./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f 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_28ae35b1-9f92-4ba5-ab0f-e858c55fb7d0/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ae35b1-9f92-4ba5-ab0f-e858c55fb7d0/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ae35b1-9f92-4ba5-ab0f-e858c55fb7d0/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ae35b1-9f92-4ba5-ab0f-e858c55fb7d0/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ae35b1-9f92-4ba5-ab0f-e858c55fb7d0/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ae35b1-9f92-4ba5-ab0f-e858c55fb7d0/bin/uautomizer-tPACEb0tL8 --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 df820220e47314ad1ae7e5e69c959ff16aa366a463fd9290864972c0f85d142a --- 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-e04fb08 [2022-11-16 12:45:53,625 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:45:53,627 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:45:53,649 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:45:53,649 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:45:53,651 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:45:53,652 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:45:53,654 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:45:53,656 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:45:53,657 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:45:53,658 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:45:53,659 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:45:53,659 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:45:53,660 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:45:53,661 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:45:53,663 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:45:53,664 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:45:53,665 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:45:53,666 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:45:53,668 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:45:53,670 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:45:53,671 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:45:53,673 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:45:53,674 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:45:53,677 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:45:53,678 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:45:53,678 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:45:53,679 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:45:53,680 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:45:53,681 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:45:53,681 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:45:53,682 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:45:53,683 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:45:53,683 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:45:53,684 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:45:53,685 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:45:53,685 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:45:53,686 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:45:53,686 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:45:53,687 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:45:53,688 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:45:53,688 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ae35b1-9f92-4ba5-ab0f-e858c55fb7d0/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 12:45:53,712 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:45:53,712 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:45:53,712 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:45:53,713 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:45:53,713 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:45:53,713 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:45:53,714 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:45:53,714 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:45:53,715 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:45:53,715 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:45:53,715 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:45:53,715 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:45:53,715 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:45:53,716 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:45:53,716 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:45:53,716 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:45:53,716 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:45:53,716 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:45:53,717 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 12:45:53,717 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:45:53,717 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:45:53,717 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:45:53,717 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:45:53,718 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:45:53,718 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:45:53,718 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:45:53,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:45:53,719 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:45:53,720 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:45:53,720 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:45:53,721 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:45:53,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:45:53,721 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:45:53,721 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:45:53,722 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:45:53,722 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_28ae35b1-9f92-4ba5-ab0f-e858c55fb7d0/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ae35b1-9f92-4ba5-ab0f-e858c55fb7d0/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> df820220e47314ad1ae7e5e69c959ff16aa366a463fd9290864972c0f85d142a [2022-11-16 12:45:53,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:45:53,999 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:45:54,002 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:45:54,003 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:45:54,004 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:45:54,005 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ae35b1-9f92-4ba5-ab0f-e858c55fb7d0/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c [2022-11-16 12:45:54,086 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ae35b1-9f92-4ba5-ab0f-e858c55fb7d0/bin/uautomizer-tPACEb0tL8/data/dc66bc77e/8f734dac5a184edaa3c1578d2334657b/FLAG02534b92c [2022-11-16 12:45:54,661 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:45:54,661 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ae35b1-9f92-4ba5-ab0f-e858c55fb7d0/sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c [2022-11-16 12:45:54,672 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ae35b1-9f92-4ba5-ab0f-e858c55fb7d0/bin/uautomizer-tPACEb0tL8/data/dc66bc77e/8f734dac5a184edaa3c1578d2334657b/FLAG02534b92c [2022-11-16 12:45:54,987 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ae35b1-9f92-4ba5-ab0f-e858c55fb7d0/bin/uautomizer-tPACEb0tL8/data/dc66bc77e/8f734dac5a184edaa3c1578d2334657b [2022-11-16 12:45:54,992 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:45:54,994 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:45:54,996 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:45:54,997 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:45:55,000 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:45:55,002 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:45:54" (1/1) ... [2022-11-16 12:45:55,004 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fa79ae1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:45:55, skipping insertion in model container [2022-11-16 12:45:55,004 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:45:54" (1/1) ... [2022-11-16 12:45:55,014 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:45:55,052 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:45:55,324 WARN L229 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_28ae35b1-9f92-4ba5-ab0f-e858c55fb7d0/sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c[4099,4112] [2022-11-16 12:45:55,345 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:45:55,353 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:45:55,409 WARN L229 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_28ae35b1-9f92-4ba5-ab0f-e858c55fb7d0/sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c[4099,4112] [2022-11-16 12:45:55,414 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:45:55,430 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:45:55,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:45:55 WrapperNode [2022-11-16 12:45:55,430 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:45:55,431 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:45:55,432 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:45:55,432 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:45:55,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:45:55" (1/1) ... [2022-11-16 12:45:55,449 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:45:55" (1/1) ... [2022-11-16 12:45:55,487 INFO L138 Inliner]: procedures = 27, calls = 76, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 349 [2022-11-16 12:45:55,488 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:45:55,489 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:45:55,489 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:45:55,489 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:45:55,504 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:45:55" (1/1) ... [2022-11-16 12:45:55,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:45:55" (1/1) ... [2022-11-16 12:45:55,519 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:45:55" (1/1) ... [2022-11-16 12:45:55,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:45:55" (1/1) ... [2022-11-16 12:45:55,535 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:45:55" (1/1) ... [2022-11-16 12:45:55,540 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:45:55" (1/1) ... [2022-11-16 12:45:55,543 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:45:55" (1/1) ... [2022-11-16 12:45:55,560 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:45:55" (1/1) ... [2022-11-16 12:45:55,565 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:45:55,566 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:45:55,566 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:45:55,566 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:45:55,571 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:45:55" (1/1) ... [2022-11-16 12:45:55,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:45:55,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ae35b1-9f92-4ba5-ab0f-e858c55fb7d0/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:45:55,613 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ae35b1-9f92-4ba5-ab0f-e858c55fb7d0/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:45:55,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ae35b1-9f92-4ba5-ab0f-e858c55fb7d0/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:45:55,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:45:55,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:45:55,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:45:55,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:45:55,661 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 12:45:55,662 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 12:45:55,663 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 12:45:55,664 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 12:45:55,664 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 12:45:55,664 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 12:45:55,665 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-16 12:45:55,665 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-16 12:45:55,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:45:55,665 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 12:45:55,665 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 12:45:55,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:45:55,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:45:55,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:45:55,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:45:55,668 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:45:55,853 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:45:55,855 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:45:56,475 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:45:57,157 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:45:57,157 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-16 12:45:57,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:45:57 BoogieIcfgContainer [2022-11-16 12:45:57,160 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:45:57,162 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:45:57,162 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:45:57,166 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:45:57,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:45:54" (1/3) ... [2022-11-16 12:45:57,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2304e509 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:45:57, skipping insertion in model container [2022-11-16 12:45:57,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:45:55" (2/3) ... [2022-11-16 12:45:57,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2304e509 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:45:57, skipping insertion in model container [2022-11-16 12:45:57,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:45:57" (3/3) ... [2022-11-16 12:45:57,169 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult2.wvr.c [2022-11-16 12:45:57,178 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:45:57,188 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:45:57,189 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2022-11-16 12:45:57,189 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:45:57,408 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-16 12:45:57,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 257 places, 262 transitions, 556 flow [2022-11-16 12:45:57,637 INFO L130 PetriNetUnfolder]: 18/258 cut-off events. [2022-11-16 12:45:57,638 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-16 12:45:57,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 258 events. 18/258 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 273 event pairs, 0 based on Foata normal form. 0/210 useless extension candidates. Maximal degree in co-relation 212. Up to 2 conditions per place. [2022-11-16 12:45:57,646 INFO L82 GeneralOperation]: Start removeDead. Operand has 257 places, 262 transitions, 556 flow [2022-11-16 12:45:57,656 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 231 places, 235 transitions, 491 flow [2022-11-16 12:45:57,674 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:45:57,684 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;@4139df9c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:45:57,684 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2022-11-16 12:45:57,711 INFO L130 PetriNetUnfolder]: 3/85 cut-off events. [2022-11-16 12:45:57,715 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:45:57,716 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:45:57,716 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:45:57,717 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-16 12:45:57,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:45:57,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1053410759, now seen corresponding path program 1 times [2022-11-16 12:45:57,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:45:57,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834927028] [2022-11-16 12:45:57,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:45:57,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:45:57,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:45:58,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:45:58,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:45:58,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834927028] [2022-11-16 12:45:58,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834927028] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:45:58,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:45:58,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:45:58,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357936809] [2022-11-16 12:45:58,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:45:58,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:45:58,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:45:58,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:45:58,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:45:58,288 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 262 [2022-11-16 12:45:58,297 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 235 transitions, 491 flow. Second operand has 4 states, 4 states have (on average 188.5) internal successors, (754), 4 states have internal predecessors, (754), 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) [2022-11-16 12:45:58,301 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:45:58,301 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 262 [2022-11-16 12:45:58,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:46:08,244 INFO L130 PetriNetUnfolder]: 23681/32767 cut-off events. [2022-11-16 12:46:08,244 INFO L131 PetriNetUnfolder]: For 5360/5368 co-relation queries the response was YES. [2022-11-16 12:46:08,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64022 conditions, 32767 events. 23681/32767 cut-off events. For 5360/5368 co-relation queries the response was YES. Maximal size of possible extension queue 1702. Compared 197127 event pairs, 11436 based on Foata normal form. 4922/15191 useless extension candidates. Maximal degree in co-relation 31432. Up to 14260 conditions per place. [2022-11-16 12:46:08,578 INFO L137 encePairwiseOnDemand]: 230/262 looper letters, 90 selfloop transitions, 9 changer transitions 5/262 dead transitions. [2022-11-16 12:46:08,578 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 262 transitions, 764 flow [2022-11-16 12:46:08,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:46:08,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:46:08,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1072 transitions. [2022-11-16 12:46:08,602 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8183206106870229 [2022-11-16 12:46:08,604 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1072 transitions. [2022-11-16 12:46:08,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1072 transitions. [2022-11-16 12:46:08,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:46:08,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1072 transitions. [2022-11-16 12:46:08,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 214.4) internal successors, (1072), 5 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:08,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 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) [2022-11-16 12:46:08,632 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 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) [2022-11-16 12:46:08,634 INFO L175 Difference]: Start difference. First operand has 231 places, 235 transitions, 491 flow. Second operand 5 states and 1072 transitions. [2022-11-16 12:46:08,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 262 transitions, 764 flow [2022-11-16 12:46:08,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 262 transitions, 738 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-16 12:46:08,660 INFO L231 Difference]: Finished difference. Result has 223 places, 218 transitions, 497 flow [2022-11-16 12:46:08,662 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=497, PETRI_PLACES=223, PETRI_TRANSITIONS=218} [2022-11-16 12:46:08,668 INFO L288 CegarLoopForPetriNet]: 231 programPoint places, -8 predicate places. [2022-11-16 12:46:08,669 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 218 transitions, 497 flow [2022-11-16 12:46:08,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 188.5) internal successors, (754), 4 states have internal predecessors, (754), 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) [2022-11-16 12:46:08,670 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:46:08,671 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:46:08,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:46:08,671 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-16 12:46:08,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:46:08,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1857108462, now seen corresponding path program 1 times [2022-11-16 12:46:08,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:46:08,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152384267] [2022-11-16 12:46:08,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:46:08,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:46:08,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:08,876 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:46:08,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:46:08,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152384267] [2022-11-16 12:46:08,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152384267] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:46:08,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101778292] [2022-11-16 12:46:08,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:46:08,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:46:08,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ae35b1-9f92-4ba5-ab0f-e858c55fb7d0/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:46:08,881 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ae35b1-9f92-4ba5-ab0f-e858c55fb7d0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:46:08,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ae35b1-9f92-4ba5-ab0f-e858c55fb7d0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:46:09,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:09,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:46:09,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:46:09,243 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:46:09,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:46:09,305 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:46:09,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1101778292] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:46:09,306 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:46:09,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-16 12:46:09,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475911754] [2022-11-16 12:46:09,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:46:09,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:46:09,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:46:09,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:46:09,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:46:09,312 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 262 [2022-11-16 12:46:09,315 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 218 transitions, 497 flow. Second operand has 12 states, 12 states have (on average 189.66666666666666) internal successors, (2276), 12 states have internal predecessors, (2276), 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) [2022-11-16 12:46:09,315 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:46:09,315 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 262 [2022-11-16 12:46:09,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:46:28,041 INFO L130 PetriNetUnfolder]: 59201/81770 cut-off events. [2022-11-16 12:46:28,041 INFO L131 PetriNetUnfolder]: For 4017/4037 co-relation queries the response was YES. [2022-11-16 12:46:28,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155749 conditions, 81770 events. 59201/81770 cut-off events. For 4017/4037 co-relation queries the response was YES. Maximal size of possible extension queue 1946. Compared 514279 event pairs, 28590 based on Foata normal form. 6/25556 useless extension candidates. Maximal degree in co-relation 124380. Up to 14253 conditions per place. [2022-11-16 12:46:28,940 INFO L137 encePairwiseOnDemand]: 247/262 looper letters, 201 selfloop transitions, 40 changer transitions 0/399 dead transitions. [2022-11-16 12:46:28,940 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 399 transitions, 1423 flow [2022-11-16 12:46:28,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:46:28,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 12:46:28,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3613 transitions. [2022-11-16 12:46:28,950 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7661153519932146 [2022-11-16 12:46:28,951 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3613 transitions. [2022-11-16 12:46:28,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3613 transitions. [2022-11-16 12:46:28,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:46:28,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3613 transitions. [2022-11-16 12:46:28,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 200.72222222222223) internal successors, (3613), 18 states have internal predecessors, (3613), 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) [2022-11-16 12:46:28,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 262.0) internal successors, (4978), 19 states have internal predecessors, (4978), 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) [2022-11-16 12:46:28,977 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 262.0) internal successors, (4978), 19 states have internal predecessors, (4978), 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) [2022-11-16 12:46:28,977 INFO L175 Difference]: Start difference. First operand has 223 places, 218 transitions, 497 flow. Second operand 18 states and 3613 transitions. [2022-11-16 12:46:28,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 399 transitions, 1423 flow [2022-11-16 12:46:28,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 399 transitions, 1418 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:46:28,992 INFO L231 Difference]: Finished difference. Result has 238 places, 245 transitions, 730 flow [2022-11-16 12:46:28,993 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=730, PETRI_PLACES=238, PETRI_TRANSITIONS=245} [2022-11-16 12:46:28,994 INFO L288 CegarLoopForPetriNet]: 231 programPoint places, 7 predicate places. [2022-11-16 12:46:28,994 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 245 transitions, 730 flow [2022-11-16 12:46:28,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 189.66666666666666) internal successors, (2276), 12 states have internal predecessors, (2276), 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) [2022-11-16 12:46:28,996 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:46:28,997 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:46:29,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ae35b1-9f92-4ba5-ab0f-e858c55fb7d0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:46:29,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ae35b1-9f92-4ba5-ab0f-e858c55fb7d0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:46:29,208 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-16 12:46:29,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:46:29,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1735786597, now seen corresponding path program 1 times [2022-11-16 12:46:29,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:46:29,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367000195] [2022-11-16 12:46:29,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:46:29,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:46:29,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:29,361 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:46:29,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:46:29,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367000195] [2022-11-16 12:46:29,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367000195] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:46:29,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202042938] [2022-11-16 12:46:29,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:46:29,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:46:29,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ae35b1-9f92-4ba5-ab0f-e858c55fb7d0/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:46:29,364 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ae35b1-9f92-4ba5-ab0f-e858c55fb7d0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:46:29,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ae35b1-9f92-4ba5-ab0f-e858c55fb7d0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:46:29,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:29,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:46:29,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:46:29,598 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:46:29,599 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:46:29,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202042938] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:46:29,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:46:29,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 12:46:29,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908446479] [2022-11-16 12:46:29,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:46:29,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:46:29,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:46:29,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:46:29,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:46:29,604 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 262 [2022-11-16 12:46:29,605 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 245 transitions, 730 flow. Second operand has 6 states, 6 states have (on average 189.33333333333334) internal successors, (1136), 6 states have internal predecessors, (1136), 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) [2022-11-16 12:46:29,606 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:46:29,606 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 262 [2022-11-16 12:46:29,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand