./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-lamport.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671baf0-e6c0-4f0b-b41e-5e39e505e350/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671baf0-e6c0-4f0b-b41e-5e39e505e350/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671baf0-e6c0-4f0b-b41e-5e39e505e350/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671baf0-e6c0-4f0b-b41e-5e39e505e350/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-lamport.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671baf0-e6c0-4f0b-b41e-5e39e505e350/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671baf0-e6c0-4f0b-b41e-5e39e505e350/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dda4e60b50ccb96ce521fa11aa956967863397082d82b1fb589f74967fe28a7c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 10:55:25,607 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:55:25,608 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:55:25,625 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:55:25,625 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:55:25,626 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:55:25,628 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:55:25,629 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:55:25,631 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:55:25,632 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:55:25,633 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:55:25,634 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:55:25,634 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:55:25,635 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:55:25,636 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:55:25,637 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:55:25,638 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:55:25,639 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:55:25,641 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:55:25,642 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:55:25,644 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:55:25,645 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:55:25,646 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:55:25,647 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:55:25,650 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:55:25,650 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:55:25,651 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:55:25,651 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:55:25,652 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:55:25,653 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:55:25,653 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:55:25,654 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:55:25,655 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:55:25,655 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:55:25,656 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:55:25,657 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:55:25,657 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:55:25,658 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:55:25,658 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:55:25,665 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:55:25,665 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:55:25,667 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671baf0-e6c0-4f0b-b41e-5e39e505e350/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 10:55:25,701 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:55:25,702 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:55:25,702 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:55:25,702 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:55:25,703 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:55:25,703 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:55:25,704 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:55:25,704 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:55:25,704 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:55:25,705 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:55:25,705 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:55:25,705 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 10:55:25,705 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:55:25,706 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:55:25,706 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:55:25,710 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:55:25,710 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:55:25,711 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:55:25,711 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 10:55:25,711 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:55:25,711 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:55:25,712 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:55:25,712 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:55:25,712 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:55:25,713 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:55:25,713 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:55:25,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:55:25,713 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:55:25,714 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:55:25,714 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:55:25,715 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:55:25,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:55:25,715 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:55:25,716 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:55:25,716 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:55:25,716 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_9671baf0-e6c0-4f0b-b41e-5e39e505e350/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671baf0-e6c0-4f0b-b41e-5e39e505e350/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dda4e60b50ccb96ce521fa11aa956967863397082d82b1fb589f74967fe28a7c [2022-11-20 10:55:26,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:55:26,120 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:55:26,122 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:55:26,123 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:55:26,126 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:55:26,128 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671baf0-e6c0-4f0b-b41e-5e39e505e350/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/parallel-lamport.wvr.c [2022-11-20 10:55:29,049 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:55:29,259 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:55:29,260 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671baf0-e6c0-4f0b-b41e-5e39e505e350/sv-benchmarks/c/weaver/parallel-lamport.wvr.c [2022-11-20 10:55:29,268 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671baf0-e6c0-4f0b-b41e-5e39e505e350/bin/uautomizer-ug76WZFUDN/data/8884b7221/77b5aa4f92b5411b807b617c5cd41735/FLAG083ea36ac [2022-11-20 10:55:29,283 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671baf0-e6c0-4f0b-b41e-5e39e505e350/bin/uautomizer-ug76WZFUDN/data/8884b7221/77b5aa4f92b5411b807b617c5cd41735 [2022-11-20 10:55:29,286 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:55:29,288 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:55:29,289 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:55:29,290 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:55:29,294 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:55:29,295 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:55:29" (1/1) ... [2022-11-20 10:55:29,296 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e4cc3a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:29, skipping insertion in model container [2022-11-20 10:55:29,296 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:55:29" (1/1) ... [2022-11-20 10:55:29,304 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:55:29,324 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:55:29,548 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_9671baf0-e6c0-4f0b-b41e-5e39e505e350/sv-benchmarks/c/weaver/parallel-lamport.wvr.c[4210,4223] [2022-11-20 10:55:29,557 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:55:29,567 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:55:29,599 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_9671baf0-e6c0-4f0b-b41e-5e39e505e350/sv-benchmarks/c/weaver/parallel-lamport.wvr.c[4210,4223] [2022-11-20 10:55:29,604 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:55:29,619 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:55:29,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:29 WrapperNode [2022-11-20 10:55:29,619 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:55:29,620 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:55:29,620 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:55:29,620 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:55:29,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:29" (1/1) ... [2022-11-20 10:55:29,634 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:29" (1/1) ... [2022-11-20 10:55:29,666 INFO L138 Inliner]: procedures = 25, calls = 89, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 241 [2022-11-20 10:55:29,666 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:55:29,667 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:55:29,667 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:55:29,667 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:55:29,677 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:29" (1/1) ... [2022-11-20 10:55:29,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:29" (1/1) ... [2022-11-20 10:55:29,680 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:29" (1/1) ... [2022-11-20 10:55:29,681 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:29" (1/1) ... [2022-11-20 10:55:29,689 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:29" (1/1) ... [2022-11-20 10:55:29,693 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:29" (1/1) ... [2022-11-20 10:55:29,695 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:29" (1/1) ... [2022-11-20 10:55:29,696 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:29" (1/1) ... [2022-11-20 10:55:29,699 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:55:29,700 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:55:29,701 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:55:29,701 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:55:29,711 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:29" (1/1) ... [2022-11-20 10:55:29,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:55:29,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671baf0-e6c0-4f0b-b41e-5e39e505e350/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:55:29,749 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671baf0-e6c0-4f0b-b41e-5e39e505e350/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:55:29,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671baf0-e6c0-4f0b-b41e-5e39e505e350/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:55:29,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:55:29,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:55:29,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 10:55:29,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 10:55:29,787 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 10:55:29,787 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 10:55:29,787 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 10:55:29,788 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 10:55:29,788 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 10:55:29,788 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 10:55:29,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:55:29,789 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 10:55:29,789 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 10:55:29,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 10:55:29,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:55:29,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:55:29,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:55:29,791 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 10:55:29,903 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:55:29,905 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:55:30,429 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:55:30,579 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:55:30,580 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 10:55:30,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:55:30 BoogieIcfgContainer [2022-11-20 10:55:30,583 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:55:30,586 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:55:30,586 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:55:30,590 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:55:30,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:55:29" (1/3) ... [2022-11-20 10:55:30,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@449a09d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:55:30, skipping insertion in model container [2022-11-20 10:55:30,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:29" (2/3) ... [2022-11-20 10:55:30,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@449a09d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:55:30, skipping insertion in model container [2022-11-20 10:55:30,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:55:30" (3/3) ... [2022-11-20 10:55:30,593 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-lamport.wvr.c [2022-11-20 10:55:30,603 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 10:55:30,614 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:55:30,615 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-20 10:55:30,615 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 10:55:30,750 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 10:55:30,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 196 places, 193 transitions, 410 flow [2022-11-20 10:55:30,894 INFO L130 PetriNetUnfolder]: 7/190 cut-off events. [2022-11-20 10:55:30,894 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 10:55:30,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 190 events. 7/190 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 126 event pairs, 0 based on Foata normal form. 0/177 useless extension candidates. Maximal degree in co-relation 158. Up to 2 conditions per place. [2022-11-20 10:55:30,899 INFO L82 GeneralOperation]: Start removeDead. Operand has 196 places, 193 transitions, 410 flow [2022-11-20 10:55:30,905 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 170 places, 166 transitions, 344 flow [2022-11-20 10:55:30,916 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:55:30,927 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;@223f7e9a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:55:30,928 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-20 10:55:30,959 INFO L130 PetriNetUnfolder]: 3/85 cut-off events. [2022-11-20 10:55:30,960 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 10:55:30,960 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:55:30,961 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] [2022-11-20 10:55:30,961 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-20 10:55:30,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:30,972 INFO L85 PathProgramCache]: Analyzing trace with hash 297638342, now seen corresponding path program 1 times [2022-11-20 10:55:30,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:30,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078226504] [2022-11-20 10:55:30,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:30,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:31,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:31,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:31,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:31,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078226504] [2022-11-20 10:55:31,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078226504] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:55:31,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:55:31,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:55:31,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634869418] [2022-11-20 10:55:31,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:55:31,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:55:31,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:31,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:55:31,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:55:31,562 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 193 [2022-11-20 10:55:31,566 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 166 transitions, 344 flow. Second operand has 4 states, 4 states have (on average 154.5) internal successors, (618), 4 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:31,567 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:55:31,567 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 193 [2022-11-20 10:55:31,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:55:32,260 INFO L130 PetriNetUnfolder]: 847/2137 cut-off events. [2022-11-20 10:55:32,261 INFO L131 PetriNetUnfolder]: For 282/282 co-relation queries the response was YES. [2022-11-20 10:55:32,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3852 conditions, 2137 events. 847/2137 cut-off events. For 282/282 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 15365 event pairs, 846 based on Foata normal form. 6/1946 useless extension candidates. Maximal degree in co-relation 1787. Up to 716 conditions per place. [2022-11-20 10:55:32,281 INFO L137 encePairwiseOnDemand]: 182/193 looper letters, 54 selfloop transitions, 4 changer transitions 4/188 dead transitions. [2022-11-20 10:55:32,282 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 188 transitions, 516 flow [2022-11-20 10:55:32,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:55:32,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:55:32,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 833 transitions. [2022-11-20 10:55:32,308 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8632124352331606 [2022-11-20 10:55:32,309 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 833 transitions. [2022-11-20 10:55:32,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 833 transitions. [2022-11-20 10:55:32,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:55:32,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 833 transitions. [2022-11-20 10:55:32,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 166.6) internal successors, (833), 5 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:32,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 193.0) internal successors, (1158), 6 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:32,372 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 193.0) internal successors, (1158), 6 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:32,375 INFO L175 Difference]: Start difference. First operand has 170 places, 166 transitions, 344 flow. Second operand 5 states and 833 transitions. [2022-11-20 10:55:32,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 188 transitions, 516 flow [2022-11-20 10:55:32,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 188 transitions, 504 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 10:55:32,385 INFO L231 Difference]: Finished difference. Result has 173 places, 160 transitions, 350 flow [2022-11-20 10:55:32,388 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=350, PETRI_PLACES=173, PETRI_TRANSITIONS=160} [2022-11-20 10:55:32,391 INFO L288 CegarLoopForPetriNet]: 170 programPoint places, 3 predicate places. [2022-11-20 10:55:32,392 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 160 transitions, 350 flow [2022-11-20 10:55:32,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 154.5) internal successors, (618), 4 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:32,393 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:55:32,393 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] [2022-11-20 10:55:32,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:55:32,394 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-20 10:55:32,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:32,395 INFO L85 PathProgramCache]: Analyzing trace with hash -2085209102, now seen corresponding path program 1 times [2022-11-20 10:55:32,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:32,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643871379] [2022-11-20 10:55:32,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:32,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:32,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:32,710 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:32,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:32,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643871379] [2022-11-20 10:55:32,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643871379] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:55:32,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184214651] [2022-11-20 10:55:32,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:32,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:55:32,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671baf0-e6c0-4f0b-b41e-5e39e505e350/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:55:32,716 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671baf0-e6c0-4f0b-b41e-5e39e505e350/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:55:32,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671baf0-e6c0-4f0b-b41e-5e39e505e350/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:55:32,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:32,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:55:32,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:55:32,970 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:32,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:55:33,054 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:33,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184214651] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:55:33,055 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:55:33,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-20 10:55:33,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370574776] [2022-11-20 10:55:33,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:55:33,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:55:33,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:33,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:55:33,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:55:33,068 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 193 [2022-11-20 10:55:33,071 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 160 transitions, 350 flow. Second operand has 12 states, 12 states have (on average 155.66666666666666) internal successors, (1868), 12 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:33,071 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:55:33,072 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 193 [2022-11-20 10:55:33,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:55:34,824 INFO L130 PetriNetUnfolder]: 2116/5223 cut-off events. [2022-11-20 10:55:34,825 INFO L131 PetriNetUnfolder]: For 151/151 co-relation queries the response was YES. [2022-11-20 10:55:34,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9378 conditions, 5223 events. 2116/5223 cut-off events. For 151/151 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 42655 event pairs, 2115 based on Foata normal form. 3/4755 useless extension candidates. Maximal degree in co-relation 7440. Up to 711 conditions per place. [2022-11-20 10:55:34,858 INFO L137 encePairwiseOnDemand]: 186/193 looper letters, 123 selfloop transitions, 18 changer transitions 0/267 dead transitions. [2022-11-20 10:55:34,858 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 267 transitions, 892 flow [2022-11-20 10:55:34,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 10:55:34,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 10:55:34,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2898 transitions. [2022-11-20 10:55:34,866 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8341968911917098 [2022-11-20 10:55:34,867 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2898 transitions. [2022-11-20 10:55:34,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2898 transitions. [2022-11-20 10:55:34,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:55:34,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2898 transitions. [2022-11-20 10:55:34,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 161.0) internal successors, (2898), 18 states have internal predecessors, (2898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:34,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 193.0) internal successors, (3667), 19 states have internal predecessors, (3667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:34,888 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 193.0) internal successors, (3667), 19 states have internal predecessors, (3667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:34,888 INFO L175 Difference]: Start difference. First operand has 173 places, 160 transitions, 350 flow. Second operand 18 states and 2898 transitions. [2022-11-20 10:55:34,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 267 transitions, 892 flow [2022-11-20 10:55:34,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 267 transitions, 890 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:55:34,899 INFO L231 Difference]: Finished difference. Result has 189 places, 172 transitions, 454 flow [2022-11-20 10:55:34,899 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=454, PETRI_PLACES=189, PETRI_TRANSITIONS=172} [2022-11-20 10:55:34,900 INFO L288 CegarLoopForPetriNet]: 170 programPoint places, 19 predicate places. [2022-11-20 10:55:34,900 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 172 transitions, 454 flow [2022-11-20 10:55:34,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 155.66666666666666) internal successors, (1868), 12 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:34,902 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:55:34,902 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:55:34,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671baf0-e6c0-4f0b-b41e-5e39e505e350/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 10:55:35,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671baf0-e6c0-4f0b-b41e-5e39e505e350/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:55:35,108 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-20 10:55:35,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:35,109 INFO L85 PathProgramCache]: Analyzing trace with hash -216972190, now seen corresponding path program 1 times [2022-11-20 10:55:35,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:35,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507924388] [2022-11-20 10:55:35,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:35,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:35,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:35,351 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:35,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:35,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507924388] [2022-11-20 10:55:35,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507924388] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:55:35,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83034624] [2022-11-20 10:55:35,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:35,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:55:35,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671baf0-e6c0-4f0b-b41e-5e39e505e350/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:55:35,355 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671baf0-e6c0-4f0b-b41e-5e39e505e350/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:55:35,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671baf0-e6c0-4f0b-b41e-5e39e505e350/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 10:55:35,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:35,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:55:35,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:55:35,517 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:35,518 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:55:35,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83034624] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:55:35,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:55:35,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 10:55:35,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69738487] [2022-11-20 10:55:35,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:55:35,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:55:35,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:35,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:55:35,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:55:35,523 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 193 [2022-11-20 10:55:35,525 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 172 transitions, 454 flow. Second operand has 6 states, 6 states have (on average 155.33333333333334) internal successors, (932), 6 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:35,525 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:55:35,525 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 193 [2022-11-20 10:55:35,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:55:36,806 INFO L130 PetriNetUnfolder]: 2116/5219 cut-off events. [2022-11-20 10:55:36,807 INFO L131 PetriNetUnfolder]: For 187/187 co-relation queries the response was YES. [2022-11-20 10:55:36,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9396 conditions, 5219 events. 2116/5219 cut-off events. For 187/187 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 42591 event pairs, 2115 based on Foata normal form. 4/4752 useless extension candidates. Maximal degree in co-relation 7505. Up to 2828 conditions per place. [2022-11-20 10:55:36,835 INFO L137 encePairwiseOnDemand]: 188/193 looper letters, 55 selfloop transitions, 11 changer transitions 0/192 dead transitions. [2022-11-20 10:55:36,836 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 192 transitions, 615 flow [2022-11-20 10:55:36,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:55:36,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 10:55:36,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1129 transitions. [2022-11-20 10:55:36,840 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8356772760917839 [2022-11-20 10:55:36,840 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1129 transitions. [2022-11-20 10:55:36,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1129 transitions. [2022-11-20 10:55:36,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:55:36,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1129 transitions. [2022-11-20 10:55:36,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 161.28571428571428) internal successors, (1129), 7 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:36,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 193.0) internal successors, (1544), 8 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:36,848 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 193.0) internal successors, (1544), 8 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:36,848 INFO L175 Difference]: Start difference. First operand has 189 places, 172 transitions, 454 flow. Second operand 7 states and 1129 transitions. [2022-11-20 10:55:36,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 192 transitions, 615 flow [2022-11-20 10:55:36,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 192 transitions, 583 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-20 10:55:36,859 INFO L231 Difference]: Finished difference. Result has 185 places, 168 transitions, 417 flow [2022-11-20 10:55:36,859 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=417, PETRI_PLACES=185, PETRI_TRANSITIONS=168} [2022-11-20 10:55:36,862 INFO L288 CegarLoopForPetriNet]: 170 programPoint places, 15 predicate places. [2022-11-20 10:55:36,862 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 168 transitions, 417 flow [2022-11-20 10:55:36,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 155.33333333333334) internal successors, (932), 6 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:36,863 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:55:36,863 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] [2022-11-20 10:55:36,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671baf0-e6c0-4f0b-b41e-5e39e505e350/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 10:55:37,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671baf0-e6c0-4f0b-b41e-5e39e505e350/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:55:37,071 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-20 10:55:37,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:37,071 INFO L85 PathProgramCache]: Analyzing trace with hash -872252023, now seen corresponding path program 1 times [2022-11-20 10:55:37,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:37,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190322613] [2022-11-20 10:55:37,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:37,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:37,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:37,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:37,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:37,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190322613] [2022-11-20 10:55:37,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190322613] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:55:37,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:55:37,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:55:37,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894959360] [2022-11-20 10:55:37,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:55:37,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:55:37,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:37,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:55:37,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:55:37,188 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 193 [2022-11-20 10:55:37,193 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 168 transitions, 417 flow. Second operand has 4 states, 4 states have (on average 159.75) internal successors, (639), 4 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:37,193 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:55:37,193 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 193 [2022-11-20 10:55:37,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:55:39,301 INFO L130 PetriNetUnfolder]: 4441/10264 cut-off events. [2022-11-20 10:55:39,302 INFO L131 PetriNetUnfolder]: For 302/302 co-relation queries the response was YES. [2022-11-20 10:55:39,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18791 conditions, 10264 events. 4441/10264 cut-off events. For 302/302 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 90503 event pairs, 3050 based on Foata normal form. 0/9599 useless extension candidates. Maximal degree in co-relation 15028. Up to 3081 conditions per place. [2022-11-20 10:55:39,360 INFO L137 encePairwiseOnDemand]: 185/193 looper letters, 33 selfloop transitions, 6 changer transitions 28/209 dead transitions. [2022-11-20 10:55:39,360 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 209 transitions, 644 flow [2022-11-20 10:55:39,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:55:39,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:55:39,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 861 transitions. [2022-11-20 10:55:39,363 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8922279792746114 [2022-11-20 10:55:39,364 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 861 transitions. [2022-11-20 10:55:39,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 861 transitions. [2022-11-20 10:55:39,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:55:39,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 861 transitions. [2022-11-20 10:55:39,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 172.2) internal successors, (861), 5 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:39,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 193.0) internal successors, (1158), 6 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:39,369 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 193.0) internal successors, (1158), 6 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:39,370 INFO L175 Difference]: Start difference. First operand has 185 places, 168 transitions, 417 flow. Second operand 5 states and 861 transitions. [2022-11-20 10:55:39,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 209 transitions, 644 flow [2022-11-20 10:55:39,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 209 transitions, 630 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 10:55:39,378 INFO L231 Difference]: Finished difference. Result has 187 places, 169 transitions, 436 flow [2022-11-20 10:55:39,379 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=403, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=436, PETRI_PLACES=187, PETRI_TRANSITIONS=169} [2022-11-20 10:55:39,380 INFO L288 CegarLoopForPetriNet]: 170 programPoint places, 17 predicate places. [2022-11-20 10:55:39,381 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 169 transitions, 436 flow [2022-11-20 10:55:39,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 159.75) internal successors, (639), 4 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:39,381 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:55:39,382 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, 1, 1, 1] [2022-11-20 10:55:39,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 10:55:39,382 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-20 10:55:39,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:39,383 INFO L85 PathProgramCache]: Analyzing trace with hash 475057769, now seen corresponding path program 1 times [2022-11-20 10:55:39,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:39,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923806852] [2022-11-20 10:55:39,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:39,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:39,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:39,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:39,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:39,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923806852] [2022-11-20 10:55:39,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923806852] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:55:39,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:55:39,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:55:39,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006545350] [2022-11-20 10:55:39,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:55:39,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:55:39,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:39,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:55:39,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:55:39,521 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 193 [2022-11-20 10:55:39,522 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 169 transitions, 436 flow. Second operand has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:39,522 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:55:39,523 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 193 [2022-11-20 10:55:39,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:55:40,979 INFO L130 PetriNetUnfolder]: 2951/6764 cut-off events. [2022-11-20 10:55:40,980 INFO L131 PetriNetUnfolder]: For 879/1214 co-relation queries the response was YES. [2022-11-20 10:55:41,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13272 conditions, 6764 events. 2951/6764 cut-off events. For 879/1214 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 55836 event pairs, 1150 based on Foata normal form. 245/6734 useless extension candidates. Maximal degree in co-relation 12161. Up to 2075 conditions per place. [2022-11-20 10:55:41,020 INFO L137 encePairwiseOnDemand]: 185/193 looper letters, 32 selfloop transitions, 6 changer transitions 15/196 dead transitions. [2022-11-20 10:55:41,020 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 196 transitions, 605 flow [2022-11-20 10:55:41,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:55:41,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:55:41,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 847 transitions. [2022-11-20 10:55:41,029 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.877720207253886 [2022-11-20 10:55:41,029 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 847 transitions. [2022-11-20 10:55:41,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 847 transitions. [2022-11-20 10:55:41,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:55:41,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 847 transitions. [2022-11-20 10:55:41,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 169.4) internal successors, (847), 5 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:41,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 193.0) internal successors, (1158), 6 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:41,036 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 193.0) internal successors, (1158), 6 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:41,036 INFO L175 Difference]: Start difference. First operand has 187 places, 169 transitions, 436 flow. Second operand 5 states and 847 transitions. [2022-11-20 10:55:41,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 196 transitions, 605 flow [2022-11-20 10:55:41,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 196 transitions, 595 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-11-20 10:55:41,045 INFO L231 Difference]: Finished difference. Result has 190 places, 170 transitions, 459 flow [2022-11-20 10:55:41,045 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=459, PETRI_PLACES=190, PETRI_TRANSITIONS=170} [2022-11-20 10:55:41,046 INFO L288 CegarLoopForPetriNet]: 170 programPoint places, 20 predicate places. [2022-11-20 10:55:41,046 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 170 transitions, 459 flow [2022-11-20 10:55:41,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:41,047 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:55:41,047 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, 1, 1, 1, 1, 1, 1] [2022-11-20 10:55:41,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 10:55:41,048 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-20 10:55:41,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:41,049 INFO L85 PathProgramCache]: Analyzing trace with hash 115235046, now seen corresponding path program 1 times [2022-11-20 10:55:41,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:41,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191388959] [2022-11-20 10:55:41,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:41,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:41,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:41,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:41,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:41,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191388959] [2022-11-20 10:55:41,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191388959] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:55:41,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:55:41,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:55:41,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80406465] [2022-11-20 10:55:41,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:55:41,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:55:41,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:41,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:55:41,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:55:41,227 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 193 [2022-11-20 10:55:41,229 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 170 transitions, 459 flow. Second operand has 6 states, 6 states have (on average 153.33333333333334) internal successors, (920), 6 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:41,229 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:55:41,230 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 193 [2022-11-20 10:55:41,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:55:42,121 INFO L130 PetriNetUnfolder]: 1676/4329 cut-off events. [2022-11-20 10:55:42,121 INFO L131 PetriNetUnfolder]: For 1605/1645 co-relation queries the response was YES. [2022-11-20 10:55:42,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9386 conditions, 4329 events. 1676/4329 cut-off events. For 1605/1645 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 33188 event pairs, 910 based on Foata normal form. 0/4124 useless extension candidates. Maximal degree in co-relation 7868. Up to 1200 conditions per place. [2022-11-20 10:55:42,152 INFO L137 encePairwiseOnDemand]: 182/193 looper letters, 46 selfloop transitions, 11 changer transitions 4/196 dead transitions. [2022-11-20 10:55:42,152 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 196 transitions, 654 flow [2022-11-20 10:55:42,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:55:42,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 10:55:42,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1269 transitions. [2022-11-20 10:55:42,158 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8218911917098446 [2022-11-20 10:55:42,158 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1269 transitions. [2022-11-20 10:55:42,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1269 transitions. [2022-11-20 10:55:42,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:55:42,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1269 transitions. [2022-11-20 10:55:42,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 158.625) internal successors, (1269), 8 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:42,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 193.0) internal successors, (1737), 9 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) [2022-11-20 10:55:42,168 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 193.0) internal successors, (1737), 9 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) [2022-11-20 10:55:42,168 INFO L175 Difference]: Start difference. First operand has 190 places, 170 transitions, 459 flow. Second operand 8 states and 1269 transitions. [2022-11-20 10:55:42,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 196 transitions, 654 flow [2022-11-20 10:55:42,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 196 transitions, 644 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-11-20 10:55:42,178 INFO L231 Difference]: Finished difference. Result has 192 places, 169 transitions, 467 flow [2022-11-20 10:55:42,178 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=467, PETRI_PLACES=192, PETRI_TRANSITIONS=169} [2022-11-20 10:55:42,181 INFO L288 CegarLoopForPetriNet]: 170 programPoint places, 22 predicate places. [2022-11-20 10:55:42,181 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 169 transitions, 467 flow [2022-11-20 10:55:42,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 153.33333333333334) internal successors, (920), 6 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:42,182 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:55:42,182 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, 1, 1, 1, 1, 1, 1] [2022-11-20 10:55:42,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 10:55:42,183 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-20 10:55:42,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:42,184 INFO L85 PathProgramCache]: Analyzing trace with hash 115235047, now seen corresponding path program 1 times [2022-11-20 10:55:42,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:42,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853785929] [2022-11-20 10:55:42,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:42,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:42,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:42,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:42,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:42,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853785929] [2022-11-20 10:55:42,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853785929] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:55:42,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:55:42,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:55:42,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905562761] [2022-11-20 10:55:42,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:55:42,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:55:42,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:42,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:55:42,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:55:42,341 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 193 [2022-11-20 10:55:42,342 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 169 transitions, 467 flow. Second operand has 6 states, 6 states have (on average 153.33333333333334) internal successors, (920), 6 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:42,342 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:55:42,343 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 193 [2022-11-20 10:55:42,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:55:43,021 INFO L130 PetriNetUnfolder]: 1276/3369 cut-off events. [2022-11-20 10:55:43,022 INFO L131 PetriNetUnfolder]: For 1377/1377 co-relation queries the response was YES. [2022-11-20 10:55:43,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7370 conditions, 3369 events. 1276/3369 cut-off events. For 1377/1377 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 24030 event pairs, 815 based on Foata normal form. 170/3334 useless extension candidates. Maximal degree in co-relation 5892. Up to 1202 conditions per place. [2022-11-20 10:55:43,042 INFO L137 encePairwiseOnDemand]: 183/193 looper letters, 25 selfloop transitions, 5 changer transitions 39/198 dead transitions. [2022-11-20 10:55:43,042 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 198 transitions, 670 flow [2022-11-20 10:55:43,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:55:43,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 10:55:43,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1122 transitions. [2022-11-20 10:55:43,046 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8304959289415248 [2022-11-20 10:55:43,046 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1122 transitions. [2022-11-20 10:55:43,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1122 transitions. [2022-11-20 10:55:43,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:55:43,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1122 transitions. [2022-11-20 10:55:43,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 160.28571428571428) internal successors, (1122), 7 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:43,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 193.0) internal successors, (1544), 8 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:43,054 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 193.0) internal successors, (1544), 8 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:43,054 INFO L175 Difference]: Start difference. First operand has 192 places, 169 transitions, 467 flow. Second operand 7 states and 1122 transitions. [2022-11-20 10:55:43,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 198 transitions, 670 flow [2022-11-20 10:55:43,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 198 transitions, 653 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-20 10:55:43,062 INFO L231 Difference]: Finished difference. Result has 191 places, 153 transitions, 414 flow [2022-11-20 10:55:43,062 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=414, PETRI_PLACES=191, PETRI_TRANSITIONS=153} [2022-11-20 10:55:43,063 INFO L288 CegarLoopForPetriNet]: 170 programPoint places, 21 predicate places. [2022-11-20 10:55:43,064 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 153 transitions, 414 flow [2022-11-20 10:55:43,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 153.33333333333334) internal successors, (920), 6 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:43,064 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:55:43,065 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, 1, 1, 1, 1, 1, 1] [2022-11-20 10:55:43,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 10:55:43,065 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-20 10:55:43,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:43,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1382626993, now seen corresponding path program 1 times [2022-11-20 10:55:43,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:43,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590149796] [2022-11-20 10:55:43,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:43,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:43,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:43,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:43,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:43,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590149796] [2022-11-20 10:55:43,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590149796] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:55:43,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:55:43,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:55:43,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618615761] [2022-11-20 10:55:43,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:55:43,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:55:43,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:43,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:55:43,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:55:43,194 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 193 [2022-11-20 10:55:43,195 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 153 transitions, 414 flow. Second operand has 6 states, 6 states have (on average 153.33333333333334) internal successors, (920), 6 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:43,196 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:55:43,196 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 193 [2022-11-20 10:55:43,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:55:43,536 INFO L130 PetriNetUnfolder]: 606/1644 cut-off events. [2022-11-20 10:55:43,537 INFO L131 PetriNetUnfolder]: For 400/400 co-relation queries the response was YES. [2022-11-20 10:55:43,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3567 conditions, 1644 events. 606/1644 cut-off events. For 400/400 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 9170 event pairs, 80 based on Foata normal form. 0/1634 useless extension candidates. Maximal degree in co-relation 2850. Up to 650 conditions per place. [2022-11-20 10:55:43,548 INFO L137 encePairwiseOnDemand]: 185/193 looper letters, 37 selfloop transitions, 7 changer transitions 1/174 dead transitions. [2022-11-20 10:55:43,549 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 174 transitions, 558 flow [2022-11-20 10:55:43,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:55:43,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 10:55:43,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1104 transitions. [2022-11-20 10:55:43,553 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8171724648408586 [2022-11-20 10:55:43,553 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1104 transitions. [2022-11-20 10:55:43,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1104 transitions. [2022-11-20 10:55:43,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:55:43,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1104 transitions. [2022-11-20 10:55:43,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 157.71428571428572) internal successors, (1104), 7 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:43,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 193.0) internal successors, (1544), 8 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:43,561 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 193.0) internal successors, (1544), 8 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:43,562 INFO L175 Difference]: Start difference. First operand has 191 places, 153 transitions, 414 flow. Second operand 7 states and 1104 transitions. [2022-11-20 10:55:43,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 174 transitions, 558 flow [2022-11-20 10:55:43,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 174 transitions, 520 flow, removed 2 selfloop flow, removed 9 redundant places. [2022-11-20 10:55:43,581 INFO L231 Difference]: Finished difference. Result has 171 places, 152 transitions, 391 flow [2022-11-20 10:55:43,581 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=391, PETRI_PLACES=171, PETRI_TRANSITIONS=152} [2022-11-20 10:55:43,585 INFO L288 CegarLoopForPetriNet]: 170 programPoint places, 1 predicate places. [2022-11-20 10:55:43,585 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 152 transitions, 391 flow [2022-11-20 10:55:43,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 153.33333333333334) internal successors, (920), 6 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:43,586 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:55:43,586 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, 1, 1, 1, 1, 1, 1] [2022-11-20 10:55:43,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 10:55:43,587 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-20 10:55:43,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:43,589 INFO L85 PathProgramCache]: Analyzing trace with hash 529375626, now seen corresponding path program 1 times [2022-11-20 10:55:43,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:43,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435923736] [2022-11-20 10:55:43,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:43,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:43,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:43,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:43,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:43,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435923736] [2022-11-20 10:55:43,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435923736] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:55:43,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:55:43,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:55:43,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5119997] [2022-11-20 10:55:43,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:55:43,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:55:43,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:43,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:55:43,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:55:43,746 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 193 [2022-11-20 10:55:43,748 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 152 transitions, 391 flow. Second operand has 6 states, 6 states have (on average 153.33333333333334) internal successors, (920), 6 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:43,748 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:55:43,748 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 193 [2022-11-20 10:55:43,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:55:44,025 INFO L130 PetriNetUnfolder]: 341/1139 cut-off events. [2022-11-20 10:55:44,026 INFO L131 PetriNetUnfolder]: For 410/410 co-relation queries the response was YES. [2022-11-20 10:55:44,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2367 conditions, 1139 events. 341/1139 cut-off events. For 410/410 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 5782 event pairs, 100 based on Foata normal form. 150/1274 useless extension candidates. Maximal degree in co-relation 1890. Up to 371 conditions per place. [2022-11-20 10:55:44,030 INFO L137 encePairwiseOnDemand]: 184/193 looper letters, 0 selfloop transitions, 6 changer transitions 72/163 dead transitions. [2022-11-20 10:55:44,030 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 163 transitions, 485 flow [2022-11-20 10:55:44,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:55:44,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 10:55:44,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1092 transitions. [2022-11-20 10:55:44,034 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8082901554404145 [2022-11-20 10:55:44,034 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1092 transitions. [2022-11-20 10:55:44,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1092 transitions. [2022-11-20 10:55:44,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:55:44,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1092 transitions. [2022-11-20 10:55:44,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 156.0) internal successors, (1092), 7 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:44,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 193.0) internal successors, (1544), 8 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:44,042 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 193.0) internal successors, (1544), 8 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:44,042 INFO L175 Difference]: Start difference. First operand has 171 places, 152 transitions, 391 flow. Second operand 7 states and 1092 transitions. [2022-11-20 10:55:44,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 163 transitions, 485 flow [2022-11-20 10:55:44,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 163 transitions, 469 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-11-20 10:55:44,047 INFO L231 Difference]: Finished difference. Result has 172 places, 91 transitions, 255 flow [2022-11-20 10:55:44,048 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=255, PETRI_PLACES=172, PETRI_TRANSITIONS=91} [2022-11-20 10:55:44,048 INFO L288 CegarLoopForPetriNet]: 170 programPoint places, 2 predicate places. [2022-11-20 10:55:44,049 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 91 transitions, 255 flow [2022-11-20 10:55:44,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 153.33333333333334) internal successors, (920), 6 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:44,050 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:55:44,050 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:55:44,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 10:55:44,050 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-20 10:55:44,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:44,051 INFO L85 PathProgramCache]: Analyzing trace with hash 196058310, now seen corresponding path program 2 times [2022-11-20 10:55:44,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:44,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542371525] [2022-11-20 10:55:44,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:44,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:44,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:44,324 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:44,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:44,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542371525] [2022-11-20 10:55:44,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542371525] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:55:44,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2147031994] [2022-11-20 10:55:44,325 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:55:44,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:55:44,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671baf0-e6c0-4f0b-b41e-5e39e505e350/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:55:44,331 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671baf0-e6c0-4f0b-b41e-5e39e505e350/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:55:44,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671baf0-e6c0-4f0b-b41e-5e39e505e350/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 10:55:44,443 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 10:55:44,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:55:44,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 10:55:44,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:55:44,650 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-20 10:55:44,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:55:44,814 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-20 10:55:44,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2147031994] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:55:44,815 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:55:44,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-20 10:55:44,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833775902] [2022-11-20 10:55:44,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:55:44,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 10:55:44,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:44,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 10:55:44,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-20 10:55:44,821 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 193 [2022-11-20 10:55:44,824 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 91 transitions, 255 flow. Second operand has 18 states, 18 states have (on average 145.61111111111111) internal successors, (2621), 18 states have internal predecessors, (2621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:44,825 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:55:44,825 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 193 [2022-11-20 10:55:44,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:55:45,342 INFO L130 PetriNetUnfolder]: 1/124 cut-off events. [2022-11-20 10:55:45,342 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2022-11-20 10:55:45,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 124 events. 1/124 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 2/126 useless extension candidates. Maximal degree in co-relation 183. Up to 7 conditions per place. [2022-11-20 10:55:45,343 INFO L137 encePairwiseOnDemand]: 182/193 looper letters, 0 selfloop transitions, 0 changer transitions 114/114 dead transitions. [2022-11-20 10:55:45,343 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 114 transitions, 425 flow [2022-11-20 10:55:45,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 10:55:45,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-20 10:55:45,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3465 transitions. [2022-11-20 10:55:45,353 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7480569948186528 [2022-11-20 10:55:45,353 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3465 transitions. [2022-11-20 10:55:45,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3465 transitions. [2022-11-20 10:55:45,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:55:45,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3465 transitions. [2022-11-20 10:55:45,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 144.375) internal successors, (3465), 24 states have internal predecessors, (3465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:45,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 193.0) internal successors, (4825), 25 states have internal predecessors, (4825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:45,392 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 193.0) internal successors, (4825), 25 states have internal predecessors, (4825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:45,392 INFO L175 Difference]: Start difference. First operand has 172 places, 91 transitions, 255 flow. Second operand 24 states and 3465 transitions. [2022-11-20 10:55:45,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 114 transitions, 425 flow [2022-11-20 10:55:45,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 114 transitions, 405 flow, removed 0 selfloop flow, removed 10 redundant places. [2022-11-20 10:55:45,395 INFO L231 Difference]: Finished difference. Result has 116 places, 0 transitions, 0 flow [2022-11-20 10:55:45,396 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=0, PETRI_PLACES=116, PETRI_TRANSITIONS=0} [2022-11-20 10:55:45,397 INFO L288 CegarLoopForPetriNet]: 170 programPoint places, -54 predicate places. [2022-11-20 10:55:45,397 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 0 transitions, 0 flow [2022-11-20 10:55:45,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 145.61111111111111) internal successors, (2621), 18 states have internal predecessors, (2621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:45,401 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 13 remaining) [2022-11-20 10:55:45,402 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-11-20 10:55:45,402 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-11-20 10:55:45,402 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-11-20 10:55:45,402 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-11-20 10:55:45,403 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-11-20 10:55:45,403 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 13 remaining) [2022-11-20 10:55:45,403 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 13 remaining) [2022-11-20 10:55:45,403 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 13 remaining) [2022-11-20 10:55:45,404 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-11-20 10:55:45,404 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-11-20 10:55:45,405 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-11-20 10:55:45,405 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-11-20 10:55:45,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671baf0-e6c0-4f0b-b41e-5e39e505e350/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 10:55:45,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671baf0-e6c0-4f0b-b41e-5e39e505e350/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 10:55:45,611 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:55:45,617 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-20 10:55:45,617 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 10:55:45,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 10:55:45 BasicIcfg [2022-11-20 10:55:45,627 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 10:55:45,628 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 10:55:45,628 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 10:55:45,628 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 10:55:45,628 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:55:30" (3/4) ... [2022-11-20 10:55:45,631 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 10:55:45,636 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-20 10:55:45,636 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-20 10:55:45,637 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-20 10:55:45,642 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2022-11-20 10:55:45,642 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-20 10:55:45,643 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 10:55:45,643 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 10:55:45,693 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671baf0-e6c0-4f0b-b41e-5e39e505e350/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 10:55:45,694 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 10:55:45,694 INFO L158 Benchmark]: Toolchain (without parser) took 16406.85ms. Allocated memory was 178.3MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 143.3MB in the beginning and 891.6MB in the end (delta: -748.3MB). Peak memory consumption was 885.2MB. Max. memory is 16.1GB. [2022-11-20 10:55:45,695 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 115.3MB. Free memory is still 84.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:55:45,695 INFO L158 Benchmark]: CACSL2BoogieTranslator took 330.25ms. Allocated memory is still 178.3MB. Free memory was 143.1MB in the beginning and 144.3MB in the end (delta: -1.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-20 10:55:45,695 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.95ms. Allocated memory is still 178.3MB. Free memory was 144.3MB in the beginning and 141.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 10:55:45,696 INFO L158 Benchmark]: Boogie Preprocessor took 33.07ms. Allocated memory is still 178.3MB. Free memory was 141.7MB in the beginning and 140.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 10:55:45,696 INFO L158 Benchmark]: RCFGBuilder took 882.29ms. Allocated memory is still 178.3MB. Free memory was 140.1MB in the beginning and 110.7MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-11-20 10:55:45,697 INFO L158 Benchmark]: TraceAbstraction took 15041.51ms. Allocated memory was 178.3MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 109.8MB in the beginning and 894.7MB in the end (delta: -784.9MB). Peak memory consumption was 849.1MB. Max. memory is 16.1GB. [2022-11-20 10:55:45,697 INFO L158 Benchmark]: Witness Printer took 66.30ms. Allocated memory is still 1.8GB. Free memory was 894.7MB in the beginning and 891.6MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 10:55:45,699 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 115.3MB. Free memory is still 84.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 330.25ms. Allocated memory is still 178.3MB. Free memory was 143.1MB in the beginning and 144.3MB in the end (delta: -1.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.95ms. Allocated memory is still 178.3MB. Free memory was 144.3MB in the beginning and 141.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.07ms. Allocated memory is still 178.3MB. Free memory was 141.7MB in the beginning and 140.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 882.29ms. Allocated memory is still 178.3MB. Free memory was 140.1MB in the beginning and 110.7MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 15041.51ms. Allocated memory was 178.3MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 109.8MB in the beginning and 894.7MB in the end (delta: -784.9MB). Peak memory consumption was 849.1MB. Max. memory is 16.1GB. * Witness Printer took 66.30ms. Allocated memory is still 1.8GB. Free memory was 894.7MB in the beginning and 891.6MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 55]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 55]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 90]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 90]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 171]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 171]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 226 locations, 13 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 14.8s, OverallIterations: 10, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 10.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 732 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 732 mSDsluCounter, 218 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 136 mSDsCounter, 49 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1134 IncrementalHoareTripleChecker+Invalid, 1183 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 49 mSolverCounterUnsat, 82 mSDtfsCounter, 1134 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 586 GetRequests, 473 SyntacticMatches, 5 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=467occurred in iteration=6, InterpolantAutomatonStates: 93, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 1265 NumberOfCodeBlocks, 1229 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 1445 ConstructedInterpolants, 0 QuantifiedInterpolants, 2129 SizeOfPredicates, 12 NumberOfNonLiveVariables, 559 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 15 InterpolantComputations, 8 PerfectInterpolantSequences, 123/266 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-20 10:55:45,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9671baf0-e6c0-4f0b-b41e-5e39e505e350/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE