./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b 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_85e97ab4-1880-4fcb-b05c-6ed0d0f06cf9/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e97ab4-1880-4fcb-b05c-6ed0d0f06cf9/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e97ab4-1880-4fcb-b05c-6ed0d0f06cf9/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e97ab4-1880-4fcb-b05c-6ed0d0f06cf9/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e97ab4-1880-4fcb-b05c-6ed0d0f06cf9/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e97ab4-1880-4fcb-b05c-6ed0d0f06cf9/bin/uautomizer-ug76WZFUDN --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 675e4a71573eb5ca191c78078c954ea41743d39a46f0fa586376ee48e7dc4190 --- 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-6b4ec56 [2022-11-20 12:09:30,954 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:09:30,957 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:09:30,983 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:09:30,984 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:09:30,985 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:09:30,990 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:09:30,993 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:09:30,999 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:09:31,003 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:09:31,004 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:09:31,006 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:09:31,008 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:09:31,011 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:09:31,013 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:09:31,017 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:09:31,019 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:09:31,023 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:09:31,025 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:09:31,029 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:09:31,035 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:09:31,037 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:09:31,043 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:09:31,044 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:09:31,048 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:09:31,055 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:09:31,055 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:09:31,056 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:09:31,057 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:09:31,058 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:09:31,059 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:09:31,060 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:09:31,063 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:09:31,064 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:09:31,067 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:09:31,068 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:09:31,068 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:09:31,069 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:09:31,069 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:09:31,071 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:09:31,074 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:09:31,075 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e97ab4-1880-4fcb-b05c-6ed0d0f06cf9/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 12:09:31,115 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:09:31,115 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:09:31,116 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:09:31,117 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:09:31,118 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:09:31,118 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:09:31,120 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:09:31,120 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:09:31,121 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:09:31,121 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:09:31,123 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:09:31,123 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:09:31,123 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:09:31,123 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:09:31,124 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:09:31,124 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:09:31,124 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:09:31,125 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:09:31,125 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 12:09:31,125 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:09:31,125 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:09:31,126 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:09:31,126 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:09:31,126 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:09:31,126 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:09:31,127 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:09:31,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:09:31,127 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:09:31,128 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:09:31,128 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:09:31,129 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:09:31,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:09:31,130 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:09:31,130 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:09:31,131 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:09:31,131 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_85e97ab4-1880-4fcb-b05c-6ed0d0f06cf9/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e97ab4-1880-4fcb-b05c-6ed0d0f06cf9/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 675e4a71573eb5ca191c78078c954ea41743d39a46f0fa586376ee48e7dc4190 [2022-11-20 12:09:31,510 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:09:31,554 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:09:31,557 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:09:31,559 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:09:31,560 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:09:31,561 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e97ab4-1880-4fcb-b05c-6ed0d0f06cf9/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c [2022-11-20 12:09:35,229 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:09:35,548 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:09:35,549 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e97ab4-1880-4fcb-b05c-6ed0d0f06cf9/sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c [2022-11-20 12:09:35,559 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e97ab4-1880-4fcb-b05c-6ed0d0f06cf9/bin/uautomizer-ug76WZFUDN/data/806fabdb3/41843c9ec75e4e22ab4a299d7e9350d7/FLAG79c4b092d [2022-11-20 12:09:35,585 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e97ab4-1880-4fcb-b05c-6ed0d0f06cf9/bin/uautomizer-ug76WZFUDN/data/806fabdb3/41843c9ec75e4e22ab4a299d7e9350d7 [2022-11-20 12:09:35,589 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:09:35,591 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:09:35,593 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:09:35,594 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:09:35,599 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:09:35,600 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:09:35" (1/1) ... [2022-11-20 12:09:35,602 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dfbe4eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:09:35, skipping insertion in model container [2022-11-20 12:09:35,602 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:09:35" (1/1) ... [2022-11-20 12:09:35,618 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:09:35,672 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:09:35,953 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_85e97ab4-1880-4fcb-b05c-6ed0d0f06cf9/sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c[4351,4364] [2022-11-20 12:09:35,967 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:09:35,981 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:09:36,024 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_85e97ab4-1880-4fcb-b05c-6ed0d0f06cf9/sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c[4351,4364] [2022-11-20 12:09:36,038 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:09:36,085 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:09:36,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:09:36 WrapperNode [2022-11-20 12:09:36,086 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:09:36,088 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:09:36,088 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:09:36,088 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:09:36,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:09:36" (1/1) ... [2022-11-20 12:09:36,122 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:09:36" (1/1) ... [2022-11-20 12:09:36,199 INFO L138 Inliner]: procedures = 27, calls = 87, calls flagged for inlining = 22, calls inlined = 28, statements flattened = 398 [2022-11-20 12:09:36,203 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:09:36,204 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:09:36,205 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:09:36,205 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:09:36,218 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:09:36" (1/1) ... [2022-11-20 12:09:36,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:09:36" (1/1) ... [2022-11-20 12:09:36,241 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:09:36" (1/1) ... [2022-11-20 12:09:36,247 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:09:36" (1/1) ... [2022-11-20 12:09:36,260 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:09:36" (1/1) ... [2022-11-20 12:09:36,281 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:09:36" (1/1) ... [2022-11-20 12:09:36,293 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:09:36" (1/1) ... [2022-11-20 12:09:36,296 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:09:36" (1/1) ... [2022-11-20 12:09:36,301 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:09:36,302 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:09:36,302 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:09:36,303 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:09:36,304 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:09:36" (1/1) ... [2022-11-20 12:09:36,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:09:36,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e97ab4-1880-4fcb-b05c-6ed0d0f06cf9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:09:36,346 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e97ab4-1880-4fcb-b05c-6ed0d0f06cf9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:09:36,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e97ab4-1880-4fcb-b05c-6ed0d0f06cf9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:09:36,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:09:36,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:09:36,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:09:36,412 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:09:36,412 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 12:09:36,414 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 12:09:36,415 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 12:09:36,415 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 12:09:36,416 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 12:09:36,416 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 12:09:36,416 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-20 12:09:36,416 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-20 12:09:36,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:09:36,417 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 12:09:36,417 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 12:09:36,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:09:36,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:09:36,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:09:36,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:09:36,421 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 12:09:36,688 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:09:36,691 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:09:37,623 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:09:38,346 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:09:38,346 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-11-20 12:09:38,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:09:38 BoogieIcfgContainer [2022-11-20 12:09:38,351 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:09:38,358 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:09:38,358 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:09:38,363 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:09:38,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:09:35" (1/3) ... [2022-11-20 12:09:38,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@225a36bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:09:38, skipping insertion in model container [2022-11-20 12:09:38,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:09:36" (2/3) ... [2022-11-20 12:09:38,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@225a36bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:09:38, skipping insertion in model container [2022-11-20 12:09:38,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:09:38" (3/3) ... [2022-11-20 12:09:38,374 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series.wvr.c [2022-11-20 12:09:38,387 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 12:09:38,400 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:09:38,401 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2022-11-20 12:09:38,401 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 12:09:38,690 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-20 12:09:38,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 295 places, 304 transitions, 640 flow [2022-11-20 12:09:38,998 INFO L130 PetriNetUnfolder]: 22/300 cut-off events. [2022-11-20 12:09:38,999 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-20 12:09:39,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317 conditions, 300 events. 22/300 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 303 event pairs, 0 based on Foata normal form. 0/246 useless extension candidates. Maximal degree in co-relation 254. Up to 2 conditions per place. [2022-11-20 12:09:39,011 INFO L82 GeneralOperation]: Start removeDead. Operand has 295 places, 304 transitions, 640 flow [2022-11-20 12:09:39,027 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 269 places, 277 transitions, 575 flow [2022-11-20 12:09:39,049 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:09:39,059 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;@92e2941, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:09:39,060 INFO L358 AbstractCegarLoop]: Starting to check reachability of 62 error locations. [2022-11-20 12:09:39,103 INFO L130 PetriNetUnfolder]: 3/83 cut-off events. [2022-11-20 12:09:39,103 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:09:39,104 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:09:39,105 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] [2022-11-20 12:09:39,106 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-11-20 12:09:39,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:09:39,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1762565349, now seen corresponding path program 1 times [2022-11-20 12:09:39,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:09:39,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228506004] [2022-11-20 12:09:39,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:09:39,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:09:39,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:39,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:09:39,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:09:39,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228506004] [2022-11-20 12:09:39,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228506004] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:09:39,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:09:39,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:09:39,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471063069] [2022-11-20 12:09:39,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:09:39,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:09:39,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:09:39,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:09:39,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:09:39,863 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 304 [2022-11-20 12:09:39,869 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 277 transitions, 575 flow. Second operand has 4 states, 4 states have (on average 213.5) internal successors, (854), 4 states have internal predecessors, (854), 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) [2022-11-20 12:09:39,870 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:09:39,870 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 304 [2022-11-20 12:09:39,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:09:51,237 INFO L130 PetriNetUnfolder]: 16171/24213 cut-off events. [2022-11-20 12:09:51,237 INFO L131 PetriNetUnfolder]: For 4692/4694 co-relation queries the response was YES. [2022-11-20 12:09:51,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46953 conditions, 24213 events. 16171/24213 cut-off events. For 4692/4694 co-relation queries the response was YES. Maximal size of possible extension queue 1419. Compared 166303 event pairs, 9734 based on Foata normal form. 4428/15035 useless extension candidates. Maximal degree in co-relation 22925. Up to 10183 conditions per place. [2022-11-20 12:09:51,561 INFO L137 encePairwiseOnDemand]: 259/304 looper letters, 104 selfloop transitions, 14 changer transitions 7/306 dead transitions. [2022-11-20 12:09:51,561 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 306 transitions, 890 flow [2022-11-20 12:09:51,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:09:51,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:09:51,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1228 transitions. [2022-11-20 12:09:51,591 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8078947368421052 [2022-11-20 12:09:51,592 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1228 transitions. [2022-11-20 12:09:51,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1228 transitions. [2022-11-20 12:09:51,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:09:51,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1228 transitions. [2022-11-20 12:09:51,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 245.6) internal successors, (1228), 5 states have internal predecessors, (1228), 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) [2022-11-20 12:09:51,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 304.0) internal successors, (1824), 6 states have internal predecessors, (1824), 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) [2022-11-20 12:09:51,626 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 304.0) internal successors, (1824), 6 states have internal predecessors, (1824), 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) [2022-11-20 12:09:51,628 INFO L175 Difference]: Start difference. First operand has 269 places, 277 transitions, 575 flow. Second operand 5 states and 1228 transitions. [2022-11-20 12:09:51,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 306 transitions, 890 flow [2022-11-20 12:09:51,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 306 transitions, 864 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-20 12:09:51,662 INFO L231 Difference]: Finished difference. Result has 258 places, 256 transitions, 602 flow [2022-11-20 12:09:51,665 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=602, PETRI_PLACES=258, PETRI_TRANSITIONS=256} [2022-11-20 12:09:51,673 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, -11 predicate places. [2022-11-20 12:09:51,673 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 256 transitions, 602 flow [2022-11-20 12:09:51,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 213.5) internal successors, (854), 4 states have internal predecessors, (854), 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) [2022-11-20 12:09:51,674 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:09:51,675 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] [2022-11-20 12:09:51,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:09:51,676 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-11-20 12:09:51,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:09:51,677 INFO L85 PathProgramCache]: Analyzing trace with hash -54071210, now seen corresponding path program 1 times [2022-11-20 12:09:51,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:09:51,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605311036] [2022-11-20 12:09:51,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:09:51,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:09:51,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:51,924 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:09:51,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:09:51,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605311036] [2022-11-20 12:09:51,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605311036] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:09:51,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977446934] [2022-11-20 12:09:51,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:09:51,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:09:51,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e97ab4-1880-4fcb-b05c-6ed0d0f06cf9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:09:51,931 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e97ab4-1880-4fcb-b05c-6ed0d0f06cf9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:09:51,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e97ab4-1880-4fcb-b05c-6ed0d0f06cf9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:09:52,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:52,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:09:52,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:09:52,333 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:09:52,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:09:52,415 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:09:52,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977446934] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:09:52,416 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:09:52,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-20 12:09:52,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514004782] [2022-11-20 12:09:52,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:09:52,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:09:52,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:09:52,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:09:52,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:09:52,424 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 304 [2022-11-20 12:09:52,428 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 256 transitions, 602 flow. Second operand has 12 states, 12 states have (on average 214.66666666666666) internal successors, (2576), 12 states have internal predecessors, (2576), 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) [2022-11-20 12:09:52,428 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:09:52,428 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 304 [2022-11-20 12:09:52,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:10:13,305 INFO L130 PetriNetUnfolder]: 40426/60358 cut-off events. [2022-11-20 12:10:13,306 INFO L131 PetriNetUnfolder]: For 3543/3548 co-relation queries the response was YES. [2022-11-20 12:10:13,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113591 conditions, 60358 events. 40426/60358 cut-off events. For 3543/3548 co-relation queries the response was YES. Maximal size of possible extension queue 1563. Compared 435503 event pairs, 24335 based on Foata normal form. 9/26387 useless extension candidates. Maximal degree in co-relation 90500. Up to 10174 conditions per place. [2022-11-20 12:10:13,943 INFO L137 encePairwiseOnDemand]: 281/304 looper letters, 224 selfloop transitions, 62 changer transitions 0/467 dead transitions. [2022-11-20 12:10:13,943 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 467 transitions, 1706 flow [2022-11-20 12:10:13,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 12:10:13,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 12:10:13,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4111 transitions. [2022-11-20 12:10:13,955 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7512792397660819 [2022-11-20 12:10:13,956 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4111 transitions. [2022-11-20 12:10:13,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4111 transitions. [2022-11-20 12:10:13,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:10:13,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4111 transitions. [2022-11-20 12:10:13,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 228.38888888888889) internal successors, (4111), 18 states have internal predecessors, (4111), 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) [2022-11-20 12:10:13,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 304.0) internal successors, (5776), 19 states have internal predecessors, (5776), 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) [2022-11-20 12:10:13,986 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 304.0) internal successors, (5776), 19 states have internal predecessors, (5776), 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) [2022-11-20 12:10:13,986 INFO L175 Difference]: Start difference. First operand has 258 places, 256 transitions, 602 flow. Second operand 18 states and 4111 transitions. [2022-11-20 12:10:13,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 467 transitions, 1706 flow [2022-11-20 12:10:13,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 467 transitions, 1698 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:10:14,003 INFO L231 Difference]: Finished difference. Result has 271 places, 298 transitions, 964 flow [2022-11-20 12:10:14,004 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=594, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=964, PETRI_PLACES=271, PETRI_TRANSITIONS=298} [2022-11-20 12:10:14,005 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 2 predicate places. [2022-11-20 12:10:14,005 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 298 transitions, 964 flow [2022-11-20 12:10:14,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 214.66666666666666) internal successors, (2576), 12 states have internal predecessors, (2576), 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) [2022-11-20 12:10:14,008 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:10:14,008 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] [2022-11-20 12:10:14,014 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e97ab4-1880-4fcb-b05c-6ed0d0f06cf9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 12:10:14,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e97ab4-1880-4fcb-b05c-6ed0d0f06cf9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:10:14,210 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-11-20 12:10:14,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:14,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1676206516, now seen corresponding path program 1 times [2022-11-20 12:10:14,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:10:14,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879002524] [2022-11-20 12:10:14,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:14,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:10:14,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:14,506 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:10:14,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:10:14,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879002524] [2022-11-20 12:10:14,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879002524] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:10:14,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437850490] [2022-11-20 12:10:14,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:14,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:10:14,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e97ab4-1880-4fcb-b05c-6ed0d0f06cf9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:10:14,510 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e97ab4-1880-4fcb-b05c-6ed0d0f06cf9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:10:14,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e97ab4-1880-4fcb-b05c-6ed0d0f06cf9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:10:14,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:14,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:10:14,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:10:14,798 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:10:14,799 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:10:14,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437850490] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:10:14,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:10:14,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 12:10:14,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913640764] [2022-11-20 12:10:14,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:10:14,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:10:14,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:10:14,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:10:14,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:10:14,804 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 304 [2022-11-20 12:10:14,807 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 298 transitions, 964 flow. Second operand has 6 states, 6 states have (on average 214.33333333333334) internal successors, (1286), 6 states have internal predecessors, (1286), 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) [2022-11-20 12:10:14,807 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:10:14,807 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 304 [2022-11-20 12:10:14,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand