./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41cee810-8a6b-49cf-8768-8ccbb49e5e3e/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41cee810-8a6b-49cf-8768-8ccbb49e5e3e/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41cee810-8a6b-49cf-8768-8ccbb49e5e3e/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41cee810-8a6b-49cf-8768-8ccbb49e5e3e/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41cee810-8a6b-49cf-8768-8ccbb49e5e3e/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41cee810-8a6b-49cf-8768-8ccbb49e5e3e/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9eb5d9094342cfaa74d8ea4903febd735be5757c093d69b0f8dbb2a26886fda6 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 11:20:04,480 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:20:04,482 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:20:04,507 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:20:04,507 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:20:04,508 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:20:04,510 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:20:04,512 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:20:04,516 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:20:04,522 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:20:04,524 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:20:04,526 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:20:04,527 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:20:04,529 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:20:04,530 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:20:04,534 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:20:04,537 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:20:04,538 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:20:04,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:20:04,543 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:20:04,548 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:20:04,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:20:04,551 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:20:04,553 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:20:04,562 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:20:04,566 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:20:04,566 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:20:04,567 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:20:04,569 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:20:04,570 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:20:04,572 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:20:04,573 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:20:04,574 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:20:04,575 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:20:04,576 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:20:04,578 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:20:04,579 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:20:04,579 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:20:04,579 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:20:04,581 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:20:04,582 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:20:04,583 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41cee810-8a6b-49cf-8768-8ccbb49e5e3e/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 11:20:04,619 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:20:04,619 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:20:04,620 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:20:04,620 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:20:04,621 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:20:04,621 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:20:04,622 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:20:04,622 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:20:04,622 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:20:04,623 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:20:04,624 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:20:04,624 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:20:04,624 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:20:04,624 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:20:04,625 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:20:04,625 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:20:04,625 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:20:04,625 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:20:04,625 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 11:20:04,626 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:20:04,626 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:20:04,626 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:20:04,626 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:20:04,626 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:20:04,627 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:20:04,627 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:20:04,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:20:04,627 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:20:04,628 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:20:04,628 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:20:04,628 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:20:04,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:20:04,629 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:20:04,629 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:20:04,629 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:20:04,630 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_41cee810-8a6b-49cf-8768-8ccbb49e5e3e/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41cee810-8a6b-49cf-8768-8ccbb49e5e3e/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9eb5d9094342cfaa74d8ea4903febd735be5757c093d69b0f8dbb2a26886fda6 [2022-11-20 11:20:04,963 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:20:05,002 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:20:05,005 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:20:05,007 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:20:05,008 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:20:05,009 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41cee810-8a6b-49cf-8768-8ccbb49e5e3e/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c [2022-11-20 11:20:08,102 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:20:08,311 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:20:08,312 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41cee810-8a6b-49cf-8768-8ccbb49e5e3e/sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c [2022-11-20 11:20:08,321 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41cee810-8a6b-49cf-8768-8ccbb49e5e3e/bin/uautomizer-ug76WZFUDN/data/23f6d770a/ad58714df75749b5a3e9ed0e40146195/FLAG3c996217c [2022-11-20 11:20:08,369 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41cee810-8a6b-49cf-8768-8ccbb49e5e3e/bin/uautomizer-ug76WZFUDN/data/23f6d770a/ad58714df75749b5a3e9ed0e40146195 [2022-11-20 11:20:08,371 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:20:08,373 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:20:08,384 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:20:08,384 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:20:08,388 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:20:08,389 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:20:08" (1/1) ... [2022-11-20 11:20:08,391 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63172a5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:20:08, skipping insertion in model container [2022-11-20 11:20:08,391 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:20:08" (1/1) ... [2022-11-20 11:20:08,400 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:20:08,432 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:20:08,655 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41cee810-8a6b-49cf-8768-8ccbb49e5e3e/sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c[2599,2612] [2022-11-20 11:20:08,667 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:20:08,679 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:20:08,706 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41cee810-8a6b-49cf-8768-8ccbb49e5e3e/sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c[2599,2612] [2022-11-20 11:20:08,712 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:20:08,729 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:20:08,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:20:08 WrapperNode [2022-11-20 11:20:08,730 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:20:08,731 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:20:08,731 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:20:08,731 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:20:08,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:20:08" (1/1) ... [2022-11-20 11:20:08,750 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:20:08" (1/1) ... [2022-11-20 11:20:08,786 INFO L138 Inliner]: procedures = 25, calls = 52, calls flagged for inlining = 16, calls inlined = 28, statements flattened = 365 [2022-11-20 11:20:08,786 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:20:08,787 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:20:08,787 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:20:08,788 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:20:08,799 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:20:08" (1/1) ... [2022-11-20 11:20:08,799 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:20:08" (1/1) ... [2022-11-20 11:20:08,804 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:20:08" (1/1) ... [2022-11-20 11:20:08,805 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:20:08" (1/1) ... [2022-11-20 11:20:08,816 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:20:08" (1/1) ... [2022-11-20 11:20:08,825 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:20:08" (1/1) ... [2022-11-20 11:20:08,828 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:20:08" (1/1) ... [2022-11-20 11:20:08,830 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:20:08" (1/1) ... [2022-11-20 11:20:08,840 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:20:08,843 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:20:08,844 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:20:08,844 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:20:08,845 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:20:08" (1/1) ... [2022-11-20 11:20:08,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:20:08,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41cee810-8a6b-49cf-8768-8ccbb49e5e3e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:20:08,876 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41cee810-8a6b-49cf-8768-8ccbb49e5e3e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:20:08,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41cee810-8a6b-49cf-8768-8ccbb49e5e3e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:20:08,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:20:08,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:20:08,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:20:08,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:20:08,929 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 11:20:08,929 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 11:20:08,930 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 11:20:08,930 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 11:20:08,930 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 11:20:08,930 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 11:20:08,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:20:08,930 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 11:20:08,931 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 11:20:08,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 11:20:08,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:20:08,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:20:08,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:20:08,933 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 11:20:09,108 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:20:09,110 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:20:10,014 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:20:11,445 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:20:11,445 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-20 11:20:11,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:20:11 BoogieIcfgContainer [2022-11-20 11:20:11,448 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:20:11,450 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:20:11,450 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:20:11,453 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:20:11,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:20:08" (1/3) ... [2022-11-20 11:20:11,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31f95daa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:20:11, skipping insertion in model container [2022-11-20 11:20:11,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:20:08" (2/3) ... [2022-11-20 11:20:11,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31f95daa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:20:11, skipping insertion in model container [2022-11-20 11:20:11,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:20:11" (3/3) ... [2022-11-20 11:20:11,457 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum2.wvr.c [2022-11-20 11:20:11,466 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:20:11,476 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:20:11,476 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2022-11-20 11:20:11,477 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:20:11,930 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 11:20:11,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 242 places, 248 transitions, 520 flow [2022-11-20 11:20:12,123 INFO L130 PetriNetUnfolder]: 16/245 cut-off events. [2022-11-20 11:20:12,125 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 11:20:12,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 245 events. 16/245 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 372 event pairs, 0 based on Foata normal form. 0/183 useless extension candidates. Maximal degree in co-relation 192. Up to 2 conditions per place. [2022-11-20 11:20:12,133 INFO L82 GeneralOperation]: Start removeDead. Operand has 242 places, 248 transitions, 520 flow [2022-11-20 11:20:12,145 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 219 places, 224 transitions, 463 flow [2022-11-20 11:20:12,165 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:20:12,173 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;@27c75052, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:20:12,173 INFO L358 AbstractCegarLoop]: Starting to check reachability of 91 error locations. [2022-11-20 11:20:12,201 INFO L130 PetriNetUnfolder]: 3/63 cut-off events. [2022-11-20 11:20:12,204 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:20:12,204 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:20:12,205 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] [2022-11-20 11:20:12,207 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2022-11-20 11:20:12,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:20:12,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1294000257, now seen corresponding path program 1 times [2022-11-20 11:20:12,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:20:12,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196562355] [2022-11-20 11:20:12,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:12,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:20:12,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:12,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:20:12,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:20:12,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196562355] [2022-11-20 11:20:12,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196562355] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:20:12,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:20:12,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:20:12,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166112823] [2022-11-20 11:20:12,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:20:12,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:20:12,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:20:12,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:20:12,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:20:12,763 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 248 [2022-11-20 11:20:12,767 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 224 transitions, 463 flow. Second operand has 4 states, 4 states have (on average 168.5) internal successors, (674), 4 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:20:12,767 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:20:12,768 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 248 [2022-11-20 11:20:12,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:20:18,947 INFO L130 PetriNetUnfolder]: 4437/7987 cut-off events. [2022-11-20 11:20:18,947 INFO L131 PetriNetUnfolder]: For 1010/1024 co-relation queries the response was YES. [2022-11-20 11:20:18,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14353 conditions, 7987 events. 4437/7987 cut-off events. For 1010/1024 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 56864 event pairs, 2142 based on Foata normal form. 638/3197 useless extension candidates. Maximal degree in co-relation 6922. Up to 2896 conditions per place. [2022-11-20 11:20:19,048 INFO L137 encePairwiseOnDemand]: 207/248 looper letters, 84 selfloop transitions, 9 changer transitions 5/239 dead transitions. [2022-11-20 11:20:19,049 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 239 transitions, 694 flow [2022-11-20 11:20:19,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:20:19,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:20:19,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 984 transitions. [2022-11-20 11:20:19,075 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7935483870967742 [2022-11-20 11:20:19,076 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 984 transitions. [2022-11-20 11:20:19,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 984 transitions. [2022-11-20 11:20:19,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:20:19,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 984 transitions. [2022-11-20 11:20:19,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 196.8) internal successors, (984), 5 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:20:19,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 248.0) internal successors, (1488), 6 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:20:19,106 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 248.0) internal successors, (1488), 6 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:20:19,108 INFO L175 Difference]: Start difference. First operand has 219 places, 224 transitions, 463 flow. Second operand 5 states and 984 transitions. [2022-11-20 11:20:19,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 239 transitions, 694 flow [2022-11-20 11:20:19,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 239 transitions, 676 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 11:20:19,120 INFO L231 Difference]: Finished difference. Result has 203 places, 198 transitions, 455 flow [2022-11-20 11:20:19,123 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=455, PETRI_PLACES=203, PETRI_TRANSITIONS=198} [2022-11-20 11:20:19,126 INFO L288 CegarLoopForPetriNet]: 219 programPoint places, -16 predicate places. [2022-11-20 11:20:19,127 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 198 transitions, 455 flow [2022-11-20 11:20:19,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 168.5) internal successors, (674), 4 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:20:19,128 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:20:19,128 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] [2022-11-20 11:20:19,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:20:19,129 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2022-11-20 11:20:19,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:20:19,129 INFO L85 PathProgramCache]: Analyzing trace with hash 300114495, now seen corresponding path program 1 times [2022-11-20 11:20:19,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:20:19,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786063369] [2022-11-20 11:20:19,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:19,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:20:19,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:19,395 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:20:19,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:20:19,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786063369] [2022-11-20 11:20:19,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786063369] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:20:19,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516553459] [2022-11-20 11:20:19,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:19,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:20:19,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41cee810-8a6b-49cf-8768-8ccbb49e5e3e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:20:19,403 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41cee810-8a6b-49cf-8768-8ccbb49e5e3e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:20:19,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41cee810-8a6b-49cf-8768-8ccbb49e5e3e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:20:19,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:19,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:20:19,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:20:19,917 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:20:19,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:20:20,018 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:20:20,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516553459] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:20:20,020 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:20:20,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-20 11:20:20,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788944625] [2022-11-20 11:20:20,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:20:20,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:20:20,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:20:20,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:20:20,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:20:20,030 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 248 [2022-11-20 11:20:20,033 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 198 transitions, 455 flow. Second operand has 12 states, 12 states have (on average 169.66666666666666) internal successors, (2036), 12 states have internal predecessors, (2036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:20:20,033 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:20:20,033 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 248 [2022-11-20 11:20:20,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:20:31,293 INFO L130 PetriNetUnfolder]: 11091/19853 cut-off events. [2022-11-20 11:20:31,293 INFO L131 PetriNetUnfolder]: For 747/782 co-relation queries the response was YES. [2022-11-20 11:20:31,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35042 conditions, 19853 events. 11091/19853 cut-off events. For 747/782 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 151974 event pairs, 5355 based on Foata normal form. 6/6314 useless extension candidates. Maximal degree in co-relation 27832. Up to 2889 conditions per place. [2022-11-20 11:20:31,450 INFO L137 encePairwiseOnDemand]: 233/248 looper letters, 186 selfloop transitions, 40 changer transitions 0/367 dead transitions. [2022-11-20 11:20:31,451 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 367 transitions, 1319 flow [2022-11-20 11:20:31,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 11:20:31,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 11:20:31,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3238 transitions. [2022-11-20 11:20:31,459 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.725358422939068 [2022-11-20 11:20:31,459 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3238 transitions. [2022-11-20 11:20:31,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3238 transitions. [2022-11-20 11:20:31,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:20:31,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3238 transitions. [2022-11-20 11:20:31,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 179.88888888888889) internal successors, (3238), 18 states have internal predecessors, (3238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:20:31,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 248.0) internal successors, (4712), 19 states have internal predecessors, (4712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:20:31,484 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 248.0) internal successors, (4712), 19 states have internal predecessors, (4712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:20:31,484 INFO L175 Difference]: Start difference. First operand has 203 places, 198 transitions, 455 flow. Second operand 18 states and 3238 transitions. [2022-11-20 11:20:31,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 367 transitions, 1319 flow [2022-11-20 11:20:31,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 367 transitions, 1314 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:20:31,498 INFO L231 Difference]: Finished difference. Result has 218 places, 225 transitions, 688 flow [2022-11-20 11:20:31,498 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=688, PETRI_PLACES=218, PETRI_TRANSITIONS=225} [2022-11-20 11:20:31,499 INFO L288 CegarLoopForPetriNet]: 219 programPoint places, -1 predicate places. [2022-11-20 11:20:31,499 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 225 transitions, 688 flow [2022-11-20 11:20:31,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 169.66666666666666) internal successors, (2036), 12 states have internal predecessors, (2036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:20:31,502 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:20:31,502 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] [2022-11-20 11:20:31,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41cee810-8a6b-49cf-8768-8ccbb49e5e3e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:20:31,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41cee810-8a6b-49cf-8768-8ccbb49e5e3e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:20:31,708 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2022-11-20 11:20:31,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:20:31,709 INFO L85 PathProgramCache]: Analyzing trace with hash 713616129, now seen corresponding path program 1 times [2022-11-20 11:20:31,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:20:31,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186094723] [2022-11-20 11:20:31,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:31,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:20:31,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:31,936 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:20:31,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:20:31,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186094723] [2022-11-20 11:20:31,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186094723] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:20:31,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444979165] [2022-11-20 11:20:31,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:31,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:20:31,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41cee810-8a6b-49cf-8768-8ccbb49e5e3e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:20:31,941 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41cee810-8a6b-49cf-8768-8ccbb49e5e3e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:20:31,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41cee810-8a6b-49cf-8768-8ccbb49e5e3e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:20:32,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:32,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:20:32,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:20:32,338 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:20:32,338 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:20:32,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444979165] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:20:32,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:20:32,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 11:20:32,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443573364] [2022-11-20 11:20:32,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:20:32,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:20:32,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:20:32,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:20:32,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:20:32,342 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 248 [2022-11-20 11:20:32,343 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 225 transitions, 688 flow. Second operand has 6 states, 6 states have (on average 169.33333333333334) internal successors, (1016), 6 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) [2022-11-20 11:20:32,344 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:20:32,344 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 248 [2022-11-20 11:20:32,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:20:41,869 INFO L130 PetriNetUnfolder]: 11091/19845 cut-off events. [2022-11-20 11:20:41,870 INFO L131 PetriNetUnfolder]: For 841/876 co-relation queries the response was YES. [2022-11-20 11:20:41,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35079 conditions, 19845 events. 11091/19845 cut-off events. For 841/876 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 152190 event pairs, 5355 based on Foata normal form. 8/6308 useless extension candidates. Maximal degree in co-relation 28032. Up to 11512 conditions per place. [2022-11-20 11:20:42,064 INFO L137 encePairwiseOnDemand]: 237/248 looper letters, 85 selfloop transitions, 27 changer transitions 0/253 dead transitions. [2022-11-20 11:20:42,064 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 253 transitions, 940 flow [2022-11-20 11:20:42,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:20:42,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:20:42,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1262 transitions. [2022-11-20 11:20:42,069 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7269585253456221 [2022-11-20 11:20:42,069 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1262 transitions. [2022-11-20 11:20:42,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1262 transitions. [2022-11-20 11:20:42,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:20:42,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1262 transitions. [2022-11-20 11:20:42,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 180.28571428571428) internal successors, (1262), 7 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:20:42,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 248.0) internal successors, (1984), 8 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:20:42,080 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 248.0) internal successors, (1984), 8 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:20:42,080 INFO L175 Difference]: Start difference. First operand has 218 places, 225 transitions, 688 flow. Second operand 7 states and 1262 transitions. [2022-11-20 11:20:42,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 253 transitions, 940 flow [2022-11-20 11:20:42,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 253 transitions, 866 flow, removed 26 selfloop flow, removed 5 redundant places. [2022-11-20 11:20:42,089 INFO L231 Difference]: Finished difference. Result has 213 places, 217 transitions, 614 flow [2022-11-20 11:20:42,090 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=614, PETRI_PLACES=213, PETRI_TRANSITIONS=217} [2022-11-20 11:20:42,091 INFO L288 CegarLoopForPetriNet]: 219 programPoint places, -6 predicate places. [2022-11-20 11:20:42,091 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 217 transitions, 614 flow [2022-11-20 11:20:42,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 169.33333333333334) internal successors, (1016), 6 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) [2022-11-20 11:20:42,092 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:20:42,092 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] [2022-11-20 11:20:42,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41cee810-8a6b-49cf-8768-8ccbb49e5e3e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:20:42,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41cee810-8a6b-49cf-8768-8ccbb49e5e3e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:20:42,304 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2022-11-20 11:20:42,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:20:42,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1345892481, now seen corresponding path program 2 times [2022-11-20 11:20:42,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:20:42,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266001777] [2022-11-20 11:20:42,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:42,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:20:42,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:42,689 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:20:42,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:20:42,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266001777] [2022-11-20 11:20:42,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266001777] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:20:42,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881886150] [2022-11-20 11:20:42,690 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:20:42,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:20:42,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41cee810-8a6b-49cf-8768-8ccbb49e5e3e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:20:42,697 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41cee810-8a6b-49cf-8768-8ccbb49e5e3e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:20:42,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41cee810-8a6b-49cf-8768-8ccbb49e5e3e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:20:43,030 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:20:43,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:20:43,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 11:20:43,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:20:43,223 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-20 11:20:43,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:20:43,425 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-20 11:20:43,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881886150] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:20:43,425 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:20:43,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-20 11:20:43,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806364236] [2022-11-20 11:20:43,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:20:43,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:20:43,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:20:43,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:20:43,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:20:43,432 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 248 [2022-11-20 11:20:43,436 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 217 transitions, 614 flow. Second operand has 18 states, 18 states have (on average 150.61111111111111) internal successors, (2711), 18 states have internal predecessors, (2711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:20:43,436 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:20:43,436 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 248 [2022-11-20 11:20:43,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand