./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 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/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_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 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-6b4ec56 [2022-11-20 11:45:58,694 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:45:58,697 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:45:58,728 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:45:58,731 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:45:58,735 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:45:58,738 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:45:58,741 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:45:58,744 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:45:58,747 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:45:58,748 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:45:58,749 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:45:58,749 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:45:58,750 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:45:58,754 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:45:58,756 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:45:58,756 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:45:58,757 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:45:58,759 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:45:58,760 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:45:58,762 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:45:58,767 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:45:58,768 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:45:58,769 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:45:58,772 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:45:58,772 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:45:58,773 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:45:58,774 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:45:58,774 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:45:58,775 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:45:58,775 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:45:58,776 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:45:58,777 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:45:58,778 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:45:58,788 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:45:58,788 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:45:58,789 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:45:58,789 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:45:58,790 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:45:58,791 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:45:58,792 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:45:58,794 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 11:45:58,837 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:45:58,837 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:45:58,838 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:45:58,838 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:45:58,839 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:45:58,839 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:45:58,840 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:45:58,840 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:45:58,840 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:45:58,841 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:45:58,842 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:45:58,842 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:45:58,842 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:45:58,843 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:45:58,843 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:45:58,843 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:45:58,843 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:45:58,843 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:45:58,844 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 11:45:58,844 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:45:58,844 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:45:58,844 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:45:58,844 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:45:58,845 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:45:58,845 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:45:58,845 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:45:58,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:45:58,846 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:45:58,846 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:45:58,846 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:45:58,846 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:45:58,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:45:58,847 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:45:58,847 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:45:58,847 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:45:58,847 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f91e7b856fd6bf43c568f48d1703ed519fbb708e5c1360b96f8534e6fa4ed35d [2022-11-20 11:45:59,112 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:45:59,144 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:45:59,146 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:45:59,148 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:45:59,148 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:45:59,150 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2022-11-20 11:46:02,250 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:46:02,449 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:46:02,450 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2022-11-20 11:46:02,459 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/data/a2ccb0d6b/d34f819cbe34484e8c5c6d7da9eeb765/FLAG1c2d2a857 [2022-11-20 11:46:02,477 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/data/a2ccb0d6b/d34f819cbe34484e8c5c6d7da9eeb765 [2022-11-20 11:46:02,480 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:46:02,482 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:46:02,484 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:46:02,484 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:46:02,491 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:46:02,492 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:46:02" (1/1) ... [2022-11-20 11:46:02,493 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ad8ba97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:02, skipping insertion in model container [2022-11-20 11:46:02,494 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:46:02" (1/1) ... [2022-11-20 11:46:02,503 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:46:02,524 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:46:02,723 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_6cc844be-08e0-47d6-81b0-74a3a5499b81/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c[2598,2611] [2022-11-20 11:46:02,729 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:46:02,739 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:46:02,770 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_6cc844be-08e0-47d6-81b0-74a3a5499b81/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c[2598,2611] [2022-11-20 11:46:02,779 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:46:02,794 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:46:02,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:02 WrapperNode [2022-11-20 11:46:02,794 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:46:02,795 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:46:02,796 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:46:02,796 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:46:02,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:02" (1/1) ... [2022-11-20 11:46:02,813 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:02" (1/1) ... [2022-11-20 11:46:02,843 INFO L138 Inliner]: procedures = 25, calls = 46, calls flagged for inlining = 11, calls inlined = 17, statements flattened = 201 [2022-11-20 11:46:02,843 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:46:02,844 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:46:02,844 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:46:02,844 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:46:02,855 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:02" (1/1) ... [2022-11-20 11:46:02,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:02" (1/1) ... [2022-11-20 11:46:02,859 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:02" (1/1) ... [2022-11-20 11:46:02,860 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:02" (1/1) ... [2022-11-20 11:46:02,870 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:02" (1/1) ... [2022-11-20 11:46:02,876 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:02" (1/1) ... [2022-11-20 11:46:02,878 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:02" (1/1) ... [2022-11-20 11:46:02,880 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:02" (1/1) ... [2022-11-20 11:46:02,883 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:46:02,885 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:46:02,885 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:46:02,885 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:46:02,886 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:02" (1/1) ... [2022-11-20 11:46:02,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:46:02,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:46:02,920 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:46:02,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:46:02,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:46:02,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:46:02,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:46:02,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:46:02,972 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 11:46:02,973 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 11:46:02,973 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 11:46:02,973 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 11:46:02,973 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 11:46:02,973 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 11:46:02,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:46:02,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 11:46:02,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:46:02,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:46:02,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:46:02,976 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 11:46:03,079 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:46:03,081 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:46:03,750 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:46:03,765 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:46:03,772 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-11-20 11:46:03,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:46:03 BoogieIcfgContainer [2022-11-20 11:46:03,777 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:46:03,782 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:46:03,782 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:46:03,786 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:46:03,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:46:02" (1/3) ... [2022-11-20 11:46:03,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7630b5b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:46:03, skipping insertion in model container [2022-11-20 11:46:03,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:02" (2/3) ... [2022-11-20 11:46:03,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7630b5b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:46:03, skipping insertion in model container [2022-11-20 11:46:03,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:46:03" (3/3) ... [2022-11-20 11:46:03,792 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-vector-add.wvr.c [2022-11-20 11:46:03,807 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:46:03,819 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:46:03,819 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-11-20 11:46:03,820 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:46:03,950 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 11:46:03,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 306 places, 321 transitions, 666 flow [2022-11-20 11:46:04,128 INFO L130 PetriNetUnfolder]: 25/318 cut-off events. [2022-11-20 11:46:04,128 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 11:46:04,135 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 263 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. [2022-11-20 11:46:04,135 INFO L82 GeneralOperation]: Start removeDead. Operand has 306 places, 321 transitions, 666 flow [2022-11-20 11:46:04,142 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 269 places, 282 transitions, 579 flow [2022-11-20 11:46:04,153 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:46:04,160 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;@68a4d4fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:46:04,160 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2022-11-20 11:46:04,177 INFO L130 PetriNetUnfolder]: 3/61 cut-off events. [2022-11-20 11:46:04,177 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:46:04,177 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:46:04,178 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:46:04,178 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 11:46:04,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:46:04,184 INFO L85 PathProgramCache]: Analyzing trace with hash -507091820, now seen corresponding path program 1 times [2022-11-20 11:46:04,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:46:04,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951767104] [2022-11-20 11:46:04,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:46:04,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:46:04,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:04,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:46:04,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:46:04,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951767104] [2022-11-20 11:46:04,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951767104] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:46:04,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:46:04,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:46:04,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883077320] [2022-11-20 11:46:04,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:46:04,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:46:04,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:46:04,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:46:04,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:46:04,848 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 321 [2022-11-20 11:46:04,857 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 282 transitions, 579 flow. Second operand has 4 states, 4 states have (on average 249.5) internal successors, (998), 4 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:04,857 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:46:04,857 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 321 [2022-11-20 11:46:04,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:46:05,334 INFO L130 PetriNetUnfolder]: 13/417 cut-off events. [2022-11-20 11:46:05,334 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-11-20 11:46:05,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 531 conditions, 417 events. 13/417 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 877 event pairs, 0 based on Foata normal form. 28/401 useless extension candidates. Maximal degree in co-relation 458. Up to 57 conditions per place. [2022-11-20 11:46:05,339 INFO L137 encePairwiseOnDemand]: 278/321 looper letters, 74 selfloop transitions, 19 changer transitions 9/306 dead transitions. [2022-11-20 11:46:05,340 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 306 transitions, 828 flow [2022-11-20 11:46:05,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:46:05,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:46:05,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1365 transitions. [2022-11-20 11:46:05,370 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8504672897196262 [2022-11-20 11:46:05,371 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1365 transitions. [2022-11-20 11:46:05,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1365 transitions. [2022-11-20 11:46:05,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:46:05,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1365 transitions. [2022-11-20 11:46:05,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 273.0) internal successors, (1365), 5 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:05,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 321.0) internal successors, (1926), 6 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:05,402 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 321.0) internal successors, (1926), 6 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:05,404 INFO L175 Difference]: Start difference. First operand has 269 places, 282 transitions, 579 flow. Second operand 5 states and 1365 transitions. [2022-11-20 11:46:05,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 306 transitions, 828 flow [2022-11-20 11:46:05,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 306 transitions, 810 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 11:46:05,418 INFO L231 Difference]: Finished difference. Result has 271 places, 272 transitions, 661 flow [2022-11-20 11:46:05,421 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=661, PETRI_PLACES=271, PETRI_TRANSITIONS=272} [2022-11-20 11:46:05,428 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 2 predicate places. [2022-11-20 11:46:05,428 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 272 transitions, 661 flow [2022-11-20 11:46:05,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 249.5) internal successors, (998), 4 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:05,429 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:46:05,430 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:46:05,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:46:05,430 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 11:46:05,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:46:05,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1782756961, now seen corresponding path program 1 times [2022-11-20 11:46:05,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:46:05,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725348176] [2022-11-20 11:46:05,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:46:05,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:46:05,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:05,670 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:46:05,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:46:05,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725348176] [2022-11-20 11:46:05,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725348176] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:46:05,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302049800] [2022-11-20 11:46:05,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:46:05,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:46:05,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:46:05,683 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:46:05,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:46:05,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:05,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:46:05,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:46:05,894 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:46:05,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:46:05,982 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:46:05,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302049800] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:46:05,982 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:46:05,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-20 11:46:05,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173056566] [2022-11-20 11:46:05,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:46:05,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:46:05,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:46:05,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:46:05,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:46:05,990 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 321 [2022-11-20 11:46:06,000 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 272 transitions, 661 flow. Second operand has 12 states, 12 states have (on average 250.66666666666666) internal successors, (3008), 12 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:06,000 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:46:06,000 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 321 [2022-11-20 11:46:06,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:46:06,747 INFO L130 PetriNetUnfolder]: 31/865 cut-off events. [2022-11-20 11:46:06,748 INFO L131 PetriNetUnfolder]: For 69/69 co-relation queries the response was YES. [2022-11-20 11:46:06,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1222 conditions, 865 events. 31/865 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 3386 event pairs, 0 based on Foata normal form. 12/812 useless extension candidates. Maximal degree in co-relation 476. Up to 46 conditions per place. [2022-11-20 11:46:06,756 INFO L137 encePairwiseOnDemand]: 290/321 looper letters, 137 selfloop transitions, 84 changer transitions 0/425 dead transitions. [2022-11-20 11:46:06,757 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 425 transitions, 1539 flow [2022-11-20 11:46:06,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 11:46:06,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 11:46:06,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4697 transitions. [2022-11-20 11:46:06,766 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8129110418830044 [2022-11-20 11:46:06,766 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4697 transitions. [2022-11-20 11:46:06,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4697 transitions. [2022-11-20 11:46:06,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:46:06,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4697 transitions. [2022-11-20 11:46:06,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 260.94444444444446) internal successors, (4697), 18 states have internal predecessors, (4697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:06,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 321.0) internal successors, (6099), 19 states have internal predecessors, (6099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:06,793 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 321.0) internal successors, (6099), 19 states have internal predecessors, (6099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:06,793 INFO L175 Difference]: Start difference. First operand has 271 places, 272 transitions, 661 flow. Second operand 18 states and 4697 transitions. [2022-11-20 11:46:06,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 425 transitions, 1539 flow [2022-11-20 11:46:06,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 425 transitions, 1528 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:46:06,809 INFO L231 Difference]: Finished difference. Result has 282 places, 329 transitions, 1152 flow [2022-11-20 11:46:06,809 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1152, PETRI_PLACES=282, PETRI_TRANSITIONS=329} [2022-11-20 11:46:06,810 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 13 predicate places. [2022-11-20 11:46:06,810 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 329 transitions, 1152 flow [2022-11-20 11:46:06,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 250.66666666666666) internal successors, (3008), 12 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:06,813 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:46:06,814 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:46:06,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:46:07,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:46:07,025 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 11:46:07,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:46:07,025 INFO L85 PathProgramCache]: Analyzing trace with hash -569108358, now seen corresponding path program 1 times [2022-11-20 11:46:07,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:46:07,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533958413] [2022-11-20 11:46:07,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:46:07,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:46:07,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:07,161 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:46:07,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:46:07,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533958413] [2022-11-20 11:46:07,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533958413] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:46:07,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349588358] [2022-11-20 11:46:07,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:46:07,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:46:07,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:46:07,166 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:46:07,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:46:07,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:07,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:46:07,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:46:07,334 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:46:07,334 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:46:07,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349588358] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:46:07,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:46:07,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 11:46:07,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419060007] [2022-11-20 11:46:07,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:46:07,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:46:07,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:46:07,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:46:07,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:46:07,344 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 321 [2022-11-20 11:46:07,345 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 329 transitions, 1152 flow. Second operand has 6 states, 6 states have (on average 250.33333333333334) internal successors, (1502), 6 states have internal predecessors, (1502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:07,345 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:46:07,346 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 321 [2022-11-20 11:46:07,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:46:07,714 INFO L130 PetriNetUnfolder]: 31/849 cut-off events. [2022-11-20 11:46:07,714 INFO L131 PetriNetUnfolder]: For 279/279 co-relation queries the response was YES. [2022-11-20 11:46:07,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1297 conditions, 849 events. 31/849 cut-off events. For 279/279 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 3263 event pairs, 0 based on Foata normal form. 16/800 useless extension candidates. Maximal degree in co-relation 976. Up to 84 conditions per place. [2022-11-20 11:46:07,720 INFO L137 encePairwiseOnDemand]: 298/321 looper letters, 75 selfloop transitions, 59 changer transitions 0/338 dead transitions. [2022-11-20 11:46:07,721 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 338 transitions, 1376 flow [2022-11-20 11:46:07,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:46:07,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:46:07,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1829 transitions. [2022-11-20 11:46:07,726 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8139741878059635 [2022-11-20 11:46:07,726 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1829 transitions. [2022-11-20 11:46:07,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1829 transitions. [2022-11-20 11:46:07,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:46:07,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1829 transitions. [2022-11-20 11:46:07,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 261.2857142857143) internal successors, (1829), 7 states have internal predecessors, (1829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:07,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:07,738 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:07,738 INFO L175 Difference]: Start difference. First operand has 282 places, 329 transitions, 1152 flow. Second operand 7 states and 1829 transitions. [2022-11-20 11:46:07,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 338 transitions, 1376 flow [2022-11-20 11:46:07,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 338 transitions, 1218 flow, removed 56 selfloop flow, removed 5 redundant places. [2022-11-20 11:46:07,751 INFO L231 Difference]: Finished difference. Result has 275 places, 313 transitions, 1004 flow [2022-11-20 11:46:07,752 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=886, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1004, PETRI_PLACES=275, PETRI_TRANSITIONS=313} [2022-11-20 11:46:07,753 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 6 predicate places. [2022-11-20 11:46:07,753 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 313 transitions, 1004 flow [2022-11-20 11:46:07,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 250.33333333333334) internal successors, (1502), 6 states have internal predecessors, (1502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:07,754 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:46:07,754 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:46:07,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:46:07,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:46:07,960 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 11:46:07,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:46:07,960 INFO L85 PathProgramCache]: Analyzing trace with hash 2012413384, now seen corresponding path program 2 times [2022-11-20 11:46:07,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:46:07,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114196710] [2022-11-20 11:46:07,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:46:07,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:46:07,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:08,206 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:46:08,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:46:08,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114196710] [2022-11-20 11:46:08,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114196710] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:46:08,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3500934] [2022-11-20 11:46:08,207 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:46:08,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:46:08,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:46:08,211 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:46:08,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:46:08,311 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:46:08,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:46:08,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 11:46:08,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:46:08,481 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-20 11:46:08,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:46:08,632 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-20 11:46:08,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3500934] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:46:08,633 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:46:08,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-20 11:46:08,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924197637] [2022-11-20 11:46:08,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:46:08,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:46:08,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:46:08,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:46:08,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:46:08,641 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 321 [2022-11-20 11:46:08,645 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 313 transitions, 1004 flow. Second operand has 18 states, 18 states have (on average 220.61111111111111) internal successors, (3971), 18 states have internal predecessors, (3971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:08,645 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:46:08,646 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 321 [2022-11-20 11:46:08,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:46:10,032 INFO L130 PetriNetUnfolder]: 183/1793 cut-off events. [2022-11-20 11:46:10,032 INFO L131 PetriNetUnfolder]: For 337/337 co-relation queries the response was YES. [2022-11-20 11:46:10,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2660 conditions, 1793 events. 183/1793 cut-off events. For 337/337 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 10603 event pairs, 84 based on Foata normal form. 8/1542 useless extension candidates. Maximal degree in co-relation 1554. Up to 69 conditions per place. [2022-11-20 11:46:10,050 INFO L137 encePairwiseOnDemand]: 286/321 looper letters, 230 selfloop transitions, 109 changer transitions 0/513 dead transitions. [2022-11-20 11:46:10,050 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 513 transitions, 2210 flow [2022-11-20 11:46:10,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 11:46:10,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-20 11:46:10,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5555 transitions. [2022-11-20 11:46:10,090 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7210539979231568 [2022-11-20 11:46:10,090 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5555 transitions. [2022-11-20 11:46:10,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5555 transitions. [2022-11-20 11:46:10,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:46:10,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5555 transitions. [2022-11-20 11:46:10,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 231.45833333333334) internal successors, (5555), 24 states have internal predecessors, (5555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:10,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 321.0) internal successors, (8025), 25 states have internal predecessors, (8025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:10,124 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 321.0) internal successors, (8025), 25 states have internal predecessors, (8025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:10,125 INFO L175 Difference]: Start difference. First operand has 275 places, 313 transitions, 1004 flow. Second operand 24 states and 5555 transitions. [2022-11-20 11:46:10,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 513 transitions, 2210 flow [2022-11-20 11:46:10,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 513 transitions, 2086 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-20 11:46:10,143 INFO L231 Difference]: Finished difference. Result has 286 places, 335 transitions, 1225 flow [2022-11-20 11:46:10,144 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1225, PETRI_PLACES=286, PETRI_TRANSITIONS=335} [2022-11-20 11:46:10,145 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 17 predicate places. [2022-11-20 11:46:10,145 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 335 transitions, 1225 flow [2022-11-20 11:46:10,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 220.61111111111111) internal successors, (3971), 18 states have internal predecessors, (3971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:10,162 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:46:10,163 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:46:10,173 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-20 11:46:10,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:46:10,368 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 11:46:10,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:46:10,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1654364910, now seen corresponding path program 1 times [2022-11-20 11:46:10,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:46:10,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766349832] [2022-11-20 11:46:10,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:46:10,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:46:10,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:10,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:46:10,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:46:10,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766349832] [2022-11-20 11:46:10,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766349832] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:46:10,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:46:10,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:46:10,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304897068] [2022-11-20 11:46:10,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:46:10,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:46:10,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:46:10,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:46:10,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:46:10,511 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 321 [2022-11-20 11:46:10,512 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 335 transitions, 1225 flow. Second operand has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:10,513 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:46:10,513 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 321 [2022-11-20 11:46:10,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:46:11,059 INFO L130 PetriNetUnfolder]: 386/2437 cut-off events. [2022-11-20 11:46:11,059 INFO L131 PetriNetUnfolder]: For 215/264 co-relation queries the response was YES. [2022-11-20 11:46:11,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4073 conditions, 2437 events. 386/2437 cut-off events. For 215/264 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 17985 event pairs, 147 based on Foata normal form. 0/2185 useless extension candidates. Maximal degree in co-relation 911. Up to 477 conditions per place. [2022-11-20 11:46:11,080 INFO L137 encePairwiseOnDemand]: 315/321 looper letters, 32 selfloop transitions, 4 changer transitions 0/353 dead transitions. [2022-11-20 11:46:11,081 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 353 transitions, 1344 flow [2022-11-20 11:46:11,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:46:11,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:46:11,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1453 transitions. [2022-11-20 11:46:11,084 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9052959501557633 [2022-11-20 11:46:11,084 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1453 transitions. [2022-11-20 11:46:11,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1453 transitions. [2022-11-20 11:46:11,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:46:11,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1453 transitions. [2022-11-20 11:46:11,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 290.6) internal successors, (1453), 5 states have internal predecessors, (1453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:11,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 321.0) internal successors, (1926), 6 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:11,092 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 321.0) internal successors, (1926), 6 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:11,092 INFO L175 Difference]: Start difference. First operand has 286 places, 335 transitions, 1225 flow. Second operand 5 states and 1453 transitions. [2022-11-20 11:46:11,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 353 transitions, 1344 flow [2022-11-20 11:46:11,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 353 transitions, 1177 flow, removed 17 selfloop flow, removed 15 redundant places. [2022-11-20 11:46:11,100 INFO L231 Difference]: Finished difference. Result has 278 places, 338 transitions, 1088 flow [2022-11-20 11:46:11,101 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=1058, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1088, PETRI_PLACES=278, PETRI_TRANSITIONS=338} [2022-11-20 11:46:11,101 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 9 predicate places. [2022-11-20 11:46:11,101 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 338 transitions, 1088 flow [2022-11-20 11:46:11,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:11,102 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:46:11,102 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:46:11,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:46:11,103 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 11:46:11,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:46:11,103 INFO L85 PathProgramCache]: Analyzing trace with hash -937527496, now seen corresponding path program 1 times [2022-11-20 11:46:11,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:46:11,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625350529] [2022-11-20 11:46:11,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:46:11,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:46:11,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:11,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:46:11,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:46:11,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625350529] [2022-11-20 11:46:11,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625350529] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:46:11,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:46:11,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:46:11,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173630599] [2022-11-20 11:46:11,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:46:11,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:46:11,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:46:11,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:46:11,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:46:11,240 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 321 [2022-11-20 11:46:11,241 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 338 transitions, 1088 flow. Second operand has 4 states, 4 states have (on average 285.25) internal successors, (1141), 4 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:11,242 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:46:11,242 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 321 [2022-11-20 11:46:11,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:46:11,947 INFO L130 PetriNetUnfolder]: 526/2514 cut-off events. [2022-11-20 11:46:11,947 INFO L131 PetriNetUnfolder]: For 446/446 co-relation queries the response was YES. [2022-11-20 11:46:11,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4326 conditions, 2514 events. 526/2514 cut-off events. For 446/446 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 20614 event pairs, 252 based on Foata normal form. 0/2157 useless extension candidates. Maximal degree in co-relation 3359. Up to 666 conditions per place. [2022-11-20 11:46:11,982 INFO L137 encePairwiseOnDemand]: 315/321 looper letters, 31 selfloop transitions, 4 changer transitions 0/355 dead transitions. [2022-11-20 11:46:11,982 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 355 transitions, 1202 flow [2022-11-20 11:46:11,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:46:11,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:46:11,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1452 transitions. [2022-11-20 11:46:11,986 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9046728971962616 [2022-11-20 11:46:11,986 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1452 transitions. [2022-11-20 11:46:11,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1452 transitions. [2022-11-20 11:46:11,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:46:11,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1452 transitions. [2022-11-20 11:46:11,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 290.4) internal successors, (1452), 5 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:11,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 321.0) internal successors, (1926), 6 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:11,993 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 321.0) internal successors, (1926), 6 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:11,993 INFO L175 Difference]: Start difference. First operand has 278 places, 338 transitions, 1088 flow. Second operand 5 states and 1452 transitions. [2022-11-20 11:46:11,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 355 transitions, 1202 flow [2022-11-20 11:46:11,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 355 transitions, 1200 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:46:12,001 INFO L231 Difference]: Finished difference. Result has 284 places, 341 transitions, 1116 flow [2022-11-20 11:46:12,002 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=1086, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1116, PETRI_PLACES=284, PETRI_TRANSITIONS=341} [2022-11-20 11:46:12,004 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 15 predicate places. [2022-11-20 11:46:12,005 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 341 transitions, 1116 flow [2022-11-20 11:46:12,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 285.25) internal successors, (1141), 4 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:12,005 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:46:12,006 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:46:12,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:46:12,006 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 11:46:12,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:46:12,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1303917485, now seen corresponding path program 1 times [2022-11-20 11:46:12,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:46:12,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40606834] [2022-11-20 11:46:12,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:46:12,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:46:12,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:12,192 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:46:12,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:46:12,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40606834] [2022-11-20 11:46:12,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40606834] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:46:12,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817870133] [2022-11-20 11:46:12,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:46:12,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:46:12,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:46:12,195 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:46:12,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:46:12,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:12,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 11:46:12,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:46:12,595 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 11:46:12,595 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:46:12,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817870133] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:46:12,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:46:12,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-11-20 11:46:12,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885002270] [2022-11-20 11:46:12,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:46:12,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:46:12,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:46:12,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:46:12,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:46:12,601 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 321 [2022-11-20 11:46:12,603 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 341 transitions, 1116 flow. Second operand has 7 states, 7 states have (on average 240.28571428571428) internal successors, (1682), 7 states have internal predecessors, (1682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:12,603 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:46:12,603 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 321 [2022-11-20 11:46:12,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:46:14,009 INFO L130 PetriNetUnfolder]: 623/3966 cut-off events. [2022-11-20 11:46:14,009 INFO L131 PetriNetUnfolder]: For 891/891 co-relation queries the response was YES. [2022-11-20 11:46:14,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6863 conditions, 3966 events. 623/3966 cut-off events. For 891/891 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 32114 event pairs, 432 based on Foata normal form. 0/3549 useless extension candidates. Maximal degree in co-relation 6197. Up to 1172 conditions per place. [2022-11-20 11:46:14,142 INFO L137 encePairwiseOnDemand]: 297/321 looper letters, 196 selfloop transitions, 63 changer transitions 0/470 dead transitions. [2022-11-20 11:46:14,145 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 470 transitions, 2104 flow [2022-11-20 11:46:14,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 11:46:14,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 11:46:14,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2745 transitions. [2022-11-20 11:46:14,152 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7774001699235344 [2022-11-20 11:46:14,152 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2745 transitions. [2022-11-20 11:46:14,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2745 transitions. [2022-11-20 11:46:14,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:46:14,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2745 transitions. [2022-11-20 11:46:14,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 249.54545454545453) internal successors, (2745), 11 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:14,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 321.0) internal successors, (3852), 12 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:14,168 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 321.0) internal successors, (3852), 12 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:14,168 INFO L175 Difference]: Start difference. First operand has 284 places, 341 transitions, 1116 flow. Second operand 11 states and 2745 transitions. [2022-11-20 11:46:14,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 470 transitions, 2104 flow [2022-11-20 11:46:14,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 470 transitions, 2102 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:46:14,182 INFO L231 Difference]: Finished difference. Result has 296 places, 368 transitions, 1391 flow [2022-11-20 11:46:14,183 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=1114, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1391, PETRI_PLACES=296, PETRI_TRANSITIONS=368} [2022-11-20 11:46:14,184 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 27 predicate places. [2022-11-20 11:46:14,184 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 368 transitions, 1391 flow [2022-11-20 11:46:14,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 240.28571428571428) internal successors, (1682), 7 states have internal predecessors, (1682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:14,185 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:46:14,185 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:46:14,196 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-20 11:46:14,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:46:14,391 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 11:46:14,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:46:14,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1882691323, now seen corresponding path program 1 times [2022-11-20 11:46:14,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:46:14,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124797074] [2022-11-20 11:46:14,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:46:14,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:46:14,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:14,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:46:14,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:46:14,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124797074] [2022-11-20 11:46:14,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124797074] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:46:14,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:46:14,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:46:14,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466293850] [2022-11-20 11:46:14,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:46:14,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:46:14,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:46:14,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:46:14,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:46:14,720 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 321 [2022-11-20 11:46:14,722 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 368 transitions, 1391 flow. Second operand has 8 states, 8 states have (on average 234.625) internal successors, (1877), 8 states have internal predecessors, (1877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:14,722 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:46:14,722 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 321 [2022-11-20 11:46:14,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:46:17,119 INFO L130 PetriNetUnfolder]: 1259/5239 cut-off events. [2022-11-20 11:46:17,119 INFO L131 PetriNetUnfolder]: For 2027/2118 co-relation queries the response was YES. [2022-11-20 11:46:17,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9493 conditions, 5239 events. 1259/5239 cut-off events. For 2027/2118 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 48747 event pairs, 814 based on Foata normal form. 91/4593 useless extension candidates. Maximal degree in co-relation 8055. Up to 1778 conditions per place. [2022-11-20 11:46:17,194 INFO L137 encePairwiseOnDemand]: 293/321 looper letters, 224 selfloop transitions, 70 changer transitions 0/504 dead transitions. [2022-11-20 11:46:17,194 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 504 transitions, 2418 flow [2022-11-20 11:46:17,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 11:46:17,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-20 11:46:17,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3872 transitions. [2022-11-20 11:46:17,205 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7538940809968847 [2022-11-20 11:46:17,205 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3872 transitions. [2022-11-20 11:46:17,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3872 transitions. [2022-11-20 11:46:17,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:46:17,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3872 transitions. [2022-11-20 11:46:17,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 242.0) internal successors, (3872), 16 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:17,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 321.0) internal successors, (5457), 17 states have internal predecessors, (5457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:17,237 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 321.0) internal successors, (5457), 17 states have internal predecessors, (5457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:17,237 INFO L175 Difference]: Start difference. First operand has 296 places, 368 transitions, 1391 flow. Second operand 16 states and 3872 transitions. [2022-11-20 11:46:17,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 504 transitions, 2418 flow [2022-11-20 11:46:17,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 504 transitions, 2413 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 11:46:17,257 INFO L231 Difference]: Finished difference. Result has 312 places, 377 transitions, 1593 flow [2022-11-20 11:46:17,258 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=1386, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1593, PETRI_PLACES=312, PETRI_TRANSITIONS=377} [2022-11-20 11:46:17,261 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 43 predicate places. [2022-11-20 11:46:17,261 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 377 transitions, 1593 flow [2022-11-20 11:46:17,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 234.625) internal successors, (1877), 8 states have internal predecessors, (1877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:17,263 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:46:17,264 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:46:17,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:46:17,264 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 11:46:17,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:46:17,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1766110301, now seen corresponding path program 1 times [2022-11-20 11:46:17,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:46:17,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581792865] [2022-11-20 11:46:17,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:46:17,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:46:17,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:17,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:46:17,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:46:17,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581792865] [2022-11-20 11:46:17,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581792865] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:46:17,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:46:17,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:46:17,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199775736] [2022-11-20 11:46:17,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:46:17,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:46:17,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:46:17,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:46:17,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:46:17,473 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 321 [2022-11-20 11:46:17,476 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 377 transitions, 1593 flow. Second operand has 6 states, 6 states have (on average 277.8333333333333) internal successors, (1667), 6 states have internal predecessors, (1667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:17,476 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:46:17,476 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 321 [2022-11-20 11:46:17,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:46:20,432 INFO L130 PetriNetUnfolder]: 3180/9239 cut-off events. [2022-11-20 11:46:20,433 INFO L131 PetriNetUnfolder]: For 2712/2736 co-relation queries the response was YES. [2022-11-20 11:46:20,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17137 conditions, 9239 events. 3180/9239 cut-off events. For 2712/2736 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 89952 event pairs, 793 based on Foata normal form. 198/7989 useless extension candidates. Maximal degree in co-relation 16064. Up to 2952 conditions per place. [2022-11-20 11:46:20,525 INFO L137 encePairwiseOnDemand]: 314/321 looper letters, 31 selfloop transitions, 10 changer transitions 0/383 dead transitions. [2022-11-20 11:46:20,525 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 383 transitions, 1686 flow [2022-11-20 11:46:20,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:46:20,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:46:20,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1684 transitions. [2022-11-20 11:46:20,530 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8743509865005192 [2022-11-20 11:46:20,531 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1684 transitions. [2022-11-20 11:46:20,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1684 transitions. [2022-11-20 11:46:20,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:46:20,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1684 transitions. [2022-11-20 11:46:20,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 280.6666666666667) internal successors, (1684), 6 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:20,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 321.0) internal successors, (2247), 7 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:20,544 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 321.0) internal successors, (2247), 7 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:20,544 INFO L175 Difference]: Start difference. First operand has 312 places, 377 transitions, 1593 flow. Second operand 6 states and 1684 transitions. [2022-11-20 11:46:20,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 383 transitions, 1686 flow [2022-11-20 11:46:20,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 383 transitions, 1598 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-20 11:46:20,575 INFO L231 Difference]: Finished difference. Result has 309 places, 375 transitions, 1516 flow [2022-11-20 11:46:20,575 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=1496, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1516, PETRI_PLACES=309, PETRI_TRANSITIONS=375} [2022-11-20 11:46:20,577 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 40 predicate places. [2022-11-20 11:46:20,577 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 375 transitions, 1516 flow [2022-11-20 11:46:20,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 277.8333333333333) internal successors, (1667), 6 states have internal predecessors, (1667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:20,578 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:46:20,578 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:46:20,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:46:20,579 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 11:46:20,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:46:20,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1120811675, now seen corresponding path program 1 times [2022-11-20 11:46:20,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:46:20,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319638653] [2022-11-20 11:46:20,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:46:20,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:46:20,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:20,775 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:46:20,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:46:20,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319638653] [2022-11-20 11:46:20,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319638653] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:46:20,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861907970] [2022-11-20 11:46:20,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:46:20,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:46:20,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:46:20,778 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:46:20,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 11:46:20,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:20,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:46:20,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:46:21,015 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:46:21,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:46:21,100 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:46:21,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861907970] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:46:21,100 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:46:21,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-20 11:46:21,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569836874] [2022-11-20 11:46:21,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:46:21,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:46:21,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:46:21,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:46:21,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:46:21,107 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 321 [2022-11-20 11:46:21,111 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 375 transitions, 1516 flow. Second operand has 12 states, 12 states have (on average 286.5833333333333) internal successors, (3439), 12 states have internal predecessors, (3439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:21,111 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:46:21,112 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 321 [2022-11-20 11:46:21,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:46:23,673 INFO L130 PetriNetUnfolder]: 1829/7089 cut-off events. [2022-11-20 11:46:23,673 INFO L131 PetriNetUnfolder]: For 2002/2062 co-relation queries the response was YES. [2022-11-20 11:46:23,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14636 conditions, 7089 events. 1829/7089 cut-off events. For 2002/2062 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 70999 event pairs, 256 based on Foata normal form. 141/6583 useless extension candidates. Maximal degree in co-relation 14591. Up to 1045 conditions per place. [2022-11-20 11:46:23,771 INFO L137 encePairwiseOnDemand]: 314/321 looper letters, 78 selfloop transitions, 18 changer transitions 0/450 dead transitions. [2022-11-20 11:46:23,771 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 450 transitions, 1932 flow [2022-11-20 11:46:23,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 11:46:23,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 11:46:23,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5193 transitions. [2022-11-20 11:46:23,783 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8987538940809969 [2022-11-20 11:46:23,783 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 5193 transitions. [2022-11-20 11:46:23,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 5193 transitions. [2022-11-20 11:46:23,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:46:23,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 5193 transitions. [2022-11-20 11:46:23,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 288.5) internal successors, (5193), 18 states have internal predecessors, (5193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:23,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 321.0) internal successors, (6099), 19 states have internal predecessors, (6099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:23,812 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 321.0) internal successors, (6099), 19 states have internal predecessors, (6099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:23,812 INFO L175 Difference]: Start difference. First operand has 309 places, 375 transitions, 1516 flow. Second operand 18 states and 5193 transitions. [2022-11-20 11:46:23,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 450 transitions, 1932 flow [2022-11-20 11:46:23,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 450 transitions, 1912 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 11:46:23,830 INFO L231 Difference]: Finished difference. Result has 325 places, 387 transitions, 1602 flow [2022-11-20 11:46:23,831 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=1496, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1602, PETRI_PLACES=325, PETRI_TRANSITIONS=387} [2022-11-20 11:46:23,832 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 56 predicate places. [2022-11-20 11:46:23,832 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 387 transitions, 1602 flow [2022-11-20 11:46:23,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 286.5833333333333) internal successors, (3439), 12 states have internal predecessors, (3439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:23,834 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:46:23,834 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:46:23,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 11:46:24,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 11:46:24,041 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 11:46:24,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:46:24,042 INFO L85 PathProgramCache]: Analyzing trace with hash 385424369, now seen corresponding path program 1 times [2022-11-20 11:46:24,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:46:24,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133020913] [2022-11-20 11:46:24,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:46:24,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:46:24,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:24,276 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:46:24,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:46:24,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133020913] [2022-11-20 11:46:24,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133020913] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:46:24,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776803462] [2022-11-20 11:46:24,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:46:24,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:46:24,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:46:24,279 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:46:24,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 11:46:24,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:24,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:46:24,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:46:24,517 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:46:24,517 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:46:24,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776803462] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:46:24,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:46:24,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 11:46:24,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41014421] [2022-11-20 11:46:24,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:46:24,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:46:24,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:46:24,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:46:24,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:46:24,525 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 321 [2022-11-20 11:46:24,528 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 387 transitions, 1602 flow. Second operand has 6 states, 6 states have (on average 286.1666666666667) internal successors, (1717), 6 states have internal predecessors, (1717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:24,528 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:46:24,528 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 321 [2022-11-20 11:46:24,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:46:26,805 INFO L130 PetriNetUnfolder]: 1714/7059 cut-off events. [2022-11-20 11:46:26,806 INFO L131 PetriNetUnfolder]: For 3616/3700 co-relation queries the response was YES. [2022-11-20 11:46:26,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15306 conditions, 7059 events. 1714/7059 cut-off events. For 3616/3700 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 70924 event pairs, 160 based on Foata normal form. 192/6622 useless extension candidates. Maximal degree in co-relation 15233. Up to 1924 conditions per place. [2022-11-20 11:46:26,887 INFO L137 encePairwiseOnDemand]: 316/321 looper letters, 36 selfloop transitions, 11 changer transitions 0/401 dead transitions. [2022-11-20 11:46:26,887 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 401 transitions, 1723 flow [2022-11-20 11:46:26,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:46:26,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:46:26,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2020 transitions. [2022-11-20 11:46:26,892 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8989764129951046 [2022-11-20 11:46:26,893 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2020 transitions. [2022-11-20 11:46:26,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2020 transitions. [2022-11-20 11:46:26,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:46:26,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2020 transitions. [2022-11-20 11:46:26,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 288.57142857142856) internal successors, (2020), 7 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:26,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:26,904 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:26,905 INFO L175 Difference]: Start difference. First operand has 325 places, 387 transitions, 1602 flow. Second operand 7 states and 2020 transitions. [2022-11-20 11:46:26,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 401 transitions, 1723 flow [2022-11-20 11:46:26,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 401 transitions, 1691 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-20 11:46:26,928 INFO L231 Difference]: Finished difference. Result has 321 places, 383 transitions, 1565 flow [2022-11-20 11:46:26,928 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=1543, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1565, PETRI_PLACES=321, PETRI_TRANSITIONS=383} [2022-11-20 11:46:26,929 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 52 predicate places. [2022-11-20 11:46:26,929 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 383 transitions, 1565 flow [2022-11-20 11:46:26,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 286.1666666666667) internal successors, (1717), 6 states have internal predecessors, (1717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:26,930 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:46:26,930 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:46:26,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 11:46:27,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:46:27,137 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 11:46:27,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:46:27,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1869170925, now seen corresponding path program 1 times [2022-11-20 11:46:27,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:46:27,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977650587] [2022-11-20 11:46:27,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:46:27,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:46:27,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:27,393 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 11:46:27,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:46:27,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977650587] [2022-11-20 11:46:27,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977650587] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:46:27,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670357546] [2022-11-20 11:46:27,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:46:27,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:46:27,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:46:27,399 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:46:27,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 11:46:27,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:27,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 11:46:27,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:46:28,122 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:46:28,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:46:28,842 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:46:28,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670357546] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:46:28,842 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:46:28,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 23 [2022-11-20 11:46:28,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139479476] [2022-11-20 11:46:28,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:46:28,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 11:46:28,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:46:28,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 11:46:28,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2022-11-20 11:46:28,851 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 321 [2022-11-20 11:46:28,857 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 383 transitions, 1565 flow. Second operand has 23 states, 23 states have (on average 217.0) internal successors, (4991), 23 states have internal predecessors, (4991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:28,857 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:46:28,857 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 321 [2022-11-20 11:46:28,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:46:34,081 INFO L130 PetriNetUnfolder]: 1540/9972 cut-off events. [2022-11-20 11:46:34,081 INFO L131 PetriNetUnfolder]: For 3573/15892 co-relation queries the response was YES. [2022-11-20 11:46:34,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18575 conditions, 9972 events. 1540/9972 cut-off events. For 3573/15892 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 104933 event pairs, 335 based on Foata normal form. 279/9723 useless extension candidates. Maximal degree in co-relation 18437. Up to 596 conditions per place. [2022-11-20 11:46:34,229 INFO L137 encePairwiseOnDemand]: 279/321 looper letters, 382 selfloop transitions, 154 changer transitions 0/718 dead transitions. [2022-11-20 11:46:34,230 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 718 transitions, 3926 flow [2022-11-20 11:46:34,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-20 11:46:34,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-20 11:46:34,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 7927 transitions. [2022-11-20 11:46:34,252 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6859640013845621 [2022-11-20 11:46:34,253 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 7927 transitions. [2022-11-20 11:46:34,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 7927 transitions. [2022-11-20 11:46:34,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:46:34,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 7927 transitions. [2022-11-20 11:46:34,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 220.19444444444446) internal successors, (7927), 36 states have internal predecessors, (7927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:34,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 321.0) internal successors, (11877), 37 states have internal predecessors, (11877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:34,308 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 321.0) internal successors, (11877), 37 states have internal predecessors, (11877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:34,309 INFO L175 Difference]: Start difference. First operand has 321 places, 383 transitions, 1565 flow. Second operand 36 states and 7927 transitions. [2022-11-20 11:46:34,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 718 transitions, 3926 flow [2022-11-20 11:46:34,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 718 transitions, 3912 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 11:46:34,349 INFO L231 Difference]: Finished difference. Result has 360 places, 457 transitions, 2448 flow [2022-11-20 11:46:34,350 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=1551, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=2448, PETRI_PLACES=360, PETRI_TRANSITIONS=457} [2022-11-20 11:46:34,351 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 91 predicate places. [2022-11-20 11:46:34,351 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 457 transitions, 2448 flow [2022-11-20 11:46:34,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 217.0) internal successors, (4991), 23 states have internal predecessors, (4991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:34,353 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:46:34,354 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:46:34,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 11:46:34,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:46:34,563 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 11:46:34,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:46:34,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1539703867, now seen corresponding path program 1 times [2022-11-20 11:46:34,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:46:34,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157161219] [2022-11-20 11:46:34,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:46:34,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:46:34,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:35,115 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:46:35,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:46:35,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157161219] [2022-11-20 11:46:35,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157161219] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:46:35,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929522777] [2022-11-20 11:46:35,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:46:35,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:46:35,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:46:35,119 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:46:35,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 11:46:35,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:35,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:46:35,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:46:35,645 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 11:46:35,645 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:46:35,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929522777] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:46:35,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:46:35,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2022-11-20 11:46:35,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990057689] [2022-11-20 11:46:35,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:46:35,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:46:35,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:46:35,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:46:35,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:46:35,649 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 321 [2022-11-20 11:46:35,651 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 457 transitions, 2448 flow. Second operand has 6 states, 6 states have (on average 273.3333333333333) internal successors, (1640), 6 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:35,651 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:46:35,651 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 321 [2022-11-20 11:46:35,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:46:39,291 INFO L130 PetriNetUnfolder]: 2743/11312 cut-off events. [2022-11-20 11:46:39,292 INFO L131 PetriNetUnfolder]: For 8085/18935 co-relation queries the response was YES. [2022-11-20 11:46:39,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22496 conditions, 11312 events. 2743/11312 cut-off events. For 8085/18935 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 126761 event pairs, 548 based on Foata normal form. 330/10259 useless extension candidates. Maximal degree in co-relation 22297. Up to 1884 conditions per place. [2022-11-20 11:46:39,592 INFO L137 encePairwiseOnDemand]: 313/321 looper letters, 57 selfloop transitions, 15 changer transitions 6/489 dead transitions. [2022-11-20 11:46:39,592 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 489 transitions, 2744 flow [2022-11-20 11:46:39,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:46:39,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:46:39,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1931 transitions. [2022-11-20 11:46:39,605 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8593680462839342 [2022-11-20 11:46:39,605 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1931 transitions. [2022-11-20 11:46:39,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1931 transitions. [2022-11-20 11:46:39,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:46:39,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1931 transitions. [2022-11-20 11:46:39,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 275.85714285714283) internal successors, (1931), 7 states have internal predecessors, (1931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:39,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:39,613 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:39,613 INFO L175 Difference]: Start difference. First operand has 360 places, 457 transitions, 2448 flow. Second operand 7 states and 1931 transitions. [2022-11-20 11:46:39,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 489 transitions, 2744 flow [2022-11-20 11:46:39,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 489 transitions, 2646 flow, removed 7 selfloop flow, removed 10 redundant places. [2022-11-20 11:46:39,647 INFO L231 Difference]: Finished difference. Result has 355 places, 453 transitions, 2367 flow [2022-11-20 11:46:39,647 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=2344, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2367, PETRI_PLACES=355, PETRI_TRANSITIONS=453} [2022-11-20 11:46:39,648 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 86 predicate places. [2022-11-20 11:46:39,648 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 453 transitions, 2367 flow [2022-11-20 11:46:39,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 273.3333333333333) internal successors, (1640), 6 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:39,649 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:46:39,649 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:46:39,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 11:46:39,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:46:39,856 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 11:46:39,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:46:39,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1029650568, now seen corresponding path program 2 times [2022-11-20 11:46:39,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:46:39,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088121485] [2022-11-20 11:46:39,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:46:39,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:46:39,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:40,231 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:46:40,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:46:40,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088121485] [2022-11-20 11:46:40,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088121485] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:46:40,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931464630] [2022-11-20 11:46:40,232 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:46:40,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:46:40,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:46:40,234 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:46:40,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 11:46:40,411 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:46:40,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:46:40,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:46:40,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:46:40,749 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-20 11:46:40,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:46:41,084 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-20 11:46:41,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931464630] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:46:41,085 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:46:41,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 15 [2022-11-20 11:46:41,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344944446] [2022-11-20 11:46:41,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:46:41,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 11:46:41,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:46:41,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 11:46:41,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:46:41,092 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 321 [2022-11-20 11:46:41,097 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 453 transitions, 2367 flow. Second operand has 16 states, 16 states have (on average 280.5625) internal successors, (4489), 16 states have internal predecessors, (4489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:41,097 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:46:41,097 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 321 [2022-11-20 11:46:41,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:46:47,517 INFO L130 PetriNetUnfolder]: 8177/24699 cut-off events. [2022-11-20 11:46:47,517 INFO L131 PetriNetUnfolder]: For 10467/10999 co-relation queries the response was YES. [2022-11-20 11:46:47,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50295 conditions, 24699 events. 8177/24699 cut-off events. For 10467/10999 co-relation queries the response was YES. Maximal size of possible extension queue 833. Compared 282848 event pairs, 807 based on Foata normal form. 251/22530 useless extension candidates. Maximal degree in co-relation 45490. Up to 3654 conditions per place. [2022-11-20 11:46:47,945 INFO L137 encePairwiseOnDemand]: 312/321 looper letters, 105 selfloop transitions, 23 changer transitions 105/546 dead transitions. [2022-11-20 11:46:47,946 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 546 transitions, 2877 flow [2022-11-20 11:46:47,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 11:46:47,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-20 11:46:47,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 6202 transitions. [2022-11-20 11:46:47,952 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8782214670065137 [2022-11-20 11:46:47,952 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 6202 transitions. [2022-11-20 11:46:47,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 6202 transitions. [2022-11-20 11:46:47,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:46:47,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 6202 transitions. [2022-11-20 11:46:47,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 281.90909090909093) internal successors, (6202), 22 states have internal predecessors, (6202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:47,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 321.0) internal successors, (7383), 23 states have internal predecessors, (7383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:47,983 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 321.0) internal successors, (7383), 23 states have internal predecessors, (7383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:47,983 INFO L175 Difference]: Start difference. First operand has 355 places, 453 transitions, 2367 flow. Second operand 22 states and 6202 transitions. [2022-11-20 11:46:47,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 546 transitions, 2877 flow [2022-11-20 11:46:48,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 546 transitions, 2839 flow, removed 0 selfloop flow, removed 10 redundant places. [2022-11-20 11:46:48,065 INFO L231 Difference]: Finished difference. Result has 363 places, 352 transitions, 1578 flow [2022-11-20 11:46:48,066 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=2319, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1578, PETRI_PLACES=363, PETRI_TRANSITIONS=352} [2022-11-20 11:46:48,066 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 94 predicate places. [2022-11-20 11:46:48,067 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 352 transitions, 1578 flow [2022-11-20 11:46:48,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 280.5625) internal successors, (4489), 16 states have internal predecessors, (4489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:48,068 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:46:48,068 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:46:48,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 11:46:48,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-20 11:46:48,279 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 11:46:48,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:46:48,280 INFO L85 PathProgramCache]: Analyzing trace with hash 778937767, now seen corresponding path program 1 times [2022-11-20 11:46:48,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:46:48,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365224411] [2022-11-20 11:46:48,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:46:48,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:46:48,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:48,510 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-20 11:46:48,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:46:48,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365224411] [2022-11-20 11:46:48,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365224411] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:46:48,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097952567] [2022-11-20 11:46:48,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:46:48,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:46:48,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:46:48,513 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:46:48,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 11:46:48,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:48,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:46:48,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:46:48,752 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-20 11:46:48,753 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:46:48,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097952567] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:46:48,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:46:48,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 11:46:48,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120121376] [2022-11-20 11:46:48,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:46:48,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:46:48,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:46:48,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:46:48,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:46:48,758 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 321 [2022-11-20 11:46:48,759 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 352 transitions, 1578 flow. Second operand has 6 states, 6 states have (on average 286.0) internal successors, (1716), 6 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:48,759 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:46:48,760 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 321 [2022-11-20 11:46:48,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:46:49,393 INFO L130 PetriNetUnfolder]: 351/2135 cut-off events. [2022-11-20 11:46:49,394 INFO L131 PetriNetUnfolder]: For 1200/1200 co-relation queries the response was YES. [2022-11-20 11:46:49,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4820 conditions, 2135 events. 351/2135 cut-off events. For 1200/1200 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 14068 event pairs, 0 based on Foata normal form. 30/2115 useless extension candidates. Maximal degree in co-relation 4049. Up to 325 conditions per place. [2022-11-20 11:46:49,446 INFO L137 encePairwiseOnDemand]: 316/321 looper letters, 33 selfloop transitions, 8 changer transitions 0/367 dead transitions. [2022-11-20 11:46:49,447 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 367 transitions, 1704 flow [2022-11-20 11:46:49,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:46:49,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:46:49,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2019 transitions. [2022-11-20 11:46:49,449 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8985313751668892 [2022-11-20 11:46:49,449 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2019 transitions. [2022-11-20 11:46:49,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2019 transitions. [2022-11-20 11:46:49,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:46:49,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2019 transitions. [2022-11-20 11:46:49,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 288.42857142857144) internal successors, (2019), 7 states have internal predecessors, (2019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:49,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:49,459 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:49,460 INFO L175 Difference]: Start difference. First operand has 363 places, 352 transitions, 1578 flow. Second operand 7 states and 2019 transitions. [2022-11-20 11:46:49,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 367 transitions, 1704 flow [2022-11-20 11:46:49,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 367 transitions, 1401 flow, removed 15 selfloop flow, removed 29 redundant places. [2022-11-20 11:46:49,473 INFO L231 Difference]: Finished difference. Result has 309 places, 350 transitions, 1285 flow [2022-11-20 11:46:49,474 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=1269, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1285, PETRI_PLACES=309, PETRI_TRANSITIONS=350} [2022-11-20 11:46:49,476 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 40 predicate places. [2022-11-20 11:46:49,476 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 350 transitions, 1285 flow [2022-11-20 11:46:49,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 286.0) internal successors, (1716), 6 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:49,477 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:46:49,477 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:46:49,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 11:46:49,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-20 11:46:49,688 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 11:46:49,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:46:49,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1268679090, now seen corresponding path program 2 times [2022-11-20 11:46:49,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:46:49,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251509842] [2022-11-20 11:46:49,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:46:49,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:46:49,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:50,355 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 16 proven. 21 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 11:46:50,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:46:50,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251509842] [2022-11-20 11:46:50,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251509842] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:46:50,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924715410] [2022-11-20 11:46:50,356 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:46:50,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:46:50,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:46:50,357 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:46:50,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 11:46:50,537 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:46:50,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:46:50,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:46:50,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:46:50,921 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-11-20 11:46:50,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:46:51,316 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-11-20 11:46:51,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924715410] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:46:51,317 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:46:51,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 19 [2022-11-20 11:46:51,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452217181] [2022-11-20 11:46:51,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:46:51,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:46:51,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:46:51,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:46:51,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:46:51,326 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 321 [2022-11-20 11:46:51,331 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 350 transitions, 1285 flow. Second operand has 19 states, 19 states have (on average 215.47368421052633) internal successors, (4094), 19 states have internal predecessors, (4094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:51,331 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:46:51,331 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 321 [2022-11-20 11:46:51,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:46:54,732 INFO L130 PetriNetUnfolder]: 1069/5928 cut-off events. [2022-11-20 11:46:54,732 INFO L131 PetriNetUnfolder]: For 1751/1751 co-relation queries the response was YES. [2022-11-20 11:46:54,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11900 conditions, 5928 events. 1069/5928 cut-off events. For 1751/1751 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 52850 event pairs, 122 based on Foata normal form. 45/5623 useless extension candidates. Maximal degree in co-relation 9856. Up to 468 conditions per place. [2022-11-20 11:46:54,815 INFO L137 encePairwiseOnDemand]: 279/321 looper letters, 0 selfloop transitions, 0 changer transitions 602/602 dead transitions. [2022-11-20 11:46:54,815 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 602 transitions, 3153 flow [2022-11-20 11:46:54,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-20 11:46:54,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-20 11:46:54,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 8156 transitions. [2022-11-20 11:46:54,831 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6686342023282505 [2022-11-20 11:46:54,831 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 8156 transitions. [2022-11-20 11:46:54,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 8156 transitions. [2022-11-20 11:46:54,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:46:54,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 8156 transitions. [2022-11-20 11:46:54,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 214.6315789473684) internal successors, (8156), 38 states have internal predecessors, (8156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:54,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 321.0) internal successors, (12519), 39 states have internal predecessors, (12519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:54,866 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 321.0) internal successors, (12519), 39 states have internal predecessors, (12519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:54,866 INFO L175 Difference]: Start difference. First operand has 309 places, 350 transitions, 1285 flow. Second operand 38 states and 8156 transitions. [2022-11-20 11:46:54,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 602 transitions, 3153 flow [2022-11-20 11:46:54,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 602 transitions, 3127 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-11-20 11:46:54,886 INFO L231 Difference]: Finished difference. Result has 339 places, 0 transitions, 0 flow [2022-11-20 11:46:54,886 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=1264, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=0, PETRI_PLACES=339, PETRI_TRANSITIONS=0} [2022-11-20 11:46:54,887 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 70 predicate places. [2022-11-20 11:46:54,887 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 0 transitions, 0 flow [2022-11-20 11:46:54,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 215.47368421052633) internal successors, (4094), 19 states have internal predecessors, (4094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:54,890 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 23 remaining) [2022-11-20 11:46:54,891 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 23 remaining) [2022-11-20 11:46:54,891 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 23 remaining) [2022-11-20 11:46:54,891 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 23 remaining) [2022-11-20 11:46:54,892 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 23 remaining) [2022-11-20 11:46:54,892 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 23 remaining) [2022-11-20 11:46:54,892 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 23 remaining) [2022-11-20 11:46:54,892 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 23 remaining) [2022-11-20 11:46:54,892 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 23 remaining) [2022-11-20 11:46:54,893 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 23 remaining) [2022-11-20 11:46:54,893 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 23 remaining) [2022-11-20 11:46:54,893 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 23 remaining) [2022-11-20 11:46:54,893 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 23 remaining) [2022-11-20 11:46:54,893 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 23 remaining) [2022-11-20 11:46:54,894 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 23 remaining) [2022-11-20 11:46:54,894 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 23 remaining) [2022-11-20 11:46:54,894 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 23 remaining) [2022-11-20 11:46:54,894 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 23 remaining) [2022-11-20 11:46:54,894 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 23 remaining) [2022-11-20 11:46:54,895 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 23 remaining) [2022-11-20 11:46:54,895 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 23 remaining) [2022-11-20 11:46:54,895 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 23 remaining) [2022-11-20 11:46:54,895 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 23 remaining) [2022-11-20 11:46:54,903 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-11-20 11:46:55,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 11:46:55,102 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:46:55,107 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-20 11:46:55,108 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 11:46:55,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:46:55 BasicIcfg [2022-11-20 11:46:55,113 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 11:46:55,114 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 11:46:55,114 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 11:46:55,114 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 11:46:55,115 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:46:03" (3/4) ... [2022-11-20 11:46:55,118 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 11:46:55,124 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-20 11:46:55,124 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-20 11:46:55,125 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-20 11:46:55,142 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 37 nodes and edges [2022-11-20 11:46:55,142 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-20 11:46:55,143 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 11:46:55,143 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 11:46:55,214 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 11:46:55,214 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 11:46:55,215 INFO L158 Benchmark]: Toolchain (without parser) took 52733.16ms. Allocated memory was 182.5MB in the beginning and 8.7GB in the end (delta: 8.6GB). Free memory was 138.5MB in the beginning and 6.9GB in the end (delta: -6.7GB). Peak memory consumption was 1.8GB. Max. memory is 16.1GB. [2022-11-20 11:46:55,215 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 130.0MB. Free memory was 73.5MB in the beginning and 73.4MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:46:55,216 INFO L158 Benchmark]: CACSL2BoogieTranslator took 311.21ms. Allocated memory is still 182.5MB. Free memory was 138.0MB in the beginning and 126.5MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 11:46:55,216 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.95ms. Allocated memory is still 182.5MB. Free memory was 126.5MB in the beginning and 124.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:46:55,217 INFO L158 Benchmark]: Boogie Preprocessor took 39.89ms. Allocated memory is still 182.5MB. Free memory was 124.4MB in the beginning and 122.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:46:55,217 INFO L158 Benchmark]: RCFGBuilder took 893.08ms. Allocated memory is still 182.5MB. Free memory was 122.3MB in the beginning and 146.6MB in the end (delta: -24.3MB). Peak memory consumption was 25.0MB. Max. memory is 16.1GB. [2022-11-20 11:46:55,217 INFO L158 Benchmark]: TraceAbstraction took 51331.54ms. Allocated memory was 182.5MB in the beginning and 8.7GB in the end (delta: 8.6GB). Free memory was 145.5MB in the beginning and 6.9GB in the end (delta: -6.7GB). Peak memory consumption was 1.8GB. Max. memory is 16.1GB. [2022-11-20 11:46:55,218 INFO L158 Benchmark]: Witness Printer took 100.32ms. Allocated memory is still 8.7GB. Free memory was 6.9GB in the beginning and 6.9GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 11:46:55,221 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 130.0MB. Free memory was 73.5MB in the beginning and 73.4MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 311.21ms. Allocated memory is still 182.5MB. Free memory was 138.0MB in the beginning and 126.5MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.95ms. Allocated memory is still 182.5MB. Free memory was 126.5MB in the beginning and 124.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.89ms. Allocated memory is still 182.5MB. Free memory was 124.4MB in the beginning and 122.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 893.08ms. Allocated memory is still 182.5MB. Free memory was 122.3MB in the beginning and 146.6MB in the end (delta: -24.3MB). Peak memory consumption was 25.0MB. Max. memory is 16.1GB. * TraceAbstraction took 51331.54ms. Allocated memory was 182.5MB in the beginning and 8.7GB in the end (delta: 8.6GB). Free memory was 145.5MB in the beginning and 6.9GB in the end (delta: -6.7GB). Peak memory consumption was 1.8GB. Max. memory is 16.1GB. * Witness Printer took 100.32ms. Allocated memory is still 8.7GB. Free memory was 6.9GB in the beginning and 6.9GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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: 51.1s, OverallIterations: 16, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 37.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5696 SdHoareTripleChecker+Valid, 4.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5696 mSDsluCounter, 858 SdHoareTripleChecker+Invalid, 3.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 677 mSDsCounter, 492 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4776 IncrementalHoareTripleChecker+Invalid, 5268 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 492 mSolverCounterUnsat, 181 mSDtfsCounter, 4776 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2998 GetRequests, 2679 SyntacticMatches, 12 SemanticMatches, 307 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2106 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2448occurred in iteration=12, InterpolantAutomatonStates: 232, 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: 0.4s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 7.9s InterpolantComputationTime, 4270 NumberOfCodeBlocks, 4108 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 5195 ConstructedInterpolants, 0 QuantifiedInterpolants, 10977 SizeOfPredicates, 46 NumberOfNonLiveVariables, 3686 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 33 InterpolantComputations, 10 PerfectInterpolantSequences, 541/926 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! [2022-11-20 11:46:55,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc844be-08e0-47d6-81b0-74a3a5499b81/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE