./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc47cfe6-7f24-4225-ab88-5848dd05e86d/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc47cfe6-7f24-4225-ab88-5848dd05e86d/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc47cfe6-7f24-4225-ab88-5848dd05e86d/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc47cfe6-7f24-4225-ab88-5848dd05e86d/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc47cfe6-7f24-4225-ab88-5848dd05e86d/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc47cfe6-7f24-4225-ab88-5848dd05e86d/bin/uautomizer-vX5HgA9Q3a --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash eecffe8522a4364afb75ce7fb01800caae42a8a3ed11b56f212b94255e6f04bc --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 16:32:05,453 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:32:05,456 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:32:05,498 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:32:05,499 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:32:05,525 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:32:05,526 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:32:05,528 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:32:05,530 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:32:05,531 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:32:05,532 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:32:05,533 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:32:05,533 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:32:05,534 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:32:05,535 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:32:05,537 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:32:05,538 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:32:05,538 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:32:05,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:32:05,542 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:32:05,543 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:32:05,548 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:32:05,549 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:32:05,550 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:32:05,553 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:32:05,553 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:32:05,554 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:32:05,555 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:32:05,555 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:32:05,556 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:32:05,556 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:32:05,557 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:32:05,558 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:32:05,559 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:32:05,567 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:32:05,567 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:32:05,569 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:32:05,569 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:32:05,569 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:32:05,573 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:32:05,573 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:32:05,574 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc47cfe6-7f24-4225-ab88-5848dd05e86d/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-21 16:32:05,616 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:32:05,616 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:32:05,617 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:32:05,617 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:32:05,618 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:32:05,618 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:32:05,619 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:32:05,619 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:32:05,620 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:32:05,620 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:32:05,621 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:32:05,621 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 16:32:05,622 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:32:05,622 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:32:05,622 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:32:05,622 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:32:05,622 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:32:05,624 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:32:05,624 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-21 16:32:05,625 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:32:05,625 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:32:05,625 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:32:05,625 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:32:05,626 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:32:05,626 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:32:05,626 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:32:05,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:32:05,627 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:32:05,627 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:32:05,628 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:32:05,628 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:32:05,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:32:05,628 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:32:05,629 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:32:05,629 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:32:05,629 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_bc47cfe6-7f24-4225-ab88-5848dd05e86d/bin/uautomizer-vX5HgA9Q3a/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc47cfe6-7f24-4225-ab88-5848dd05e86d/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eecffe8522a4364afb75ce7fb01800caae42a8a3ed11b56f212b94255e6f04bc [2022-11-21 16:32:05,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:32:06,001 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:32:06,004 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:32:06,005 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:32:06,005 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:32:06,007 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc47cfe6-7f24-4225-ab88-5848dd05e86d/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c [2022-11-21 16:32:08,989 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:32:09,228 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:32:09,228 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc47cfe6-7f24-4225-ab88-5848dd05e86d/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c [2022-11-21 16:32:09,236 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc47cfe6-7f24-4225-ab88-5848dd05e86d/bin/uautomizer-vX5HgA9Q3a/data/703c491e3/603cfe3a1cb94d87813cc06366689bea/FLAG8556cdc98 [2022-11-21 16:32:09,251 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc47cfe6-7f24-4225-ab88-5848dd05e86d/bin/uautomizer-vX5HgA9Q3a/data/703c491e3/603cfe3a1cb94d87813cc06366689bea [2022-11-21 16:32:09,254 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:32:09,255 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:32:09,257 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:32:09,257 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:32:09,260 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:32:09,261 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:32:09" (1/1) ... [2022-11-21 16:32:09,262 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74f0e5f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:32:09, skipping insertion in model container [2022-11-21 16:32:09,263 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:32:09" (1/1) ... [2022-11-21 16:32:09,271 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:32:09,288 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:32:09,524 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_bc47cfe6-7f24-4225-ab88-5848dd05e86d/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c[2690,2703] [2022-11-21 16:32:09,532 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:32:09,543 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:32:09,567 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_bc47cfe6-7f24-4225-ab88-5848dd05e86d/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c[2690,2703] [2022-11-21 16:32:09,571 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:32:09,586 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:32:09,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:32:09 WrapperNode [2022-11-21 16:32:09,587 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:32:09,588 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:32:09,588 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:32:09,588 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:32:09,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:32:09" (1/1) ... [2022-11-21 16:32:09,605 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:32:09" (1/1) ... [2022-11-21 16:32:09,627 INFO L138 Inliner]: procedures = 26, calls = 43, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 125 [2022-11-21 16:32:09,627 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:32:09,628 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:32:09,628 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:32:09,628 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:32:09,637 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:32:09" (1/1) ... [2022-11-21 16:32:09,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:32:09" (1/1) ... [2022-11-21 16:32:09,641 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:32:09" (1/1) ... [2022-11-21 16:32:09,641 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:32:09" (1/1) ... [2022-11-21 16:32:09,649 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:32:09" (1/1) ... [2022-11-21 16:32:09,654 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:32:09" (1/1) ... [2022-11-21 16:32:09,656 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:32:09" (1/1) ... [2022-11-21 16:32:09,657 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:32:09" (1/1) ... [2022-11-21 16:32:09,660 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:32:09,661 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:32:09,661 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:32:09,661 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:32:09,662 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:32:09" (1/1) ... [2022-11-21 16:32:09,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:32:09,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc47cfe6-7f24-4225-ab88-5848dd05e86d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:32:09,693 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc47cfe6-7f24-4225-ab88-5848dd05e86d/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:32:09,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc47cfe6-7f24-4225-ab88-5848dd05e86d/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:32:09,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:32:09,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 16:32:09,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 16:32:09,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 16:32:09,733 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-21 16:32:09,734 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-21 16:32:09,734 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-21 16:32:09,734 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-21 16:32:09,734 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-21 16:32:09,734 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-21 16:32:09,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:32:09,734 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-21 16:32:09,735 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-21 16:32:09,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 16:32:09,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:32:09,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:32:09,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 16:32:09,737 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 16:32:09,878 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:32:09,881 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:32:10,381 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:32:10,435 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:32:10,438 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-21 16:32:10,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:32:10 BoogieIcfgContainer [2022-11-21 16:32:10,441 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:32:10,444 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:32:10,445 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:32:10,448 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:32:10,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:32:09" (1/3) ... [2022-11-21 16:32:10,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@da069d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:32:10, skipping insertion in model container [2022-11-21 16:32:10,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:32:09" (2/3) ... [2022-11-21 16:32:10,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@da069d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:32:10, skipping insertion in model container [2022-11-21 16:32:10,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:32:10" (3/3) ... [2022-11-21 16:32:10,454 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-simple-array-sum.wvr.c [2022-11-21 16:32:10,464 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 16:32:10,476 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:32:10,477 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-21 16:32:10,477 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 16:32:10,575 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-21 16:32:10,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 199 places, 205 transitions, 434 flow [2022-11-21 16:32:10,758 INFO L130 PetriNetUnfolder]: 16/202 cut-off events. [2022-11-21 16:32:10,759 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-21 16:32:10,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 202 events. 16/202 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 182 event pairs, 0 based on Foata normal form. 0/176 useless extension candidates. Maximal degree in co-relation 158. Up to 3 conditions per place. [2022-11-21 16:32:10,766 INFO L82 GeneralOperation]: Start removeDead. Operand has 199 places, 205 transitions, 434 flow [2022-11-21 16:32:10,779 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 176 places, 181 transitions, 377 flow [2022-11-21 16:32:10,798 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:32:10,806 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;@3b75a578, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:32:10,807 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-11-21 16:32:10,839 INFO L130 PetriNetUnfolder]: 3/59 cut-off events. [2022-11-21 16:32:10,839 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 16:32:10,839 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:32:10,840 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] [2022-11-21 16:32:10,842 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-21 16:32:10,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:32:10,849 INFO L85 PathProgramCache]: Analyzing trace with hash 202372782, now seen corresponding path program 1 times [2022-11-21 16:32:10,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:32:10,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526971082] [2022-11-21 16:32:10,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:32:10,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:32:11,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:32:11,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:32:11,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:32:11,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526971082] [2022-11-21 16:32:11,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526971082] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:32:11,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:32:11,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:32:11,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390995046] [2022-11-21 16:32:11,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:32:11,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:32:11,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:32:11,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:32:11,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:32:11,333 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 205 [2022-11-21 16:32:11,337 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 181 transitions, 377 flow. Second operand has 4 states, 4 states have (on average 163.5) internal successors, (654), 4 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:11,338 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:32:11,338 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 205 [2022-11-21 16:32:11,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:32:11,529 INFO L130 PetriNetUnfolder]: 37/396 cut-off events. [2022-11-21 16:32:11,529 INFO L131 PetriNetUnfolder]: For 56/56 co-relation queries the response was YES. [2022-11-21 16:32:11,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 526 conditions, 396 events. 37/396 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1353 event pairs, 14 based on Foata normal form. 46/386 useless extension candidates. Maximal degree in co-relation 277. Up to 52 conditions per place. [2022-11-21 16:32:11,539 INFO L137 encePairwiseOnDemand]: 183/205 looper letters, 46 selfloop transitions, 9 changer transitions 4/196 dead transitions. [2022-11-21 16:32:11,540 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 196 transitions, 532 flow [2022-11-21 16:32:11,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:32:11,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:32:11,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 883 transitions. [2022-11-21 16:32:11,565 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8614634146341463 [2022-11-21 16:32:11,566 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 883 transitions. [2022-11-21 16:32:11,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 883 transitions. [2022-11-21 16:32:11,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:32:11,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 883 transitions. [2022-11-21 16:32:11,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 176.6) internal successors, (883), 5 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:11,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:11,589 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:11,590 INFO L175 Difference]: Start difference. First operand has 176 places, 181 transitions, 377 flow. Second operand 5 states and 883 transitions. [2022-11-21 16:32:11,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 196 transitions, 532 flow [2022-11-21 16:32:11,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 196 transitions, 514 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-21 16:32:11,599 INFO L231 Difference]: Finished difference. Result has 178 places, 175 transitions, 409 flow [2022-11-21 16:32:11,602 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=409, PETRI_PLACES=178, PETRI_TRANSITIONS=175} [2022-11-21 16:32:11,605 INFO L288 CegarLoopForPetriNet]: 176 programPoint places, 2 predicate places. [2022-11-21 16:32:11,605 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 175 transitions, 409 flow [2022-11-21 16:32:11,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 163.5) internal successors, (654), 4 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:11,606 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:32:11,607 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-21 16:32:11,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 16:32:11,607 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-21 16:32:11,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:32:11,608 INFO L85 PathProgramCache]: Analyzing trace with hash -623107824, now seen corresponding path program 1 times [2022-11-21 16:32:11,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:32:11,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907966850] [2022-11-21 16:32:11,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:32:11,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:32:11,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:32:11,831 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:32:11,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:32:11,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907966850] [2022-11-21 16:32:11,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907966850] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:32:11,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673553464] [2022-11-21 16:32:11,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:32:11,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:32:11,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc47cfe6-7f24-4225-ab88-5848dd05e86d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:32:11,836 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc47cfe6-7f24-4225-ab88-5848dd05e86d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:32:11,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc47cfe6-7f24-4225-ab88-5848dd05e86d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 16:32:11,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:32:11,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:32:11,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:32:12,056 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:32:12,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:32:12,118 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:32:12,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673553464] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:32:12,119 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:32:12,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-21 16:32:12,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798350554] [2022-11-21 16:32:12,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:32:12,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 16:32:12,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:32:12,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 16:32:12,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-21 16:32:12,127 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 205 [2022-11-21 16:32:12,130 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 175 transitions, 409 flow. Second operand has 12 states, 12 states have (on average 164.66666666666666) internal successors, (1976), 12 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:12,130 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:32:12,130 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 205 [2022-11-21 16:32:12,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:32:12,646 INFO L130 PetriNetUnfolder]: 91/885 cut-off events. [2022-11-21 16:32:12,647 INFO L131 PetriNetUnfolder]: For 67/67 co-relation queries the response was YES. [2022-11-21 16:32:12,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1199 conditions, 885 events. 91/885 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 4601 event pairs, 35 based on Foata normal form. 6/771 useless extension candidates. Maximal degree in co-relation 764. Up to 45 conditions per place. [2022-11-21 16:32:12,655 INFO L137 encePairwiseOnDemand]: 190/205 looper letters, 91 selfloop transitions, 40 changer transitions 0/268 dead transitions. [2022-11-21 16:32:12,655 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 268 transitions, 931 flow [2022-11-21 16:32:12,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 16:32:12,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-21 16:32:12,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3053 transitions. [2022-11-21 16:32:12,662 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8273712737127371 [2022-11-21 16:32:12,662 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3053 transitions. [2022-11-21 16:32:12,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3053 transitions. [2022-11-21 16:32:12,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:32:12,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3053 transitions. [2022-11-21 16:32:12,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 169.61111111111111) internal successors, (3053), 18 states have internal predecessors, (3053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:12,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 205.0) internal successors, (3895), 19 states have internal predecessors, (3895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:12,682 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 205.0) internal successors, (3895), 19 states have internal predecessors, (3895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:12,683 INFO L175 Difference]: Start difference. First operand has 178 places, 175 transitions, 409 flow. Second operand 18 states and 3053 transitions. [2022-11-21 16:32:12,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 268 transitions, 931 flow [2022-11-21 16:32:12,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 268 transitions, 926 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 16:32:12,690 INFO L231 Difference]: Finished difference. Result has 194 places, 202 transitions, 642 flow [2022-11-21 16:32:12,691 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=642, PETRI_PLACES=194, PETRI_TRANSITIONS=202} [2022-11-21 16:32:12,692 INFO L288 CegarLoopForPetriNet]: 176 programPoint places, 18 predicate places. [2022-11-21 16:32:12,692 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 202 transitions, 642 flow [2022-11-21 16:32:12,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 164.66666666666666) internal successors, (1976), 12 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:12,693 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:32:12,694 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] [2022-11-21 16:32:12,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc47cfe6-7f24-4225-ab88-5848dd05e86d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 16:32:12,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc47cfe6-7f24-4225-ab88-5848dd05e86d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:32:12,900 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-21 16:32:12,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:32:12,901 INFO L85 PathProgramCache]: Analyzing trace with hash -2136473005, now seen corresponding path program 1 times [2022-11-21 16:32:12,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:32:12,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016351412] [2022-11-21 16:32:12,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:32:12,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:32:12,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:32:13,025 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:32:13,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:32:13,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016351412] [2022-11-21 16:32:13,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016351412] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:32:13,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989989535] [2022-11-21 16:32:13,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:32:13,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:32:13,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc47cfe6-7f24-4225-ab88-5848dd05e86d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:32:13,028 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc47cfe6-7f24-4225-ab88-5848dd05e86d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:32:13,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc47cfe6-7f24-4225-ab88-5848dd05e86d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 16:32:13,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:32:13,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:32:13,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:32:13,165 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:32:13,166 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:32:13,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989989535] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:32:13,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:32:13,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 16:32:13,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877867615] [2022-11-21 16:32:13,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:32:13,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:32:13,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:32:13,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:32:13,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:32:13,179 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 205 [2022-11-21 16:32:13,181 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 202 transitions, 642 flow. Second operand has 6 states, 6 states have (on average 164.33333333333334) internal successors, (986), 6 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:13,181 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:32:13,181 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 205 [2022-11-21 16:32:13,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:32:13,523 INFO L130 PetriNetUnfolder]: 91/877 cut-off events. [2022-11-21 16:32:13,523 INFO L131 PetriNetUnfolder]: For 161/161 co-relation queries the response was YES. [2022-11-21 16:32:13,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1236 conditions, 877 events. 91/877 cut-off events. For 161/161 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 4567 event pairs, 35 based on Foata normal form. 8/765 useless extension candidates. Maximal degree in co-relation 957. Up to 136 conditions per place. [2022-11-21 16:32:13,532 INFO L137 encePairwiseOnDemand]: 194/205 looper letters, 47 selfloop transitions, 27 changer transitions 0/211 dead transitions. [2022-11-21 16:32:13,533 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 211 transitions, 780 flow [2022-11-21 16:32:13,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:32:13,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 16:32:13,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1189 transitions. [2022-11-21 16:32:13,537 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8285714285714286 [2022-11-21 16:32:13,537 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1189 transitions. [2022-11-21 16:32:13,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1189 transitions. [2022-11-21 16:32:13,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:32:13,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1189 transitions. [2022-11-21 16:32:13,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 169.85714285714286) internal successors, (1189), 7 states have internal predecessors, (1189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:13,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 205.0) internal successors, (1640), 8 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:13,544 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 205.0) internal successors, (1640), 8 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:13,544 INFO L175 Difference]: Start difference. First operand has 194 places, 202 transitions, 642 flow. Second operand 7 states and 1189 transitions. [2022-11-21 16:32:13,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 211 transitions, 780 flow [2022-11-21 16:32:13,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 211 transitions, 706 flow, removed 26 selfloop flow, removed 5 redundant places. [2022-11-21 16:32:13,552 INFO L231 Difference]: Finished difference. Result has 189 places, 194 transitions, 568 flow [2022-11-21 16:32:13,552 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=568, PETRI_PLACES=189, PETRI_TRANSITIONS=194} [2022-11-21 16:32:13,553 INFO L288 CegarLoopForPetriNet]: 176 programPoint places, 13 predicate places. [2022-11-21 16:32:13,554 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 194 transitions, 568 flow [2022-11-21 16:32:13,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 164.33333333333334) internal successors, (986), 6 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:13,554 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:32:13,555 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-21 16:32:13,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc47cfe6-7f24-4225-ab88-5848dd05e86d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 16:32:13,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc47cfe6-7f24-4225-ab88-5848dd05e86d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:32:13,761 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-21 16:32:13,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:32:13,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1111200822, now seen corresponding path program 2 times [2022-11-21 16:32:13,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:32:13,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758682906] [2022-11-21 16:32:13,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:32:13,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:32:13,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:32:14,107 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:32:14,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:32:14,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758682906] [2022-11-21 16:32:14,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758682906] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:32:14,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672799749] [2022-11-21 16:32:14,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 16:32:14,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:32:14,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc47cfe6-7f24-4225-ab88-5848dd05e86d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:32:14,117 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc47cfe6-7f24-4225-ab88-5848dd05e86d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:32:14,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc47cfe6-7f24-4225-ab88-5848dd05e86d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 16:32:14,220 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-21 16:32:14,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:32:14,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 16:32:14,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:32:14,394 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-21 16:32:14,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:32:14,550 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-21 16:32:14,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672799749] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:32:14,551 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:32:14,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-21 16:32:14,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764603785] [2022-11-21 16:32:14,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:32:14,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 16:32:14,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:32:14,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 16:32:14,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-21 16:32:14,557 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 205 [2022-11-21 16:32:14,559 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 194 transitions, 568 flow. Second operand has 18 states, 18 states have (on average 143.61111111111111) internal successors, (2585), 18 states have internal predecessors, (2585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:14,560 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:32:14,560 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 205 [2022-11-21 16:32:14,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:32:16,169 INFO L130 PetriNetUnfolder]: 1289/4409 cut-off events. [2022-11-21 16:32:16,169 INFO L131 PetriNetUnfolder]: For 271/271 co-relation queries the response was YES. [2022-11-21 16:32:16,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6684 conditions, 4409 events. 1289/4409 cut-off events. For 271/271 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 34940 event pairs, 721 based on Foata normal form. 4/3125 useless extension candidates. Maximal degree in co-relation 5444. Up to 287 conditions per place. [2022-11-21 16:32:16,211 INFO L137 encePairwiseOnDemand]: 186/205 looper letters, 169 selfloop transitions, 53 changer transitions 0/338 dead transitions. [2022-11-21 16:32:16,211 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 338 transitions, 1378 flow [2022-11-21 16:32:16,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-21 16:32:16,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-21 16:32:16,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3586 transitions. [2022-11-21 16:32:16,220 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7288617886178862 [2022-11-21 16:32:16,220 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3586 transitions. [2022-11-21 16:32:16,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3586 transitions. [2022-11-21 16:32:16,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:32:16,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3586 transitions. [2022-11-21 16:32:16,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 149.41666666666666) internal successors, (3586), 24 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:16,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 205.0) internal successors, (5125), 25 states have internal predecessors, (5125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:16,244 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 205.0) internal successors, (5125), 25 states have internal predecessors, (5125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:16,244 INFO L175 Difference]: Start difference. First operand has 189 places, 194 transitions, 568 flow. Second operand 24 states and 3586 transitions. [2022-11-21 16:32:16,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 338 transitions, 1378 flow [2022-11-21 16:32:16,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 338 transitions, 1320 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-21 16:32:16,255 INFO L231 Difference]: Finished difference. Result has 202 places, 204 transitions, 673 flow [2022-11-21 16:32:16,256 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=673, PETRI_PLACES=202, PETRI_TRANSITIONS=204} [2022-11-21 16:32:16,258 INFO L288 CegarLoopForPetriNet]: 176 programPoint places, 26 predicate places. [2022-11-21 16:32:16,258 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 204 transitions, 673 flow [2022-11-21 16:32:16,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 143.61111111111111) internal successors, (2585), 18 states have internal predecessors, (2585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:16,261 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:32:16,261 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:32:16,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc47cfe6-7f24-4225-ab88-5848dd05e86d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 16:32:16,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc47cfe6-7f24-4225-ab88-5848dd05e86d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:32:16,468 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-21 16:32:16,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:32:16,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1489071132, now seen corresponding path program 1 times [2022-11-21 16:32:16,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:32:16,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130628952] [2022-11-21 16:32:16,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:32:16,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:32:16,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:32:16,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:32:16,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:32:16,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130628952] [2022-11-21 16:32:16,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130628952] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:32:16,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:32:16,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:32:16,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262977178] [2022-11-21 16:32:16,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:32:16,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:32:16,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:32:16,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:32:16,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:32:16,603 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 205 [2022-11-21 16:32:16,604 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 204 transitions, 673 flow. Second operand has 4 states, 4 states have (on average 176.5) internal successors, (706), 4 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:16,604 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:32:16,604 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 205 [2022-11-21 16:32:16,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:32:17,756 INFO L130 PetriNetUnfolder]: 1723/6096 cut-off events. [2022-11-21 16:32:17,756 INFO L131 PetriNetUnfolder]: For 191/219 co-relation queries the response was YES. [2022-11-21 16:32:17,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9466 conditions, 6096 events. 1723/6096 cut-off events. For 191/219 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 55539 event pairs, 721 based on Foata normal form. 0/4927 useless extension candidates. Maximal degree in co-relation 1314. Up to 1492 conditions per place. [2022-11-21 16:32:17,812 INFO L137 encePairwiseOnDemand]: 199/205 looper letters, 36 selfloop transitions, 4 changer transitions 0/226 dead transitions. [2022-11-21 16:32:17,812 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 226 transitions, 808 flow [2022-11-21 16:32:17,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:32:17,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:32:17,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 917 transitions. [2022-11-21 16:32:17,814 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8946341463414634 [2022-11-21 16:32:17,815 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 917 transitions. [2022-11-21 16:32:17,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 917 transitions. [2022-11-21 16:32:17,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:32:17,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 917 transitions. [2022-11-21 16:32:17,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 183.4) internal successors, (917), 5 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:17,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:17,820 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:17,820 INFO L175 Difference]: Start difference. First operand has 202 places, 204 transitions, 673 flow. Second operand 5 states and 917 transitions. [2022-11-21 16:32:17,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 226 transitions, 808 flow [2022-11-21 16:32:17,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 226 transitions, 729 flow, removed 7 selfloop flow, removed 15 redundant places. [2022-11-21 16:32:17,825 INFO L231 Difference]: Finished difference. Result has 194 places, 207 transitions, 624 flow [2022-11-21 16:32:17,826 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=594, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=624, PETRI_PLACES=194, PETRI_TRANSITIONS=207} [2022-11-21 16:32:17,827 INFO L288 CegarLoopForPetriNet]: 176 programPoint places, 18 predicate places. [2022-11-21 16:32:17,827 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 207 transitions, 624 flow [2022-11-21 16:32:17,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 176.5) internal successors, (706), 4 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:17,827 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:32:17,827 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:32:17,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 16:32:17,828 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-21 16:32:17,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:32:17,828 INFO L85 PathProgramCache]: Analyzing trace with hash -306758919, now seen corresponding path program 1 times [2022-11-21 16:32:17,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:32:17,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300696775] [2022-11-21 16:32:17,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:32:17,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:32:17,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:32:17,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:32:17,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:32:17,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300696775] [2022-11-21 16:32:17,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300696775] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:32:17,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:32:17,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:32:17,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143940133] [2022-11-21 16:32:17,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:32:17,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:32:17,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:32:17,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:32:17,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:32:17,928 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 205 [2022-11-21 16:32:17,929 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 207 transitions, 624 flow. Second operand has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:17,929 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:32:17,929 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 205 [2022-11-21 16:32:17,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:32:18,733 INFO L130 PetriNetUnfolder]: 1240/3373 cut-off events. [2022-11-21 16:32:18,733 INFO L131 PetriNetUnfolder]: For 696/696 co-relation queries the response was YES. [2022-11-21 16:32:18,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6181 conditions, 3373 events. 1240/3373 cut-off events. For 696/696 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 30317 event pairs, 644 based on Foata normal form. 0/2764 useless extension candidates. Maximal degree in co-relation 4290. Up to 1317 conditions per place. [2022-11-21 16:32:18,776 INFO L137 encePairwiseOnDemand]: 199/205 looper letters, 33 selfloop transitions, 4 changer transitions 0/226 dead transitions. [2022-11-21 16:32:18,776 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 226 transitions, 746 flow [2022-11-21 16:32:18,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:32:18,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:32:18,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 914 transitions. [2022-11-21 16:32:18,780 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8917073170731707 [2022-11-21 16:32:18,780 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 914 transitions. [2022-11-21 16:32:18,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 914 transitions. [2022-11-21 16:32:18,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:32:18,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 914 transitions. [2022-11-21 16:32:18,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 182.8) internal successors, (914), 5 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:18,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:18,787 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:18,787 INFO L175 Difference]: Start difference. First operand has 194 places, 207 transitions, 624 flow. Second operand 5 states and 914 transitions. [2022-11-21 16:32:18,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 226 transitions, 746 flow [2022-11-21 16:32:18,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 226 transitions, 744 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 16:32:18,793 INFO L231 Difference]: Finished difference. Result has 200 places, 210 transitions, 652 flow [2022-11-21 16:32:18,794 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=622, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=652, PETRI_PLACES=200, PETRI_TRANSITIONS=210} [2022-11-21 16:32:18,795 INFO L288 CegarLoopForPetriNet]: 176 programPoint places, 24 predicate places. [2022-11-21 16:32:18,795 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 210 transitions, 652 flow [2022-11-21 16:32:18,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:18,796 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:32:18,796 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:32:18,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 16:32:18,796 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-21 16:32:18,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:32:18,797 INFO L85 PathProgramCache]: Analyzing trace with hash 800919834, now seen corresponding path program 1 times [2022-11-21 16:32:18,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:32:18,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078198186] [2022-11-21 16:32:18,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:32:18,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:32:18,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:32:18,932 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:32:18,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:32:18,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078198186] [2022-11-21 16:32:18,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078198186] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:32:18,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882891128] [2022-11-21 16:32:18,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:32:18,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:32:18,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc47cfe6-7f24-4225-ab88-5848dd05e86d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:32:18,935 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc47cfe6-7f24-4225-ab88-5848dd05e86d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:32:18,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc47cfe6-7f24-4225-ab88-5848dd05e86d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 16:32:19,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:32:19,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 16:32:19,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:32:19,226 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-21 16:32:19,226 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:32:19,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882891128] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:32:19,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:32:19,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-11-21 16:32:19,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666032728] [2022-11-21 16:32:19,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:32:19,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 16:32:19,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:32:19,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 16:32:19,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-21 16:32:19,231 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 205 [2022-11-21 16:32:19,232 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 210 transitions, 652 flow. Second operand has 7 states, 7 states have (on average 152.57142857142858) internal successors, (1068), 7 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:19,232 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:32:19,233 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 205 [2022-11-21 16:32:19,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:32:23,378 INFO L130 PetriNetUnfolder]: 6623/21712 cut-off events. [2022-11-21 16:32:23,378 INFO L131 PetriNetUnfolder]: For 4075/4351 co-relation queries the response was YES. [2022-11-21 16:32:23,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41220 conditions, 21712 events. 6623/21712 cut-off events. For 4075/4351 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 250019 event pairs, 5622 based on Foata normal form. 0/18814 useless extension candidates. Maximal degree in co-relation 25261. Up to 7744 conditions per place. [2022-11-21 16:32:23,571 INFO L137 encePairwiseOnDemand]: 191/205 looper letters, 123 selfloop transitions, 23 changer transitions 0/283 dead transitions. [2022-11-21 16:32:23,572 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 283 transitions, 1164 flow [2022-11-21 16:32:23,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 16:32:23,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-21 16:32:23,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1753 transitions. [2022-11-21 16:32:23,577 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7773835920177383 [2022-11-21 16:32:23,577 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1753 transitions. [2022-11-21 16:32:23,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1753 transitions. [2022-11-21 16:32:23,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:32:23,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1753 transitions. [2022-11-21 16:32:23,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 159.36363636363637) internal successors, (1753), 11 states have internal predecessors, (1753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:23,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 205.0) internal successors, (2460), 12 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:23,588 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 205.0) internal successors, (2460), 12 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:23,589 INFO L175 Difference]: Start difference. First operand has 200 places, 210 transitions, 652 flow. Second operand 11 states and 1753 transitions. [2022-11-21 16:32:23,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 283 transitions, 1164 flow [2022-11-21 16:32:23,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 283 transitions, 1162 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 16:32:23,752 INFO L231 Difference]: Finished difference. Result has 212 places, 217 transitions, 741 flow [2022-11-21 16:32:23,753 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=741, PETRI_PLACES=212, PETRI_TRANSITIONS=217} [2022-11-21 16:32:23,753 INFO L288 CegarLoopForPetriNet]: 176 programPoint places, 36 predicate places. [2022-11-21 16:32:23,754 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 217 transitions, 741 flow [2022-11-21 16:32:23,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 152.57142857142858) internal successors, (1068), 7 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:23,754 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:32:23,755 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:32:23,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc47cfe6-7f24-4225-ab88-5848dd05e86d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 16:32:23,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc47cfe6-7f24-4225-ab88-5848dd05e86d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-21 16:32:23,961 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-21 16:32:23,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:32:23,961 INFO L85 PathProgramCache]: Analyzing trace with hash -47790388, now seen corresponding path program 1 times [2022-11-21 16:32:23,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:32:23,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539783963] [2022-11-21 16:32:23,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:32:23,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:32:24,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:32:24,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:32:24,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:32:24,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539783963] [2022-11-21 16:32:24,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539783963] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:32:24,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:32:24,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:32:24,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212046697] [2022-11-21 16:32:24,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:32:24,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:32:24,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:32:24,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:32:24,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:32:24,096 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 205 [2022-11-21 16:32:24,097 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 217 transitions, 741 flow. Second operand has 4 states, 4 states have (on average 177.25) internal successors, (709), 4 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:24,097 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:32:24,097 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 205 [2022-11-21 16:32:24,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:32:25,909 INFO L130 PetriNetUnfolder]: 3706/9078 cut-off events. [2022-11-21 16:32:25,909 INFO L131 PetriNetUnfolder]: For 2209/2209 co-relation queries the response was YES. [2022-11-21 16:32:25,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16212 conditions, 9078 events. 3706/9078 cut-off events. For 2209/2209 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 93009 event pairs, 1813 based on Foata normal form. 0/7506 useless extension candidates. Maximal degree in co-relation 12574. Up to 3608 conditions per place. [2022-11-21 16:32:26,013 INFO L137 encePairwiseOnDemand]: 199/205 looper letters, 32 selfloop transitions, 4 changer transitions 0/235 dead transitions. [2022-11-21 16:32:26,013 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 235 transitions, 855 flow [2022-11-21 16:32:26,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:32:26,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:32:26,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 913 transitions. [2022-11-21 16:32:26,016 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8907317073170732 [2022-11-21 16:32:26,016 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 913 transitions. [2022-11-21 16:32:26,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 913 transitions. [2022-11-21 16:32:26,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:32:26,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 913 transitions. [2022-11-21 16:32:26,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 182.6) internal successors, (913), 5 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:26,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:26,033 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:26,041 INFO L175 Difference]: Start difference. First operand has 212 places, 217 transitions, 741 flow. Second operand 5 states and 913 transitions. [2022-11-21 16:32:26,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 235 transitions, 855 flow [2022-11-21 16:32:26,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 235 transitions, 850 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 16:32:26,050 INFO L231 Difference]: Finished difference. Result has 217 places, 220 transitions, 766 flow [2022-11-21 16:32:26,051 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=736, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=766, PETRI_PLACES=217, PETRI_TRANSITIONS=220} [2022-11-21 16:32:26,054 INFO L288 CegarLoopForPetriNet]: 176 programPoint places, 41 predicate places. [2022-11-21 16:32:26,054 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 220 transitions, 766 flow [2022-11-21 16:32:26,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 177.25) internal successors, (709), 4 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:26,056 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:32:26,057 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:32:26,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 16:32:26,057 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-21 16:32:26,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:32:26,058 INFO L85 PathProgramCache]: Analyzing trace with hash 2125154451, now seen corresponding path program 1 times [2022-11-21 16:32:26,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:32:26,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235471599] [2022-11-21 16:32:26,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:32:26,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:32:26,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:32:26,284 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 16:32:26,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:32:26,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235471599] [2022-11-21 16:32:26,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235471599] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:32:26,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:32:26,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 16:32:26,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255862461] [2022-11-21 16:32:26,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:32:26,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 16:32:26,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:32:26,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 16:32:26,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:32:26,288 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 205 [2022-11-21 16:32:26,289 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 220 transitions, 766 flow. Second operand has 7 states, 7 states have (on average 152.85714285714286) internal successors, (1070), 7 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:26,290 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:32:26,290 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 205 [2022-11-21 16:32:26,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:32:31,192 INFO L130 PetriNetUnfolder]: 8718/20691 cut-off events. [2022-11-21 16:32:31,193 INFO L131 PetriNetUnfolder]: For 8099/8267 co-relation queries the response was YES. [2022-11-21 16:32:31,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42746 conditions, 20691 events. 8718/20691 cut-off events. For 8099/8267 co-relation queries the response was YES. Maximal size of possible extension queue 713. Compared 221259 event pairs, 7760 based on Foata normal form. 168/17878 useless extension candidates. Maximal degree in co-relation 26335. Up to 12466 conditions per place. [2022-11-21 16:32:31,431 INFO L137 encePairwiseOnDemand]: 191/205 looper letters, 111 selfloop transitions, 23 changer transitions 4/280 dead transitions. [2022-11-21 16:32:31,431 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 280 transitions, 1231 flow [2022-11-21 16:32:31,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 16:32:31,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-21 16:32:31,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1745 transitions. [2022-11-21 16:32:31,437 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7738359201773836 [2022-11-21 16:32:31,437 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1745 transitions. [2022-11-21 16:32:31,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1745 transitions. [2022-11-21 16:32:31,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:32:31,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1745 transitions. [2022-11-21 16:32:31,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 158.63636363636363) internal successors, (1745), 11 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:31,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 205.0) internal successors, (2460), 12 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:31,448 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 205.0) internal successors, (2460), 12 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:31,449 INFO L175 Difference]: Start difference. First operand has 217 places, 220 transitions, 766 flow. Second operand 11 states and 1745 transitions. [2022-11-21 16:32:31,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 280 transitions, 1231 flow [2022-11-21 16:32:31,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 280 transitions, 1229 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 16:32:31,559 INFO L231 Difference]: Finished difference. Result has 228 places, 222 transitions, 826 flow [2022-11-21 16:32:31,560 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=764, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=826, PETRI_PLACES=228, PETRI_TRANSITIONS=222} [2022-11-21 16:32:31,560 INFO L288 CegarLoopForPetriNet]: 176 programPoint places, 52 predicate places. [2022-11-21 16:32:31,560 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 222 transitions, 826 flow [2022-11-21 16:32:31,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 152.85714285714286) internal successors, (1070), 7 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:31,561 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:32:31,561 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:32:31,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 16:32:31,562 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-21 16:32:31,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:32:31,563 INFO L85 PathProgramCache]: Analyzing trace with hash -916502517, now seen corresponding path program 1 times [2022-11-21 16:32:31,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:32:31,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184308096] [2022-11-21 16:32:31,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:32:31,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:32:31,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:32:31,742 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:32:31,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:32:31,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184308096] [2022-11-21 16:32:31,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184308096] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:32:31,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615051636] [2022-11-21 16:32:31,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:32:31,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:32:31,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc47cfe6-7f24-4225-ab88-5848dd05e86d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:32:31,745 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc47cfe6-7f24-4225-ab88-5848dd05e86d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:32:31,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc47cfe6-7f24-4225-ab88-5848dd05e86d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 16:32:31,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:32:31,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 16:32:31,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:32:32,060 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-21 16:32:32,060 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:32:32,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615051636] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:32:32,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:32:32,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-11-21 16:32:32,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033077576] [2022-11-21 16:32:32,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:32:32,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 16:32:32,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:32:32,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 16:32:32,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-21 16:32:32,064 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 205 [2022-11-21 16:32:32,066 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 222 transitions, 826 flow. Second operand has 7 states, 7 states have (on average 153.0) internal successors, (1071), 7 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:32,066 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:32:32,066 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 205 [2022-11-21 16:32:32,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:32:35,886 INFO L130 PetriNetUnfolder]: 8678/20445 cut-off events. [2022-11-21 16:32:35,886 INFO L131 PetriNetUnfolder]: For 11579/11705 co-relation queries the response was YES. [2022-11-21 16:32:36,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43473 conditions, 20445 events. 8678/20445 cut-off events. For 11579/11705 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 215810 event pairs, 7519 based on Foata normal form. 126/18461 useless extension candidates. Maximal degree in co-relation 24788. Up to 12214 conditions per place. [2022-11-21 16:32:36,126 INFO L137 encePairwiseOnDemand]: 191/205 looper letters, 61 selfloop transitions, 15 changer transitions 58/274 dead transitions. [2022-11-21 16:32:36,127 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 274 transitions, 1257 flow [2022-11-21 16:32:36,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 16:32:36,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-21 16:32:36,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1737 transitions. [2022-11-21 16:32:36,136 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7702882483370288 [2022-11-21 16:32:36,136 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1737 transitions. [2022-11-21 16:32:36,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1737 transitions. [2022-11-21 16:32:36,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:32:36,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1737 transitions. [2022-11-21 16:32:36,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 157.9090909090909) internal successors, (1737), 11 states have internal predecessors, (1737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:36,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 205.0) internal successors, (2460), 12 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:36,152 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 205.0) internal successors, (2460), 12 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:36,152 INFO L175 Difference]: Start difference. First operand has 228 places, 222 transitions, 826 flow. Second operand 11 states and 1737 transitions. [2022-11-21 16:32:36,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 274 transitions, 1257 flow [2022-11-21 16:32:36,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 274 transitions, 1235 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-21 16:32:36,264 INFO L231 Difference]: Finished difference. Result has 237 places, 212 transitions, 768 flow [2022-11-21 16:32:36,265 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=804, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=768, PETRI_PLACES=237, PETRI_TRANSITIONS=212} [2022-11-21 16:32:36,266 INFO L288 CegarLoopForPetriNet]: 176 programPoint places, 61 predicate places. [2022-11-21 16:32:36,266 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 212 transitions, 768 flow [2022-11-21 16:32:36,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 153.0) internal successors, (1071), 7 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:36,267 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:32:36,267 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:32:36,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc47cfe6-7f24-4225-ab88-5848dd05e86d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-21 16:32:36,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc47cfe6-7f24-4225-ab88-5848dd05e86d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:32:36,474 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-21 16:32:36,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:32:36,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1952035865, now seen corresponding path program 1 times [2022-11-21 16:32:36,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:32:36,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320532288] [2022-11-21 16:32:36,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:32:36,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:32:36,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:32:36,656 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:32:36,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:32:36,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320532288] [2022-11-21 16:32:36,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320532288] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:32:36,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938138725] [2022-11-21 16:32:36,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:32:36,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:32:36,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc47cfe6-7f24-4225-ab88-5848dd05e86d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:32:36,659 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc47cfe6-7f24-4225-ab88-5848dd05e86d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:32:36,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc47cfe6-7f24-4225-ab88-5848dd05e86d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-21 16:32:36,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:32:36,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-21 16:32:36,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:32:37,259 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:32:37,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:32:37,620 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:32:37,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938138725] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:32:37,620 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:32:37,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 23 [2022-11-21 16:32:37,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068304691] [2022-11-21 16:32:37,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:32:37,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-21 16:32:37,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:32:37,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-21 16:32:37,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2022-11-21 16:32:37,629 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 205 [2022-11-21 16:32:37,632 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 212 transitions, 768 flow. Second operand has 23 states, 23 states have (on average 138.8695652173913) internal successors, (3194), 23 states have internal predecessors, (3194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:37,632 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:32:37,632 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 205 [2022-11-21 16:32:37,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:32:47,438 INFO L130 PetriNetUnfolder]: 22426/48566 cut-off events. [2022-11-21 16:32:47,438 INFO L131 PetriNetUnfolder]: For 30528/30703 co-relation queries the response was YES. [2022-11-21 16:32:47,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113642 conditions, 48566 events. 22426/48566 cut-off events. For 30528/30703 co-relation queries the response was YES. Maximal size of possible extension queue 1492. Compared 546529 event pairs, 6085 based on Foata normal form. 662/47613 useless extension candidates. Maximal degree in co-relation 72939. Up to 7023 conditions per place. [2022-11-21 16:32:48,006 INFO L137 encePairwiseOnDemand]: 179/205 looper letters, 298 selfloop transitions, 62 changer transitions 0/476 dead transitions. [2022-11-21 16:32:48,006 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 476 transitions, 2428 flow [2022-11-21 16:32:48,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-21 16:32:48,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-21 16:32:48,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 4879 transitions. [2022-11-21 16:32:48,015 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7 [2022-11-21 16:32:48,016 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 4879 transitions. [2022-11-21 16:32:48,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 4879 transitions. [2022-11-21 16:32:48,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:32:48,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 4879 transitions. [2022-11-21 16:32:48,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 143.5) internal successors, (4879), 34 states have internal predecessors, (4879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:48,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 205.0) internal successors, (7175), 35 states have internal predecessors, (7175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:48,043 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 205.0) internal successors, (7175), 35 states have internal predecessors, (7175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:48,044 INFO L175 Difference]: Start difference. First operand has 237 places, 212 transitions, 768 flow. Second operand 34 states and 4879 transitions. [2022-11-21 16:32:48,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 476 transitions, 2428 flow [2022-11-21 16:32:48,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 476 transitions, 2107 flow, removed 100 selfloop flow, removed 18 redundant places. [2022-11-21 16:32:48,380 INFO L231 Difference]: Finished difference. Result has 246 places, 245 transitions, 1007 flow [2022-11-21 16:32:48,381 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=1007, PETRI_PLACES=246, PETRI_TRANSITIONS=245} [2022-11-21 16:32:48,382 INFO L288 CegarLoopForPetriNet]: 176 programPoint places, 70 predicate places. [2022-11-21 16:32:48,382 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 245 transitions, 1007 flow [2022-11-21 16:32:48,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 138.8695652173913) internal successors, (3194), 23 states have internal predecessors, (3194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:48,383 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:32:48,383 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:32:48,388 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc47cfe6-7f24-4225-ab88-5848dd05e86d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-21 16:32:48,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc47cfe6-7f24-4225-ab88-5848dd05e86d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:32:48,584 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-21 16:32:48,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:32:48,585 INFO L85 PathProgramCache]: Analyzing trace with hash -89107232, now seen corresponding path program 1 times [2022-11-21 16:32:48,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:32:48,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095828031] [2022-11-21 16:32:48,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:32:48,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:32:48,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:32:49,065 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:32:49,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:32:49,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095828031] [2022-11-21 16:32:49,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095828031] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:32:49,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116746471] [2022-11-21 16:32:49,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:32:49,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:32:49,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc47cfe6-7f24-4225-ab88-5848dd05e86d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:32:49,071 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc47cfe6-7f24-4225-ab88-5848dd05e86d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:32:49,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc47cfe6-7f24-4225-ab88-5848dd05e86d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-21 16:32:49,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:32:49,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-21 16:32:49,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:32:49,444 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:32:49,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:32:49,761 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:32:49,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116746471] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:32:49,762 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:32:49,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-11-21 16:32:49,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965709893] [2022-11-21 16:32:49,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:32:49,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-21 16:32:49,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:32:49,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-21 16:32:49,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=434, Unknown=0, NotChecked=0, Total=552 [2022-11-21 16:32:49,769 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 205 [2022-11-21 16:32:49,772 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 245 transitions, 1007 flow. Second operand has 24 states, 24 states have (on average 137.75) internal successors, (3306), 24 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:49,772 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:32:49,772 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 205 [2022-11-21 16:32:49,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:32:57,468 INFO L130 PetriNetUnfolder]: 20534/40641 cut-off events. [2022-11-21 16:32:57,469 INFO L131 PetriNetUnfolder]: For 19602/22240 co-relation queries the response was YES. [2022-11-21 16:32:58,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95548 conditions, 40641 events. 20534/40641 cut-off events. For 19602/22240 co-relation queries the response was YES. Maximal size of possible extension queue 1610. Compared 439987 event pairs, 13656 based on Foata normal form. 2638/37100 useless extension candidates. Maximal degree in co-relation 74225. Up to 20348 conditions per place. [2022-11-21 16:32:58,195 INFO L137 encePairwiseOnDemand]: 181/205 looper letters, 221 selfloop transitions, 58 changer transitions 12/419 dead transitions. [2022-11-21 16:32:58,195 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 419 transitions, 2183 flow [2022-11-21 16:32:58,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-21 16:32:58,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-21 16:32:58,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3986 transitions. [2022-11-21 16:32:58,205 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.694425087108014 [2022-11-21 16:32:58,205 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3986 transitions. [2022-11-21 16:32:58,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3986 transitions. [2022-11-21 16:32:58,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:32:58,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3986 transitions. [2022-11-21 16:32:58,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 142.35714285714286) internal successors, (3986), 28 states have internal predecessors, (3986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:58,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 205.0) internal successors, (5945), 29 states have internal predecessors, (5945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:58,230 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 205.0) internal successors, (5945), 29 states have internal predecessors, (5945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:58,230 INFO L175 Difference]: Start difference. First operand has 246 places, 245 transitions, 1007 flow. Second operand 28 states and 3986 transitions. [2022-11-21 16:32:58,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 419 transitions, 2183 flow [2022-11-21 16:32:58,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 419 transitions, 2134 flow, removed 4 selfloop flow, removed 8 redundant places. [2022-11-21 16:32:58,473 INFO L231 Difference]: Finished difference. Result has 268 places, 258 transitions, 1158 flow [2022-11-21 16:32:58,473 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=958, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1158, PETRI_PLACES=268, PETRI_TRANSITIONS=258} [2022-11-21 16:32:58,474 INFO L288 CegarLoopForPetriNet]: 176 programPoint places, 92 predicate places. [2022-11-21 16:32:58,474 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 258 transitions, 1158 flow [2022-11-21 16:32:58,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 137.75) internal successors, (3306), 24 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:58,475 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:32:58,476 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:32:58,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc47cfe6-7f24-4225-ab88-5848dd05e86d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-21 16:32:58,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc47cfe6-7f24-4225-ab88-5848dd05e86d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:32:58,682 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-21 16:32:58,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:32:58,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1043183448, now seen corresponding path program 1 times [2022-11-21 16:32:58,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:32:58,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888326456] [2022-11-21 16:32:58,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:32:58,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:32:58,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:32:58,850 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:32:58,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:32:58,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888326456] [2022-11-21 16:32:58,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888326456] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:32:58,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110873630] [2022-11-21 16:32:58,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:32:58,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:32:58,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc47cfe6-7f24-4225-ab88-5848dd05e86d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:32:58,856 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc47cfe6-7f24-4225-ab88-5848dd05e86d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:32:58,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc47cfe6-7f24-4225-ab88-5848dd05e86d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-21 16:32:58,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:32:58,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-21 16:32:58,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:32:59,308 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:32:59,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:32:59,728 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:32:59,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110873630] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:32:59,729 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:32:59,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 23 [2022-11-21 16:32:59,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771773210] [2022-11-21 16:32:59,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:32:59,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-21 16:32:59,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:32:59,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-21 16:32:59,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2022-11-21 16:32:59,736 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 205 [2022-11-21 16:32:59,740 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 258 transitions, 1158 flow. Second operand has 23 states, 23 states have (on average 139.2608695652174) internal successors, (3203), 23 states have internal predecessors, (3203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:59,740 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:32:59,740 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 205 [2022-11-21 16:32:59,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:10,259 INFO L130 PetriNetUnfolder]: 25604/50160 cut-off events. [2022-11-21 16:33:10,259 INFO L131 PetriNetUnfolder]: For 38814/48358 co-relation queries the response was YES. [2022-11-21 16:33:10,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125730 conditions, 50160 events. 25604/50160 cut-off events. For 38814/48358 co-relation queries the response was YES. Maximal size of possible extension queue 2015. Compared 546569 event pairs, 6564 based on Foata normal form. 4414/51083 useless extension candidates. Maximal degree in co-relation 103919. Up to 11028 conditions per place. [2022-11-21 16:33:10,777 INFO L137 encePairwiseOnDemand]: 179/205 looper letters, 164 selfloop transitions, 43 changer transitions 193/520 dead transitions. [2022-11-21 16:33:10,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 520 transitions, 2937 flow [2022-11-21 16:33:10,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-21 16:33:10,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-21 16:33:10,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 4857 transitions. [2022-11-21 16:33:10,785 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6968436154949785 [2022-11-21 16:33:10,786 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 4857 transitions. [2022-11-21 16:33:10,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 4857 transitions. [2022-11-21 16:33:10,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:10,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 4857 transitions. [2022-11-21 16:33:10,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 142.85294117647058) internal successors, (4857), 34 states have internal predecessors, (4857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:10,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 205.0) internal successors, (7175), 35 states have internal predecessors, (7175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:10,809 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 205.0) internal successors, (7175), 35 states have internal predecessors, (7175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:10,810 INFO L175 Difference]: Start difference. First operand has 268 places, 258 transitions, 1158 flow. Second operand 34 states and 4857 transitions. [2022-11-21 16:33:10,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 520 transitions, 2937 flow [2022-11-21 16:33:10,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 520 transitions, 2862 flow, removed 6 selfloop flow, removed 13 redundant places. [2022-11-21 16:33:10,972 INFO L231 Difference]: Finished difference. Result has 294 places, 225 transitions, 990 flow [2022-11-21 16:33:10,973 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=1083, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=990, PETRI_PLACES=294, PETRI_TRANSITIONS=225} [2022-11-21 16:33:10,973 INFO L288 CegarLoopForPetriNet]: 176 programPoint places, 118 predicate places. [2022-11-21 16:33:10,973 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 225 transitions, 990 flow [2022-11-21 16:33:10,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 139.2608695652174) internal successors, (3203), 23 states have internal predecessors, (3203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:10,974 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:10,975 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:33:10,980 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc47cfe6-7f24-4225-ab88-5848dd05e86d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-21 16:33:11,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc47cfe6-7f24-4225-ab88-5848dd05e86d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:33:11,175 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-21 16:33:11,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:11,176 INFO L85 PathProgramCache]: Analyzing trace with hash 224088796, now seen corresponding path program 1 times [2022-11-21 16:33:11,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:11,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968682125] [2022-11-21 16:33:11,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:11,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:11,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:11,301 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-21 16:33:11,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:11,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968682125] [2022-11-21 16:33:11,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968682125] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:33:11,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899152827] [2022-11-21 16:33:11,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:11,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:33:11,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc47cfe6-7f24-4225-ab88-5848dd05e86d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:33:11,304 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc47cfe6-7f24-4225-ab88-5848dd05e86d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:33:11,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc47cfe6-7f24-4225-ab88-5848dd05e86d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-21 16:33:11,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:11,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:33:11,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:33:11,476 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-21 16:33:11,476 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:33:11,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899152827] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:11,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:33:11,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 16:33:11,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461032674] [2022-11-21 16:33:11,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:11,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:33:11,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:11,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:33:11,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:33:11,480 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 205 [2022-11-21 16:33:11,481 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 225 transitions, 990 flow. Second operand has 6 states, 6 states have (on average 177.33333333333334) internal successors, (1064), 6 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:11,481 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:11,481 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 205 [2022-11-21 16:33:11,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:13,405 INFO L130 PetriNetUnfolder]: 3391/8275 cut-off events. [2022-11-21 16:33:13,405 INFO L131 PetriNetUnfolder]: For 2952/2952 co-relation queries the response was YES. [2022-11-21 16:33:13,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18541 conditions, 8275 events. 3391/8275 cut-off events. For 2952/2952 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 80404 event pairs, 40 based on Foata normal form. 160/8125 useless extension candidates. Maximal degree in co-relation 18185. Up to 2070 conditions per place.