./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f 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_06c883f4-09ba-4b0c-9b84-372e35282cc1/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06c883f4-09ba-4b0c-9b84-372e35282cc1/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06c883f4-09ba-4b0c-9b84-372e35282cc1/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06c883f4-09ba-4b0c-9b84-372e35282cc1/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06c883f4-09ba-4b0c-9b84-372e35282cc1/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06c883f4-09ba-4b0c-9b84-372e35282cc1/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 610058eb9ed98833ba9b7a0798b4759bf36fe1b982d69af76f73ab299f075720 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:39:53,104 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:39:53,109 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:39:53,138 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:39:53,140 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:39:53,141 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:39:53,143 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:39:53,148 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:39:53,152 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:39:53,154 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:39:53,155 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:39:53,157 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:39:53,158 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:39:53,161 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:39:53,163 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:39:53,164 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:39:53,165 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:39:53,170 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:39:53,172 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:39:53,174 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:39:53,177 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:39:53,179 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:39:53,181 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:39:53,183 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:39:53,188 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:39:53,193 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:39:53,193 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:39:53,194 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:39:53,195 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:39:53,196 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:39:53,197 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:39:53,198 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:39:53,199 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:39:53,201 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:39:53,203 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:39:53,203 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:39:53,204 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:39:53,204 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:39:53,204 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:39:53,205 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:39:53,206 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:39:53,206 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06c883f4-09ba-4b0c-9b84-372e35282cc1/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 12:39:53,248 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:39:53,248 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:39:53,249 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:39:53,249 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:39:53,250 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:39:53,250 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:39:53,251 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:39:53,251 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:39:53,251 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:39:53,252 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:39:53,253 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:39:53,253 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:39:53,253 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:39:53,253 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:39:53,253 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:39:53,254 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:39:53,254 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:39:53,254 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:39:53,254 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 12:39:53,254 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:39:53,255 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:39:53,255 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:39:53,255 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:39:53,255 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:39:53,257 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:39:53,257 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:39:53,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:39:53,257 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:39:53,258 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:39:53,258 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:39:53,258 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:39:53,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:39:53,259 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:39:53,259 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:39:53,259 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:39:53,259 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_06c883f4-09ba-4b0c-9b84-372e35282cc1/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06c883f4-09ba-4b0c-9b84-372e35282cc1/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 610058eb9ed98833ba9b7a0798b4759bf36fe1b982d69af76f73ab299f075720 [2022-11-16 12:39:53,526 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:39:53,554 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:39:53,556 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:39:53,558 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:39:53,558 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:39:53,559 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06c883f4-09ba-4b0c-9b84-372e35282cc1/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c [2022-11-16 12:39:53,645 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06c883f4-09ba-4b0c-9b84-372e35282cc1/bin/uautomizer-tPACEb0tL8/data/42f06a715/5e7c37d4e432492db1ab4e389d8a91d2/FLAG54212e22c [2022-11-16 12:39:54,141 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:39:54,143 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06c883f4-09ba-4b0c-9b84-372e35282cc1/sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c [2022-11-16 12:39:54,153 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06c883f4-09ba-4b0c-9b84-372e35282cc1/bin/uautomizer-tPACEb0tL8/data/42f06a715/5e7c37d4e432492db1ab4e389d8a91d2/FLAG54212e22c [2022-11-16 12:39:54,502 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06c883f4-09ba-4b0c-9b84-372e35282cc1/bin/uautomizer-tPACEb0tL8/data/42f06a715/5e7c37d4e432492db1ab4e389d8a91d2 [2022-11-16 12:39:54,506 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:39:54,509 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:39:54,512 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:39:54,513 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:39:54,516 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:39:54,517 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:39:54" (1/1) ... [2022-11-16 12:39:54,519 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d0156f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:54, skipping insertion in model container [2022-11-16 12:39:54,520 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:39:54" (1/1) ... [2022-11-16 12:39:54,529 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:39:54,555 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:39:54,789 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06c883f4-09ba-4b0c-9b84-372e35282cc1/sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c[2438,2451] [2022-11-16 12:39:54,795 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:39:54,803 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:39:54,824 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06c883f4-09ba-4b0c-9b84-372e35282cc1/sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c[2438,2451] [2022-11-16 12:39:54,827 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:39:54,841 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:39:54,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:54 WrapperNode [2022-11-16 12:39:54,842 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:39:54,843 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:39:54,843 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:39:54,843 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:39:54,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:54" (1/1) ... [2022-11-16 12:39:54,873 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:54" (1/1) ... [2022-11-16 12:39:54,909 INFO L138 Inliner]: procedures = 24, calls = 33, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 134 [2022-11-16 12:39:54,911 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:39:54,912 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:39:54,912 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:39:54,912 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:39:54,922 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:54" (1/1) ... [2022-11-16 12:39:54,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:54" (1/1) ... [2022-11-16 12:39:54,940 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:54" (1/1) ... [2022-11-16 12:39:54,941 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:54" (1/1) ... [2022-11-16 12:39:54,947 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:54" (1/1) ... [2022-11-16 12:39:54,962 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:54" (1/1) ... [2022-11-16 12:39:54,964 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:54" (1/1) ... [2022-11-16 12:39:54,972 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:54" (1/1) ... [2022-11-16 12:39:54,975 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:39:54,976 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:39:54,976 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:39:54,976 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:39:54,977 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:54" (1/1) ... [2022-11-16 12:39:54,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:39:55,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06c883f4-09ba-4b0c-9b84-372e35282cc1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:39:55,021 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06c883f4-09ba-4b0c-9b84-372e35282cc1/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:39:55,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06c883f4-09ba-4b0c-9b84-372e35282cc1/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:39:55,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:39:55,079 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 12:39:55,079 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 12:39:55,079 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 12:39:55,080 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 12:39:55,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:39:55,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:39:55,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:39:55,082 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 12:39:55,083 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 12:39:55,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:39:55,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:39:55,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:39:55,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:39:55,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:39:55,085 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:39:55,205 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:39:55,206 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:39:55,457 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:39:55,659 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:39:55,661 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-16 12:39:55,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:39:55 BoogieIcfgContainer [2022-11-16 12:39:55,664 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:39:55,666 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:39:55,667 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:39:55,670 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:39:55,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:39:54" (1/3) ... [2022-11-16 12:39:55,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cbdf20c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:39:55, skipping insertion in model container [2022-11-16 12:39:55,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:54" (2/3) ... [2022-11-16 12:39:55,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cbdf20c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:39:55, skipping insertion in model container [2022-11-16 12:39:55,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:39:55" (3/3) ... [2022-11-16 12:39:55,674 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-simple-queue.wvr.c [2022-11-16 12:39:55,683 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:39:55,694 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:39:55,694 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-16 12:39:55,695 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:39:55,767 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 12:39:55,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 125 places, 127 transitions, 270 flow [2022-11-16 12:39:55,899 INFO L130 PetriNetUnfolder]: 9/125 cut-off events. [2022-11-16 12:39:55,899 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 12:39:55,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 125 events. 9/125 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 85 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2022-11-16 12:39:55,905 INFO L82 GeneralOperation]: Start removeDead. Operand has 125 places, 127 transitions, 270 flow [2022-11-16 12:39:55,914 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 106 transitions, 221 flow [2022-11-16 12:39:55,940 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:39:55,954 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;@4e276be0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:39:55,954 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-11-16 12:39:55,984 INFO L130 PetriNetUnfolder]: 3/64 cut-off events. [2022-11-16 12:39:55,985 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:39:55,985 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:39:55,986 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] [2022-11-16 12:39:55,987 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-16 12:39:55,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:55,992 INFO L85 PathProgramCache]: Analyzing trace with hash 230370282, now seen corresponding path program 1 times [2022-11-16 12:39:56,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:39:56,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813030954] [2022-11-16 12:39:56,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:56,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:39:56,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:56,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:39:56,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:39:56,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813030954] [2022-11-16 12:39:56,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813030954] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:39:56,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:39:56,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:39:56,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421023497] [2022-11-16 12:39:56,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:39:56,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:39:56,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:39:56,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:39:56,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:39:56,582 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 127 [2022-11-16 12:39:56,586 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 106 transitions, 221 flow. Second operand has 4 states, 4 states have (on average 99.5) internal successors, (398), 4 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:56,586 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:39:56,587 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 127 [2022-11-16 12:39:56,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:39:56,732 INFO L130 PetriNetUnfolder]: 19/166 cut-off events. [2022-11-16 12:39:56,732 INFO L131 PetriNetUnfolder]: For 20/22 co-relation queries the response was YES. [2022-11-16 12:39:56,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240 conditions, 166 events. 19/166 cut-off events. For 20/22 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 319 event pairs, 6 based on Foata normal form. 14/154 useless extension candidates. Maximal degree in co-relation 146. Up to 30 conditions per place. [2022-11-16 12:39:56,735 INFO L137 encePairwiseOnDemand]: 114/127 looper letters, 30 selfloop transitions, 4 changer transitions 2/114 dead transitions. [2022-11-16 12:39:56,735 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 114 transitions, 314 flow [2022-11-16 12:39:56,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:39:56,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:39:56,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 538 transitions. [2022-11-16 12:39:56,757 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8472440944881889 [2022-11-16 12:39:56,758 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 538 transitions. [2022-11-16 12:39:56,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 538 transitions. [2022-11-16 12:39:56,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:39:56,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 538 transitions. [2022-11-16 12:39:56,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 107.6) internal successors, (538), 5 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:56,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:56,781 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:56,783 INFO L175 Difference]: Start difference. First operand has 105 places, 106 transitions, 221 flow. Second operand 5 states and 538 transitions. [2022-11-16 12:39:56,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 114 transitions, 314 flow [2022-11-16 12:39:56,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 114 transitions, 304 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:39:56,797 INFO L231 Difference]: Finished difference. Result has 107 places, 100 transitions, 228 flow [2022-11-16 12:39:56,798 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=228, PETRI_PLACES=107, PETRI_TRANSITIONS=100} [2022-11-16 12:39:56,802 INFO L288 CegarLoopForPetriNet]: 105 programPoint places, 2 predicate places. [2022-11-16 12:39:56,802 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 100 transitions, 228 flow [2022-11-16 12:39:56,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.5) internal successors, (398), 4 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:56,803 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:39:56,803 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] [2022-11-16 12:39:56,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:39:56,804 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-16 12:39:56,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:56,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1106383987, now seen corresponding path program 1 times [2022-11-16 12:39:56,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:39:56,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893273060] [2022-11-16 12:39:56,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:56,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:39:56,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:57,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:39:57,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:39:57,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893273060] [2022-11-16 12:39:57,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893273060] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:39:57,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:39:57,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:39:57,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927358878] [2022-11-16 12:39:57,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:39:57,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:39:57,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:39:57,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:39:57,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:39:57,064 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 127 [2022-11-16 12:39:57,068 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 100 transitions, 228 flow. Second operand has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:57,069 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:39:57,069 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 127 [2022-11-16 12:39:57,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:39:57,237 INFO L130 PetriNetUnfolder]: 10/150 cut-off events. [2022-11-16 12:39:57,241 INFO L131 PetriNetUnfolder]: For 14/15 co-relation queries the response was YES. [2022-11-16 12:39:57,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 150 events. 10/150 cut-off events. For 14/15 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 243 event pairs, 3 based on Foata normal form. 4/140 useless extension candidates. Maximal degree in co-relation 91. Up to 27 conditions per place. [2022-11-16 12:39:57,243 INFO L137 encePairwiseOnDemand]: 116/127 looper letters, 19 selfloop transitions, 6 changer transitions 4/106 dead transitions. [2022-11-16 12:39:57,243 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 106 transitions, 302 flow [2022-11-16 12:39:57,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:39:57,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:39:57,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 705 transitions. [2022-11-16 12:39:57,252 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7930258717660292 [2022-11-16 12:39:57,253 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 705 transitions. [2022-11-16 12:39:57,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 705 transitions. [2022-11-16 12:39:57,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:39:57,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 705 transitions. [2022-11-16 12:39:57,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 100.71428571428571) internal successors, (705), 7 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:57,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 127.0) internal successors, (1016), 8 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:57,262 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 127.0) internal successors, (1016), 8 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:57,262 INFO L175 Difference]: Start difference. First operand has 107 places, 100 transitions, 228 flow. Second operand 7 states and 705 transitions. [2022-11-16 12:39:57,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 106 transitions, 302 flow [2022-11-16 12:39:57,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 106 transitions, 300 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:39:57,268 INFO L231 Difference]: Finished difference. Result has 112 places, 100 transitions, 250 flow [2022-11-16 12:39:57,268 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=250, PETRI_PLACES=112, PETRI_TRANSITIONS=100} [2022-11-16 12:39:57,269 INFO L288 CegarLoopForPetriNet]: 105 programPoint places, 7 predicate places. [2022-11-16 12:39:57,269 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 100 transitions, 250 flow [2022-11-16 12:39:57,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:57,270 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:39:57,271 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] [2022-11-16 12:39:57,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:39:57,271 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-16 12:39:57,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:57,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1743070262, now seen corresponding path program 1 times [2022-11-16 12:39:57,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:39:57,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400335142] [2022-11-16 12:39:57,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:57,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:39:57,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:57,484 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:39:57,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:39:57,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400335142] [2022-11-16 12:39:57,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400335142] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:39:57,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126397987] [2022-11-16 12:39:57,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:57,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:39:57,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06c883f4-09ba-4b0c-9b84-372e35282cc1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:39:57,490 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06c883f4-09ba-4b0c-9b84-372e35282cc1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:39:57,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06c883f4-09ba-4b0c-9b84-372e35282cc1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:39:57,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:57,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:39:57,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:39:57,730 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:39:57,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:39:57,794 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:39:57,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126397987] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:39:57,795 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:39:57,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-16 12:39:57,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329382726] [2022-11-16 12:39:57,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:39:57,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:39:57,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:39:57,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:39:57,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:39:57,799 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 127 [2022-11-16 12:39:57,801 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 100 transitions, 250 flow. Second operand has 12 states, 12 states have (on average 100.66666666666667) internal successors, (1208), 12 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:57,801 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:39:57,801 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 127 [2022-11-16 12:39:57,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:39:58,162 INFO L130 PetriNetUnfolder]: 37/289 cut-off events. [2022-11-16 12:39:58,162 INFO L131 PetriNetUnfolder]: For 40/44 co-relation queries the response was YES. [2022-11-16 12:39:58,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 511 conditions, 289 events. 37/289 cut-off events. For 40/44 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 829 event pairs, 12 based on Foata normal form. 3/252 useless extension candidates. Maximal degree in co-relation 427. Up to 49 conditions per place. [2022-11-16 12:39:58,171 INFO L137 encePairwiseOnDemand]: 120/127 looper letters, 55 selfloop transitions, 18 changer transitions 0/151 dead transitions. [2022-11-16 12:39:58,172 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 151 transitions, 562 flow [2022-11-16 12:39:58,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:39:58,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 12:39:58,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1840 transitions. [2022-11-16 12:39:58,177 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8048993875765529 [2022-11-16 12:39:58,178 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1840 transitions. [2022-11-16 12:39:58,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1840 transitions. [2022-11-16 12:39:58,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:39:58,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1840 transitions. [2022-11-16 12:39:58,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 102.22222222222223) internal successors, (1840), 18 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:58,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 127.0) internal successors, (2413), 19 states have internal predecessors, (2413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:58,191 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 127.0) internal successors, (2413), 19 states have internal predecessors, (2413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:58,191 INFO L175 Difference]: Start difference. First operand has 112 places, 100 transitions, 250 flow. Second operand 18 states and 1840 transitions. [2022-11-16 12:39:58,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 151 transitions, 562 flow [2022-11-16 12:39:58,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 151 transitions, 550 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:39:58,200 INFO L231 Difference]: Finished difference. Result has 127 places, 112 transitions, 344 flow [2022-11-16 12:39:58,200 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=344, PETRI_PLACES=127, PETRI_TRANSITIONS=112} [2022-11-16 12:39:58,203 INFO L288 CegarLoopForPetriNet]: 105 programPoint places, 22 predicate places. [2022-11-16 12:39:58,203 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 112 transitions, 344 flow [2022-11-16 12:39:58,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 100.66666666666667) internal successors, (1208), 12 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:58,204 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:39:58,205 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] [2022-11-16 12:39:58,216 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06c883f4-09ba-4b0c-9b84-372e35282cc1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-16 12:39:58,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06c883f4-09ba-4b0c-9b84-372e35282cc1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:39:58,412 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-16 12:39:58,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:58,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1799397105, now seen corresponding path program 1 times [2022-11-16 12:39:58,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:39:58,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213781434] [2022-11-16 12:39:58,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:58,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:39:58,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:58,531 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:39:58,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:39:58,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213781434] [2022-11-16 12:39:58,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213781434] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:39:58,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073308586] [2022-11-16 12:39:58,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:58,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:39:58,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06c883f4-09ba-4b0c-9b84-372e35282cc1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:39:58,540 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06c883f4-09ba-4b0c-9b84-372e35282cc1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:39:58,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06c883f4-09ba-4b0c-9b84-372e35282cc1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:39:58,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:58,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:39:58,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:39:58,685 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:39:58,685 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:39:58,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073308586] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:39:58,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:39:58,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 12:39:58,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265806448] [2022-11-16 12:39:58,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:39:58,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:39:58,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:39:58,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:39:58,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:39:58,693 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 127 [2022-11-16 12:39:58,693 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 112 transitions, 344 flow. Second operand has 6 states, 6 states have (on average 100.33333333333333) internal successors, (602), 6 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:58,694 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:39:58,694 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 127 [2022-11-16 12:39:58,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:39:58,833 INFO L130 PetriNetUnfolder]: 37/285 cut-off events. [2022-11-16 12:39:58,833 INFO L131 PetriNetUnfolder]: For 74/78 co-relation queries the response was YES. [2022-11-16 12:39:58,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 524 conditions, 285 events. 37/285 cut-off events. For 74/78 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 806 event pairs, 12 based on Foata normal form. 4/249 useless extension candidates. Maximal degree in co-relation 385. Up to 84 conditions per place. [2022-11-16 12:39:58,835 INFO L137 encePairwiseOnDemand]: 122/127 looper letters, 23 selfloop transitions, 11 changer transitions 0/112 dead transitions. [2022-11-16 12:39:58,835 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 112 transitions, 395 flow [2022-11-16 12:39:58,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:39:58,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:39:58,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 712 transitions. [2022-11-16 12:39:58,838 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8008998875140607 [2022-11-16 12:39:58,838 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 712 transitions. [2022-11-16 12:39:58,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 712 transitions. [2022-11-16 12:39:58,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:39:58,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 712 transitions. [2022-11-16 12:39:58,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 101.71428571428571) internal successors, (712), 7 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:58,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 127.0) internal successors, (1016), 8 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:58,843 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 127.0) internal successors, (1016), 8 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:58,844 INFO L175 Difference]: Start difference. First operand has 127 places, 112 transitions, 344 flow. Second operand 7 states and 712 transitions. [2022-11-16 12:39:58,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 112 transitions, 395 flow [2022-11-16 12:39:58,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 112 transitions, 363 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-16 12:39:58,848 INFO L231 Difference]: Finished difference. Result has 123 places, 108 transitions, 307 flow [2022-11-16 12:39:58,849 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=307, PETRI_PLACES=123, PETRI_TRANSITIONS=108} [2022-11-16 12:39:58,850 INFO L288 CegarLoopForPetriNet]: 105 programPoint places, 18 predicate places. [2022-11-16 12:39:58,850 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 108 transitions, 307 flow [2022-11-16 12:39:58,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 100.33333333333333) internal successors, (602), 6 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:58,850 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:39:58,851 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] [2022-11-16 12:39:58,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06c883f4-09ba-4b0c-9b84-372e35282cc1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:39:59,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06c883f4-09ba-4b0c-9b84-372e35282cc1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-16 12:39:59,057 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-16 12:39:59,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:59,057 INFO L85 PathProgramCache]: Analyzing trace with hash -244922221, now seen corresponding path program 1 times [2022-11-16 12:39:59,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:39:59,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139529829] [2022-11-16 12:39:59,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:59,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:39:59,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:59,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:39:59,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:39:59,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139529829] [2022-11-16 12:39:59,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139529829] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:39:59,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270362990] [2022-11-16 12:39:59,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:59,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:39:59,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06c883f4-09ba-4b0c-9b84-372e35282cc1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:39:59,319 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06c883f4-09ba-4b0c-9b84-372e35282cc1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:39:59,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06c883f4-09ba-4b0c-9b84-372e35282cc1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:39:59,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:59,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:39:59,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:39:59,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:39:59,519 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:39:59,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270362990] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:39:59,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:39:59,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-16 12:39:59,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297878874] [2022-11-16 12:39:59,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:39:59,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:39:59,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:39:59,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:39:59,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:39:59,523 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 127 [2022-11-16 12:39:59,523 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 108 transitions, 307 flow. Second operand has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:59,524 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:39:59,524 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 127 [2022-11-16 12:39:59,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:39:59,590 INFO L130 PetriNetUnfolder]: 17/245 cut-off events. [2022-11-16 12:39:59,591 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2022-11-16 12:39:59,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 363 conditions, 245 events. 17/245 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 553 event pairs, 0 based on Foata normal form. 0/237 useless extension candidates. Maximal degree in co-relation 305. Up to 32 conditions per place. [2022-11-16 12:39:59,592 INFO L137 encePairwiseOnDemand]: 122/127 looper letters, 3 selfloop transitions, 3 changer transitions 36/106 dead transitions. [2022-11-16 12:39:59,592 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 106 transitions, 321 flow [2022-11-16 12:39:59,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:39:59,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:39:59,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 429 transitions. [2022-11-16 12:39:59,594 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.844488188976378 [2022-11-16 12:39:59,595 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 429 transitions. [2022-11-16 12:39:59,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 429 transitions. [2022-11-16 12:39:59,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:39:59,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 429 transitions. [2022-11-16 12:39:59,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 107.25) internal successors, (429), 4 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:59,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:59,598 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:59,598 INFO L175 Difference]: Start difference. First operand has 123 places, 108 transitions, 307 flow. Second operand 4 states and 429 transitions. [2022-11-16 12:39:59,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 106 transitions, 321 flow [2022-11-16 12:39:59,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 106 transitions, 307 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:39:59,602 INFO L231 Difference]: Finished difference. Result has 119 places, 70 transitions, 209 flow [2022-11-16 12:39:59,602 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=209, PETRI_PLACES=119, PETRI_TRANSITIONS=70} [2022-11-16 12:39:59,603 INFO L288 CegarLoopForPetriNet]: 105 programPoint places, 14 predicate places. [2022-11-16 12:39:59,603 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 70 transitions, 209 flow [2022-11-16 12:39:59,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:59,603 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:39:59,604 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:39:59,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06c883f4-09ba-4b0c-9b84-372e35282cc1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:39:59,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06c883f4-09ba-4b0c-9b84-372e35282cc1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:39:59,810 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-16 12:39:59,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:59,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1997806614, now seen corresponding path program 2 times [2022-11-16 12:39:59,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:39:59,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188315944] [2022-11-16 12:39:59,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:59,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:39:59,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:00,087 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:40:00,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:40:00,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188315944] [2022-11-16 12:40:00,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188315944] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:40:00,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414248023] [2022-11-16 12:40:00,088 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:40:00,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:40:00,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06c883f4-09ba-4b0c-9b84-372e35282cc1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:40:00,090 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06c883f4-09ba-4b0c-9b84-372e35282cc1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:40:00,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06c883f4-09ba-4b0c-9b84-372e35282cc1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:40:00,194 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:40:00,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:40:00,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:40:00,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:40:00,410 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 12:40:00,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:40:00,555 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 12:40:00,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414248023] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:40:00,556 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:40:00,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-16 12:40:00,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631494309] [2022-11-16 12:40:00,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:40:00,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:40:00,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:40:00,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:40:00,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:40:00,561 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 127 [2022-11-16 12:40:00,563 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 70 transitions, 209 flow. Second operand has 18 states, 18 states have (on average 91.61111111111111) internal successors, (1649), 18 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:00,563 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:40:00,563 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 127 [2022-11-16 12:40:00,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:40:01,026 INFO L130 PetriNetUnfolder]: 1/103 cut-off events. [2022-11-16 12:40:01,026 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2022-11-16 12:40:01,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 103 events. 1/103 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 2/105 useless extension candidates. Maximal degree in co-relation 200. Up to 7 conditions per place. [2022-11-16 12:40:01,027 INFO L137 encePairwiseOnDemand]: 116/127 looper letters, 0 selfloop transitions, 0 changer transitions 93/93 dead transitions. [2022-11-16 12:40:01,027 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 93 transitions, 379 flow [2022-11-16 12:40:01,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 12:40:01,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-16 12:40:01,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2169 transitions. [2022-11-16 12:40:01,032 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7116141732283464 [2022-11-16 12:40:01,032 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2169 transitions. [2022-11-16 12:40:01,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2169 transitions. [2022-11-16 12:40:01,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:40:01,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2169 transitions. [2022-11-16 12:40:01,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 90.375) internal successors, (2169), 24 states have internal predecessors, (2169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:01,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 127.0) internal successors, (3175), 25 states have internal predecessors, (3175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:01,047 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 127.0) internal successors, (3175), 25 states have internal predecessors, (3175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:01,048 INFO L175 Difference]: Start difference. First operand has 119 places, 70 transitions, 209 flow. Second operand 24 states and 2169 transitions. [2022-11-16 12:40:01,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 93 transitions, 379 flow [2022-11-16 12:40:01,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 93 transitions, 363 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-16 12:40:01,051 INFO L231 Difference]: Finished difference. Result has 96 places, 0 transitions, 0 flow [2022-11-16 12:40:01,051 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=0, PETRI_PLACES=96, PETRI_TRANSITIONS=0} [2022-11-16 12:40:01,053 INFO L288 CegarLoopForPetriNet]: 105 programPoint places, -9 predicate places. [2022-11-16 12:40:01,054 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 0 transitions, 0 flow [2022-11-16 12:40:01,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 91.61111111111111) internal successors, (1649), 18 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:01,059 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 12 remaining) [2022-11-16 12:40:01,059 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining) [2022-11-16 12:40:01,060 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining) [2022-11-16 12:40:01,060 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining) [2022-11-16 12:40:01,060 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 12 remaining) [2022-11-16 12:40:01,060 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 12 remaining) [2022-11-16 12:40:01,061 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 12 remaining) [2022-11-16 12:40:01,061 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 12 remaining) [2022-11-16 12:40:01,061 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining) [2022-11-16 12:40:01,061 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining) [2022-11-16 12:40:01,062 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining) [2022-11-16 12:40:01,062 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining) [2022-11-16 12:40:01,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06c883f4-09ba-4b0c-9b84-372e35282cc1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:40:01,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06c883f4-09ba-4b0c-9b84-372e35282cc1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:40:01,267 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2022-11-16 12:40:01,271 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-16 12:40:01,272 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 12:40:01,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:40:01 BasicIcfg [2022-11-16 12:40:01,277 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 12:40:01,277 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 12:40:01,277 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 12:40:01,277 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 12:40:01,278 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:39:55" (3/4) ... [2022-11-16 12:40:01,280 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 12:40:01,284 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-16 12:40:01,284 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-16 12:40:01,288 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-11-16 12:40:01,288 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-16 12:40:01,288 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-16 12:40:01,288 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 12:40:01,331 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06c883f4-09ba-4b0c-9b84-372e35282cc1/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 12:40:01,336 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 12:40:01,337 INFO L158 Benchmark]: Toolchain (without parser) took 6828.07ms. Allocated memory was 125.8MB in the beginning and 195.0MB in the end (delta: 69.2MB). Free memory was 91.0MB in the beginning and 80.7MB in the end (delta: 10.3MB). Peak memory consumption was 78.6MB. Max. memory is 16.1GB. [2022-11-16 12:40:01,338 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 83.9MB. Free memory was 39.4MB in the beginning and 39.3MB in the end (delta: 78.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:40:01,338 INFO L158 Benchmark]: CACSL2BoogieTranslator took 329.96ms. Allocated memory is still 125.8MB. Free memory was 90.8MB in the beginning and 98.4MB in the end (delta: -7.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 12:40:01,338 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.99ms. Allocated memory is still 125.8MB. Free memory was 98.4MB in the beginning and 96.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:40:01,339 INFO L158 Benchmark]: Boogie Preprocessor took 62.90ms. Allocated memory is still 125.8MB. Free memory was 96.3MB in the beginning and 95.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:40:01,339 INFO L158 Benchmark]: RCFGBuilder took 688.48ms. Allocated memory is still 125.8MB. Free memory was 95.1MB in the beginning and 72.1MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-16 12:40:01,340 INFO L158 Benchmark]: TraceAbstraction took 5610.23ms. Allocated memory was 125.8MB in the beginning and 195.0MB in the end (delta: 69.2MB). Free memory was 71.2MB in the beginning and 83.7MB in the end (delta: -12.5MB). Peak memory consumption was 58.5MB. Max. memory is 16.1GB. [2022-11-16 12:40:01,340 INFO L158 Benchmark]: Witness Printer took 59.39ms. Allocated memory is still 195.0MB. Free memory was 83.7MB in the beginning and 80.7MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:40:01,342 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 83.9MB. Free memory was 39.4MB in the beginning and 39.3MB in the end (delta: 78.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 329.96ms. Allocated memory is still 125.8MB. Free memory was 90.8MB in the beginning and 98.4MB in the end (delta: -7.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.99ms. Allocated memory is still 125.8MB. Free memory was 98.4MB in the beginning and 96.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 62.90ms. Allocated memory is still 125.8MB. Free memory was 96.3MB in the beginning and 95.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 688.48ms. Allocated memory is still 125.8MB. Free memory was 95.1MB in the beginning and 72.1MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 5610.23ms. Allocated memory was 125.8MB in the beginning and 195.0MB in the end (delta: 69.2MB). Free memory was 71.2MB in the beginning and 83.7MB in the end (delta: -12.5MB). Peak memory consumption was 58.5MB. Max. memory is 16.1GB. * Witness Printer took 59.39ms. Allocated memory is still 195.0MB. Free memory was 83.7MB in the beginning and 80.7MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 51]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 51]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 63]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 63]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 139 locations, 12 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.5s, OverallIterations: 6, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 374 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 374 mSDsluCounter, 78 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 48 mSDsCounter, 30 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 377 IncrementalHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 30 mSolverCounterUnsat, 30 mSDtfsCounter, 377 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 510 GetRequests, 420 SyntacticMatches, 5 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=344occurred in iteration=3, InterpolantAutomatonStates: 65, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 689 NumberOfCodeBlocks, 653 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 830 ConstructedInterpolants, 0 QuantifiedInterpolants, 1644 SizeOfPredicates, 13 NumberOfNonLiveVariables, 589 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 124/268 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-16 12:40:01,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06c883f4-09ba-4b0c-9b84-372e35282cc1/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE