./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-inc-subseq.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a05fee0-44d4-4950-8464-469ae9077216/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a05fee0-44d4-4950-8464-469ae9077216/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a05fee0-44d4-4950-8464-469ae9077216/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a05fee0-44d4-4950-8464-469ae9077216/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-inc-subseq.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a05fee0-44d4-4950-8464-469ae9077216/bin/uautomizer-QkZJyEgLgS/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a05fee0-44d4-4950-8464-469ae9077216/bin/uautomizer-QkZJyEgLgS --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 cd94157895dc71e9f24fce5dbc4a71d4e4b55c4da9be28372139a3001decae0a --- 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-4e7fbc6 [2022-11-23 02:00:57,681 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 02:00:57,684 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 02:00:57,708 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 02:00:57,709 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 02:00:57,710 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 02:00:57,712 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 02:00:57,714 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 02:00:57,716 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 02:00:57,718 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 02:00:57,719 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 02:00:57,721 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 02:00:57,721 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 02:00:57,723 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 02:00:57,725 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 02:00:57,727 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 02:00:57,728 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 02:00:57,729 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 02:00:57,732 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 02:00:57,735 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 02:00:57,737 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 02:00:57,746 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 02:00:57,748 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 02:00:57,749 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 02:00:57,761 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 02:00:57,762 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 02:00:57,762 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 02:00:57,763 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 02:00:57,764 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 02:00:57,765 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 02:00:57,772 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 02:00:57,773 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 02:00:57,774 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 02:00:57,775 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 02:00:57,777 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 02:00:57,777 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 02:00:57,780 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 02:00:57,781 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 02:00:57,782 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 02:00:57,783 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 02:00:57,785 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 02:00:57,786 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a05fee0-44d4-4950-8464-469ae9077216/bin/uautomizer-QkZJyEgLgS/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-23 02:00:57,827 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 02:00:57,834 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 02:00:57,835 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 02:00:57,835 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 02:00:57,836 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 02:00:57,837 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 02:00:57,838 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 02:00:57,838 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 02:00:57,839 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 02:00:57,843 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 02:00:57,843 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 02:00:57,844 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 02:00:57,844 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 02:00:57,844 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 02:00:57,845 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 02:00:57,845 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 02:00:57,845 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 02:00:57,845 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 02:00:57,846 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 02:00:57,846 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 02:00:57,846 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 02:00:57,847 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 02:00:57,847 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 02:00:57,847 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 02:00:57,848 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 02:00:57,848 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 02:00:57,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:00:57,849 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 02:00:57,849 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 02:00:57,849 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 02:00:57,850 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 02:00:57,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 02:00:57,850 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 02:00:57,851 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 02:00:57,851 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 02:00:57,851 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 02:00:57,852 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a05fee0-44d4-4950-8464-469ae9077216/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a05fee0-44d4-4950-8464-469ae9077216/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd94157895dc71e9f24fce5dbc4a71d4e4b55c4da9be28372139a3001decae0a [2022-11-23 02:00:58,213 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 02:00:58,254 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 02:00:58,257 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 02:00:58,259 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 02:00:58,259 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 02:00:58,261 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a05fee0-44d4-4950-8464-469ae9077216/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/weaver/popl20-more-inc-subseq.wvr.c [2022-11-23 02:01:01,877 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 02:01:02,128 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 02:01:02,129 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a05fee0-44d4-4950-8464-469ae9077216/sv-benchmarks/c/weaver/popl20-more-inc-subseq.wvr.c [2022-11-23 02:01:02,138 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a05fee0-44d4-4950-8464-469ae9077216/bin/uautomizer-QkZJyEgLgS/data/bb95e9415/1484c0c58ce14eb8821ee39365bdad3b/FLAG0dff5591b [2022-11-23 02:01:02,169 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a05fee0-44d4-4950-8464-469ae9077216/bin/uautomizer-QkZJyEgLgS/data/bb95e9415/1484c0c58ce14eb8821ee39365bdad3b [2022-11-23 02:01:02,175 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 02:01:02,177 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 02:01:02,185 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 02:01:02,185 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 02:01:02,189 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 02:01:02,190 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:01:02" (1/1) ... [2022-11-23 02:01:02,192 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2583823d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:02, skipping insertion in model container [2022-11-23 02:01:02,193 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:01:02" (1/1) ... [2022-11-23 02:01:02,206 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 02:01:02,242 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 02:01:02,419 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_8a05fee0-44d4-4950-8464-469ae9077216/sv-benchmarks/c/weaver/popl20-more-inc-subseq.wvr.c[2924,2937] [2022-11-23 02:01:02,426 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:01:02,438 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 02:01:02,464 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_8a05fee0-44d4-4950-8464-469ae9077216/sv-benchmarks/c/weaver/popl20-more-inc-subseq.wvr.c[2924,2937] [2022-11-23 02:01:02,468 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:01:02,483 INFO L208 MainTranslator]: Completed translation [2022-11-23 02:01:02,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:02 WrapperNode [2022-11-23 02:01:02,484 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 02:01:02,485 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 02:01:02,485 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 02:01:02,485 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 02:01:02,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:02" (1/1) ... [2022-11-23 02:01:02,504 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:02" (1/1) ... [2022-11-23 02:01:02,535 INFO L138 Inliner]: procedures = 24, calls = 45, calls flagged for inlining = 11, calls inlined = 13, statements flattened = 201 [2022-11-23 02:01:02,536 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 02:01:02,536 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 02:01:02,537 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 02:01:02,537 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 02:01:02,547 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:02" (1/1) ... [2022-11-23 02:01:02,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:02" (1/1) ... [2022-11-23 02:01:02,554 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:02" (1/1) ... [2022-11-23 02:01:02,554 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:02" (1/1) ... [2022-11-23 02:01:02,562 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:02" (1/1) ... [2022-11-23 02:01:02,580 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:02" (1/1) ... [2022-11-23 02:01:02,582 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:02" (1/1) ... [2022-11-23 02:01:02,596 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:02" (1/1) ... [2022-11-23 02:01:02,600 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 02:01:02,601 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 02:01:02,601 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 02:01:02,601 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 02:01:02,602 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:02" (1/1) ... [2022-11-23 02:01:02,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:01:02,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a05fee0-44d4-4950-8464-469ae9077216/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:01:02,645 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a05fee0-44d4-4950-8464-469ae9077216/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 02:01:02,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a05fee0-44d4-4950-8464-469ae9077216/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 02:01:02,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 02:01:02,685 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-23 02:01:02,686 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-23 02:01:02,686 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-23 02:01:02,686 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-23 02:01:02,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 02:01:02,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 02:01:02,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 02:01:02,687 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-23 02:01:02,687 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-23 02:01:02,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 02:01:02,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 02:01:02,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 02:01:02,688 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 02:01:02,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 02:01:02,691 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 02:01:02,837 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 02:01:02,851 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 02:01:03,402 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 02:01:03,640 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 02:01:03,640 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-23 02:01:03,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:01:03 BoogieIcfgContainer [2022-11-23 02:01:03,643 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 02:01:03,646 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 02:01:03,646 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 02:01:03,650 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 02:01:03,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:01:02" (1/3) ... [2022-11-23 02:01:03,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b91da15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:01:03, skipping insertion in model container [2022-11-23 02:01:03,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:02" (2/3) ... [2022-11-23 02:01:03,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b91da15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:01:03, skipping insertion in model container [2022-11-23 02:01:03,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:01:03" (3/3) ... [2022-11-23 02:01:03,653 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-inc-subseq.wvr.c [2022-11-23 02:01:03,663 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-23 02:01:03,674 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 02:01:03,674 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-23 02:01:03,675 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 02:01:03,767 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-23 02:01:03,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 194 places, 202 transitions, 420 flow [2022-11-23 02:01:03,909 INFO L130 PetriNetUnfolder]: 15/200 cut-off events. [2022-11-23 02:01:03,909 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-23 02:01:03,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 200 events. 15/200 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 151 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 164. Up to 2 conditions per place. [2022-11-23 02:01:03,916 INFO L82 GeneralOperation]: Start removeDead. Operand has 194 places, 202 transitions, 420 flow [2022-11-23 02:01:03,922 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 174 places, 181 transitions, 371 flow [2022-11-23 02:01:03,927 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 02:01:03,944 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 174 places, 181 transitions, 371 flow [2022-11-23 02:01:03,947 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 174 places, 181 transitions, 371 flow [2022-11-23 02:01:03,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 181 transitions, 371 flow [2022-11-23 02:01:03,990 INFO L130 PetriNetUnfolder]: 14/181 cut-off events. [2022-11-23 02:01:03,990 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-23 02:01:03,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 181 events. 14/181 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 149 event pairs, 0 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 164. Up to 2 conditions per place. [2022-11-23 02:01:03,993 INFO L119 LiptonReduction]: Number of co-enabled transitions 942 [2022-11-23 02:01:13,942 INFO L134 LiptonReduction]: Checked pairs total: 1250 [2022-11-23 02:01:13,942 INFO L136 LiptonReduction]: Total number of compositions: 192 [2022-11-23 02:01:13,962 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 02:01:13,969 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;@2d2e51af, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 02:01:13,970 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-11-23 02:01:13,973 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-11-23 02:01:13,973 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 02:01:13,974 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:01:13,974 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-23 02:01:13,975 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 02:01:13,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:01:13,982 INFO L85 PathProgramCache]: Analyzing trace with hash 26547, now seen corresponding path program 1 times [2022-11-23 02:01:13,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:01:13,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046946928] [2022-11-23 02:01:13,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:01:13,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:01:14,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:14,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:01:14,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:01:14,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046946928] [2022-11-23 02:01:14,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046946928] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:01:14,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:01:14,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 02:01:14,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135224962] [2022-11-23 02:01:14,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:01:14,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:01:14,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:01:14,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:01:14,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:01:14,408 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 394 [2022-11-23 02:01:14,415 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 30 transitions, 69 flow. Second operand has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:14,416 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:01:14,416 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 394 [2022-11-23 02:01:14,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:01:14,683 INFO L130 PetriNetUnfolder]: 297/483 cut-off events. [2022-11-23 02:01:14,684 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-11-23 02:01:14,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1006 conditions, 483 events. 297/483 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 2055 event pairs, 164 based on Foata normal form. 0/249 useless extension candidates. Maximal degree in co-relation 440. Up to 241 conditions per place. [2022-11-23 02:01:14,690 INFO L137 encePairwiseOnDemand]: 384/394 looper letters, 45 selfloop transitions, 4 changer transitions 0/50 dead transitions. [2022-11-23 02:01:14,690 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 50 transitions, 216 flow [2022-11-23 02:01:14,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:01:14,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:01:14,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 573 transitions. [2022-11-23 02:01:14,718 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4847715736040609 [2022-11-23 02:01:14,719 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 573 transitions. [2022-11-23 02:01:14,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 573 transitions. [2022-11-23 02:01:14,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:01:14,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 573 transitions. [2022-11-23 02:01:14,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:14,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 394.0) internal successors, (1576), 4 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:14,738 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 394.0) internal successors, (1576), 4 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:14,740 INFO L175 Difference]: Start difference. First operand has 32 places, 30 transitions, 69 flow. Second operand 3 states and 573 transitions. [2022-11-23 02:01:14,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 50 transitions, 216 flow [2022-11-23 02:01:14,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 50 transitions, 206 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-23 02:01:14,747 INFO L231 Difference]: Finished difference. Result has 31 places, 31 transitions, 96 flow [2022-11-23 02:01:14,750 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=394, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=31, PETRI_TRANSITIONS=31} [2022-11-23 02:01:14,754 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, -1 predicate places. [2022-11-23 02:01:14,755 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 31 transitions, 96 flow [2022-11-23 02:01:14,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:14,756 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:01:14,756 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-23 02:01:14,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 02:01:14,757 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 02:01:14,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:01:14,758 INFO L85 PathProgramCache]: Analyzing trace with hash 824611, now seen corresponding path program 1 times [2022-11-23 02:01:14,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:01:14,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320954832] [2022-11-23 02:01:14,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:01:14,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:01:14,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:14,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:01:14,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:01:14,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320954832] [2022-11-23 02:01:14,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320954832] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:01:14,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:01:14,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:01:14,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557005250] [2022-11-23 02:01:14,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:01:14,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:01:14,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:01:14,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:01:14,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:01:14,883 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 394 [2022-11-23 02:01:14,884 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 31 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:14,884 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:01:14,885 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 394 [2022-11-23 02:01:14,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:01:15,047 INFO L130 PetriNetUnfolder]: 297/481 cut-off events. [2022-11-23 02:01:15,048 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-23 02:01:15,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1005 conditions, 481 events. 297/481 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 2074 event pairs, 164 based on Foata normal form. 0/253 useless extension candidates. Maximal degree in co-relation 491. Up to 473 conditions per place. [2022-11-23 02:01:15,057 INFO L137 encePairwiseOnDemand]: 391/394 looper letters, 27 selfloop transitions, 1 changer transitions 0/29 dead transitions. [2022-11-23 02:01:15,058 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 29 transitions, 144 flow [2022-11-23 02:01:15,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:01:15,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:01:15,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 543 transitions. [2022-11-23 02:01:15,062 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4593908629441624 [2022-11-23 02:01:15,063 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 543 transitions. [2022-11-23 02:01:15,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 543 transitions. [2022-11-23 02:01:15,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:01:15,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 543 transitions. [2022-11-23 02:01:15,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:15,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 394.0) internal successors, (1576), 4 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:15,074 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 394.0) internal successors, (1576), 4 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:15,074 INFO L175 Difference]: Start difference. First operand has 31 places, 31 transitions, 96 flow. Second operand 3 states and 543 transitions. [2022-11-23 02:01:15,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 29 transitions, 144 flow [2022-11-23 02:01:15,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 29 transitions, 136 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 02:01:15,078 INFO L231 Difference]: Finished difference. Result has 29 places, 29 transitions, 82 flow [2022-11-23 02:01:15,078 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=394, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=29, PETRI_TRANSITIONS=29} [2022-11-23 02:01:15,080 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, -3 predicate places. [2022-11-23 02:01:15,080 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 29 transitions, 82 flow [2022-11-23 02:01:15,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:15,081 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:01:15,082 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-23 02:01:15,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 02:01:15,083 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 02:01:15,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:01:15,087 INFO L85 PathProgramCache]: Analyzing trace with hash 824639, now seen corresponding path program 1 times [2022-11-23 02:01:15,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:01:15,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509021833] [2022-11-23 02:01:15,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:01:15,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:01:15,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:15,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:01:15,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:01:15,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509021833] [2022-11-23 02:01:15,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509021833] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:01:15,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144245791] [2022-11-23 02:01:15,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:01:15,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:01:15,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a05fee0-44d4-4950-8464-469ae9077216/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:01:15,249 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a05fee0-44d4-4950-8464-469ae9077216/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:01:15,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a05fee0-44d4-4950-8464-469ae9077216/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 02:01:15,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:15,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 02:01:15,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:01:15,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:01:15,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:01:15,492 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:01:15,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144245791] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:01:15,493 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:01:15,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-11-23 02:01:15,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819051208] [2022-11-23 02:01:15,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:01:15,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 02:01:15,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:01:15,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 02:01:15,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:01:15,584 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 394 [2022-11-23 02:01:15,586 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 29 transitions, 82 flow. Second operand has 7 states, 7 states have (on average 173.14285714285714) internal successors, (1212), 7 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:15,587 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:01:15,587 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 394 [2022-11-23 02:01:15,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:01:16,077 INFO L130 PetriNetUnfolder]: 741/1198 cut-off events. [2022-11-23 02:01:16,077 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-23 02:01:16,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2484 conditions, 1198 events. 741/1198 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6012 event pairs, 410 based on Foata normal form. 0/642 useless extension candidates. Maximal degree in co-relation 2476. Up to 239 conditions per place. [2022-11-23 02:01:16,087 INFO L137 encePairwiseOnDemand]: 388/394 looper letters, 100 selfloop transitions, 13 changer transitions 0/114 dead transitions. [2022-11-23 02:01:16,088 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 114 transitions, 512 flow [2022-11-23 02:01:16,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 02:01:16,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-23 02:01:16,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1151 transitions. [2022-11-23 02:01:16,093 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48688663282571915 [2022-11-23 02:01:16,093 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1151 transitions. [2022-11-23 02:01:16,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1151 transitions. [2022-11-23 02:01:16,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:01:16,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1151 transitions. [2022-11-23 02:01:16,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 191.83333333333334) internal successors, (1151), 6 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:16,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 394.0) internal successors, (2758), 7 states have internal predecessors, (2758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:16,106 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 394.0) internal successors, (2758), 7 states have internal predecessors, (2758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:16,107 INFO L175 Difference]: Start difference. First operand has 29 places, 29 transitions, 82 flow. Second operand 6 states and 1151 transitions. [2022-11-23 02:01:16,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 114 transitions, 512 flow [2022-11-23 02:01:16,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 114 transitions, 511 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 02:01:16,112 INFO L231 Difference]: Finished difference. Result has 36 places, 38 transitions, 174 flow [2022-11-23 02:01:16,113 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=394, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=174, PETRI_PLACES=36, PETRI_TRANSITIONS=38} [2022-11-23 02:01:16,117 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, 4 predicate places. [2022-11-23 02:01:16,117 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 38 transitions, 174 flow [2022-11-23 02:01:16,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 173.14285714285714) internal successors, (1212), 7 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:16,118 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:01:16,119 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 02:01:16,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a05fee0-44d4-4950-8464-469ae9077216/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 02:01:16,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a05fee0-44d4-4950-8464-469ae9077216/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:01:16,327 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 02:01:16,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:01:16,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1190788426, now seen corresponding path program 1 times [2022-11-23 02:01:16,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:01:16,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480246147] [2022-11-23 02:01:16,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:01:16,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:01:16,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:16,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:01:16,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:01:16,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480246147] [2022-11-23 02:01:16,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480246147] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:01:16,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:01:16,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 02:01:16,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478280029] [2022-11-23 02:01:16,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:01:16,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:01:16,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:01:16,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:01:16,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:01:16,567 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 394 [2022-11-23 02:01:16,568 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 38 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:16,568 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:01:16,569 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 394 [2022-11-23 02:01:16,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:01:16,993 INFO L130 PetriNetUnfolder]: 1401/2198 cut-off events. [2022-11-23 02:01:16,993 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-23 02:01:16,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4577 conditions, 2198 events. 1401/2198 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 12440 event pairs, 335 based on Foata normal form. 0/1201 useless extension candidates. Maximal degree in co-relation 4565. Up to 1316 conditions per place. [2022-11-23 02:01:17,009 INFO L137 encePairwiseOnDemand]: 390/394 looper letters, 50 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2022-11-23 02:01:17,010 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 53 transitions, 311 flow [2022-11-23 02:01:17,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:01:17,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:01:17,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 573 transitions. [2022-11-23 02:01:17,013 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4847715736040609 [2022-11-23 02:01:17,014 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 573 transitions. [2022-11-23 02:01:17,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 573 transitions. [2022-11-23 02:01:17,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:01:17,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 573 transitions. [2022-11-23 02:01:17,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:17,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 394.0) internal successors, (1576), 4 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:17,021 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 394.0) internal successors, (1576), 4 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:17,022 INFO L175 Difference]: Start difference. First operand has 36 places, 38 transitions, 174 flow. Second operand 3 states and 573 transitions. [2022-11-23 02:01:17,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 53 transitions, 311 flow [2022-11-23 02:01:17,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 53 transitions, 292 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-23 02:01:17,026 INFO L231 Difference]: Finished difference. Result has 38 places, 39 transitions, 169 flow [2022-11-23 02:01:17,026 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=394, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=38, PETRI_TRANSITIONS=39} [2022-11-23 02:01:17,027 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, 6 predicate places. [2022-11-23 02:01:17,028 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 39 transitions, 169 flow [2022-11-23 02:01:17,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:17,029 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:01:17,029 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 02:01:17,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 02:01:17,030 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 02:01:17,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:01:17,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1190790652, now seen corresponding path program 1 times [2022-11-23 02:01:17,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:01:17,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075598588] [2022-11-23 02:01:17,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:01:17,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:01:17,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:17,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:01:17,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:01:17,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075598588] [2022-11-23 02:01:17,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075598588] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:01:17,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:01:17,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:01:17,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211448683] [2022-11-23 02:01:17,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:01:17,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:01:17,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:01:17,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:01:17,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:01:17,361 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 394 [2022-11-23 02:01:17,362 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 39 transitions, 169 flow. Second operand has 4 states, 4 states have (on average 169.5) internal successors, (678), 4 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:17,363 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:01:17,363 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 394 [2022-11-23 02:01:17,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:01:17,898 INFO L130 PetriNetUnfolder]: 1726/2894 cut-off events. [2022-11-23 02:01:17,898 INFO L131 PetriNetUnfolder]: For 109/109 co-relation queries the response was YES. [2022-11-23 02:01:17,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6450 conditions, 2894 events. 1726/2894 cut-off events. For 109/109 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 18457 event pairs, 1100 based on Foata normal form. 60/1783 useless extension candidates. Maximal degree in co-relation 6436. Up to 2177 conditions per place. [2022-11-23 02:01:17,920 INFO L137 encePairwiseOnDemand]: 387/394 looper letters, 52 selfloop transitions, 3 changer transitions 4/60 dead transitions. [2022-11-23 02:01:17,920 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 60 transitions, 369 flow [2022-11-23 02:01:17,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 02:01:17,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-23 02:01:17,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 719 transitions. [2022-11-23 02:01:17,924 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45621827411167515 [2022-11-23 02:01:17,924 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 719 transitions. [2022-11-23 02:01:17,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 719 transitions. [2022-11-23 02:01:17,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:01:17,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 719 transitions. [2022-11-23 02:01:17,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 179.75) internal successors, (719), 4 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:17,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 394.0) internal successors, (1970), 5 states have internal predecessors, (1970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:17,933 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 394.0) internal successors, (1970), 5 states have internal predecessors, (1970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:17,933 INFO L175 Difference]: Start difference. First operand has 38 places, 39 transitions, 169 flow. Second operand 4 states and 719 transitions. [2022-11-23 02:01:17,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 60 transitions, 369 flow [2022-11-23 02:01:17,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 60 transitions, 366 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 02:01:17,937 INFO L231 Difference]: Finished difference. Result has 41 places, 39 transitions, 182 flow [2022-11-23 02:01:17,937 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=394, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=182, PETRI_PLACES=41, PETRI_TRANSITIONS=39} [2022-11-23 02:01:17,938 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, 9 predicate places. [2022-11-23 02:01:17,938 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 39 transitions, 182 flow [2022-11-23 02:01:17,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 169.5) internal successors, (678), 4 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:17,939 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:01:17,940 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-11-23 02:01:17,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 02:01:17,940 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 02:01:17,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:01:17,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1202175025, now seen corresponding path program 2 times [2022-11-23 02:01:17,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:01:17,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257651562] [2022-11-23 02:01:17,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:01:17,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:01:17,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:18,067 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:01:18,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:01:18,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257651562] [2022-11-23 02:01:18,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257651562] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:01:18,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566217098] [2022-11-23 02:01:18,069 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 02:01:18,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:01:18,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a05fee0-44d4-4950-8464-469ae9077216/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:01:18,070 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a05fee0-44d4-4950-8464-469ae9077216/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:01:18,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a05fee0-44d4-4950-8464-469ae9077216/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 02:01:18,178 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-23 02:01:18,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:01:18,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 02:01:18,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:01:18,217 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 02:01:18,218 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:01:18,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566217098] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:01:18,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:01:18,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-11-23 02:01:18,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221989224] [2022-11-23 02:01:18,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:01:18,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:01:18,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:01:18,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:01:18,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-23 02:01:18,254 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 394 [2022-11-23 02:01:18,255 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:18,255 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:01:18,255 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 394 [2022-11-23 02:01:18,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:01:18,709 INFO L130 PetriNetUnfolder]: 1726/2893 cut-off events. [2022-11-23 02:01:18,709 INFO L131 PetriNetUnfolder]: For 319/349 co-relation queries the response was YES. [2022-11-23 02:01:18,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7163 conditions, 2893 events. 1726/2893 cut-off events. For 319/349 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 18555 event pairs, 1100 based on Foata normal form. 1/1993 useless extension candidates. Maximal degree in co-relation 7147. Up to 2848 conditions per place. [2022-11-23 02:01:18,733 INFO L137 encePairwiseOnDemand]: 391/394 looper letters, 31 selfloop transitions, 6 changer transitions 0/38 dead transitions. [2022-11-23 02:01:18,733 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 38 transitions, 246 flow [2022-11-23 02:01:18,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:01:18,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:01:18,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 547 transitions. [2022-11-23 02:01:18,739 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46277495769881555 [2022-11-23 02:01:18,739 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 547 transitions. [2022-11-23 02:01:18,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 547 transitions. [2022-11-23 02:01:18,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:01:18,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 547 transitions. [2022-11-23 02:01:18,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 182.33333333333334) internal successors, (547), 3 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:18,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 394.0) internal successors, (1576), 4 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:18,753 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 394.0) internal successors, (1576), 4 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:18,753 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 182 flow. Second operand 3 states and 547 transitions. [2022-11-23 02:01:18,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 38 transitions, 246 flow [2022-11-23 02:01:18,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 38 transitions, 240 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-11-23 02:01:18,758 INFO L231 Difference]: Finished difference. Result has 41 places, 38 transitions, 178 flow [2022-11-23 02:01:18,759 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=394, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=41, PETRI_TRANSITIONS=38} [2022-11-23 02:01:18,760 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, 9 predicate places. [2022-11-23 02:01:18,760 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 38 transitions, 178 flow [2022-11-23 02:01:18,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:18,761 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:01:18,761 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:01:18,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a05fee0-44d4-4950-8464-469ae9077216/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 02:01:18,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a05fee0-44d4-4950-8464-469ae9077216/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-23 02:01:18,968 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 02:01:18,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:01:18,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1398665076, now seen corresponding path program 1 times [2022-11-23 02:01:18,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:01:18,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383994000] [2022-11-23 02:01:18,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:01:18,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:01:18,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:19,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:01:19,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:01:19,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383994000] [2022-11-23 02:01:19,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383994000] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:01:19,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785127394] [2022-11-23 02:01:19,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:01:19,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:01:19,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a05fee0-44d4-4950-8464-469ae9077216/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:01:19,138 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a05fee0-44d4-4950-8464-469ae9077216/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:01:19,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a05fee0-44d4-4950-8464-469ae9077216/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 02:01:19,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:19,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 02:01:19,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:01:19,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 02:01:19,340 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:01:19,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785127394] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:01:19,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:01:19,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2022-11-23 02:01:19,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081063311] [2022-11-23 02:01:19,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:01:19,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 02:01:19,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:01:19,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 02:01:19,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-23 02:01:19,459 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 394 [2022-11-23 02:01:19,460 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 38 transitions, 178 flow. Second operand has 5 states, 5 states have (on average 167.4) internal successors, (837), 5 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:19,460 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:01:19,460 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 394 [2022-11-23 02:01:19,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:01:19,840 INFO L130 PetriNetUnfolder]: 1286/2159 cut-off events. [2022-11-23 02:01:19,841 INFO L131 PetriNetUnfolder]: For 220/220 co-relation queries the response was YES. [2022-11-23 02:01:19,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5323 conditions, 2159 events. 1286/2159 cut-off events. For 220/220 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 13020 event pairs, 808 based on Foata normal form. 2/1537 useless extension candidates. Maximal degree in co-relation 5306. Up to 2122 conditions per place. [2022-11-23 02:01:19,855 INFO L137 encePairwiseOnDemand]: 389/394 looper letters, 29 selfloop transitions, 7 changer transitions 0/37 dead transitions. [2022-11-23 02:01:19,856 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 37 transitions, 246 flow [2022-11-23 02:01:19,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 02:01:19,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-23 02:01:19,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 690 transitions. [2022-11-23 02:01:19,859 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43781725888324874 [2022-11-23 02:01:19,860 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 690 transitions. [2022-11-23 02:01:19,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 690 transitions. [2022-11-23 02:01:19,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:01:19,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 690 transitions. [2022-11-23 02:01:19,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 172.5) internal successors, (690), 4 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:19,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 394.0) internal successors, (1970), 5 states have internal predecessors, (1970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:19,869 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 394.0) internal successors, (1970), 5 states have internal predecessors, (1970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:19,869 INFO L175 Difference]: Start difference. First operand has 41 places, 38 transitions, 178 flow. Second operand 4 states and 690 transitions. [2022-11-23 02:01:19,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 37 transitions, 246 flow [2022-11-23 02:01:19,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 37 transitions, 234 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 02:01:19,874 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 184 flow [2022-11-23 02:01:19,874 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=394, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=184, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2022-11-23 02:01:19,875 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, 10 predicate places. [2022-11-23 02:01:19,875 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 184 flow [2022-11-23 02:01:19,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 167.4) internal successors, (837), 5 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:19,876 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:01:19,876 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2022-11-23 02:01:19,889 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a05fee0-44d4-4950-8464-469ae9077216/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-23 02:01:20,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a05fee0-44d4-4950-8464-469ae9077216/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:01:20,083 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 02:01:20,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:01:20,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1728921905, now seen corresponding path program 1 times [2022-11-23 02:01:20,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:01:20,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984707743] [2022-11-23 02:01:20,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:01:20,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:01:20,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:20,256 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:01:20,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:01:20,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984707743] [2022-11-23 02:01:20,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984707743] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:01:20,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508253429] [2022-11-23 02:01:20,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:01:20,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:01:20,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a05fee0-44d4-4950-8464-469ae9077216/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:01:20,260 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a05fee0-44d4-4950-8464-469ae9077216/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:01:20,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a05fee0-44d4-4950-8464-469ae9077216/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 02:01:20,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:20,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 02:01:20,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:01:20,422 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:01:20,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:01:20,506 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:01:20,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508253429] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:01:20,507 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:01:20,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-23 02:01:20,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546655433] [2022-11-23 02:01:20,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:01:20,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 02:01:20,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:01:20,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 02:01:20,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-23 02:01:20,642 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 394 [2022-11-23 02:01:20,646 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 184 flow. Second operand has 13 states, 13 states have (on average 173.15384615384616) internal successors, (2251), 13 states have internal predecessors, (2251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:20,646 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:01:20,646 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 394 [2022-11-23 02:01:20,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:01:21,993 INFO L130 PetriNetUnfolder]: 3212/5387 cut-off events. [2022-11-23 02:01:21,993 INFO L131 PetriNetUnfolder]: For 583/583 co-relation queries the response was YES. [2022-11-23 02:01:22,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13262 conditions, 5387 events. 3212/5387 cut-off events. For 583/583 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 35590 event pairs, 2020 based on Foata normal form. 12/3863 useless extension candidates. Maximal degree in co-relation 13244. Up to 1501 conditions per place. [2022-11-23 02:01:22,043 INFO L137 encePairwiseOnDemand]: 389/394 looper letters, 194 selfloop transitions, 31 changer transitions 0/226 dead transitions. [2022-11-23 02:01:22,043 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 226 transitions, 1276 flow [2022-11-23 02:01:22,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 02:01:22,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-23 02:01:22,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2285 transitions. [2022-11-23 02:01:22,051 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4832910321489002 [2022-11-23 02:01:22,051 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2285 transitions. [2022-11-23 02:01:22,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2285 transitions. [2022-11-23 02:01:22,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:01:22,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2285 transitions. [2022-11-23 02:01:22,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 190.41666666666666) internal successors, (2285), 12 states have internal predecessors, (2285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:22,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 394.0) internal successors, (5122), 13 states have internal predecessors, (5122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:22,074 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 394.0) internal successors, (5122), 13 states have internal predecessors, (5122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:22,075 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 184 flow. Second operand 12 states and 2285 transitions. [2022-11-23 02:01:22,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 226 transitions, 1276 flow [2022-11-23 02:01:22,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 226 transitions, 1247 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-11-23 02:01:22,091 INFO L231 Difference]: Finished difference. Result has 56 places, 55 transitions, 383 flow [2022-11-23 02:01:22,091 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=394, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=383, PETRI_PLACES=56, PETRI_TRANSITIONS=55} [2022-11-23 02:01:22,094 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, 24 predicate places. [2022-11-23 02:01:22,094 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 55 transitions, 383 flow [2022-11-23 02:01:22,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 173.15384615384616) internal successors, (2251), 13 states have internal predecessors, (2251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:22,096 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:01:22,096 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:01:22,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a05fee0-44d4-4950-8464-469ae9077216/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 02:01:22,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a05fee0-44d4-4950-8464-469ae9077216/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:01:22,303 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 02:01:22,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:01:22,304 INFO L85 PathProgramCache]: Analyzing trace with hash 398034538, now seen corresponding path program 1 times [2022-11-23 02:01:22,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:01:22,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261823998] [2022-11-23 02:01:22,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:01:22,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:01:22,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:22,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 02:01:22,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:01:22,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261823998] [2022-11-23 02:01:22,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261823998] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:01:22,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588699539] [2022-11-23 02:01:22,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:01:22,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:01:22,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a05fee0-44d4-4950-8464-469ae9077216/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:01:22,468 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a05fee0-44d4-4950-8464-469ae9077216/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:01:22,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a05fee0-44d4-4950-8464-469ae9077216/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 02:01:22,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:22,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 02:01:22,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:01:22,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 02:01:22,606 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:01:22,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588699539] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:01:22,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:01:22,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2022-11-23 02:01:22,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956872418] [2022-11-23 02:01:22,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:01:22,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:01:22,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:01:22,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:01:22,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:01:22,614 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 394 [2022-11-23 02:01:22,616 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 55 transitions, 383 flow. Second operand has 3 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:22,616 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:01:22,616 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 394 [2022-11-23 02:01:22,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:01:23,251 INFO L130 PetriNetUnfolder]: 2232/3947 cut-off events. [2022-11-23 02:01:23,251 INFO L131 PetriNetUnfolder]: For 588/608 co-relation queries the response was YES. [2022-11-23 02:01:23,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9482 conditions, 3947 events. 2232/3947 cut-off events. For 588/608 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 26689 event pairs, 1440 based on Foata normal form. 0/3217 useless extension candidates. Maximal degree in co-relation 9459. Up to 3867 conditions per place. [2022-11-23 02:01:23,279 INFO L137 encePairwiseOnDemand]: 391/394 looper letters, 48 selfloop transitions, 1 changer transitions 3/53 dead transitions. [2022-11-23 02:01:23,280 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 53 transitions, 479 flow [2022-11-23 02:01:23,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:01:23,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:01:23,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 551 transitions. [2022-11-23 02:01:23,282 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46615905245346867 [2022-11-23 02:01:23,283 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 551 transitions. [2022-11-23 02:01:23,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 551 transitions. [2022-11-23 02:01:23,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:01:23,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 551 transitions. [2022-11-23 02:01:23,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 183.66666666666666) internal successors, (551), 3 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:23,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 394.0) internal successors, (1576), 4 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:23,289 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 394.0) internal successors, (1576), 4 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:23,290 INFO L175 Difference]: Start difference. First operand has 56 places, 55 transitions, 383 flow. Second operand 3 states and 551 transitions. [2022-11-23 02:01:23,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 53 transitions, 479 flow [2022-11-23 02:01:23,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 53 transitions, 389 flow, removed 26 selfloop flow, removed 5 redundant places. [2022-11-23 02:01:23,298 INFO L231 Difference]: Finished difference. Result has 51 places, 50 transitions, 280 flow [2022-11-23 02:01:23,298 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=394, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=280, PETRI_PLACES=51, PETRI_TRANSITIONS=50} [2022-11-23 02:01:23,299 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, 19 predicate places. [2022-11-23 02:01:23,300 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 50 transitions, 280 flow [2022-11-23 02:01:23,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:23,300 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:01:23,300 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:01:23,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a05fee0-44d4-4950-8464-469ae9077216/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 02:01:23,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a05fee0-44d4-4950-8464-469ae9077216/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-23 02:01:23,507 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 02:01:23,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:01:23,508 INFO L85 PathProgramCache]: Analyzing trace with hash -306723734, now seen corresponding path program 1 times [2022-11-23 02:01:23,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:01:23,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895564293] [2022-11-23 02:01:23,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:01:23,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:01:23,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:23,611 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 02:01:23,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:01:23,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895564293] [2022-11-23 02:01:23,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895564293] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:01:23,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966379570] [2022-11-23 02:01:23,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:01:23,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:01:23,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a05fee0-44d4-4950-8464-469ae9077216/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:01:23,616 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a05fee0-44d4-4950-8464-469ae9077216/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:01:23,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a05fee0-44d4-4950-8464-469ae9077216/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 02:01:23,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:23,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-23 02:01:23,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:01:23,876 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:01:23,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:01:23,979 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:01:23,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966379570] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:01:23,980 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:01:23,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 6, 6] total 12 [2022-11-23 02:01:23,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359950444] [2022-11-23 02:01:23,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:01:23,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 02:01:23,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:01:23,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 02:01:23,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2022-11-23 02:01:24,364 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 394 [2022-11-23 02:01:24,368 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 50 transitions, 280 flow. Second operand has 13 states, 13 states have (on average 162.92307692307693) internal successors, (2118), 13 states have internal predecessors, (2118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:24,368 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:01:24,368 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 394 [2022-11-23 02:01:24,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:01:25,381 INFO L130 PetriNetUnfolder]: 2292/3917 cut-off events. [2022-11-23 02:01:25,381 INFO L131 PetriNetUnfolder]: For 524/526 co-relation queries the response was YES. [2022-11-23 02:01:25,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9553 conditions, 3917 events. 2292/3917 cut-off events. For 524/526 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 24979 event pairs, 387 based on Foata normal form. 14/3421 useless extension candidates. Maximal degree in co-relation 9530. Up to 1575 conditions per place. [2022-11-23 02:01:25,403 INFO L137 encePairwiseOnDemand]: 385/394 looper letters, 51 selfloop transitions, 17 changer transitions 17/86 dead transitions. [2022-11-23 02:01:25,403 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 86 transitions, 551 flow [2022-11-23 02:01:25,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 02:01:25,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-23 02:01:25,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1670 transitions. [2022-11-23 02:01:25,411 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42385786802030456 [2022-11-23 02:01:25,411 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1670 transitions. [2022-11-23 02:01:25,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1670 transitions. [2022-11-23 02:01:25,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:01:25,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1670 transitions. [2022-11-23 02:01:25,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 167.0) internal successors, (1670), 10 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:25,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 394.0) internal successors, (4334), 11 states have internal predecessors, (4334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:25,430 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 394.0) internal successors, (4334), 11 states have internal predecessors, (4334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:25,430 INFO L175 Difference]: Start difference. First operand has 51 places, 50 transitions, 280 flow. Second operand 10 states and 1670 transitions. [2022-11-23 02:01:25,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 86 transitions, 551 flow [2022-11-23 02:01:25,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 86 transitions, 550 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 02:01:25,439 INFO L231 Difference]: Finished difference. Result has 59 places, 51 transitions, 331 flow [2022-11-23 02:01:25,441 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=394, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=331, PETRI_PLACES=59, PETRI_TRANSITIONS=51} [2022-11-23 02:01:25,442 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, 27 predicate places. [2022-11-23 02:01:25,442 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 51 transitions, 331 flow [2022-11-23 02:01:25,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 162.92307692307693) internal successors, (2118), 13 states have internal predecessors, (2118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:25,443 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:01:25,444 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2022-11-23 02:01:25,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a05fee0-44d4-4950-8464-469ae9077216/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-23 02:01:25,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a05fee0-44d4-4950-8464-469ae9077216/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-23 02:01:25,651 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 02:01:25,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:01:25,651 INFO L85 PathProgramCache]: Analyzing trace with hash 335859953, now seen corresponding path program 2 times [2022-11-23 02:01:25,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:01:25,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673936625] [2022-11-23 02:01:25,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:01:25,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:01:25,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:25,789 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-23 02:01:25,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:01:25,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673936625] [2022-11-23 02:01:25,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673936625] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:01:25,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414516659] [2022-11-23 02:01:25,790 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 02:01:25,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:01:25,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a05fee0-44d4-4950-8464-469ae9077216/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:01:25,796 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a05fee0-44d4-4950-8464-469ae9077216/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:01:25,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a05fee0-44d4-4950-8464-469ae9077216/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 02:01:25,912 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-23 02:01:25,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:01:25,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 02:01:25,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:01:25,953 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-23 02:01:25,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:01:25,997 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-23 02:01:25,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414516659] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:01:25,998 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:01:25,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 5 [2022-11-23 02:01:25,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014861041] [2022-11-23 02:01:25,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:01:26,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 02:01:26,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:01:26,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 02:01:26,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:01:26,063 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 394 [2022-11-23 02:01:26,065 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 51 transitions, 331 flow. Second operand has 7 states, 7 states have (on average 175.85714285714286) internal successors, (1231), 7 states have internal predecessors, (1231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:26,066 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:01:26,066 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 394 [2022-11-23 02:01:26,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:01:26,968 INFO L130 PetriNetUnfolder]: 3045/5051 cut-off events. [2022-11-23 02:01:26,968 INFO L131 PetriNetUnfolder]: For 1680/1698 co-relation queries the response was YES. [2022-11-23 02:01:26,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14014 conditions, 5051 events. 3045/5051 cut-off events. For 1680/1698 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 32146 event pairs, 351 based on Foata normal form. 0/4412 useless extension candidates. Maximal degree in co-relation 13987. Up to 1404 conditions per place. [2022-11-23 02:01:26,991 INFO L137 encePairwiseOnDemand]: 389/394 looper letters, 34 selfloop transitions, 1 changer transitions 50/85 dead transitions. [2022-11-23 02:01:26,991 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 85 transitions, 605 flow [2022-11-23 02:01:26,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 02:01:26,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-23 02:01:26,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1267 transitions. [2022-11-23 02:01:26,996 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4593908629441624 [2022-11-23 02:01:26,997 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1267 transitions. [2022-11-23 02:01:26,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1267 transitions. [2022-11-23 02:01:26,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:01:26,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1267 transitions. [2022-11-23 02:01:27,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 181.0) internal successors, (1267), 7 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:27,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 394.0) internal successors, (3152), 8 states have internal predecessors, (3152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:27,019 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 394.0) internal successors, (3152), 8 states have internal predecessors, (3152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:27,028 INFO L175 Difference]: Start difference. First operand has 59 places, 51 transitions, 331 flow. Second operand 7 states and 1267 transitions. [2022-11-23 02:01:27,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 85 transitions, 605 flow [2022-11-23 02:01:27,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 85 transitions, 566 flow, removed 12 selfloop flow, removed 4 redundant places. [2022-11-23 02:01:27,043 INFO L231 Difference]: Finished difference. Result has 58 places, 35 transitions, 252 flow [2022-11-23 02:01:27,043 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=394, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=252, PETRI_PLACES=58, PETRI_TRANSITIONS=35} [2022-11-23 02:01:27,044 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, 26 predicate places. [2022-11-23 02:01:27,044 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 35 transitions, 252 flow [2022-11-23 02:01:27,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 175.85714285714286) internal successors, (1231), 7 states have internal predecessors, (1231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:27,046 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:01:27,046 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1] [2022-11-23 02:01:27,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a05fee0-44d4-4950-8464-469ae9077216/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-23 02:01:27,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a05fee0-44d4-4950-8464-469ae9077216/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:01:27,253 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 02:01:27,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:01:27,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1446570225, now seen corresponding path program 2 times [2022-11-23 02:01:27,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:01:27,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954117429] [2022-11-23 02:01:27,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:01:27,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:01:27,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:27,507 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:01:27,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:01:27,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954117429] [2022-11-23 02:01:27,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954117429] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:01:27,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910545802] [2022-11-23 02:01:27,508 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 02:01:27,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:01:27,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a05fee0-44d4-4950-8464-469ae9077216/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:01:27,512 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a05fee0-44d4-4950-8464-469ae9077216/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:01:27,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a05fee0-44d4-4950-8464-469ae9077216/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-23 02:01:27,628 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-23 02:01:27,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:01:27,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 02:01:27,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:01:27,673 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-23 02:01:27,673 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:01:27,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910545802] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:01:27,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:01:27,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 14 [2022-11-23 02:01:27,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492019445] [2022-11-23 02:01:27,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:01:27,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:01:27,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:01:27,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:01:27,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2022-11-23 02:01:27,750 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 394 [2022-11-23 02:01:27,751 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 35 transitions, 252 flow. Second operand has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:27,752 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:01:27,752 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 394 [2022-11-23 02:01:27,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:01:27,787 INFO L130 PetriNetUnfolder]: 12/45 cut-off events. [2022-11-23 02:01:27,787 INFO L131 PetriNetUnfolder]: For 125/125 co-relation queries the response was YES. [2022-11-23 02:01:27,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204 conditions, 45 events. 12/45 cut-off events. For 125/125 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 69 event pairs, 0 based on Foata normal form. 2/47 useless extension candidates. Maximal degree in co-relation 185. Up to 45 conditions per place. [2022-11-23 02:01:27,788 INFO L137 encePairwiseOnDemand]: 392/394 looper letters, 0 selfloop transitions, 0 changer transitions 34/34 dead transitions. [2022-11-23 02:01:27,788 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 34 transitions, 296 flow [2022-11-23 02:01:27,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:01:27,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:01:27,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 521 transitions. [2022-11-23 02:01:27,791 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4407783417935702 [2022-11-23 02:01:27,791 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 521 transitions. [2022-11-23 02:01:27,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 521 transitions. [2022-11-23 02:01:27,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:01:27,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 521 transitions. [2022-11-23 02:01:27,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:27,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 394.0) internal successors, (1576), 4 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:27,797 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 394.0) internal successors, (1576), 4 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:27,797 INFO L175 Difference]: Start difference. First operand has 58 places, 35 transitions, 252 flow. Second operand 3 states and 521 transitions. [2022-11-23 02:01:27,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 34 transitions, 296 flow [2022-11-23 02:01:27,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 34 transitions, 204 flow, removed 2 selfloop flow, removed 16 redundant places. [2022-11-23 02:01:27,800 INFO L231 Difference]: Finished difference. Result has 23 places, 0 transitions, 0 flow [2022-11-23 02:01:27,800 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=394, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=23, PETRI_TRANSITIONS=0} [2022-11-23 02:01:27,800 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, -9 predicate places. [2022-11-23 02:01:27,801 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 0 transitions, 0 flow [2022-11-23 02:01:27,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:27,804 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2022-11-23 02:01:27,805 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2022-11-23 02:01:27,805 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2022-11-23 02:01:27,806 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2022-11-23 02:01:27,806 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2022-11-23 02:01:27,806 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2022-11-23 02:01:27,806 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2022-11-23 02:01:27,807 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2022-11-23 02:01:27,807 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2022-11-23 02:01:27,807 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2022-11-23 02:01:27,807 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 18 remaining) [2022-11-23 02:01:27,807 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 18 remaining) [2022-11-23 02:01:27,808 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2022-11-23 02:01:27,808 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2022-11-23 02:01:27,808 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2022-11-23 02:01:27,808 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2022-11-23 02:01:27,809 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2022-11-23 02:01:27,809 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2022-11-23 02:01:27,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a05fee0-44d4-4950-8464-469ae9077216/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-23 02:01:28,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a05fee0-44d4-4950-8464-469ae9077216/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-23 02:01:28,016 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-23 02:01:28,021 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-23 02:01:28,021 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 02:01:28,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:01:28 BasicIcfg [2022-11-23 02:01:28,025 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 02:01:28,026 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 02:01:28,026 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 02:01:28,027 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 02:01:28,027 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:01:03" (3/4) ... [2022-11-23 02:01:28,030 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-23 02:01:28,037 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-23 02:01:28,037 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-23 02:01:28,043 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2022-11-23 02:01:28,044 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-23 02:01:28,044 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-23 02:01:28,044 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 02:01:28,093 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a05fee0-44d4-4950-8464-469ae9077216/bin/uautomizer-QkZJyEgLgS/witness.graphml [2022-11-23 02:01:28,093 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 02:01:28,094 INFO L158 Benchmark]: Toolchain (without parser) took 25916.35ms. Allocated memory was 184.5MB in the beginning and 453.0MB in the end (delta: 268.4MB). Free memory was 144.3MB in the beginning and 181.5MB in the end (delta: -37.3MB). Peak memory consumption was 233.7MB. Max. memory is 16.1GB. [2022-11-23 02:01:28,094 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 121.6MB. Free memory is still 64.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 02:01:28,094 INFO L158 Benchmark]: CACSL2BoogieTranslator took 299.49ms. Allocated memory is still 184.5MB. Free memory was 143.8MB in the beginning and 132.2MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-23 02:01:28,095 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.06ms. Allocated memory is still 184.5MB. Free memory was 132.2MB in the beginning and 130.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 02:01:28,095 INFO L158 Benchmark]: Boogie Preprocessor took 63.49ms. Allocated memory is still 184.5MB. Free memory was 130.1MB in the beginning and 128.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 02:01:28,096 INFO L158 Benchmark]: RCFGBuilder took 1042.74ms. Allocated memory is still 184.5MB. Free memory was 128.0MB in the beginning and 152.0MB in the end (delta: -24.0MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2022-11-23 02:01:28,096 INFO L158 Benchmark]: TraceAbstraction took 24379.88ms. Allocated memory was 184.5MB in the beginning and 453.0MB in the end (delta: 268.4MB). Free memory was 151.2MB in the beginning and 185.7MB in the end (delta: -34.5MB). Peak memory consumption was 233.7MB. Max. memory is 16.1GB. [2022-11-23 02:01:28,097 INFO L158 Benchmark]: Witness Printer took 66.85ms. Allocated memory is still 453.0MB. Free memory was 185.7MB in the beginning and 181.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-23 02:01:28,099 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 121.6MB. Free memory is still 64.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 299.49ms. Allocated memory is still 184.5MB. Free memory was 143.8MB in the beginning and 132.2MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.06ms. Allocated memory is still 184.5MB. Free memory was 132.2MB in the beginning and 130.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.49ms. Allocated memory is still 184.5MB. Free memory was 130.1MB in the beginning and 128.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1042.74ms. Allocated memory is still 184.5MB. Free memory was 128.0MB in the beginning and 152.0MB in the end (delta: -24.0MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * TraceAbstraction took 24379.88ms. Allocated memory was 184.5MB in the beginning and 453.0MB in the end (delta: 268.4MB). Free memory was 151.2MB in the beginning and 185.7MB in the end (delta: -34.5MB). Peak memory consumption was 233.7MB. Max. memory is 16.1GB. * Witness Printer took 66.85ms. Allocated memory is still 453.0MB. Free memory was 185.7MB in the beginning and 181.5MB 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: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10.0s, 174 PlacesBefore, 32 PlacesAfterwards, 181 TransitionsBefore, 30 TransitionsAfterwards, 942 CoEnabledTransitionPairs, 7 FixpointIterations, 130 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 22 TrivialYvCompositions, 4 ConcurrentYvCompositions, 9 ChoiceCompositions, 192 TotalNumberOfCompositions, 1250 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1122, independent: 1078, independent conditional: 0, independent unconditional: 1078, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 565, independent: 552, independent conditional: 0, independent unconditional: 552, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 565, independent: 549, independent conditional: 0, independent unconditional: 549, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 16, independent: 3, independent conditional: 0, independent unconditional: 3, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 105, independent: 26, independent conditional: 0, independent unconditional: 26, dependent: 79, dependent conditional: 0, dependent unconditional: 79, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1122, independent: 526, independent conditional: 0, independent unconditional: 526, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 565, unknown conditional: 0, unknown unconditional: 565] , Statistics on independence cache: Total cache size (in pairs): 60, Positive cache size: 53, Positive conditional cache size: 0, Positive unconditional cache size: 53, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 53]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 53]: 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: 73]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 73]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 117]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 117]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 117]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 117]: 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 5 procedures, 218 locations, 18 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: 24.2s, OverallIterations: 12, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 8.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 10.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1721 SdHoareTripleChecker+Valid, 2.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1398 mSDsluCounter, 385 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 245 mSDsCounter, 163 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1938 IncrementalHoareTripleChecker+Invalid, 2101 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 163 mSolverCounterUnsat, 140 mSDtfsCounter, 1938 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 137 GetRequests, 57 SyntacticMatches, 3 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=383occurred in iteration=8, InterpolantAutomatonStates: 61, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 147 NumberOfCodeBlocks, 127 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 154 ConstructedInterpolants, 0 QuantifiedInterpolants, 534 SizeOfPredicates, 17 NumberOfNonLiveVariables, 1229 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 24 InterpolantComputations, 8 PerfectInterpolantSequences, 92/206 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 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-23 02:01:28,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a05fee0-44d4-4950-8464-469ae9077216/bin/uautomizer-QkZJyEgLgS/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