./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.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_d1b38c4c-2731-423a-a6fe-9712f20a7bce/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b38c4c-2731-423a-a6fe-9712f20a7bce/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_d1b38c4c-2731-423a-a6fe-9712f20a7bce/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b38c4c-2731-423a-a6fe-9712f20a7bce/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b38c4c-2731-423a-a6fe-9712f20a7bce/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_d1b38c4c-2731-423a-a6fe-9712f20a7bce/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 f484a00c18d1df7ceedc12992e35584262ebeacdaf88de41be4bc57f4fb5401d --- 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 17:23:47,637 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:23:47,640 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:23:47,670 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:23:47,670 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:23:47,672 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:23:47,673 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:23:47,675 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:23:47,677 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:23:47,679 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:23:47,680 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:23:47,681 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:23:47,682 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:23:47,689 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:23:47,691 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:23:47,692 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:23:47,693 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:23:47,697 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:23:47,698 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:23:47,702 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:23:47,711 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:23:47,713 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:23:47,714 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:23:47,715 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:23:47,718 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:23:47,729 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:23:47,729 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:23:47,730 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:23:47,731 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:23:47,732 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:23:47,732 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:23:47,733 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:23:47,734 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:23:47,734 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:23:47,735 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:23:47,736 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:23:47,736 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:23:47,737 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:23:47,737 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:23:47,741 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:23:47,742 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:23:47,743 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b38c4c-2731-423a-a6fe-9712f20a7bce/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-25 17:23:47,776 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:23:47,785 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:23:47,786 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:23:47,786 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:23:47,787 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:23:47,787 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:23:47,788 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:23:47,788 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:23:47,789 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:23:47,789 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:23:47,790 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:23:47,790 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:23:47,791 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:23:47,791 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:23:47,791 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:23:47,791 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:23:47,791 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:23:47,792 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:23:47,792 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 17:23:47,792 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:23:47,792 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:23:47,792 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:23:47,793 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:23:47,793 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:23:47,793 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:23:47,793 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:23:47,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:23:47,794 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:23:47,794 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:23:47,795 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:23:47,795 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:23:47,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:23:47,795 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:23:47,796 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:23:47,796 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:23:47,796 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:23:47,796 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_d1b38c4c-2731-423a-a6fe-9712f20a7bce/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b38c4c-2731-423a-a6fe-9712f20a7bce/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f484a00c18d1df7ceedc12992e35584262ebeacdaf88de41be4bc57f4fb5401d [2022-11-25 17:23:48,084 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:23:48,114 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:23:48,117 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:23:48,118 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:23:48,119 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:23:48,120 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b38c4c-2731-423a-a6fe-9712f20a7bce/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2022-11-25 17:23:51,373 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:23:51,645 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:23:51,646 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b38c4c-2731-423a-a6fe-9712f20a7bce/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2022-11-25 17:23:51,653 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b38c4c-2731-423a-a6fe-9712f20a7bce/bin/uautomizer-ZsLfNo2U6R/data/bbb651871/927045916bfd4c3394dd98bf54eaace4/FLAG02b3bb91c [2022-11-25 17:23:51,668 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b38c4c-2731-423a-a6fe-9712f20a7bce/bin/uautomizer-ZsLfNo2U6R/data/bbb651871/927045916bfd4c3394dd98bf54eaace4 [2022-11-25 17:23:51,671 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:23:51,672 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:23:51,674 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:23:51,674 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:23:51,678 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:23:51,679 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:23:51" (1/1) ... [2022-11-25 17:23:51,680 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ec19a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:23:51, skipping insertion in model container [2022-11-25 17:23:51,681 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:23:51" (1/1) ... [2022-11-25 17:23:51,689 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:23:51,714 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:23:51,877 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:23:51,884 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:23:51,884 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:23:51,886 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:23:51,886 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:23:51,888 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:23:51,888 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:23:51,890 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:23:51,891 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:23:51,893 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:23:51,893 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:23:51,895 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:23:51,899 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:23:51,901 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:23:51,902 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:23:51,903 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:23:51,905 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:23:51,907 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:23:51,908 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:23:51,909 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:23:51,911 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:23:51,912 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:23:51,913 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:23:51,915 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:23:51,926 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_d1b38c4c-2731-423a-a6fe-9712f20a7bce/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c[5846,5859] [2022-11-25 17:23:51,932 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:23:51,943 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:23:51,959 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:23:51,960 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:23:51,961 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:23:51,962 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:23:51,962 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:23:51,963 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:23:51,963 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:23:51,965 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:23:51,965 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:23:51,967 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:23:51,967 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:23:51,968 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:23:51,969 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:23:51,971 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:23:51,971 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:23:51,973 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:23:51,974 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:23:51,975 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:23:51,976 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:23:51,977 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:23:51,978 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:23:51,979 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:23:51,980 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:23:51,981 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:23:51,989 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_d1b38c4c-2731-423a-a6fe-9712f20a7bce/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c[5846,5859] [2022-11-25 17:23:51,993 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:23:52,009 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:23:52,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:23:52 WrapperNode [2022-11-25 17:23:52,010 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:23:52,011 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:23:52,011 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:23:52,012 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:23:52,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:23:52" (1/1) ... [2022-11-25 17:23:52,031 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:23:52" (1/1) ... [2022-11-25 17:23:52,076 INFO L138 Inliner]: procedures = 26, calls = 93, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 488 [2022-11-25 17:23:52,090 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:23:52,090 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:23:52,091 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:23:52,091 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:23:52,101 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:23:52" (1/1) ... [2022-11-25 17:23:52,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:23:52" (1/1) ... [2022-11-25 17:23:52,121 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:23:52" (1/1) ... [2022-11-25 17:23:52,121 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:23:52" (1/1) ... [2022-11-25 17:23:52,133 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:23:52" (1/1) ... [2022-11-25 17:23:52,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:23:52" (1/1) ... [2022-11-25 17:23:52,164 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:23:52" (1/1) ... [2022-11-25 17:23:52,166 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:23:52" (1/1) ... [2022-11-25 17:23:52,170 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:23:52,179 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:23:52,179 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:23:52,179 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:23:52,180 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:23:52" (1/1) ... [2022-11-25 17:23:52,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:23:52,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b38c4c-2731-423a-a6fe-9712f20a7bce/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:23:52,219 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b38c4c-2731-423a-a6fe-9712f20a7bce/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:23:52,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b38c4c-2731-423a-a6fe-9712f20a7bce/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:23:52,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:23:52,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:23:52,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:23:52,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 17:23:52,262 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 17:23:52,262 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 17:23:52,262 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 17:23:52,262 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 17:23:52,263 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-25 17:23:52,263 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-25 17:23:52,263 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-25 17:23:52,263 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-25 17:23:52,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:23:52,263 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 17:23:52,263 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 17:23:52,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 17:23:52,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:23:52,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:23:52,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:23:52,266 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 17:23:52,411 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:23:52,413 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:23:53,461 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:23:54,044 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:23:54,044 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-11-25 17:23:54,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:23:54 BoogieIcfgContainer [2022-11-25 17:23:54,049 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:23:54,055 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:23:54,055 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:23:54,059 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:23:54,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:23:51" (1/3) ... [2022-11-25 17:23:54,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58c9cf38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:23:54, skipping insertion in model container [2022-11-25 17:23:54,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:23:52" (2/3) ... [2022-11-25 17:23:54,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58c9cf38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:23:54, skipping insertion in model container [2022-11-25 17:23:54,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:23:54" (3/3) ... [2022-11-25 17:23:54,065 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-commit-2.wvr.c [2022-11-25 17:23:54,076 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 17:23:54,087 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:23:54,088 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2022-11-25 17:23:54,088 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:23:54,296 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-25 17:23:54,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 355 places, 367 transitions, 766 flow [2022-11-25 17:23:54,635 INFO L130 PetriNetUnfolder]: 25/363 cut-off events. [2022-11-25 17:23:54,635 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-25 17:23:54,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 380 conditions, 363 events. 25/363 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 330 event pairs, 0 based on Foata normal form. 0/306 useless extension candidates. Maximal degree in co-relation 320. Up to 2 conditions per place. [2022-11-25 17:23:54,646 INFO L82 GeneralOperation]: Start removeDead. Operand has 355 places, 367 transitions, 766 flow [2022-11-25 17:23:54,661 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 329 places, 340 transitions, 701 flow [2022-11-25 17:23:54,669 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:23:54,708 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 329 places, 340 transitions, 701 flow [2022-11-25 17:23:54,715 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 329 places, 340 transitions, 701 flow [2022-11-25 17:23:54,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 329 places, 340 transitions, 701 flow [2022-11-25 17:23:54,790 INFO L130 PetriNetUnfolder]: 24/340 cut-off events. [2022-11-25 17:23:54,790 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 17:23:54,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 356 conditions, 340 events. 24/340 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 330 event pairs, 0 based on Foata normal form. 0/284 useless extension candidates. Maximal degree in co-relation 320. Up to 2 conditions per place. [2022-11-25 17:23:54,798 INFO L119 LiptonReduction]: Number of co-enabled transitions 5184 [2022-11-25 17:24:17,178 INFO L134 LiptonReduction]: Checked pairs total: 16602 [2022-11-25 17:24:17,178 INFO L136 LiptonReduction]: Total number of compositions: 367 [2022-11-25 17:24:17,194 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:24:17,201 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;@444d8515, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:24:17,201 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2022-11-25 17:24:17,204 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-11-25 17:24:17,205 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:24:17,205 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:24:17,206 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 17:24:17,206 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 17:24:17,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:24:17,212 INFO L85 PathProgramCache]: Analyzing trace with hash 61906, now seen corresponding path program 1 times [2022-11-25 17:24:17,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:24:17,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888383825] [2022-11-25 17:24:17,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:24:17,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:24:17,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:24:17,599 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 17:24:17,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:24:17,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888383825] [2022-11-25 17:24:17,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888383825] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:24:17,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:24:17,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:24:17,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81028993] [2022-11-25 17:24:17,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:24:17,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:24:17,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:24:17,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:24:17,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:24:17,724 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 734 [2022-11-25 17:24:17,728 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 71 transitions, 163 flow. Second operand has 3 states, 3 states have (on average 293.6666666666667) internal successors, (881), 3 states have internal predecessors, (881), 0 states have call successors, (0), 0 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 17:24:17,728 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:24:17,729 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 734 [2022-11-25 17:24:17,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:24:24,735 INFO L130 PetriNetUnfolder]: 28951/37701 cut-off events. [2022-11-25 17:24:24,735 INFO L131 PetriNetUnfolder]: For 972/972 co-relation queries the response was YES. [2022-11-25 17:24:24,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77334 conditions, 37701 events. 28951/37701 cut-off events. For 972/972 co-relation queries the response was YES. Maximal size of possible extension queue 1417. Compared 188292 event pairs, 23504 based on Foata normal form. 0/18869 useless extension candidates. Maximal degree in co-relation 36140. Up to 18856 conditions per place. [2022-11-25 17:24:25,000 INFO L137 encePairwiseOnDemand]: 706/734 looper letters, 101 selfloop transitions, 8 changer transitions 0/109 dead transitions. [2022-11-25 17:24:25,000 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 109 transitions, 478 flow [2022-11-25 17:24:25,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:24:25,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:24:25,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1020 transitions. [2022-11-25 17:24:25,027 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46321525885558584 [2022-11-25 17:24:25,028 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1020 transitions. [2022-11-25 17:24:25,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1020 transitions. [2022-11-25 17:24:25,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:24:25,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1020 transitions. [2022-11-25 17:24:25,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 340.0) internal successors, (1020), 3 states have internal predecessors, (1020), 0 states have call successors, (0), 0 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 17:24:25,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 734.0) internal successors, (2936), 4 states have internal predecessors, (2936), 0 states have call successors, (0), 0 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 17:24:25,062 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 734.0) internal successors, (2936), 4 states have internal predecessors, (2936), 0 states have call successors, (0), 0 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 17:24:25,065 INFO L175 Difference]: Start difference. First operand has 76 places, 71 transitions, 163 flow. Second operand 3 states and 1020 transitions. [2022-11-25 17:24:25,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 109 transitions, 478 flow [2022-11-25 17:24:25,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 109 transitions, 452 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-25 17:24:25,141 INFO L231 Difference]: Finished difference. Result has 61 places, 66 transitions, 202 flow [2022-11-25 17:24:25,143 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=734, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=61, PETRI_TRANSITIONS=66} [2022-11-25 17:24:25,147 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, -15 predicate places. [2022-11-25 17:24:25,147 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 66 transitions, 202 flow [2022-11-25 17:24:25,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 293.6666666666667) internal successors, (881), 3 states have internal predecessors, (881), 0 states have call successors, (0), 0 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 17:24:25,148 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:24:25,149 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 17:24:25,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:24:25,149 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-25 17:24:25,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:24:25,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1923412, now seen corresponding path program 1 times [2022-11-25 17:24:25,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:24:25,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286837446] [2022-11-25 17:24:25,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:24:25,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:24:25,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:24:25,292 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 17:24:25,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:24:25,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286837446] [2022-11-25 17:24:25,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286837446] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:24:25,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380537389] [2022-11-25 17:24:25,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:24:25,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:24:25,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b38c4c-2731-423a-a6fe-9712f20a7bce/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:24:25,297 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b38c4c-2731-423a-a6fe-9712f20a7bce/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:24:25,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b38c4c-2731-423a-a6fe-9712f20a7bce/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 17:24:25,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:24:25,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 17:24:25,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:24:25,600 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 17:24:25,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:24:25,618 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 17:24:25,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380537389] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:24:25,618 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:24:25,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-11-25 17:24:25,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671572166] [2022-11-25 17:24:25,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:24:25,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:24:25,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:24:25,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:24:25,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:24:25,772 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 734 [2022-11-25 17:24:25,775 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 66 transitions, 202 flow. Second operand has 7 states, 7 states have (on average 294.14285714285717) internal successors, (2059), 7 states have internal predecessors, (2059), 0 states have call successors, (0), 0 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 17:24:25,776 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:24:25,776 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 734 [2022-11-25 17:24:25,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:24:39,121 INFO L130 PetriNetUnfolder]: 72388/94251 cut-off events. [2022-11-25 17:24:39,122 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:24:39,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192224 conditions, 94251 events. 72388/94251 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3027. Compared 519689 event pairs, 58760 based on Foata normal form. 0/47191 useless extension candidates. Maximal degree in co-relation 153655. Up to 18855 conditions per place. [2022-11-25 17:24:39,793 INFO L137 encePairwiseOnDemand]: 718/734 looper letters, 226 selfloop transitions, 45 changer transitions 0/271 dead transitions. [2022-11-25 17:24:39,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 271 transitions, 1270 flow [2022-11-25 17:24:39,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:24:39,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 17:24:39,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2334 transitions. [2022-11-25 17:24:39,804 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4542623588945115 [2022-11-25 17:24:39,805 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2334 transitions. [2022-11-25 17:24:39,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2334 transitions. [2022-11-25 17:24:39,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:24:39,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2334 transitions. [2022-11-25 17:24:39,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 333.42857142857144) internal successors, (2334), 7 states have internal predecessors, (2334), 0 states have call successors, (0), 0 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 17:24:39,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 734.0) internal successors, (5872), 8 states have internal predecessors, (5872), 0 states have call successors, (0), 0 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 17:24:39,833 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 734.0) internal successors, (5872), 8 states have internal predecessors, (5872), 0 states have call successors, (0), 0 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 17:24:39,834 INFO L175 Difference]: Start difference. First operand has 61 places, 66 transitions, 202 flow. Second operand 7 states and 2334 transitions. [2022-11-25 17:24:39,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 271 transitions, 1270 flow [2022-11-25 17:24:39,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 271 transitions, 1236 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:24:39,845 INFO L231 Difference]: Finished difference. Result has 68 places, 99 transitions, 485 flow [2022-11-25 17:24:39,845 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=734, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=485, PETRI_PLACES=68, PETRI_TRANSITIONS=99} [2022-11-25 17:24:39,846 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, -8 predicate places. [2022-11-25 17:24:39,847 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 99 transitions, 485 flow [2022-11-25 17:24:39,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 294.14285714285717) internal successors, (2059), 7 states have internal predecessors, (2059), 0 states have call successors, (0), 0 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 17:24:39,849 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:24:39,849 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2022-11-25 17:24:39,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b38c4c-2731-423a-a6fe-9712f20a7bce/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 17:24:40,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b38c4c-2731-423a-a6fe-9712f20a7bce/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:24:40,058 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-25 17:24:40,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:24:40,059 INFO L85 PathProgramCache]: Analyzing trace with hash 59627538, now seen corresponding path program 1 times [2022-11-25 17:24:40,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:24:40,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311761291] [2022-11-25 17:24:40,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:24:40,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:24:40,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:24:40,191 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:24:40,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:24:40,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311761291] [2022-11-25 17:24:40,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311761291] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:24:40,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:24:40,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:24:40,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454451674] [2022-11-25 17:24:40,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:24:40,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:24:40,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:24:40,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:24:40,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:24:40,262 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 734 [2022-11-25 17:24:40,264 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 99 transitions, 485 flow. Second operand has 3 states, 3 states have (on average 294.3333333333333) internal successors, (883), 3 states have internal predecessors, (883), 0 states have call successors, (0), 0 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 17:24:40,264 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:24:40,264 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 734 [2022-11-25 17:24:40,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand