,687 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:55:52,688 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:55:52,689 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:55:52,689 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:55:52,689 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:55:52,689 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:55:52,689 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:55:52,689 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:55:52,690 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:55:52,690 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 17:55:52,690 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:55:52,690 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:55:52,690 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:55:52,691 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:55:52,691 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:55:52,691 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:55:52,692 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:55:52,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:55:52,692 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:55:52,693 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:55:52,693 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:55:52,693 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:55:52,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:55:52,694 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:55:52,694 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:55:52,694 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:55:52,694 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:55:52,694 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_e3ee6e11-7b9e-4d33-a638-16f26f8ed3bb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ee6e11-7b9e-4d33-a638-16f26f8ed3bb/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 [2022-11-25 17:55:52,938 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:55:52,966 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:55:52,968 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:55:52,970 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:55:52,970 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:55:52,971 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ee6e11-7b9e-4d33-a638-16f26f8ed3bb/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c [2022-11-25 17:55:55,943 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:55:56,206 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:55:56,207 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ee6e11-7b9e-4d33-a638-16f26f8ed3bb/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c [2022-11-25 17:55:56,218 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ee6e11-7b9e-4d33-a638-16f26f8ed3bb/bin/uautomizer-ZsLfNo2U6R/data/fe82768e9/76998f4408224bd58072f110c4708b52/FLAG7af3c1a3e [2022-11-25 17:55:56,242 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ee6e11-7b9e-4d33-a638-16f26f8ed3bb/bin/uautomizer-ZsLfNo2U6R/data/fe82768e9/76998f4408224bd58072f110c4708b52 [2022-11-25 17:55:56,248 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:55:56,250 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:55:56,255 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:55:56,255 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:55:56,259 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:55:56,260 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:55:56" (1/1) ... [2022-11-25 17:55:56,261 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a444c6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:55:56, skipping insertion in model container [2022-11-25 17:55:56,262 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:55:56" (1/1) ... [2022-11-25 17:55:56,270 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:55:56,315 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:55:56,529 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:55:56,537 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:55:56,539 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:55:56,541 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:55:56,541 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:55:56,550 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:55:56,551 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:55:56,556 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:55:56,558 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:55:56,561 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:55:56,562 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:55:56,564 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:55:56,574 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:55:56,575 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:55:56,576 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:55:56,577 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:55:56,578 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:55:56,579 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:55:56,580 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:55:56,581 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:55:56,582 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:55:56,586 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:55:56,586 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:55:56,592 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:55:56,612 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_e3ee6e11-7b9e-4d33-a638-16f26f8ed3bb/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c[6687,6700] [2022-11-25 17:55:56,617 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:55:56,635 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:55:56,656 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:55:56,665 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:55:56,666 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:55:56,668 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:55:56,669 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:55:56,676 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:55:56,677 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:55:56,678 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:55:56,679 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:55:56,683 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:55:56,684 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:55:56,685 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:55:56,698 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:55:56,699 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:55:56,700 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:55:56,701 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:55:56,702 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:55:56,703 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:55:56,703 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:55:56,704 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:55:56,705 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:55:56,713 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:55:56,714 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:55:56,715 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:55:56,721 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_e3ee6e11-7b9e-4d33-a638-16f26f8ed3bb/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c[6687,6700] [2022-11-25 17:55:56,728 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:55:56,748 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:55:56,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:55:56 WrapperNode [2022-11-25 17:55:56,749 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:55:56,751 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:55:56,751 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:55:56,751 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:55:56,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:55:56" (1/1) ... [2022-11-25 17:55:56,782 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:55:56" (1/1) ... [2022-11-25 17:55:56,836 INFO L138 Inliner]: procedures = 26, calls = 93, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 492 [2022-11-25 17:55:56,839 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:55:56,839 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:55:56,840 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:55:56,840 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:55:56,849 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:55:56" (1/1) ... [2022-11-25 17:55:56,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:55:56" (1/1) ... [2022-11-25 17:55:56,855 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:55:56" (1/1) ... [2022-11-25 17:55:56,855 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:55:56" (1/1) ... [2022-11-25 17:55:56,866 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:55:56" (1/1) ... [2022-11-25 17:55:56,872 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:55:56" (1/1) ... [2022-11-25 17:55:56,875 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:55:56" (1/1) ... [2022-11-25 17:55:56,877 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:55:56" (1/1) ... [2022-11-25 17:55:56,881 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:55:56,881 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:55:56,882 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:55:56,882 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:55:56,895 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:55:56" (1/1) ... [2022-11-25 17:55:56,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:55:56,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ee6e11-7b9e-4d33-a638-16f26f8ed3bb/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:55:56,930 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ee6e11-7b9e-4d33-a638-16f26f8ed3bb/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:55:56,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ee6e11-7b9e-4d33-a638-16f26f8ed3bb/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:55:56,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:55:56,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:55:56,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:55:56,979 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 17:55:56,980 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 17:55:56,980 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 17:55:56,981 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 17:55:56,981 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 17:55:56,981 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-25 17:55:56,981 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-25 17:55:56,982 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-25 17:55:56,982 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-25 17:55:56,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:55:56,982 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 17:55:56,982 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 17:55:56,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 17:55:56,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:55:56,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:55:56,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:55:56,986 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 17:55:57,115 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:55:57,121 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:55:58,049 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:55:58,313 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:55:58,313 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-11-25 17:55:58,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:55:58 BoogieIcfgContainer [2022-11-25 17:55:58,317 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:55:58,319 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:55:58,320 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:55:58,323 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:55:58,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:55:56" (1/3) ... [2022-11-25 17:55:58,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7906ad21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:55:58, skipping insertion in model container [2022-11-25 17:55:58,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:55:56" (2/3) ... [2022-11-25 17:55:58,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7906ad21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:55:58, skipping insertion in model container [2022-11-25 17:55:58,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:55:58" (3/3) ... [2022-11-25 17:55:58,332 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-2.wvr-bad.c [2022-11-25 17:55:58,341 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 17:55:58,352 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:55:58,353 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2022-11-25 17:55:58,353 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:55:58,520 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-25 17:55:58,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 371 places, 395 transitions, 822 flow [2022-11-25 17:55:58,726 INFO L130 PetriNetUnfolder]: 37/391 cut-off events. [2022-11-25 17:55:58,727 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-25 17:55:58,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 408 conditions, 391 events. 37/391 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 403 event pairs, 0 based on Foata normal form. 0/322 useless extension candidates. Maximal degree in co-relation 344. Up to 8 conditions per place. [2022-11-25 17:55:58,745 INFO L82 GeneralOperation]: Start removeDead. Operand has 371 places, 395 transitions, 822 flow [2022-11-25 17:55:58,758 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 345 places, 368 transitions, 757 flow [2022-11-25 17:55:58,763 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:55:58,785 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 345 places, 368 transitions, 757 flow [2022-11-25 17:55:58,789 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 345 places, 368 transitions, 757 flow [2022-11-25 17:55:58,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 345 places, 368 transitions, 757 flow [2022-11-25 17:55:58,888 INFO L130 PetriNetUnfolder]: 36/368 cut-off events. [2022-11-25 17:55:58,888 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 17:55:58,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 384 conditions, 368 events. 36/368 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 400 event pairs, 0 based on Foata normal form. 0/300 useless extension candidates. Maximal degree in co-relation 344. Up to 8 conditions per place. [2022-11-25 17:55:58,899 INFO L119 LiptonReduction]: Number of co-enabled transitions 8592 [2022-11-25 17:56:20,973 INFO L134 LiptonReduction]: Checked pairs total: 10558 [2022-11-25 17:56:20,973 INFO L136 LiptonReduction]: Total number of compositions: 445 [2022-11-25 17:56:20,990 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:56:20,996 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;@54f360e3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:56:20,997 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2022-11-25 17:56:21,001 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-11-25 17:56:21,001 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:56:21,001 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:56:21,002 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 17:56:21,003 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-25 17:56:21,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:56:21,008 INFO L85 PathProgramCache]: Analyzing trace with hash 66277, now seen corresponding path program 1 times [2022-11-25 17:56:21,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:56:21,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585362244] [2022-11-25 17:56:21,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:56:21,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:56:21,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:21,442 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 17:56:21,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:56:21,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585362244] [2022-11-25 17:56:21,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585362244] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:56:21,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:56:21,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:56:21,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544562319] [2022-11-25 17:56:21,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:56:21,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:56:21,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:56:21,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:56:21,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:56:21,557 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 321 out of 840 [2022-11-25 17:56:21,564 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 63 transitions, 147 flow. Second operand has 3 states, 3 states have (on average 321.6666666666667) internal successors, (965), 3 states have internal predecessors, (965), 0 states have call successors, (0), 0 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 17:56:21,565 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:56:21,565 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 321 of 840 [2022-11-25 17:56:21,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:56:25,146 INFO L130 PetriNetUnfolder]: 9913/12987 cut-off events. [2022-11-25 17:56:25,146 INFO L131 PetriNetUnfolder]: For 614/614 co-relation queries the response was YES. [2022-11-25 17:56:25,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26824 conditions, 12987 events. 9913/12987 cut-off events. For 614/614 co-relation queries the response was YES. Maximal size of possible extension queue 866. Compared 58487 event pairs, 7514 based on Foata normal form. 0/4435 useless extension candidates. Maximal degree in co-relation 12048. Up to 6499 conditions per place. [2022-11-25 17:56:25,248 INFO L137 encePairwiseOnDemand]: 812/840 looper letters, 85 selfloop transitions, 8 changer transitions 0/93 dead transitions. [2022-11-25 17:56:25,248 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 93 transitions, 414 flow [2022-11-25 17:56:25,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:56:25,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:56:25,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1088 transitions. [2022-11-25 17:56:25,270 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43174603174603177 [2022-11-25 17:56:25,271 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1088 transitions. [2022-11-25 17:56:25,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1088 transitions. [2022-11-25 17:56:25,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:56:25,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1088 transitions. [2022-11-25 17:56:25,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 362.6666666666667) internal successors, (1088), 3 states have internal predecessors, (1088), 0 states have call successors, (0), 0 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 17:56:25,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 840.0) internal successors, (3360), 4 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:56:25,299 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 840.0) internal successors, (3360), 4 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:56:25,301 INFO L175 Difference]: Start difference. First operand has 68 places, 63 transitions, 147 flow. Second operand 3 states and 1088 transitions. [2022-11-25 17:56:25,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 93 transitions, 414 flow [2022-11-25 17:56:25,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 93 transitions, 388 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-25 17:56:25,341 INFO L231 Difference]: Finished difference. Result has 53 places, 58 transitions, 186 flow [2022-11-25 17:56:25,342 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=840, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=53, PETRI_TRANSITIONS=58} [2022-11-25 17:56:25,346 INFO L288 CegarLoopForPetriNet]: 68 programPoint places, -15 predicate places. [2022-11-25 17:56:25,346 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 58 transitions, 186 flow [2022-11-25 17:56:25,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 321.6666666666667) internal successors, (965), 3 states have internal predecessors, (965), 0 states have call successors, (0), 0 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 17:56:25,347 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:56:25,347 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 17:56:25,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:56:25,348 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-25 17:56:25,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:56:25,358 INFO L85 PathProgramCache]: Analyzing trace with hash 2057562, now seen corresponding path program 1 times [2022-11-25 17:56:25,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:56:25,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200178208] [2022-11-25 17:56:25,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:56:25,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:56:25,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:25,473 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 17:56:25,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:56:25,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200178208] [2022-11-25 17:56:25,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200178208] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:56:25,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:56:25,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:56:25,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495689813] [2022-11-25 17:56:25,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:56:25,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:56:25,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:56:25,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:56:25,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:56:25,530 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 321 out of 840 [2022-11-25 17:56:25,531 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 58 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 322.0) internal successors, (966), 3 states have internal predecessors, (966), 0 states have call successors, (0), 0 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 17:56:25,532 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:56:25,532 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 321 of 840 [2022-11-25 17:56:25,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:56:28,929 INFO L130 PetriNetUnfolder]: 9913/12983 cut-off events. [2022-11-25 17:56:28,929 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2022-11-25 17:56:28,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26591 conditions, 12983 events. 9913/12983 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 866. Compared 58385 event pairs, 7514 based on Foata normal form. 0/4443 useless extension candidates. Maximal degree in co-relation 13270. Up to 12983 conditions per place. [2022-11-25 17:56:29,019 INFO L137 encePairwiseOnDemand]: 835/840 looper letters, 53 selfloop transitions, 1 changer transitions 0/54 dead transitions. [2022-11-25 17:56:29,019 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 54 transitions, 278 flow [2022-11-25 17:56:29,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:56:29,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:56:29,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1014 transitions. [2022-11-25 17:56:29,024 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4023809523809524 [2022-11-25 17:56:29,024 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1014 transitions. [2022-11-25 17:56:29,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1014 transitions. [2022-11-25 17:56:29,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:56:29,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1014 transitions. [2022-11-25 17:56:29,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 338.0) internal successors, (1014), 3 states have internal predecessors, (1014), 0 states have call successors, (0), 0 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 17:56:29,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 840.0) internal successors, (3360), 4 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:56:29,037 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 840.0) internal successors, (3360), 4 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:56:29,037 INFO L175 Difference]: Start difference. First operand has 53 places, 58 transitions, 186 flow. Second operand 3 states and 1014 transitions. [2022-11-25 17:56:29,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 54 transitions, 278 flow [2022-11-25 17:56:29,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 54 transitions, 262 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:56:29,040 INFO L231 Difference]: Finished difference. Result has 49 places, 54 transitions, 156 flow [2022-11-25 17:56:29,041 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=840, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=49, PETRI_TRANSITIONS=54} [2022-11-25 17:56:29,041 INFO L288 CegarLoopForPetriNet]: 68 programPoint places, -19 predicate places. [2022-11-25 17:56:29,042 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 54 transitions, 156 flow [2022-11-25 17:56:29,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 322.0) internal successors, (966), 3 states have internal predecessors, (966), 0 states have call successors, (0), 0 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 17:56:29,043 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:56:29,043 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 17:56:29,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:56:29,044 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-25 17:56:29,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:56:29,048 INFO L85 PathProgramCache]: Analyzing trace with hash 2057594, now seen corresponding path program 1 times [2022-11-25 17:56:29,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:56:29,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138599643] [2022-11-25 17:56:29,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:56:29,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:56:29,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:29,179 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 17:56:29,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:56:29,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138599643] [2022-11-25 17:56:29,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138599643] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:56:29,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67410773] [2022-11-25 17:56:29,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:56:29,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:56:29,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ee6e11-7b9e-4d33-a638-16f26f8ed3bb/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:56:29,191 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ee6e11-7b9e-4d33-a638-16f26f8ed3bb/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:56:29,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ee6e11-7b9e-4d33-a638-16f26f8ed3bb/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 17:56:29,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:29,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 17:56:29,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:56:29,354 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 17:56:29,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:56:29,372 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 17:56:29,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67410773] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:56:29,373 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:56:29,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-11-25 17:56:29,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236758169] [2022-11-25 17:56:29,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:56:29,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:56:29,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:56:29,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:56:29,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:56:29,532 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 321 out of 840 [2022-11-25 17:56:29,536 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 54 transitions, 156 flow. Second operand has 7 states, 7 states have (on average 322.14285714285717) internal successors, (2255), 7 states have internal predecessors, (2255), 0 states have call successors, (0), 0 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 17:56:29,536 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:56:29,536 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 321 of 840 [2022-11-25 17:56:29,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:56:36,175 INFO L130 PetriNetUnfolder]: 24781/32450 cut-off events. [2022-11-25 17:56:36,176 INFO L131 PetriNetUnfolder]: For 240/240 co-relation queries the response was YES. [2022-11-25 17:56:36,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66430 conditions, 32450 events. 24781/32450 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 1247. Compared 159312 event pairs, 18785 based on Foata normal form. 0/11091 useless extension candidates. Maximal degree in co-relation 66422. Up to 6498 conditions per place. [2022-11-25 17:56:36,353 INFO L137 encePairwiseOnDemand]: 828/840 looper letters, 186 selfloop transitions, 29 changer transitions 0/215 dead transitions. [2022-11-25 17:56:36,353 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 215 transitions, 982 flow [2022-11-25 17:56:36,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:56:36,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:56:36,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2153 transitions. [2022-11-25 17:56:36,360 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42718253968253966 [2022-11-25 17:56:36,360 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2153 transitions. [2022-11-25 17:56:36,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2153 transitions. [2022-11-25 17:56:36,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:56:36,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2153 transitions. [2022-11-25 17:56:36,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 358.8333333333333) internal successors, (2153), 6 states have internal predecessors, (2153), 0 states have call successors, (0), 0 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 17:56:36,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 840.0) internal successors, (5880), 7 states have internal predecessors, (5880), 0 states have call successors, (0), 0 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 17:56:36,380 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 840.0) internal successors, (5880), 7 states have internal predecessors, (5880), 0 states have call successors, (0), 0 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 17:56:36,380 INFO L175 Difference]: Start difference. First operand has 49 places, 54 transitions, 156 flow. Second operand 6 states and 2153 transitions. [2022-11-25 17:56:36,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 215 transitions, 982 flow [2022-11-25 17:56:36,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 215 transitions, 981 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:56:36,387 INFO L231 Difference]: Finished difference. Result has 56 places, 75 transitions, 362 flow [2022-11-25 17:56:36,388 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=840, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=362, PETRI_PLACES=56, PETRI_TRANSITIONS=75} [2022-11-25 17:56:36,389 INFO L288 CegarLoopForPetriNet]: 68 programPoint places, -12 predicate places. [2022-11-25 17:56:36,389 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 75 transitions, 362 flow [2022-11-25 17:56:36,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 322.14285714285717) internal successors, (2255), 7 states have internal predecessors, (2255), 0 states have call successors, (0), 0 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 17:56:36,391 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:56:36,392 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-11-25 17:56:36,403 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ee6e11-7b9e-4d33-a638-16f26f8ed3bb/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-25 17:56:36,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ee6e11-7b9e-4d33-a638-16f26f8ed3bb/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:56:36,607 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-25 17:56:36,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:56:36,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1170241605, now seen corresponding path program 2 times [2022-11-25 17:56:36,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:56:36,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364582107] [2022-11-25 17:56:36,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:56:36,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:56:36,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:36,765 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 17:56:36,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:56:36,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364582107] [2022-11-25 17:56:36,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364582107] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:56:36,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334275975] [2022-11-25 17:56:36,767 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:56:36,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:56:36,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ee6e11-7b9e-4d33-a638-16f26f8ed3bb/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:56:36,771 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ee6e11-7b9e-4d33-a638-16f26f8ed3bb/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:56:36,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ee6e11-7b9e-4d33-a638-16f26f8ed3bb/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 17:56:36,882 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-25 17:56:36,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:56:36,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 17:56:36,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:56:36,906 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 17:56:36,907 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:56:36,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334275975] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:56:36,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:56:36,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-11-25 17:56:36,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465749574] [2022-11-25 17:56:36,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:56:36,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:56:36,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:56:36,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:56:36,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:56:36,960 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 840 [2022-11-25 17:56:36,961 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 75 transitions, 362 flow. Second operand has 3 states, 3 states have (on average 326.0) internal successors, (978), 3 states have internal predecessors, (978), 0 states have call successors, (0), 0 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 17:56:36,962 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:56:36,962 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 840 [2022-11-25 17:56:36,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:56:43,803 INFO L130 PetriNetUnfolder]: 24781/32446 cut-off events. [2022-11-25 17:56:43,803 INFO L131 PetriNetUnfolder]: For 247/247 co-relation queries the response was YES. [2022-11-25 17:56:43,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66475 conditions, 32446 events. 24781/32446 cut-off events. For 247/247 co-relation queries the response was YES. Maximal size of possible extension queue 1567. Compared 162961 event pairs, 18785 based on Foata normal form. 4/11104 useless extension candidates. Maximal degree in co-relation 66463. Up to 32446 conditions per place. [2022-11-25 17:56:43,988 INFO L137 encePairwiseOnDemand]: 835/840 looper letters, 70 selfloop transitions, 1 changer transitions 0/71 dead transitions. [2022-11-25 17:56:43,988 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 71 transitions, 464 flow [2022-11-25 17:56:43,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:56:43,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:56:43,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1022 transitions. [2022-11-25 17:56:43,992 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40555555555555556 [2022-11-25 17:56:43,992 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1022 transitions. [2022-11-25 17:56:43,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1022 transitions. [2022-11-25 17:56:43,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:56:43,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1022 transitions. [2022-11-25 17:56:43,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 340.6666666666667) internal successors, (1022), 3 states have internal predecessors, (1022), 0 states have call successors, (0), 0 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 17:56:44,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 840.0) internal successors, (3360), 4 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:56:44,004 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 840.0) internal successors, (3360), 4 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:56:44,004 INFO L175 Difference]: Start difference. First operand has 56 places, 75 transitions, 362 flow. Second operand 3 states and 1022 transitions. [2022-11-25 17:56:44,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 71 transitions, 464 flow [2022-11-25 17:56:44,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 71 transitions, 365 flow, removed 16 selfloop flow, removed 5 redundant places. [2022-11-25 17:56:44,008 INFO L231 Difference]: Finished difference. Result has 49 places, 71 transitions, 225 flow [2022-11-25 17:56:44,008 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=840, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=225, PETRI_PLACES=49, PETRI_TRANSITIONS=71} [2022-11-25 17:56:44,010 INFO L288 CegarLoopForPetriNet]: 68 programPoint places, -19 predicate places. [2022-11-25 17:56:44,010 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 71 transitions, 225 flow [2022-11-25 17:56:44,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 326.0) internal successors, (978), 3 states have internal predecessors, (978), 0 states have call successors, (0), 0 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 17:56:44,011 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:56:44,011 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:56:44,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ee6e11-7b9e-4d33-a638-16f26f8ed3bb/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 17:56:44,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ee6e11-7b9e-4d33-a638-16f26f8ed3bb/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:56:44,218 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-25 17:56:44,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:56:44,218 INFO L85 PathProgramCache]: Analyzing trace with hash -573740431, now seen corresponding path program 1 times [2022-11-25 17:56:44,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:56:44,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510596592] [2022-11-25 17:56:44,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:56:44,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:56:44,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:44,427 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 17:56:44,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:56:44,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510596592] [2022-11-25 17:56:44,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510596592] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:56:44,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:56:44,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:56:44,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443531431] [2022-11-25 17:56:44,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:56:44,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:56:44,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:56:44,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:56:44,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:56:44,447 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 327 out of 840 [2022-11-25 17:56:44,452 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 71 transitions, 225 flow. Second operand has 3 states, 3 states have (on average 329.3333333333333) internal successors, (988), 3 states have internal predecessors, (988), 0 states have call successors, (0), 0 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 17:56:44,452 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:56:44,452 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 327 of 840 [2022-11-25 17:56:44,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:56:54,562 INFO L130 PetriNetUnfolder]: 41031/53706 cut-off events. [2022-11-25 17:56:54,562 INFO L131 PetriNetUnfolder]: For 640/640 co-relation queries the response was YES. [2022-11-25 17:56:54,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109824 conditions, 53706 events. 41031/53706 cut-off events. For 640/640 co-relation queries the response was YES. Maximal size of possible extension queue 2371. Compared 300094 event pairs, 13505 based on Foata normal form. 0/18761 useless extension candidates. Maximal degree in co-relation 109815. Up to 35661 conditions per place. [2022-11-25 17:56:54,831 INFO L137 encePairwiseOnDemand]: 833/840 looper letters, 95 selfloop transitions, 4 changer transitions 0/99 dead transitions. [2022-11-25 17:56:54,831 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 99 transitions, 485 flow [2022-11-25 17:56:54,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:56:54,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:56:54,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1055 transitions. [2022-11-25 17:56:54,848 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41865079365079366 [2022-11-25 17:56:54,849 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1055 transitions. [2022-11-25 17:56:54,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1055 transitions. [2022-11-25 17:56:54,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:56:54,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1055 transitions. [2022-11-25 17:56:54,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 351.6666666666667) internal successors, (1055), 3 states have internal predecessors, (1055), 0 states have call successors, (0), 0 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 17:56:54,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 840.0) internal successors, (3360), 4 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:56:54,869 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 840.0) internal successors, (3360), 4 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:56:54,869 INFO L175 Difference]: Start difference. First operand has 49 places, 71 transitions, 225 flow. Second operand 3 states and 1055 transitions. [2022-11-25 17:56:54,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 99 transitions, 485 flow [2022-11-25 17:56:54,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 99 transitions, 484 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:56:54,874 INFO L231 Difference]: Finished difference. Result has 51 places, 74 transitions, 254 flow [2022-11-25 17:56:54,874 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=840, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=254, PETRI_PLACES=51, PETRI_TRANSITIONS=74} [2022-11-25 17:56:54,877 INFO L288 CegarLoopForPetriNet]: 68 programPoint places, -17 predicate places. [2022-11-25 17:56:54,877 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 74 transitions, 254 flow [2022-11-25 17:56:54,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 329.3333333333333) internal successors, (988), 3 states have internal predecessors, (988), 0 states have call successors, (0), 0 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 17:56:54,882 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:56:54,883 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:56:54,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 17:56:54,883 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-25 17:56:54,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:56:54,884 INFO L85 PathProgramCache]: Analyzing trace with hash -573740456, now seen corresponding path program 1 times [2022-11-25 17:56:54,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:56:54,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938021640] [2022-11-25 17:56:54,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:56:54,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:56:54,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:54,969 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 17:56:54,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:56:54,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938021640] [2022-11-25 17:56:54,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938021640] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:56:54,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:56:54,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:56:54,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205031049] [2022-11-25 17:56:54,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:56:54,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:56:54,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:56:54,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:56:54,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:56:54,992 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 840 [2022-11-25 17:56:54,993 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 74 transitions, 254 flow. Second operand has 3 states, 3 states have (on average 328.3333333333333) internal successors, (985), 3 states have internal predecessors, (985), 0 states have call successors, (0), 0 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 17:56:54,994 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:56:54,994 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 840 [2022-11-25 17:56:54,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand