./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 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_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8 --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 f91e7b856fd6bf43c568f48d1703ed519fbb708e5c1360b96f8534e6fa4ed35d --- 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-2329fc7 [2022-12-13 14:27:46,707 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 14:27:46,709 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 14:27:46,724 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 14:27:46,724 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 14:27:46,725 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 14:27:46,726 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 14:27:46,727 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 14:27:46,728 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 14:27:46,728 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 14:27:46,729 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 14:27:46,730 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 14:27:46,730 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 14:27:46,731 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 14:27:46,732 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 14:27:46,732 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 14:27:46,733 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 14:27:46,734 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 14:27:46,735 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 14:27:46,736 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 14:27:46,737 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 14:27:46,738 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 14:27:46,738 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 14:27:46,739 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 14:27:46,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 14:27:46,742 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 14:27:46,742 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 14:27:46,742 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 14:27:46,743 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 14:27:46,743 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 14:27:46,744 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 14:27:46,744 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 14:27:46,745 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 14:27:46,745 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 14:27:46,746 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 14:27:46,746 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 14:27:46,746 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 14:27:46,746 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 14:27:46,747 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 14:27:46,747 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 14:27:46,748 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 14:27:46,748 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 14:27:46,763 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 14:27:46,763 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 14:27:46,763 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 14:27:46,763 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 14:27:46,764 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 14:27:46,764 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 14:27:46,764 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 14:27:46,765 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 14:27:46,765 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 14:27:46,765 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 14:27:46,765 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 14:27:46,765 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 14:27:46,765 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 14:27:46,765 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 14:27:46,765 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 14:27:46,766 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 14:27:46,766 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 14:27:46,766 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 14:27:46,766 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 14:27:46,766 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 14:27:46,766 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 14:27:46,766 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 14:27:46,766 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 14:27:46,766 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 14:27:46,767 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 14:27:46,767 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 14:27:46,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:27:46,767 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 14:27:46,767 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 14:27:46,767 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 14:27:46,767 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 14:27:46,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 14:27:46,768 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 14:27:46,768 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 14:27:46,768 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 14:27:46,768 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 14:27:46,768 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 14:27:46,768 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f91e7b856fd6bf43c568f48d1703ed519fbb708e5c1360b96f8534e6fa4ed35d [2022-12-13 14:27:46,944 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 14:27:46,962 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 14:27:46,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 14:27:46,965 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 14:27:46,965 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 14:27:46,966 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2022-12-13 14:27:49,497 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 14:27:49,649 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 14:27:49,650 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2022-12-13 14:27:49,655 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/data/4bcf00777/d2536dc16861421a9c16d5154bb9e192/FLAG0a6c41c47 [2022-12-13 14:27:50,068 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/data/4bcf00777/d2536dc16861421a9c16d5154bb9e192 [2022-12-13 14:27:50,071 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 14:27:50,072 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 14:27:50,073 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 14:27:50,073 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 14:27:50,076 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 14:27:50,077 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:27:50" (1/1) ... [2022-12-13 14:27:50,078 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64047662 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:27:50, skipping insertion in model container [2022-12-13 14:27:50,078 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:27:50" (1/1) ... [2022-12-13 14:27:50,084 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 14:27:50,098 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 14:27:50,213 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_8595ac05-b0bb-443f-b969-894b66e2c70d/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c[2598,2611] [2022-12-13 14:27:50,217 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:27:50,224 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 14:27:50,240 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_8595ac05-b0bb-443f-b969-894b66e2c70d/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c[2598,2611] [2022-12-13 14:27:50,242 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:27:50,253 INFO L208 MainTranslator]: Completed translation [2022-12-13 14:27:50,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:27:50 WrapperNode [2022-12-13 14:27:50,253 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 14:27:50,254 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 14:27:50,254 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 14:27:50,254 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 14:27:50,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:27:50" (1/1) ... [2022-12-13 14:27:50,265 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:27:50" (1/1) ... [2022-12-13 14:27:50,282 INFO L138 Inliner]: procedures = 25, calls = 46, calls flagged for inlining = 11, calls inlined = 17, statements flattened = 201 [2022-12-13 14:27:50,282 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 14:27:50,283 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 14:27:50,283 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 14:27:50,283 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 14:27:50,290 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:27:50" (1/1) ... [2022-12-13 14:27:50,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:27:50" (1/1) ... [2022-12-13 14:27:50,292 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:27:50" (1/1) ... [2022-12-13 14:27:50,293 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:27:50" (1/1) ... [2022-12-13 14:27:50,298 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:27:50" (1/1) ... [2022-12-13 14:27:50,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:27:50" (1/1) ... [2022-12-13 14:27:50,303 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:27:50" (1/1) ... [2022-12-13 14:27:50,304 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:27:50" (1/1) ... [2022-12-13 14:27:50,306 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 14:27:50,307 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 14:27:50,307 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 14:27:50,307 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 14:27:50,308 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:27:50" (1/1) ... [2022-12-13 14:27:50,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:27:50,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:27:50,331 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 14:27:50,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 14:27:50,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 14:27:50,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 14:27:50,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 14:27:50,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 14:27:50,366 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 14:27:50,366 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 14:27:50,366 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 14:27:50,366 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 14:27:50,366 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 14:27:50,366 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 14:27:50,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 14:27:50,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 14:27:50,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 14:27:50,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 14:27:50,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 14:27:50,368 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 14:27:50,448 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 14:27:50,449 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 14:27:50,745 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 14:27:50,760 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 14:27:50,761 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-12-13 14:27:50,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:27:50 BoogieIcfgContainer [2022-12-13 14:27:50,763 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 14:27:50,765 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 14:27:50,765 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 14:27:50,767 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 14:27:50,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 02:27:50" (1/3) ... [2022-12-13 14:27:50,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@257d1dd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:27:50, skipping insertion in model container [2022-12-13 14:27:50,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:27:50" (2/3) ... [2022-12-13 14:27:50,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@257d1dd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:27:50, skipping insertion in model container [2022-12-13 14:27:50,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:27:50" (3/3) ... [2022-12-13 14:27:50,769 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-vector-add.wvr.c [2022-12-13 14:27:50,776 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 14:27:50,789 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 14:27:50,789 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-12-13 14:27:50,789 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 14:27:50,852 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 14:27:50,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 306 places, 321 transitions, 666 flow [2022-12-13 14:27:50,953 INFO L130 PetriNetUnfolder]: 25/318 cut-off events. [2022-12-13 14:27:50,953 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 14:27:50,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 331 conditions, 318 events. 25/318 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 267 event pairs, 0 based on Foata normal form. 0/279 useless extension candidates. Maximal degree in co-relation 258. Up to 2 conditions per place. [2022-12-13 14:27:50,958 INFO L82 GeneralOperation]: Start removeDead. Operand has 306 places, 321 transitions, 666 flow [2022-12-13 14:27:50,963 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 269 places, 282 transitions, 579 flow [2022-12-13 14:27:50,966 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 14:27:50,974 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 269 places, 282 transitions, 579 flow [2022-12-13 14:27:50,977 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 269 places, 282 transitions, 579 flow [2022-12-13 14:27:50,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 269 places, 282 transitions, 579 flow [2022-12-13 14:27:51,018 INFO L130 PetriNetUnfolder]: 23/282 cut-off events. [2022-12-13 14:27:51,019 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 14:27:51,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294 conditions, 282 events. 23/282 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 263 event pairs, 0 based on Foata normal form. 0/245 useless extension candidates. Maximal degree in co-relation 258. Up to 2 conditions per place. [2022-12-13 14:27:51,022 INFO L119 LiptonReduction]: Number of co-enabled transitions 3240 [2022-12-13 14:27:57,885 INFO L134 LiptonReduction]: Checked pairs total: 7533 [2022-12-13 14:27:57,886 INFO L136 LiptonReduction]: Total number of compositions: 305 [2022-12-13 14:27:57,898 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 14:27:57,904 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;@35414aa2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 14:27:57,904 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2022-12-13 14:27:57,906 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-12-13 14:27:57,906 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 14:27:57,906 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:27:57,907 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 14:27:57,907 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 14:27:57,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:27:57,911 INFO L85 PathProgramCache]: Analyzing trace with hash 36539, now seen corresponding path program 1 times [2022-12-13 14:27:57,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:27:57,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810626819] [2022-12-13 14:27:57,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:27:57,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:27:58,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:27:58,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:27:58,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:27:58,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810626819] [2022-12-13 14:27:58,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810626819] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:27:58,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:27:58,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 14:27:58,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986559213] [2022-12-13 14:27:58,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:27:58,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:27:58,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:27:58,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:27:58,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:27:58,194 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 284 out of 626 [2022-12-13 14:27:58,198 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 284.6666666666667) internal successors, (854), 3 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:27:58,198 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:27:58,198 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 284 of 626 [2022-12-13 14:27:58,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:27:58,636 INFO L130 PetriNetUnfolder]: 3070/4355 cut-off events. [2022-12-13 14:27:58,637 INFO L131 PetriNetUnfolder]: For 152/152 co-relation queries the response was YES. [2022-12-13 14:27:58,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8837 conditions, 4355 events. 3070/4355 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 23670 event pairs, 2068 based on Foata normal form. 0/2238 useless extension candidates. Maximal degree in co-relation 3838. Up to 2121 conditions per place. [2022-12-13 14:27:58,660 INFO L137 encePairwiseOnDemand]: 610/626 looper letters, 67 selfloop transitions, 8 changer transitions 0/81 dead transitions. [2022-12-13 14:27:58,660 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 81 transitions, 342 flow [2022-12-13 14:27:58,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:27:58,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:27:58,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 935 transitions. [2022-12-13 14:27:58,674 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49787007454739085 [2022-12-13 14:27:58,675 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 935 transitions. [2022-12-13 14:27:58,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 935 transitions. [2022-12-13 14:27:58,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:27:58,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 935 transitions. [2022-12-13 14:27:58,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 311.6666666666667) internal successors, (935), 3 states have internal predecessors, (935), 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) [2022-12-13 14:27:58,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 626.0) internal successors, (2504), 4 states have internal predecessors, (2504), 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) [2022-12-13 14:27:58,692 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 626.0) internal successors, (2504), 4 states have internal predecessors, (2504), 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) [2022-12-13 14:27:58,693 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 111 flow. Second operand 3 states and 935 transitions. [2022-12-13 14:27:58,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 81 transitions, 342 flow [2022-12-13 14:27:58,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 81 transitions, 324 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-12-13 14:27:58,705 INFO L231 Difference]: Finished difference. Result has 50 places, 55 transitions, 178 flow [2022-12-13 14:27:58,707 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=626, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=50, PETRI_TRANSITIONS=55} [2022-12-13 14:27:58,709 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, -1 predicate places. [2022-12-13 14:27:58,710 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 55 transitions, 178 flow [2022-12-13 14:27:58,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 284.6666666666667) internal successors, (854), 3 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:27:58,710 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:27:58,710 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 14:27:58,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 14:27:58,711 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 14:27:58,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:27:58,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1134621, now seen corresponding path program 1 times [2022-12-13 14:27:58,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:27:58,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913790085] [2022-12-13 14:27:58,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:27:58,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:27:58,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:27:58,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:27:58,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:27:58,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913790085] [2022-12-13 14:27:58,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913790085] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:27:58,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554704515] [2022-12-13 14:27:58,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:27:58,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:27:58,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:27:58,782 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:27:58,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 14:27:58,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:27:58,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 14:27:58,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:27:58,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:27:58,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:27:58,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:27:58,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554704515] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:27:58,886 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 14:27:58,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-12-13 14:27:58,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427079792] [2022-12-13 14:27:58,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 14:27:58,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 14:27:58,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:27:58,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 14:27:58,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 14:27:58,966 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 284 out of 626 [2022-12-13 14:27:58,968 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 55 transitions, 178 flow. Second operand has 7 states, 7 states have (on average 285.14285714285717) internal successors, (1996), 7 states have internal predecessors, (1996), 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) [2022-12-13 14:27:58,968 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:27:58,968 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 284 of 626 [2022-12-13 14:27:58,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:27:59,974 INFO L130 PetriNetUnfolder]: 7648/10856 cut-off events. [2022-12-13 14:27:59,974 INFO L131 PetriNetUnfolder]: For 55/55 co-relation queries the response was YES. [2022-12-13 14:27:59,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21834 conditions, 10856 events. 7648/10856 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 703. Compared 66673 event pairs, 5155 based on Foata normal form. 0/5750 useless extension candidates. Maximal degree in co-relation 17303. Up to 2130 conditions per place. [2022-12-13 14:28:00,023 INFO L137 encePairwiseOnDemand]: 610/626 looper letters, 141 selfloop transitions, 45 changer transitions 0/192 dead transitions. [2022-12-13 14:28:00,023 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 192 transitions, 932 flow [2022-12-13 14:28:00,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 14:28:00,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 14:28:00,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2186 transitions. [2022-12-13 14:28:00,030 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4988589685075308 [2022-12-13 14:28:00,030 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2186 transitions. [2022-12-13 14:28:00,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2186 transitions. [2022-12-13 14:28:00,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:28:00,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2186 transitions. [2022-12-13 14:28:00,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 312.2857142857143) internal successors, (2186), 7 states have internal predecessors, (2186), 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) [2022-12-13 14:28:00,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 626.0) internal successors, (5008), 8 states have internal predecessors, (5008), 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) [2022-12-13 14:28:00,048 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 626.0) internal successors, (5008), 8 states have internal predecessors, (5008), 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) [2022-12-13 14:28:00,048 INFO L175 Difference]: Start difference. First operand has 50 places, 55 transitions, 178 flow. Second operand 7 states and 2186 transitions. [2022-12-13 14:28:00,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 192 transitions, 932 flow [2022-12-13 14:28:00,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 192 transitions, 898 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 14:28:00,052 INFO L231 Difference]: Finished difference. Result has 57 places, 88 transitions, 461 flow [2022-12-13 14:28:00,052 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=626, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=461, PETRI_PLACES=57, PETRI_TRANSITIONS=88} [2022-12-13 14:28:00,053 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 6 predicate places. [2022-12-13 14:28:00,053 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 88 transitions, 461 flow [2022-12-13 14:28:00,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 285.14285714285717) internal successors, (1996), 7 states have internal predecessors, (1996), 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) [2022-12-13 14:28:00,054 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:28:00,054 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2022-12-13 14:28:00,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 14:28:00,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:28:00,255 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 14:28:00,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:28:00,256 INFO L85 PathProgramCache]: Analyzing trace with hash 35175162, now seen corresponding path program 1 times [2022-12-13 14:28:00,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:28:00,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505013062] [2022-12-13 14:28:00,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:28:00,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:28:00,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:28:00,363 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:28:00,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:28:00,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505013062] [2022-12-13 14:28:00,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505013062] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:28:00,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648559950] [2022-12-13 14:28:00,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:28:00,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:28:00,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:28:00,366 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:28:00,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 14:28:00,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:28:00,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 14:28:00,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:28:00,435 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:28:00,435 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:28:00,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648559950] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:28:00,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:28:00,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-12-13 14:28:00,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798492743] [2022-12-13 14:28:00,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:28:00,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 14:28:00,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:28:00,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 14:28:00,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-13 14:28:00,489 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 284 out of 626 [2022-12-13 14:28:00,491 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 88 transitions, 461 flow. Second operand has 5 states, 5 states have (on average 284.8) internal successors, (1424), 5 states have internal predecessors, (1424), 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) [2022-12-13 14:28:00,491 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:28:00,491 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 284 of 626 [2022-12-13 14:28:00,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:28:01,301 INFO L130 PetriNetUnfolder]: 7636/10840 cut-off events. [2022-12-13 14:28:01,302 INFO L131 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2022-12-13 14:28:01,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21838 conditions, 10840 events. 7636/10840 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 681. Compared 66503 event pairs, 5155 based on Foata normal form. 2/5750 useless extension candidates. Maximal degree in co-relation 13086. Up to 6272 conditions per place. [2022-12-13 14:28:01,344 INFO L137 encePairwiseOnDemand]: 614/626 looper letters, 97 selfloop transitions, 21 changer transitions 0/124 dead transitions. [2022-12-13 14:28:01,344 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 124 transitions, 705 flow [2022-12-13 14:28:01,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 14:28:01,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 14:28:01,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1532 transitions. [2022-12-13 14:28:01,348 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4894568690095847 [2022-12-13 14:28:01,348 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1532 transitions. [2022-12-13 14:28:01,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1532 transitions. [2022-12-13 14:28:01,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:28:01,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1532 transitions. [2022-12-13 14:28:01,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 306.4) internal successors, (1532), 5 states have internal predecessors, (1532), 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) [2022-12-13 14:28:01,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 626.0) internal successors, (3756), 6 states have internal predecessors, (3756), 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) [2022-12-13 14:28:01,358 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 626.0) internal successors, (3756), 6 states have internal predecessors, (3756), 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) [2022-12-13 14:28:01,358 INFO L175 Difference]: Start difference. First operand has 57 places, 88 transitions, 461 flow. Second operand 5 states and 1532 transitions. [2022-12-13 14:28:01,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 124 transitions, 705 flow [2022-12-13 14:28:01,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 124 transitions, 664 flow, removed 12 selfloop flow, removed 1 redundant places. [2022-12-13 14:28:01,361 INFO L231 Difference]: Finished difference. Result has 55 places, 72 transitions, 354 flow [2022-12-13 14:28:01,362 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=626, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=354, PETRI_PLACES=55, PETRI_TRANSITIONS=72} [2022-12-13 14:28:01,362 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 4 predicate places. [2022-12-13 14:28:01,362 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 72 transitions, 354 flow [2022-12-13 14:28:01,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 284.8) internal successors, (1424), 5 states have internal predecessors, (1424), 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) [2022-12-13 14:28:01,363 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:28:01,363 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-12-13 14:28:01,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-13 14:28:01,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:28:01,565 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 14:28:01,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:28:01,566 INFO L85 PathProgramCache]: Analyzing trace with hash -556345541, now seen corresponding path program 2 times [2022-12-13 14:28:01,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:28:01,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062427256] [2022-12-13 14:28:01,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:28:01,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:28:01,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:28:01,770 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:28:01,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:28:01,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062427256] [2022-12-13 14:28:01,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062427256] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:28:01,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324670445] [2022-12-13 14:28:01,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 14:28:01,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:28:01,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:28:01,772 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:28:01,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 14:28:01,828 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 14:28:01,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:28:01,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 14:28:01,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:28:01,845 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 14:28:01,845 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:28:01,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324670445] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:28:01,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:28:01,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-12-13 14:28:01,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890819903] [2022-12-13 14:28:01,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:28:01,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:28:01,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:28:01,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:28:01,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-13 14:28:01,885 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 626 [2022-12-13 14:28:01,887 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 72 transitions, 354 flow. Second operand has 3 states, 3 states have (on average 289.0) internal successors, (867), 3 states have internal predecessors, (867), 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) [2022-12-13 14:28:01,887 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:28:01,887 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 626 [2022-12-13 14:28:01,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:28:02,508 INFO L130 PetriNetUnfolder]: 7736/10919 cut-off events. [2022-12-13 14:28:02,508 INFO L131 PetriNetUnfolder]: For 76/76 co-relation queries the response was YES. [2022-12-13 14:28:02,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22029 conditions, 10919 events. 7736/10919 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 717. Compared 67371 event pairs, 5195 based on Foata normal form. 1/5570 useless extension candidates. Maximal degree in co-relation 17489. Up to 10604 conditions per place. [2022-12-13 14:28:02,560 INFO L137 encePairwiseOnDemand]: 623/626 looper letters, 59 selfloop transitions, 6 changer transitions 0/71 dead transitions. [2022-12-13 14:28:02,560 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 71 transitions, 474 flow [2022-12-13 14:28:02,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:28:02,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:28:02,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 902 transitions. [2022-12-13 14:28:02,564 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4802981895633653 [2022-12-13 14:28:02,564 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 902 transitions. [2022-12-13 14:28:02,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 902 transitions. [2022-12-13 14:28:02,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:28:02,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 902 transitions. [2022-12-13 14:28:02,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 300.6666666666667) internal successors, (902), 3 states have internal predecessors, (902), 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) [2022-12-13 14:28:02,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 626.0) internal successors, (2504), 4 states have internal predecessors, (2504), 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) [2022-12-13 14:28:02,572 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 626.0) internal successors, (2504), 4 states have internal predecessors, (2504), 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) [2022-12-13 14:28:02,572 INFO L175 Difference]: Start difference. First operand has 55 places, 72 transitions, 354 flow. Second operand 3 states and 902 transitions. [2022-12-13 14:28:02,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 71 transitions, 474 flow [2022-12-13 14:28:02,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 71 transitions, 445 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 14:28:02,576 INFO L231 Difference]: Finished difference. Result has 53 places, 71 transitions, 327 flow [2022-12-13 14:28:02,576 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=626, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=327, PETRI_PLACES=53, PETRI_TRANSITIONS=71} [2022-12-13 14:28:02,577 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 2 predicate places. [2022-12-13 14:28:02,577 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 71 transitions, 327 flow [2022-12-13 14:28:02,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 289.0) internal successors, (867), 3 states have internal predecessors, (867), 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) [2022-12-13 14:28:02,578 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:28:02,578 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2022-12-13 14:28:02,583 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 14:28:02,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:28:02,779 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 14:28:02,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:28:02,779 INFO L85 PathProgramCache]: Analyzing trace with hash 993392218, now seen corresponding path program 1 times [2022-12-13 14:28:02,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:28:02,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717836509] [2022-12-13 14:28:02,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:28:02,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:28:02,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:28:02,890 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 14:28:02,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:28:02,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717836509] [2022-12-13 14:28:02,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717836509] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:28:02,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:28:02,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 14:28:02,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513650542] [2022-12-13 14:28:02,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:28:02,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:28:02,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:28:02,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:28:02,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 14:28:03,031 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 626 [2022-12-13 14:28:03,033 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 71 transitions, 327 flow. Second operand has 4 states, 4 states have (on average 275.25) internal successors, (1101), 4 states have internal predecessors, (1101), 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) [2022-12-13 14:28:03,033 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:28:03,033 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 626 [2022-12-13 14:28:03,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:28:03,722 INFO L130 PetriNetUnfolder]: 7636/10842 cut-off events. [2022-12-13 14:28:03,722 INFO L131 PetriNetUnfolder]: For 75/75 co-relation queries the response was YES. [2022-12-13 14:28:03,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21826 conditions, 10842 events. 7636/10842 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 600. Compared 65512 event pairs, 5155 based on Foata normal form. 3/5795 useless extension candidates. Maximal degree in co-relation 17395. Up to 8360 conditions per place. [2022-12-13 14:28:03,751 INFO L137 encePairwiseOnDemand]: 617/626 looper letters, 73 selfloop transitions, 21 changer transitions 0/100 dead transitions. [2022-12-13 14:28:03,751 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 100 transitions, 583 flow [2022-12-13 14:28:03,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 14:28:03,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 14:28:03,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1172 transitions. [2022-12-13 14:28:03,754 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4680511182108626 [2022-12-13 14:28:03,754 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1172 transitions. [2022-12-13 14:28:03,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1172 transitions. [2022-12-13 14:28:03,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:28:03,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1172 transitions. [2022-12-13 14:28:03,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 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) [2022-12-13 14:28:03,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 626.0) internal successors, (3130), 5 states have internal predecessors, (3130), 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) [2022-12-13 14:28:03,759 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 626.0) internal successors, (3130), 5 states have internal predecessors, (3130), 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) [2022-12-13 14:28:03,759 INFO L175 Difference]: Start difference. First operand has 53 places, 71 transitions, 327 flow. Second operand 4 states and 1172 transitions. [2022-12-13 14:28:03,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 100 transitions, 583 flow [2022-12-13 14:28:03,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 100 transitions, 571 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 14:28:03,761 INFO L231 Difference]: Finished difference. Result has 55 places, 74 transitions, 394 flow [2022-12-13 14:28:03,761 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=626, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=394, PETRI_PLACES=55, PETRI_TRANSITIONS=74} [2022-12-13 14:28:03,762 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 4 predicate places. [2022-12-13 14:28:03,762 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 74 transitions, 394 flow [2022-12-13 14:28:03,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 275.25) internal successors, (1101), 4 states have internal predecessors, (1101), 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) [2022-12-13 14:28:03,762 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:28:03,762 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2022-12-13 14:28:03,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 14:28:03,762 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 14:28:03,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:28:03,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1011826120, now seen corresponding path program 1 times [2022-12-13 14:28:03,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:28:03,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415124770] [2022-12-13 14:28:03,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:28:03,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:28:03,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:28:03,856 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 14:28:03,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:28:03,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415124770] [2022-12-13 14:28:03,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415124770] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:28:03,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751061092] [2022-12-13 14:28:03,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:28:03,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:28:03,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:28:03,858 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:28:03,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 14:28:03,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:28:03,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 14:28:03,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:28:03,981 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 14:28:03,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:28:04,033 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 14:28:04,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751061092] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:28:04,034 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 14:28:04,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 13 [2022-12-13 14:28:04,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376262363] [2022-12-13 14:28:04,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 14:28:04,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 14:28:04,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:28:04,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 14:28:04,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-12-13 14:28:04,455 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 626 [2022-12-13 14:28:04,457 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 74 transitions, 394 flow. Second operand has 14 states, 14 states have (on average 271.2857142857143) internal successors, (3798), 14 states have internal predecessors, (3798), 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) [2022-12-13 14:28:04,457 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:28:04,457 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 626 [2022-12-13 14:28:04,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:28:05,584 INFO L130 PetriNetUnfolder]: 9157/13006 cut-off events. [2022-12-13 14:28:05,584 INFO L131 PetriNetUnfolder]: For 120/120 co-relation queries the response was YES. [2022-12-13 14:28:05,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26219 conditions, 13006 events. 9157/13006 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 78684 event pairs, 6184 based on Foata normal form. 3/6964 useless extension candidates. Maximal degree in co-relation 17477. Up to 6252 conditions per place. [2022-12-13 14:28:05,619 INFO L137 encePairwiseOnDemand]: 614/626 looper letters, 116 selfloop transitions, 38 changer transitions 0/160 dead transitions. [2022-12-13 14:28:05,619 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 160 transitions, 946 flow [2022-12-13 14:28:05,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 14:28:05,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 14:28:05,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2843 transitions. [2022-12-13 14:28:05,624 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4541533546325879 [2022-12-13 14:28:05,624 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2843 transitions. [2022-12-13 14:28:05,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2843 transitions. [2022-12-13 14:28:05,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:28:05,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2843 transitions. [2022-12-13 14:28:05,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 284.3) internal successors, (2843), 10 states have internal predecessors, (2843), 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) [2022-12-13 14:28:05,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 626.0) internal successors, (6886), 11 states have internal predecessors, (6886), 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) [2022-12-13 14:28:05,634 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 626.0) internal successors, (6886), 11 states have internal predecessors, (6886), 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) [2022-12-13 14:28:05,634 INFO L175 Difference]: Start difference. First operand has 55 places, 74 transitions, 394 flow. Second operand 10 states and 2843 transitions. [2022-12-13 14:28:05,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 160 transitions, 946 flow [2022-12-13 14:28:05,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 160 transitions, 914 flow, removed 5 selfloop flow, removed 1 redundant places. [2022-12-13 14:28:05,637 INFO L231 Difference]: Finished difference. Result has 65 places, 84 transitions, 544 flow [2022-12-13 14:28:05,637 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=626, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=544, PETRI_PLACES=65, PETRI_TRANSITIONS=84} [2022-12-13 14:28:05,637 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 14 predicate places. [2022-12-13 14:28:05,638 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 84 transitions, 544 flow [2022-12-13 14:28:05,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 271.2857142857143) internal successors, (3798), 14 states have internal predecessors, (3798), 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) [2022-12-13 14:28:05,639 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:28:05,639 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1] [2022-12-13 14:28:05,643 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 14:28:05,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 14:28:05,839 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 14:28:05,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:28:05,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1250914842, now seen corresponding path program 2 times [2022-12-13 14:28:05,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:28:05,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468207612] [2022-12-13 14:28:05,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:28:05,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:28:05,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:28:05,964 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 14:28:05,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:28:05,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468207612] [2022-12-13 14:28:05,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468207612] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:28:05,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641584507] [2022-12-13 14:28:05,965 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 14:28:05,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:28:05,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:28:05,966 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:28:05,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 14:28:06,025 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 14:28:06,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:28:06,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 14:28:06,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:28:06,045 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-13 14:28:06,045 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:28:06,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641584507] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:28:06,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:28:06,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2022-12-13 14:28:06,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666702204] [2022-12-13 14:28:06,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:28:06,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:28:06,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:28:06,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:28:06,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-12-13 14:28:06,089 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 626 [2022-12-13 14:28:06,090 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 84 transitions, 544 flow. Second operand has 4 states, 4 states have (on average 287.25) internal successors, (1149), 4 states have internal predecessors, (1149), 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) [2022-12-13 14:28:06,090 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:28:06,090 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 626 [2022-12-13 14:28:06,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:28:06,970 INFO L130 PetriNetUnfolder]: 9282/13103 cut-off events. [2022-12-13 14:28:06,971 INFO L131 PetriNetUnfolder]: For 135/135 co-relation queries the response was YES. [2022-12-13 14:28:06,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26502 conditions, 13103 events. 9282/13103 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 656. Compared 79934 event pairs, 6234 based on Foata normal form. 3/6686 useless extension candidates. Maximal degree in co-relation 17661. Up to 12731 conditions per place. [2022-12-13 14:28:07,022 INFO L137 encePairwiseOnDemand]: 622/626 looper letters, 74 selfloop transitions, 1 changer transitions 0/81 dead transitions. [2022-12-13 14:28:07,022 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 81 transitions, 655 flow [2022-12-13 14:28:07,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:28:07,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:28:07,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 895 transitions. [2022-12-13 14:28:07,025 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47657082002129925 [2022-12-13 14:28:07,025 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 895 transitions. [2022-12-13 14:28:07,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 895 transitions. [2022-12-13 14:28:07,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:28:07,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 895 transitions. [2022-12-13 14:28:07,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 298.3333333333333) internal successors, (895), 3 states have internal predecessors, (895), 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) [2022-12-13 14:28:07,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 626.0) internal successors, (2504), 4 states have internal predecessors, (2504), 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) [2022-12-13 14:28:07,030 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 626.0) internal successors, (2504), 4 states have internal predecessors, (2504), 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) [2022-12-13 14:28:07,030 INFO L175 Difference]: Start difference. First operand has 65 places, 84 transitions, 544 flow. Second operand 3 states and 895 transitions. [2022-12-13 14:28:07,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 81 transitions, 655 flow [2022-12-13 14:28:07,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 81 transitions, 538 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-12-13 14:28:07,033 INFO L231 Difference]: Finished difference. Result has 57 places, 81 transitions, 390 flow [2022-12-13 14:28:07,034 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=626, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=390, PETRI_PLACES=57, PETRI_TRANSITIONS=81} [2022-12-13 14:28:07,034 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 6 predicate places. [2022-12-13 14:28:07,034 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 81 transitions, 390 flow [2022-12-13 14:28:07,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 287.25) internal successors, (1149), 4 states have internal predecessors, (1149), 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) [2022-12-13 14:28:07,035 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:28:07,035 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:28:07,040 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 14:28:07,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:28:07,237 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 14:28:07,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:28:07,238 INFO L85 PathProgramCache]: Analyzing trace with hash 399869482, now seen corresponding path program 1 times [2022-12-13 14:28:07,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:28:07,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826451298] [2022-12-13 14:28:07,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:28:07,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:28:07,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:28:07,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:28:07,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:28:07,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826451298] [2022-12-13 14:28:07,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826451298] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:28:07,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:28:07,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 14:28:07,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354998573] [2022-12-13 14:28:07,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:28:07,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:28:07,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:28:07,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:28:07,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:28:07,325 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 626 [2022-12-13 14:28:07,326 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 81 transitions, 390 flow. Second operand has 3 states, 3 states have (on average 297.0) internal successors, (891), 3 states have internal predecessors, (891), 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) [2022-12-13 14:28:07,326 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:28:07,327 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 626 [2022-12-13 14:28:07,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:28:08,580 INFO L130 PetriNetUnfolder]: 14424/21035 cut-off events. [2022-12-13 14:28:08,581 INFO L131 PetriNetUnfolder]: For 86/86 co-relation queries the response was YES. [2022-12-13 14:28:08,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41914 conditions, 21035 events. 14424/21035 cut-off events. For 86/86 co-relation queries the response was YES. Maximal size of possible extension queue 1035. Compared 143795 event pairs, 6582 based on Foata normal form. 0/12047 useless extension candidates. Maximal degree in co-relation 41901. Up to 12756 conditions per place. [2022-12-13 14:28:08,654 INFO L137 encePairwiseOnDemand]: 622/626 looper letters, 96 selfloop transitions, 2 changer transitions 0/103 dead transitions. [2022-12-13 14:28:08,654 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 103 transitions, 635 flow [2022-12-13 14:28:08,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:28:08,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:28:08,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 941 transitions. [2022-12-13 14:28:08,656 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5010649627263046 [2022-12-13 14:28:08,656 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 941 transitions. [2022-12-13 14:28:08,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 941 transitions. [2022-12-13 14:28:08,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:28:08,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 941 transitions. [2022-12-13 14:28:08,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 313.6666666666667) internal successors, (941), 3 states have internal predecessors, (941), 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) [2022-12-13 14:28:08,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 626.0) internal successors, (2504), 4 states have internal predecessors, (2504), 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) [2022-12-13 14:28:08,660 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 626.0) internal successors, (2504), 4 states have internal predecessors, (2504), 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) [2022-12-13 14:28:08,660 INFO L175 Difference]: Start difference. First operand has 57 places, 81 transitions, 390 flow. Second operand 3 states and 941 transitions. [2022-12-13 14:28:08,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 103 transitions, 635 flow [2022-12-13 14:28:08,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 103 transitions, 634 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 14:28:08,662 INFO L231 Difference]: Finished difference. Result has 59 places, 82 transitions, 403 flow [2022-12-13 14:28:08,663 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=626, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=403, PETRI_PLACES=59, PETRI_TRANSITIONS=82} [2022-12-13 14:28:08,663 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 8 predicate places. [2022-12-13 14:28:08,663 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 82 transitions, 403 flow [2022-12-13 14:28:08,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 297.0) internal successors, (891), 3 states have internal predecessors, (891), 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) [2022-12-13 14:28:08,663 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:28:08,664 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:28:08,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 14:28:08,664 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 14:28:08,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:28:08,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1218074453, now seen corresponding path program 1 times [2022-12-13 14:28:08,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:28:08,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403041234] [2022-12-13 14:28:08,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:28:08,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:28:08,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:28:08,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:28:08,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:28:08,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403041234] [2022-12-13 14:28:08,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403041234] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:28:08,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:28:08,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 14:28:08,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174527144] [2022-12-13 14:28:08,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:28:08,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:28:08,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:28:08,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:28:08,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:28:08,716 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 626 [2022-12-13 14:28:08,717 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 82 transitions, 403 flow. Second operand has 3 states, 3 states have (on average 297.6666666666667) internal successors, (893), 3 states have internal predecessors, (893), 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) [2022-12-13 14:28:08,717 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:28:08,717 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 626 [2022-12-13 14:28:08,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:28:10,687 INFO L130 PetriNetUnfolder]: 18384/27617 cut-off events. [2022-12-13 14:28:10,687 INFO L131 PetriNetUnfolder]: For 2066/2066 co-relation queries the response was YES. [2022-12-13 14:28:10,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58505 conditions, 27617 events. 18384/27617 cut-off events. For 2066/2066 co-relation queries the response was YES. Maximal size of possible extension queue 1261. Compared 203959 event pairs, 9462 based on Foata normal form. 0/16751 useless extension candidates. Maximal degree in co-relation 58491. Up to 17220 conditions per place. [2022-12-13 14:28:10,782 INFO L137 encePairwiseOnDemand]: 622/626 looper letters, 96 selfloop transitions, 2 changer transitions 0/103 dead transitions. [2022-12-13 14:28:10,782 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 103 transitions, 654 flow [2022-12-13 14:28:10,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:28:10,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:28:10,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 939 transitions. [2022-12-13 14:28:10,784 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5 [2022-12-13 14:28:10,784 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 939 transitions. [2022-12-13 14:28:10,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 939 transitions. [2022-12-13 14:28:10,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:28:10,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 939 transitions. [2022-12-13 14:28:10,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 313.0) internal successors, (939), 3 states have internal predecessors, (939), 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) [2022-12-13 14:28:10,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 626.0) internal successors, (2504), 4 states have internal predecessors, (2504), 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) [2022-12-13 14:28:10,788 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 626.0) internal successors, (2504), 4 states have internal predecessors, (2504), 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) [2022-12-13 14:28:10,788 INFO L175 Difference]: Start difference. First operand has 59 places, 82 transitions, 403 flow. Second operand 3 states and 939 transitions. [2022-12-13 14:28:10,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 103 transitions, 654 flow [2022-12-13 14:28:10,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 103 transitions, 651 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 14:28:10,791 INFO L231 Difference]: Finished difference. Result has 61 places, 83 transitions, 415 flow [2022-12-13 14:28:10,791 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=626, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=415, PETRI_PLACES=61, PETRI_TRANSITIONS=83} [2022-12-13 14:28:10,791 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 10 predicate places. [2022-12-13 14:28:10,792 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 83 transitions, 415 flow [2022-12-13 14:28:10,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 297.6666666666667) internal successors, (893), 3 states have internal predecessors, (893), 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) [2022-12-13 14:28:10,792 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:28:10,792 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:28:10,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 14:28:10,792 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 14:28:10,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:28:10,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1724924594, now seen corresponding path program 1 times [2022-12-13 14:28:10,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:28:10,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075230313] [2022-12-13 14:28:10,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:28:10,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:28:10,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:28:10,829 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:28:10,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:28:10,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075230313] [2022-12-13 14:28:10,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075230313] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:28:10,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:28:10,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 14:28:10,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327045980] [2022-12-13 14:28:10,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:28:10,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:28:10,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:28:10,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:28:10,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:28:10,841 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 626 [2022-12-13 14:28:10,841 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 83 transitions, 415 flow. Second operand has 3 states, 3 states have (on average 297.6666666666667) internal successors, (893), 3 states have internal predecessors, (893), 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) [2022-12-13 14:28:10,842 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:28:10,842 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 626 [2022-12-13 14:28:10,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:28:12,293 INFO L130 PetriNetUnfolder]: 16674/24779 cut-off events. [2022-12-13 14:28:12,293 INFO L131 PetriNetUnfolder]: For 4238/4238 co-relation queries the response was YES. [2022-12-13 14:28:12,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56118 conditions, 24779 events. 16674/24779 cut-off events. For 4238/4238 co-relation queries the response was YES. Maximal size of possible extension queue 1070. Compared 170459 event pairs, 9768 based on Foata normal form. 0/15353 useless extension candidates. Maximal degree in co-relation 56103. Up to 21900 conditions per place. [2022-12-13 14:28:12,391 INFO L137 encePairwiseOnDemand]: 624/626 looper letters, 92 selfloop transitions, 1 changer transitions 0/98 dead transitions. [2022-12-13 14:28:12,391 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 98 transitions, 641 flow [2022-12-13 14:28:12,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:28:12,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:28:12,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 932 transitions. [2022-12-13 14:28:12,394 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49627263045793396 [2022-12-13 14:28:12,394 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 932 transitions. [2022-12-13 14:28:12,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 932 transitions. [2022-12-13 14:28:12,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:28:12,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 932 transitions. [2022-12-13 14:28:12,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 310.6666666666667) internal successors, (932), 3 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) [2022-12-13 14:28:12,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 626.0) internal successors, (2504), 4 states have internal predecessors, (2504), 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) [2022-12-13 14:28:12,397 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 626.0) internal successors, (2504), 4 states have internal predecessors, (2504), 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) [2022-12-13 14:28:12,397 INFO L175 Difference]: Start difference. First operand has 61 places, 83 transitions, 415 flow. Second operand 3 states and 932 transitions. [2022-12-13 14:28:12,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 98 transitions, 641 flow [2022-12-13 14:28:12,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 98 transitions, 638 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 14:28:12,401 INFO L231 Difference]: Finished difference. Result has 61 places, 82 transitions, 411 flow [2022-12-13 14:28:12,401 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=626, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=411, PETRI_PLACES=61, PETRI_TRANSITIONS=82} [2022-12-13 14:28:12,401 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 10 predicate places. [2022-12-13 14:28:12,401 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 82 transitions, 411 flow [2022-12-13 14:28:12,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 297.6666666666667) internal successors, (893), 3 states have internal predecessors, (893), 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) [2022-12-13 14:28:12,402 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:28:12,402 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:28:12,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 14:28:12,402 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 14:28:12,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:28:12,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1724924536, now seen corresponding path program 1 times [2022-12-13 14:28:12,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:28:12,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500435781] [2022-12-13 14:28:12,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:28:12,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:28:12,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:28:12,447 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:28:12,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:28:12,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500435781] [2022-12-13 14:28:12,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500435781] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:28:12,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625231833] [2022-12-13 14:28:12,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:28:12,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:28:12,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:28:12,449 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:28:12,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 14:28:12,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:28:12,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 14:28:12,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:28:12,547 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 14:28:12,547 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:28:12,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625231833] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:28:12,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:28:12,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2022-12-13 14:28:12,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524312691] [2022-12-13 14:28:12,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:28:12,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 14:28:12,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:28:12,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 14:28:12,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 14:28:12,675 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 626 [2022-12-13 14:28:12,676 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 82 transitions, 411 flow. Second operand has 5 states, 5 states have (on average 277.2) internal successors, (1386), 5 states have internal predecessors, (1386), 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) [2022-12-13 14:28:12,676 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:28:12,677 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 626 [2022-12-13 14:28:12,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:28:13,981 INFO L130 PetriNetUnfolder]: 13679/20449 cut-off events. [2022-12-13 14:28:13,981 INFO L131 PetriNetUnfolder]: For 4455/4455 co-relation queries the response was YES. [2022-12-13 14:28:14,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46618 conditions, 20449 events. 13679/20449 cut-off events. For 4455/4455 co-relation queries the response was YES. Maximal size of possible extension queue 955. Compared 143869 event pairs, 10281 based on Foata normal form. 0/12748 useless extension candidates. Maximal degree in co-relation 46603. Up to 18154 conditions per place. [2022-12-13 14:28:14,053 INFO L137 encePairwiseOnDemand]: 615/626 looper letters, 87 selfloop transitions, 30 changer transitions 0/122 dead transitions. [2022-12-13 14:28:14,053 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 122 transitions, 760 flow [2022-12-13 14:28:14,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 14:28:14,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 14:28:14,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1458 transitions. [2022-12-13 14:28:14,056 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.465814696485623 [2022-12-13 14:28:14,056 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1458 transitions. [2022-12-13 14:28:14,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1458 transitions. [2022-12-13 14:28:14,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:28:14,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1458 transitions. [2022-12-13 14:28:14,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 291.6) internal successors, (1458), 5 states have internal predecessors, (1458), 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) [2022-12-13 14:28:14,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 626.0) internal successors, (3756), 6 states have internal predecessors, (3756), 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) [2022-12-13 14:28:14,062 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 626.0) internal successors, (3756), 6 states have internal predecessors, (3756), 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) [2022-12-13 14:28:14,062 INFO L175 Difference]: Start difference. First operand has 61 places, 82 transitions, 411 flow. Second operand 5 states and 1458 transitions. [2022-12-13 14:28:14,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 122 transitions, 760 flow [2022-12-13 14:28:14,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 122 transitions, 758 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 14:28:14,067 INFO L231 Difference]: Finished difference. Result has 66 places, 83 transitions, 488 flow [2022-12-13 14:28:14,068 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=626, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=488, PETRI_PLACES=66, PETRI_TRANSITIONS=83} [2022-12-13 14:28:14,068 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 15 predicate places. [2022-12-13 14:28:14,068 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 83 transitions, 488 flow [2022-12-13 14:28:14,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 277.2) internal successors, (1386), 5 states have internal predecessors, (1386), 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) [2022-12-13 14:28:14,069 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:28:14,069 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:28:14,075 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 14:28:14,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:28:14,270 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 14:28:14,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:28:14,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1866390130, now seen corresponding path program 1 times [2022-12-13 14:28:14,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:28:14,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558023473] [2022-12-13 14:28:14,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:28:14,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:28:14,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:28:14,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:28:14,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:28:14,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558023473] [2022-12-13 14:28:14,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558023473] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:28:14,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:28:14,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 14:28:14,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723473882] [2022-12-13 14:28:14,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:28:14,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 14:28:14,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:28:14,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 14:28:14,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:28:14,499 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 626 [2022-12-13 14:28:14,500 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 83 transitions, 488 flow. Second operand has 5 states, 5 states have (on average 268.6) internal successors, (1343), 5 states have internal predecessors, (1343), 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) [2022-12-13 14:28:14,500 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:28:14,500 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 626 [2022-12-13 14:28:14,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:28:16,114 INFO L130 PetriNetUnfolder]: 12324/18618 cut-off events. [2022-12-13 14:28:16,114 INFO L131 PetriNetUnfolder]: For 4068/4165 co-relation queries the response was YES. [2022-12-13 14:28:16,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42730 conditions, 18618 events. 12324/18618 cut-off events. For 4068/4165 co-relation queries the response was YES. Maximal size of possible extension queue 896. Compared 131402 event pairs, 8502 based on Foata normal form. 97/13142 useless extension candidates. Maximal degree in co-relation 42712. Up to 14454 conditions per place. [2022-12-13 14:28:16,212 INFO L137 encePairwiseOnDemand]: 613/626 looper letters, 96 selfloop transitions, 32 changer transitions 0/134 dead transitions. [2022-12-13 14:28:16,212 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 134 transitions, 894 flow [2022-12-13 14:28:16,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 14:28:16,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 14:28:16,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1688 transitions. [2022-12-13 14:28:16,216 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4494142705005325 [2022-12-13 14:28:16,217 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1688 transitions. [2022-12-13 14:28:16,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1688 transitions. [2022-12-13 14:28:16,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:28:16,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1688 transitions. [2022-12-13 14:28:16,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 281.3333333333333) internal successors, (1688), 6 states have internal predecessors, (1688), 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) [2022-12-13 14:28:16,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 626.0) internal successors, (4382), 7 states have internal predecessors, (4382), 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) [2022-12-13 14:28:16,224 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 626.0) internal successors, (4382), 7 states have internal predecessors, (4382), 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) [2022-12-13 14:28:16,225 INFO L175 Difference]: Start difference. First operand has 66 places, 83 transitions, 488 flow. Second operand 6 states and 1688 transitions. [2022-12-13 14:28:16,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 134 transitions, 894 flow [2022-12-13 14:28:16,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 134 transitions, 843 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 14:28:16,229 INFO L231 Difference]: Finished difference. Result has 72 places, 86 transitions, 549 flow [2022-12-13 14:28:16,230 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=626, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=549, PETRI_PLACES=72, PETRI_TRANSITIONS=86} [2022-12-13 14:28:16,230 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 21 predicate places. [2022-12-13 14:28:16,230 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 86 transitions, 549 flow [2022-12-13 14:28:16,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 268.6) internal successors, (1343), 5 states have internal predecessors, (1343), 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) [2022-12-13 14:28:16,231 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:28:16,231 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:28:16,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 14:28:16,231 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 14:28:16,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:28:16,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1866390129, now seen corresponding path program 1 times [2022-12-13 14:28:16,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:28:16,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430265524] [2022-12-13 14:28:16,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:28:16,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:28:16,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:28:16,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:28:16,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:28:16,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430265524] [2022-12-13 14:28:16,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430265524] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:28:16,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:28:16,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 14:28:16,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045087337] [2022-12-13 14:28:16,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:28:16,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:28:16,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:28:16,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:28:16,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 14:28:16,306 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 292 out of 626 [2022-12-13 14:28:16,308 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 86 transitions, 549 flow. Second operand has 4 states, 4 states have (on average 295.25) internal successors, (1181), 4 states have internal predecessors, (1181), 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) [2022-12-13 14:28:16,308 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:28:16,308 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 292 of 626 [2022-12-13 14:28:16,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:28:17,657 INFO L130 PetriNetUnfolder]: 10464/16301 cut-off events. [2022-12-13 14:28:17,657 INFO L131 PetriNetUnfolder]: For 5317/5398 co-relation queries the response was YES. [2022-12-13 14:28:17,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39474 conditions, 16301 events. 10464/16301 cut-off events. For 5317/5398 co-relation queries the response was YES. Maximal size of possible extension queue 819. Compared 118520 event pairs, 1954 based on Foata normal form. 893/13656 useless extension candidates. Maximal degree in co-relation 39453. Up to 11348 conditions per place. [2022-12-13 14:28:17,715 INFO L137 encePairwiseOnDemand]: 623/626 looper letters, 92 selfloop transitions, 2 changer transitions 0/100 dead transitions. [2022-12-13 14:28:17,715 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 100 transitions, 778 flow [2022-12-13 14:28:17,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 14:28:17,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 14:28:17,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1216 transitions. [2022-12-13 14:28:17,718 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48562300319488816 [2022-12-13 14:28:17,718 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1216 transitions. [2022-12-13 14:28:17,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1216 transitions. [2022-12-13 14:28:17,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:28:17,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1216 transitions. [2022-12-13 14:28:17,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 304.0) internal successors, (1216), 4 states have internal predecessors, (1216), 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) [2022-12-13 14:28:17,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 626.0) internal successors, (3130), 5 states have internal predecessors, (3130), 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) [2022-12-13 14:28:17,722 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 626.0) internal successors, (3130), 5 states have internal predecessors, (3130), 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) [2022-12-13 14:28:17,722 INFO L175 Difference]: Start difference. First operand has 72 places, 86 transitions, 549 flow. Second operand 4 states and 1216 transitions. [2022-12-13 14:28:17,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 100 transitions, 778 flow [2022-12-13 14:28:17,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 100 transitions, 705 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 14:28:17,978 INFO L231 Difference]: Finished difference. Result has 70 places, 84 transitions, 471 flow [2022-12-13 14:28:17,978 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=626, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=471, PETRI_PLACES=70, PETRI_TRANSITIONS=84} [2022-12-13 14:28:17,978 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 19 predicate places. [2022-12-13 14:28:17,978 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 84 transitions, 471 flow [2022-12-13 14:28:17,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 295.25) internal successors, (1181), 4 states have internal predecessors, (1181), 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) [2022-12-13 14:28:17,978 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:28:17,978 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:28:17,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 14:28:17,979 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 14:28:17,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:28:17,979 INFO L85 PathProgramCache]: Analyzing trace with hash -521752139, now seen corresponding path program 1 times [2022-12-13 14:28:17,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:28:17,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042677037] [2022-12-13 14:28:17,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:28:17,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:28:17,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:28:18,018 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:28:18,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:28:18,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042677037] [2022-12-13 14:28:18,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042677037] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:28:18,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405096430] [2022-12-13 14:28:18,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:28:18,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:28:18,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:28:18,020 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:28:18,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 14:28:18,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:28:18,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 14:28:18,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:28:18,112 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:28:18,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:28:18,124 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:28:18,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405096430] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:28:18,124 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 14:28:18,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 14:28:18,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697744551] [2022-12-13 14:28:18,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 14:28:18,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 14:28:18,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:28:18,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 14:28:18,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 14:28:18,147 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 626 [2022-12-13 14:28:18,148 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 84 transitions, 471 flow. Second operand has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 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) [2022-12-13 14:28:18,148 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:28:18,148 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 626 [2022-12-13 14:28:18,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:28:20,920 INFO L130 PetriNetUnfolder]: 26719/39993 cut-off events. [2022-12-13 14:28:20,920 INFO L131 PetriNetUnfolder]: For 14128/14307 co-relation queries the response was YES. [2022-12-13 14:28:21,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97723 conditions, 39993 events. 26719/39993 cut-off events. For 14128/14307 co-relation queries the response was YES. Maximal size of possible extension queue 1292. Compared 292657 event pairs, 4855 based on Foata normal form. 179/31754 useless extension candidates. Maximal degree in co-relation 97703. Up to 9741 conditions per place. [2022-12-13 14:28:21,116 INFO L137 encePairwiseOnDemand]: 622/626 looper letters, 171 selfloop transitions, 9 changer transitions 0/186 dead transitions. [2022-12-13 14:28:21,116 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 186 transitions, 1176 flow [2022-12-13 14:28:21,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 14:28:21,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 14:28:21,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2182 transitions. [2022-12-13 14:28:21,120 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49794614331355547 [2022-12-13 14:28:21,120 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2182 transitions. [2022-12-13 14:28:21,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2182 transitions. [2022-12-13 14:28:21,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:28:21,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2182 transitions. [2022-12-13 14:28:21,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 311.7142857142857) internal successors, (2182), 7 states have internal predecessors, (2182), 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) [2022-12-13 14:28:21,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 626.0) internal successors, (5008), 8 states have internal predecessors, (5008), 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) [2022-12-13 14:28:21,127 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 626.0) internal successors, (5008), 8 states have internal predecessors, (5008), 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) [2022-12-13 14:28:21,127 INFO L175 Difference]: Start difference. First operand has 70 places, 84 transitions, 471 flow. Second operand 7 states and 2182 transitions. [2022-12-13 14:28:21,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 186 transitions, 1176 flow [2022-12-13 14:28:21,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 186 transitions, 1173 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 14:28:21,195 INFO L231 Difference]: Finished difference. Result has 77 places, 90 transitions, 527 flow [2022-12-13 14:28:21,195 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=626, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=527, PETRI_PLACES=77, PETRI_TRANSITIONS=90} [2022-12-13 14:28:21,195 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 26 predicate places. [2022-12-13 14:28:21,195 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 90 transitions, 527 flow [2022-12-13 14:28:21,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 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) [2022-12-13 14:28:21,196 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:28:21,196 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:28:21,200 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 14:28:21,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 14:28:21,397 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 14:28:21,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:28:21,397 INFO L85 PathProgramCache]: Analyzing trace with hash -521752201, now seen corresponding path program 1 times [2022-12-13 14:28:21,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:28:21,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238776858] [2022-12-13 14:28:21,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:28:21,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:28:21,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:28:21,447 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:28:21,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:28:21,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238776858] [2022-12-13 14:28:21,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238776858] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:28:21,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353709890] [2022-12-13 14:28:21,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:28:21,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:28:21,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:28:21,449 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:28:21,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 14:28:21,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:28:21,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 14:28:21,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:28:21,543 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:28:21,543 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:28:21,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353709890] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:28:21,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:28:21,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-12-13 14:28:21,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178322633] [2022-12-13 14:28:21,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:28:21,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:28:21,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:28:21,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:28:21,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:28:21,555 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 626 [2022-12-13 14:28:21,556 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 90 transitions, 527 flow. Second operand has 4 states, 4 states have (on average 297.25) internal successors, (1189), 4 states have internal predecessors, (1189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:28:21,556 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:28:21,556 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 626 [2022-12-13 14:28:21,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:28:24,176 INFO L130 PetriNetUnfolder]: 23844/36557 cut-off events. [2022-12-13 14:28:24,176 INFO L131 PetriNetUnfolder]: For 33951/34121 co-relation queries the response was YES. [2022-12-13 14:28:24,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94497 conditions, 36557 events. 23844/36557 cut-off events. For 33951/34121 co-relation queries the response was YES. Maximal size of possible extension queue 1186. Compared 276905 event pairs, 1422 based on Foata normal form. 1266/32322 useless extension candidates. Maximal degree in co-relation 94475. Up to 26369 conditions per place. [2022-12-13 14:28:24,396 INFO L137 encePairwiseOnDemand]: 623/626 looper letters, 114 selfloop transitions, 2 changer transitions 0/122 dead transitions. [2022-12-13 14:28:24,396 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 122 transitions, 855 flow [2022-12-13 14:28:24,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 14:28:24,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 14:28:24,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1240 transitions. [2022-12-13 14:28:24,398 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4952076677316294 [2022-12-13 14:28:24,399 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1240 transitions. [2022-12-13 14:28:24,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1240 transitions. [2022-12-13 14:28:24,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:28:24,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1240 transitions. [2022-12-13 14:28:24,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 310.0) internal successors, (1240), 4 states have internal predecessors, (1240), 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) [2022-12-13 14:28:24,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 626.0) internal successors, (3130), 5 states have internal predecessors, (3130), 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) [2022-12-13 14:28:24,403 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 626.0) internal successors, (3130), 5 states have internal predecessors, (3130), 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) [2022-12-13 14:28:24,403 INFO L175 Difference]: Start difference. First operand has 77 places, 90 transitions, 527 flow. Second operand 4 states and 1240 transitions. [2022-12-13 14:28:24,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 122 transitions, 855 flow [2022-12-13 14:28:24,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 122 transitions, 847 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-12-13 14:28:24,620 INFO L231 Difference]: Finished difference. Result has 77 places, 86 transitions, 496 flow [2022-12-13 14:28:24,620 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=626, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=496, PETRI_PLACES=77, PETRI_TRANSITIONS=86} [2022-12-13 14:28:24,620 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 26 predicate places. [2022-12-13 14:28:24,620 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 86 transitions, 496 flow [2022-12-13 14:28:24,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 297.25) internal successors, (1189), 4 states have internal predecessors, (1189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:28:24,620 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:28:24,620 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:28:24,625 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 14:28:24,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-13 14:28:24,822 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 14:28:24,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:28:24,823 INFO L85 PathProgramCache]: Analyzing trace with hash -452706881, now seen corresponding path program 1 times [2022-12-13 14:28:24,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:28:24,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811899538] [2022-12-13 14:28:24,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:28:24,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:28:24,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:28:24,899 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 14:28:24,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:28:24,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811899538] [2022-12-13 14:28:24,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811899538] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:28:24,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355610485] [2022-12-13 14:28:24,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:28:24,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:28:24,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:28:24,901 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:28:24,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 14:28:24,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:28:24,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 14:28:24,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:28:25,032 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 14:28:25,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:28:25,070 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 14:28:25,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355610485] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:28:25,071 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 14:28:25,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 6] total 13 [2022-12-13 14:28:25,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501723744] [2022-12-13 14:28:25,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 14:28:25,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 14:28:25,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:28:25,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 14:28:25,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-12-13 14:28:25,359 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 626 [2022-12-13 14:28:25,360 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 86 transitions, 496 flow. Second operand has 13 states, 13 states have (on average 268.84615384615387) internal successors, (3495), 13 states have internal predecessors, (3495), 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) [2022-12-13 14:28:25,360 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:28:25,360 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 626 [2022-12-13 14:28:25,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:28:28,769 INFO L130 PetriNetUnfolder]: 28208/42553 cut-off events. [2022-12-13 14:28:28,770 INFO L131 PetriNetUnfolder]: For 30983/30983 co-relation queries the response was YES. [2022-12-13 14:28:28,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111827 conditions, 42553 events. 28208/42553 cut-off events. For 30983/30983 co-relation queries the response was YES. Maximal size of possible extension queue 1357. Compared 318878 event pairs, 5017 based on Foata normal form. 388/36824 useless extension candidates. Maximal degree in co-relation 111804. Up to 7895 conditions per place. [2022-12-13 14:28:28,977 INFO L137 encePairwiseOnDemand]: 612/626 looper letters, 267 selfloop transitions, 42 changer transitions 5/319 dead transitions. [2022-12-13 14:28:28,977 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 319 transitions, 2077 flow [2022-12-13 14:28:28,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 14:28:28,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-13 14:28:28,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4503 transitions. [2022-12-13 14:28:28,984 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44958067092651754 [2022-12-13 14:28:28,984 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4503 transitions. [2022-12-13 14:28:28,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4503 transitions. [2022-12-13 14:28:28,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:28:28,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4503 transitions. [2022-12-13 14:28:28,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 281.4375) internal successors, (4503), 16 states have internal predecessors, (4503), 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) [2022-12-13 14:28:28,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 626.0) internal successors, (10642), 17 states have internal predecessors, (10642), 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) [2022-12-13 14:28:29,000 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 626.0) internal successors, (10642), 17 states have internal predecessors, (10642), 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) [2022-12-13 14:28:29,000 INFO L175 Difference]: Start difference. First operand has 77 places, 86 transitions, 496 flow. Second operand 16 states and 4503 transitions. [2022-12-13 14:28:29,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 319 transitions, 2077 flow [2022-12-13 14:28:29,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 319 transitions, 2062 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 14:28:29,139 INFO L231 Difference]: Finished difference. Result has 92 places, 94 transitions, 614 flow [2022-12-13 14:28:29,139 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=626, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=614, PETRI_PLACES=92, PETRI_TRANSITIONS=94} [2022-12-13 14:28:29,139 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 41 predicate places. [2022-12-13 14:28:29,140 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 94 transitions, 614 flow [2022-12-13 14:28:29,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 268.84615384615387) internal successors, (3495), 13 states have internal predecessors, (3495), 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) [2022-12-13 14:28:29,140 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:28:29,140 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:28:29,145 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 14:28:29,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 14:28:29,341 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 14:28:29,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:28:29,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1644535525, now seen corresponding path program 1 times [2022-12-13 14:28:29,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:28:29,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509971704] [2022-12-13 14:28:29,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:28:29,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:28:29,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:28:29,451 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 14:28:29,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:28:29,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509971704] [2022-12-13 14:28:29,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509971704] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:28:29,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742090847] [2022-12-13 14:28:29,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:28:29,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:28:29,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:28:29,453 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:28:29,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 14:28:29,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:28:29,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 14:28:29,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:28:29,579 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 14:28:29,579 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:28:29,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742090847] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:28:29,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:28:29,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2022-12-13 14:28:29,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018137235] [2022-12-13 14:28:29,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:28:29,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:28:29,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:28:29,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:28:29,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-13 14:28:29,601 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 626 [2022-12-13 14:28:29,602 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 94 transitions, 614 flow. Second operand has 4 states, 4 states have (on average 294.25) internal successors, (1177), 4 states have internal predecessors, (1177), 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) [2022-12-13 14:28:29,602 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:28:29,602 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 626 [2022-12-13 14:28:29,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:28:32,053 INFO L130 PetriNetUnfolder]: 19894/32116 cut-off events. [2022-12-13 14:28:32,053 INFO L131 PetriNetUnfolder]: For 30847/31487 co-relation queries the response was YES. [2022-12-13 14:28:32,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88157 conditions, 32116 events. 19894/32116 cut-off events. For 30847/31487 co-relation queries the response was YES. Maximal size of possible extension queue 1010. Compared 250239 event pairs, 12834 based on Foata normal form. 640/29330 useless extension candidates. Maximal degree in co-relation 88131. Up to 22853 conditions per place. [2022-12-13 14:28:32,229 INFO L137 encePairwiseOnDemand]: 622/626 looper letters, 102 selfloop transitions, 5 changer transitions 4/118 dead transitions. [2022-12-13 14:28:32,229 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 118 transitions, 952 flow [2022-12-13 14:28:32,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 14:28:32,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 14:28:32,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1205 transitions. [2022-12-13 14:28:32,232 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4812300319488818 [2022-12-13 14:28:32,232 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1205 transitions. [2022-12-13 14:28:32,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1205 transitions. [2022-12-13 14:28:32,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:28:32,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1205 transitions. [2022-12-13 14:28:32,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 301.25) internal successors, (1205), 4 states have internal predecessors, (1205), 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) [2022-12-13 14:28:32,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 626.0) internal successors, (3130), 5 states have internal predecessors, (3130), 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) [2022-12-13 14:28:32,235 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 626.0) internal successors, (3130), 5 states have internal predecessors, (3130), 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) [2022-12-13 14:28:32,236 INFO L175 Difference]: Start difference. First operand has 92 places, 94 transitions, 614 flow. Second operand 4 states and 1205 transitions. [2022-12-13 14:28:32,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 118 transitions, 952 flow [2022-12-13 14:28:32,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 118 transitions, 886 flow, removed 4 selfloop flow, removed 5 redundant places. [2022-12-13 14:28:32,552 INFO L231 Difference]: Finished difference. Result has 89 places, 91 transitions, 553 flow [2022-12-13 14:28:32,552 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=626, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=553, PETRI_PLACES=89, PETRI_TRANSITIONS=91} [2022-12-13 14:28:32,553 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 38 predicate places. [2022-12-13 14:28:32,553 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 91 transitions, 553 flow [2022-12-13 14:28:32,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 294.25) internal successors, (1177), 4 states have internal predecessors, (1177), 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) [2022-12-13 14:28:32,553 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:28:32,553 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:28:32,558 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 14:28:32,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 14:28:32,754 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 14:28:32,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:28:32,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1596596053, now seen corresponding path program 2 times [2022-12-13 14:28:32,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:28:32,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478518466] [2022-12-13 14:28:32,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:28:32,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:28:32,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:28:32,857 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:28:32,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:28:32,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478518466] [2022-12-13 14:28:32,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478518466] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:28:32,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443533317] [2022-12-13 14:28:32,857 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 14:28:32,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:28:32,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:28:32,858 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:28:32,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 14:28:32,953 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 14:28:32,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:28:32,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 14:28:32,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:28:32,985 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-13 14:28:32,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:28:33,015 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-13 14:28:33,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443533317] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:28:33,015 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 14:28:33,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 2, 2] total 8 [2022-12-13 14:28:33,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616498213] [2022-12-13 14:28:33,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 14:28:33,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 14:28:33,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:28:33,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 14:28:33,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-12-13 14:28:33,058 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 626 [2022-12-13 14:28:33,060 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 91 transitions, 553 flow. Second operand has 9 states, 9 states have (on average 293.55555555555554) internal successors, (2642), 9 states have internal predecessors, (2642), 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) [2022-12-13 14:28:33,060 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:28:33,060 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 626 [2022-12-13 14:28:33,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:28:36,699 INFO L130 PetriNetUnfolder]: 27494/42118 cut-off events. [2022-12-13 14:28:36,699 INFO L131 PetriNetUnfolder]: For 58184/59017 co-relation queries the response was YES. [2022-12-13 14:28:36,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118843 conditions, 42118 events. 27494/42118 cut-off events. For 58184/59017 co-relation queries the response was YES. Maximal size of possible extension queue 1126. Compared 315723 event pairs, 2724 based on Foata normal form. 1897/39549 useless extension candidates. Maximal degree in co-relation 118817. Up to 6048 conditions per place. [2022-12-13 14:28:36,897 INFO L137 encePairwiseOnDemand]: 621/626 looper letters, 123 selfloop transitions, 9 changer transitions 98/235 dead transitions. [2022-12-13 14:28:36,897 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 235 transitions, 1647 flow [2022-12-13 14:28:36,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 14:28:36,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 14:28:36,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2729 transitions. [2022-12-13 14:28:36,903 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48438054668086616 [2022-12-13 14:28:36,903 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2729 transitions. [2022-12-13 14:28:36,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2729 transitions. [2022-12-13 14:28:36,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:28:36,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2729 transitions. [2022-12-13 14:28:36,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 303.22222222222223) internal successors, (2729), 9 states have internal predecessors, (2729), 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) [2022-12-13 14:28:36,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 626.0) internal successors, (6260), 10 states have internal predecessors, (6260), 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) [2022-12-13 14:28:36,913 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 626.0) internal successors, (6260), 10 states have internal predecessors, (6260), 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) [2022-12-13 14:28:36,913 INFO L175 Difference]: Start difference. First operand has 89 places, 91 transitions, 553 flow. Second operand 9 states and 2729 transitions. [2022-12-13 14:28:36,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 235 transitions, 1647 flow [2022-12-13 14:28:37,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 235 transitions, 1577 flow, removed 2 selfloop flow, removed 7 redundant places. [2022-12-13 14:28:37,132 INFO L231 Difference]: Finished difference. Result has 88 places, 60 transitions, 346 flow [2022-12-13 14:28:37,132 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=626, PETRI_DIFFERENCE_MINUEND_FLOW=523, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=346, PETRI_PLACES=88, PETRI_TRANSITIONS=60} [2022-12-13 14:28:37,132 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 37 predicate places. [2022-12-13 14:28:37,132 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 60 transitions, 346 flow [2022-12-13 14:28:37,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 293.55555555555554) internal successors, (2642), 9 states have internal predecessors, (2642), 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) [2022-12-13 14:28:37,133 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:28:37,133 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:28:37,137 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 14:28:37,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 14:28:37,334 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 14:28:37,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:28:37,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1181458364, now seen corresponding path program 2 times [2022-12-13 14:28:37,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:28:37,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580459226] [2022-12-13 14:28:37,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:28:37,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:28:37,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:28:37,479 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 14:28:37,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:28:37,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580459226] [2022-12-13 14:28:37,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580459226] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:28:37,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237921603] [2022-12-13 14:28:37,479 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 14:28:37,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:28:37,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:28:37,481 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:28:37,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 14:28:37,583 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 14:28:37,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:28:37,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 14:28:37,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:28:37,617 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-12-13 14:28:37,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:28:37,648 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-12-13 14:28:37,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237921603] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:28:37,649 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 14:28:37,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 2, 2] total 8 [2022-12-13 14:28:37,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495128588] [2022-12-13 14:28:37,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 14:28:37,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 14:28:37,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:28:37,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 14:28:37,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-12-13 14:28:37,863 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 626 [2022-12-13 14:28:37,865 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 60 transitions, 346 flow. Second operand has 10 states, 10 states have (on average 269.3) internal successors, (2693), 10 states have internal predecessors, (2693), 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) [2022-12-13 14:28:37,865 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:28:37,865 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 626 [2022-12-13 14:28:37,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:28:40,278 INFO L130 PetriNetUnfolder]: 18965/29506 cut-off events. [2022-12-13 14:28:40,278 INFO L131 PetriNetUnfolder]: For 28535/28885 co-relation queries the response was YES. [2022-12-13 14:28:40,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84459 conditions, 29506 events. 18965/29506 cut-off events. For 28535/28885 co-relation queries the response was YES. Maximal size of possible extension queue 777. Compared 213166 event pairs, 1790 based on Foata normal form. 350/29748 useless extension candidates. Maximal degree in co-relation 84436. Up to 8676 conditions per place. [2022-12-13 14:28:40,350 INFO L137 encePairwiseOnDemand]: 613/626 looper letters, 0 selfloop transitions, 0 changer transitions 194/194 dead transitions. [2022-12-13 14:28:40,350 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 194 transitions, 1360 flow [2022-12-13 14:28:40,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 14:28:40,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-13 14:28:40,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3854 transitions. [2022-12-13 14:28:40,355 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43975353719762666 [2022-12-13 14:28:40,355 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3854 transitions. [2022-12-13 14:28:40,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3854 transitions. [2022-12-13 14:28:40,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:28:40,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3854 transitions. [2022-12-13 14:28:40,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 275.2857142857143) internal successors, (3854), 14 states have internal predecessors, (3854), 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) [2022-12-13 14:28:40,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 626.0) internal successors, (9390), 15 states have internal predecessors, (9390), 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) [2022-12-13 14:28:40,365 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 626.0) internal successors, (9390), 15 states have internal predecessors, (9390), 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) [2022-12-13 14:28:40,366 INFO L175 Difference]: Start difference. First operand has 88 places, 60 transitions, 346 flow. Second operand 14 states and 3854 transitions. [2022-12-13 14:28:40,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 194 transitions, 1360 flow [2022-12-13 14:28:40,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 194 transitions, 1108 flow, removed 40 selfloop flow, removed 15 redundant places. [2022-12-13 14:28:40,838 INFO L231 Difference]: Finished difference. Result has 64 places, 0 transitions, 0 flow [2022-12-13 14:28:40,838 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=626, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=0, PETRI_PLACES=64, PETRI_TRANSITIONS=0} [2022-12-13 14:28:40,838 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 13 predicate places. [2022-12-13 14:28:40,838 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 0 transitions, 0 flow [2022-12-13 14:28:40,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 269.3) internal successors, (2693), 10 states have internal predecessors, (2693), 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) [2022-12-13 14:28:40,840 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 23 remaining) [2022-12-13 14:28:40,840 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 23 remaining) [2022-12-13 14:28:40,840 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 23 remaining) [2022-12-13 14:28:40,841 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 23 remaining) [2022-12-13 14:28:40,841 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 23 remaining) [2022-12-13 14:28:40,841 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 23 remaining) [2022-12-13 14:28:40,841 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 23 remaining) [2022-12-13 14:28:40,841 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 23 remaining) [2022-12-13 14:28:40,841 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 23 remaining) [2022-12-13 14:28:40,841 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 23 remaining) [2022-12-13 14:28:40,841 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 23 remaining) [2022-12-13 14:28:40,841 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 23 remaining) [2022-12-13 14:28:40,841 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 23 remaining) [2022-12-13 14:28:40,841 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 23 remaining) [2022-12-13 14:28:40,841 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 23 remaining) [2022-12-13 14:28:40,841 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 23 remaining) [2022-12-13 14:28:40,841 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 23 remaining) [2022-12-13 14:28:40,841 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 23 remaining) [2022-12-13 14:28:40,841 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 23 remaining) [2022-12-13 14:28:40,842 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 23 remaining) [2022-12-13 14:28:40,842 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 23 remaining) [2022-12-13 14:28:40,842 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 23 remaining) [2022-12-13 14:28:40,842 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 23 remaining) [2022-12-13 14:28:40,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-12-13 14:28:41,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:28:41,043 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:28:41,054 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 14:28:41,054 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 14:28:41,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 02:28:41 BasicIcfg [2022-12-13 14:28:41,057 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 14:28:41,057 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 14:28:41,057 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 14:28:41,058 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 14:28:41,058 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:27:50" (3/4) ... [2022-12-13 14:28:41,060 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 14:28:41,065 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-12-13 14:28:41,065 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-12-13 14:28:41,065 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-12-13 14:28:41,070 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 37 nodes and edges [2022-12-13 14:28:41,070 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 14:28:41,070 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 14:28:41,070 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 14:28:41,104 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 14:28:41,104 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 14:28:41,104 INFO L158 Benchmark]: Toolchain (without parser) took 51032.59ms. Allocated memory was 134.2MB in the beginning and 3.4GB in the end (delta: 3.2GB). Free memory was 99.5MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. [2022-12-13 14:28:41,105 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 134.2MB. Free memory is still 76.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 14:28:41,105 INFO L158 Benchmark]: CACSL2BoogieTranslator took 180.49ms. Allocated memory is still 134.2MB. Free memory was 99.5MB in the beginning and 87.5MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 14:28:41,105 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.84ms. Allocated memory is still 134.2MB. Free memory was 87.5MB in the beginning and 85.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 14:28:41,105 INFO L158 Benchmark]: Boogie Preprocessor took 23.49ms. Allocated memory is still 134.2MB. Free memory was 85.4MB in the beginning and 83.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 14:28:41,106 INFO L158 Benchmark]: RCFGBuilder took 455.90ms. Allocated memory was 134.2MB in the beginning and 205.5MB in the end (delta: 71.3MB). Free memory was 83.3MB in the beginning and 176.0MB in the end (delta: -92.7MB). Peak memory consumption was 29.0MB. Max. memory is 16.1GB. [2022-12-13 14:28:41,106 INFO L158 Benchmark]: TraceAbstraction took 50292.47ms. Allocated memory was 205.5MB in the beginning and 3.4GB in the end (delta: 3.2GB). Free memory was 175.3MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 2.3GB. Max. memory is 16.1GB. [2022-12-13 14:28:41,106 INFO L158 Benchmark]: Witness Printer took 46.58ms. Allocated memory is still 3.4GB. Free memory was 1.8GB in the beginning and 1.8GB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 14:28:41,107 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 134.2MB. Free memory is still 76.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 180.49ms. Allocated memory is still 134.2MB. Free memory was 99.5MB in the beginning and 87.5MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.84ms. Allocated memory is still 134.2MB. Free memory was 87.5MB in the beginning and 85.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.49ms. Allocated memory is still 134.2MB. Free memory was 85.4MB in the beginning and 83.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 455.90ms. Allocated memory was 134.2MB in the beginning and 205.5MB in the end (delta: 71.3MB). Free memory was 83.3MB in the beginning and 176.0MB in the end (delta: -92.7MB). Peak memory consumption was 29.0MB. Max. memory is 16.1GB. * TraceAbstraction took 50292.47ms. Allocated memory was 205.5MB in the beginning and 3.4GB in the end (delta: 3.2GB). Free memory was 175.3MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 2.3GB. Max. memory is 16.1GB. * Witness Printer took 46.58ms. Allocated memory is still 3.4GB. Free memory was 1.8GB in the beginning and 1.8GB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.9s, 269 PlacesBefore, 51 PlacesAfterwards, 282 TransitionsBefore, 48 TransitionsAfterwards, 3240 CoEnabledTransitionPairs, 8 FixpointIterations, 188 TrivialSequentialCompositions, 51 ConcurrentSequentialCompositions, 44 TrivialYvCompositions, 6 ConcurrentYvCompositions, 16 ChoiceCompositions, 305 TotalNumberOfCompositions, 7533 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3279, independent: 3062, independent conditional: 0, independent unconditional: 3062, dependent: 217, dependent conditional: 0, dependent unconditional: 217, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1652, independent: 1605, independent conditional: 0, independent unconditional: 1605, dependent: 47, dependent conditional: 0, dependent unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3279, independent: 1457, independent conditional: 0, independent unconditional: 1457, dependent: 170, dependent conditional: 0, dependent unconditional: 170, unknown: 1652, unknown conditional: 0, unknown unconditional: 1652] , Statistics on independence cache: Total cache size (in pairs): 113, Positive cache size: 95, Positive conditional cache size: 0, Positive unconditional cache size: 95, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 66]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 66]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: 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, 351 locations, 23 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: 50.2s, OverallIterations: 19, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 37.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5049 SdHoareTripleChecker+Valid, 3.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4168 mSDsluCounter, 1330 SdHoareTripleChecker+Invalid, 3.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1150 mSDsCounter, 522 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6567 IncrementalHoareTripleChecker+Invalid, 7089 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 522 mSolverCounterUnsat, 180 mSDtfsCounter, 6567 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 331 GetRequests, 198 SyntacticMatches, 5 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=614occurred in iteration=16, InterpolantAutomatonStates: 113, 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: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 384 NumberOfCodeBlocks, 348 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 438 ConstructedInterpolants, 0 QuantifiedInterpolants, 1262 SizeOfPredicates, 18 NumberOfNonLiveVariables, 2491 ConjunctsInSsa, 65 ConjunctsInUnsatCore, 37 InterpolantComputations, 13 PerfectInterpolantSequences, 189/304 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 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 14:28:41,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8595ac05-b0bb-443f-b969-894b66e2c70d/bin/uautomizer-uyxdKDjOR8/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