./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 b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283e1b41-6dbb-4bf2-8d9f-3b8f6e73b924/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283e1b41-6dbb-4bf2-8d9f-3b8f6e73b924/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283e1b41-6dbb-4bf2-8d9f-3b8f6e73b924/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283e1b41-6dbb-4bf2-8d9f-3b8f6e73b924/bin/uautomizer-vX5HgA9Q3a/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_283e1b41-6dbb-4bf2-8d9f-3b8f6e73b924/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283e1b41-6dbb-4bf2-8d9f-3b8f6e73b924/bin/uautomizer-vX5HgA9Q3a --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-b5237d8 [2022-11-21 16:23:03,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:23:03,711 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:23:03,755 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:23:03,755 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:23:03,759 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:23:03,762 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:23:03,765 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:23:03,767 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:23:03,773 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:23:03,774 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:23:03,775 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:23:03,775 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:23:03,776 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:23:03,777 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:23:03,779 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:23:03,780 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:23:03,780 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:23:03,782 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:23:03,784 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:23:03,786 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:23:03,793 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:23:03,795 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:23:03,796 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:23:03,810 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:23:03,811 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:23:03,811 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:23:03,813 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:23:03,814 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:23:03,815 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:23:03,815 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:23:03,816 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:23:03,818 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:23:03,819 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:23:03,821 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:23:03,821 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:23:03,822 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:23:03,823 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:23:03,823 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:23:03,824 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:23:03,825 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:23:03,825 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283e1b41-6dbb-4bf2-8d9f-3b8f6e73b924/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-21 16:23:03,868 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:23:03,868 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:23:03,869 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:23:03,869 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:23:03,870 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:23:03,871 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:23:03,871 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:23:03,872 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:23:03,872 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:23:03,872 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:23:03,874 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:23:03,874 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 16:23:03,874 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:23:03,874 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:23:03,875 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:23:03,875 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:23:03,875 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:23:03,875 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:23:03,876 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-21 16:23:03,876 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:23:03,876 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:23:03,876 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:23:03,877 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:23:03,877 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:23:03,877 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:23:03,877 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:23:03,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:23:03,878 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:23:03,879 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:23:03,879 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:23:03,879 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:23:03,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:23:03,880 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:23:03,880 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:23:03,880 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:23:03,880 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_283e1b41-6dbb-4bf2-8d9f-3b8f6e73b924/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283e1b41-6dbb-4bf2-8d9f-3b8f6e73b924/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> df820220e47314ad1ae7e5e69c959ff16aa366a463fd9290864972c0f85d142a [2022-11-21 16:23:04,237 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:23:04,276 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:23:04,279 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:23:04,280 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:23:04,281 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:23:04,282 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283e1b41-6dbb-4bf2-8d9f-3b8f6e73b924/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c [2022-11-21 16:23:07,383 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:23:07,609 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:23:07,609 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283e1b41-6dbb-4bf2-8d9f-3b8f6e73b924/sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c [2022-11-21 16:23:07,620 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283e1b41-6dbb-4bf2-8d9f-3b8f6e73b924/bin/uautomizer-vX5HgA9Q3a/data/70e4c9437/4f3be0ba088742e083a7937c795c21b6/FLAGaf766ce22 [2022-11-21 16:23:07,642 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283e1b41-6dbb-4bf2-8d9f-3b8f6e73b924/bin/uautomizer-vX5HgA9Q3a/data/70e4c9437/4f3be0ba088742e083a7937c795c21b6 [2022-11-21 16:23:07,645 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:23:07,647 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:23:07,651 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:23:07,651 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:23:07,655 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:23:07,657 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:23:07" (1/1) ... [2022-11-21 16:23:07,658 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b8265ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:23:07, skipping insertion in model container [2022-11-21 16:23:07,658 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:23:07" (1/1) ... [2022-11-21 16:23:07,668 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:23:07,708 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:23:07,983 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_283e1b41-6dbb-4bf2-8d9f-3b8f6e73b924/sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c[4099,4112] [2022-11-21 16:23:07,992 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:23:08,004 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:23:08,036 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_283e1b41-6dbb-4bf2-8d9f-3b8f6e73b924/sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c[4099,4112] [2022-11-21 16:23:08,059 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:23:08,074 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:23:08,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:23:08 WrapperNode [2022-11-21 16:23:08,075 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:23:08,076 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:23:08,076 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:23:08,076 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:23:08,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:23:08" (1/1) ... [2022-11-21 16:23:08,096 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:23:08" (1/1) ... [2022-11-21 16:23:08,135 INFO L138 Inliner]: procedures = 27, calls = 76, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 349 [2022-11-21 16:23:08,142 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:23:08,143 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:23:08,143 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:23:08,146 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:23:08,157 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:23:08" (1/1) ... [2022-11-21 16:23:08,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:23:08" (1/1) ... [2022-11-21 16:23:08,171 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:23:08" (1/1) ... [2022-11-21 16:23:08,171 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:23:08" (1/1) ... [2022-11-21 16:23:08,181 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:23:08" (1/1) ... [2022-11-21 16:23:08,203 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:23:08" (1/1) ... [2022-11-21 16:23:08,205 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:23:08" (1/1) ... [2022-11-21 16:23:08,207 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:23:08" (1/1) ... [2022-11-21 16:23:08,226 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:23:08,227 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:23:08,227 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:23:08,228 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:23:08,229 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:23:08" (1/1) ... [2022-11-21 16:23:08,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:23:08,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283e1b41-6dbb-4bf2-8d9f-3b8f6e73b924/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:23:08,268 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283e1b41-6dbb-4bf2-8d9f-3b8f6e73b924/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:23:08,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283e1b41-6dbb-4bf2-8d9f-3b8f6e73b924/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:23:08,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:23:08,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 16:23:08,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 16:23:08,328 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 16:23:08,328 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-21 16:23:08,330 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-21 16:23:08,330 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-21 16:23:08,331 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-21 16:23:08,331 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-21 16:23:08,331 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-21 16:23:08,331 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-21 16:23:08,331 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-21 16:23:08,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:23:08,331 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-21 16:23:08,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-21 16:23:08,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 16:23:08,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:23:08,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:23:08,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 16:23:08,334 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 16:23:08,572 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:23:08,574 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:23:09,270 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:23:09,895 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:23:09,895 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-21 16:23:09,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:23:09 BoogieIcfgContainer [2022-11-21 16:23:09,899 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:23:09,902 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:23:09,903 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:23:09,907 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:23:09,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:23:07" (1/3) ... [2022-11-21 16:23:09,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@152b74bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:23:09, skipping insertion in model container [2022-11-21 16:23:09,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:23:08" (2/3) ... [2022-11-21 16:23:09,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@152b74bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:23:09, skipping insertion in model container [2022-11-21 16:23:09,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:23:09" (3/3) ... [2022-11-21 16:23:09,916 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult2.wvr.c [2022-11-21 16:23:09,927 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 16:23:09,938 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:23:09,938 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2022-11-21 16:23:09,939 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 16:23:10,158 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-21 16:23:10,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 257 places, 262 transitions, 556 flow [2022-11-21 16:23:10,372 INFO L130 PetriNetUnfolder]: 18/258 cut-off events. [2022-11-21 16:23:10,373 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-21 16:23:10,407 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. [2022-11-21 16:23:10,407 INFO L82 GeneralOperation]: Start removeDead. Operand has 257 places, 262 transitions, 556 flow [2022-11-21 16:23:10,419 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 231 places, 235 transitions, 491 flow [2022-11-21 16:23:10,428 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:23:10,435 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;@1c3bcb9c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:23:10,435 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2022-11-21 16:23:10,451 INFO L130 PetriNetUnfolder]: 3/85 cut-off events. [2022-11-21 16:23:10,451 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 16:23:10,451 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:23:10,452 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] [2022-11-21 16:23:10,452 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-21 16:23:10,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:23:10,459 INFO L85 PathProgramCache]: Analyzing trace with hash 237765901, now seen corresponding path program 1 times [2022-11-21 16:23:10,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:23:10,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806675350] [2022-11-21 16:23:10,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:23:10,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:23:10,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:11,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:23:11,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:23:11,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806675350] [2022-11-21 16:23:11,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806675350] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:23:11,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:23:11,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:23:11,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349016879] [2022-11-21 16:23:11,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:23:11,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:23:11,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:23:11,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:23:11,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:23:11,062 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 262 [2022-11-21 16:23:11,067 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) [2022-11-21 16:23:11,067 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:23:11,067 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 262 [2022-11-21 16:23:11,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:23:22,215 INFO L130 PetriNetUnfolder]: 23681/32767 cut-off events. [2022-11-21 16:23:22,216 INFO L131 PetriNetUnfolder]: For 5360/5368 co-relation queries the response was YES. [2022-11-21 16:23:22,317 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. [2022-11-21 16:23:22,709 INFO L137 encePairwiseOnDemand]: 230/262 looper letters, 90 selfloop transitions, 9 changer transitions 5/262 dead transitions. [2022-11-21 16:23:22,710 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 262 transitions, 764 flow [2022-11-21 16:23:22,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:23:22,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:23:22,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1072 transitions. [2022-11-21 16:23:22,733 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8183206106870229 [2022-11-21 16:23:22,734 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1072 transitions. [2022-11-21 16:23:22,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1072 transitions. [2022-11-21 16:23:22,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:23:22,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1072 transitions. [2022-11-21 16:23:22,751 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) [2022-11-21 16:23:22,762 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) [2022-11-21 16:23:22,763 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) [2022-11-21 16:23:22,766 INFO L175 Difference]: Start difference. First operand has 231 places, 235 transitions, 491 flow. Second operand 5 states and 1072 transitions. [2022-11-21 16:23:22,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 262 transitions, 764 flow [2022-11-21 16:23:22,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 262 transitions, 738 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-21 16:23:22,801 INFO L231 Difference]: Finished difference. Result has 223 places, 218 transitions, 497 flow [2022-11-21 16:23:22,804 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} [2022-11-21 16:23:22,811 INFO L288 CegarLoopForPetriNet]: 231 programPoint places, -8 predicate places. [2022-11-21 16:23:22,811 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 218 transitions, 497 flow [2022-11-21 16:23:22,812 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) [2022-11-21 16:23:22,812 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:23:22,813 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] [2022-11-21 16:23:22,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 16:23:22,814 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-21 16:23:22,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:23:22,815 INFO L85 PathProgramCache]: Analyzing trace with hash -820488820, now seen corresponding path program 1 times [2022-11-21 16:23:22,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:23:22,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705654260] [2022-11-21 16:23:22,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:23:22,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:23:22,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:23,125 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:23:23,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:23:23,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705654260] [2022-11-21 16:23:23,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705654260] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:23:23,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130163898] [2022-11-21 16:23:23,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:23:23,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:23:23,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283e1b41-6dbb-4bf2-8d9f-3b8f6e73b924/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:23:23,133 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283e1b41-6dbb-4bf2-8d9f-3b8f6e73b924/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:23:23,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283e1b41-6dbb-4bf2-8d9f-3b8f6e73b924/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 16:23:23,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:23,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:23:23,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:23:23,427 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:23:23,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:23:23,497 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:23:23,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130163898] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:23:23,498 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:23:23,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-21 16:23:23,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124293314] [2022-11-21 16:23:23,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:23:23,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 16:23:23,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:23:23,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 16:23:23,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-21 16:23:23,505 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 262 [2022-11-21 16:23:23,509 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) [2022-11-21 16:23:23,510 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:23:23,510 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 262 [2022-11-21 16:23:23,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:23:44,914 INFO L130 PetriNetUnfolder]: 59201/81770 cut-off events. [2022-11-21 16:23:44,915 INFO L131 PetriNetUnfolder]: For 4017/4037 co-relation queries the response was YES. [2022-11-21 16:23:45,073 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. [2022-11-21 16:23:45,559 INFO L137 encePairwiseOnDemand]: 247/262 looper letters, 201 selfloop transitions, 40 changer transitions 0/399 dead transitions. [2022-11-21 16:23:45,559 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 399 transitions, 1423 flow [2022-11-21 16:23:45,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 16:23:45,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-21 16:23:45,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3613 transitions. [2022-11-21 16:23:45,568 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7661153519932146 [2022-11-21 16:23:45,568 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3613 transitions. [2022-11-21 16:23:45,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3613 transitions. [2022-11-21 16:23:45,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:23:45,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3613 transitions. [2022-11-21 16:23:45,579 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) [2022-11-21 16:23:45,589 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) [2022-11-21 16:23:45,592 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) [2022-11-21 16:23:45,593 INFO L175 Difference]: Start difference. First operand has 223 places, 218 transitions, 497 flow. Second operand 18 states and 3613 transitions. [2022-11-21 16:23:45,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 399 transitions, 1423 flow [2022-11-21 16:23:45,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 399 transitions, 1418 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 16:23:45,606 INFO L231 Difference]: Finished difference. Result has 238 places, 245 transitions, 730 flow [2022-11-21 16:23:45,607 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} [2022-11-21 16:23:45,608 INFO L288 CegarLoopForPetriNet]: 231 programPoint places, 7 predicate places. [2022-11-21 16:23:45,608 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 245 transitions, 730 flow [2022-11-21 16:23:45,611 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) [2022-11-21 16:23:45,611 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:23:45,612 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] [2022-11-21 16:23:45,622 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283e1b41-6dbb-4bf2-8d9f-3b8f6e73b924/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-21 16:23:45,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283e1b41-6dbb-4bf2-8d9f-3b8f6e73b924/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:23:45,818 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-21 16:23:45,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:23:45,819 INFO L85 PathProgramCache]: Analyzing trace with hash 334651233, now seen corresponding path program 1 times [2022-11-21 16:23:45,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:23:45,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016876168] [2022-11-21 16:23:45,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:23:45,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:23:45,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:45,957 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:23:45,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:23:45,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016876168] [2022-11-21 16:23:45,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016876168] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:23:45,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512738740] [2022-11-21 16:23:45,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:23:45,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:23:45,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283e1b41-6dbb-4bf2-8d9f-3b8f6e73b924/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:23:45,960 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283e1b41-6dbb-4bf2-8d9f-3b8f6e73b924/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:23:45,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283e1b41-6dbb-4bf2-8d9f-3b8f6e73b924/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 16:23:46,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:46,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:23:46,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:23:46,323 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:23:46,324 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:23:46,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512738740] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:23:46,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:23:46,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 16:23:46,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324278817] [2022-11-21 16:23:46,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:23:46,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:23:46,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:23:46,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:23:46,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:23:46,333 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 262 [2022-11-21 16:23:46,334 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) [2022-11-21 16:23:46,335 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:23:46,335 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 262 [2022-11-21 16:23:46,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand