./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a87860dbf851812846995aa918799e2b576306268e8c461660702f868d3b2804 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 10:49:35,920 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:49:35,922 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:49:35,965 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:49:35,965 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:49:35,969 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:49:35,971 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:49:35,974 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:49:35,976 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:49:35,978 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:49:35,979 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:49:35,980 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:49:35,980 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:49:35,981 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:49:35,982 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:49:35,983 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:49:35,984 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:49:35,985 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:49:35,987 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:49:35,988 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:49:35,990 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:49:35,991 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:49:35,992 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:49:35,993 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:49:35,997 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:49:35,997 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:49:35,998 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:49:35,999 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:49:35,999 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:49:36,000 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:49:36,001 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:49:36,002 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:49:36,002 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:49:36,003 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:49:36,004 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:49:36,005 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:49:36,006 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:49:36,006 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:49:36,006 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:49:36,007 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:49:36,008 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:49:36,009 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 10:49:36,029 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:49:36,029 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:49:36,029 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:49:36,030 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:49:36,030 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:49:36,031 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:49:36,031 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:49:36,032 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:49:36,032 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:49:36,032 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:49:36,033 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:49:36,033 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 10:49:36,033 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:49:36,033 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:49:36,034 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:49:36,034 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:49:36,034 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:49:36,034 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:49:36,035 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 10:49:36,035 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:49:36,035 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:49:36,035 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:49:36,036 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:49:36,036 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:49:36,036 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:49:36,037 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:49:36,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:49:36,037 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:49:36,037 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:49:36,038 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:49:36,038 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:49:36,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:49:36,038 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:49:36,038 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:49:36,039 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:49:36,039 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a87860dbf851812846995aa918799e2b576306268e8c461660702f868d3b2804 [2022-11-20 10:49:36,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:49:36,347 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:49:36,350 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:49:36,351 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:49:36,352 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:49:36,353 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c [2022-11-20 10:49:39,443 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:49:39,757 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:49:39,758 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c [2022-11-20 10:49:39,766 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/data/73216ee38/af4c84c09c214584be2631edf4976e78/FLAG454c8ecf8 [2022-11-20 10:49:39,786 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/data/73216ee38/af4c84c09c214584be2631edf4976e78 [2022-11-20 10:49:39,792 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:49:39,794 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:49:39,798 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:49:39,798 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:49:39,802 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:49:39,802 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:49:39" (1/1) ... [2022-11-20 10:49:39,803 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5056dc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:39, skipping insertion in model container [2022-11-20 10:49:39,804 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:49:39" (1/1) ... [2022-11-20 10:49:39,811 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:49:39,842 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:49:40,082 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_d22cab48-a344-444d-8d2f-ef8d8a552c59/sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c[2553,2566] [2022-11-20 10:49:40,088 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:49:40,099 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:49:40,133 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_d22cab48-a344-444d-8d2f-ef8d8a552c59/sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c[2553,2566] [2022-11-20 10:49:40,137 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:49:40,152 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:49:40,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:40 WrapperNode [2022-11-20 10:49:40,153 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:49:40,154 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:49:40,154 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:49:40,155 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:49:40,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:40" (1/1) ... [2022-11-20 10:49:40,180 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:40" (1/1) ... [2022-11-20 10:49:40,199 INFO L138 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 103 [2022-11-20 10:49:40,199 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:49:40,200 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:49:40,200 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:49:40,200 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:49:40,208 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:40" (1/1) ... [2022-11-20 10:49:40,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:40" (1/1) ... [2022-11-20 10:49:40,212 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:40" (1/1) ... [2022-11-20 10:49:40,212 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:40" (1/1) ... [2022-11-20 10:49:40,220 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:40" (1/1) ... [2022-11-20 10:49:40,224 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:40" (1/1) ... [2022-11-20 10:49:40,226 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:40" (1/1) ... [2022-11-20 10:49:40,227 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:40" (1/1) ... [2022-11-20 10:49:40,230 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:49:40,231 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:49:40,231 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:49:40,231 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:49:40,232 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:40" (1/1) ... [2022-11-20 10:49:40,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:49:40,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:49:40,276 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:49:40,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:49:40,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:49:40,333 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 10:49:40,333 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 10:49:40,333 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 10:49:40,333 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 10:49:40,333 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 10:49:40,333 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 10:49:40,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:49:40,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:49:40,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 10:49:40,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 10:49:40,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 10:49:40,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 10:49:40,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:49:40,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:49:40,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 10:49:40,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:49:40,337 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 10:49:40,446 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:49:40,449 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:49:40,893 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:49:40,980 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:49:40,980 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-20 10:49:40,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:49:40 BoogieIcfgContainer [2022-11-20 10:49:40,983 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:49:40,999 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:49:40,999 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:49:41,003 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:49:41,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:49:39" (1/3) ... [2022-11-20 10:49:41,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ee2c18d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:49:41, skipping insertion in model container [2022-11-20 10:49:41,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:40" (2/3) ... [2022-11-20 10:49:41,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ee2c18d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:49:41, skipping insertion in model container [2022-11-20 10:49:41,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:49:40" (3/3) ... [2022-11-20 10:49:41,012 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-max-array.wvr.c [2022-11-20 10:49:41,020 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 10:49:41,032 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:49:41,033 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-20 10:49:41,033 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 10:49:41,163 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 10:49:41,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 168 transitions, 360 flow [2022-11-20 10:49:41,334 INFO L130 PetriNetUnfolder]: 12/165 cut-off events. [2022-11-20 10:49:41,335 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 10:49:41,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 165 events. 12/165 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 132 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 124. Up to 2 conditions per place. [2022-11-20 10:49:41,341 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 168 transitions, 360 flow [2022-11-20 10:49:41,347 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 144 transitions, 303 flow [2022-11-20 10:49:41,357 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:49:41,364 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;@949ba98, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:49:41,364 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-20 10:49:41,382 INFO L130 PetriNetUnfolder]: 3/63 cut-off events. [2022-11-20 10:49:41,382 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 10:49:41,382 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:49:41,383 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:41,383 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 10:49:41,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:41,389 INFO L85 PathProgramCache]: Analyzing trace with hash 47761478, now seen corresponding path program 1 times [2022-11-20 10:49:41,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:41,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11707163] [2022-11-20 10:49:41,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:41,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:41,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:41,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:41,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:41,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11707163] [2022-11-20 10:49:41,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11707163] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:41,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:49:41,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:49:41,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064244695] [2022-11-20 10:49:41,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:41,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:49:41,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:42,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:49:42,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:49:42,011 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 168 [2022-11-20 10:49:42,019 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 144 transitions, 303 flow. Second operand has 4 states, 4 states have (on average 139.5) internal successors, (558), 4 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:42,019 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:49:42,019 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 168 [2022-11-20 10:49:42,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:49:42,378 INFO L130 PetriNetUnfolder]: 79/583 cut-off events. [2022-11-20 10:49:42,379 INFO L131 PetriNetUnfolder]: For 86/88 co-relation queries the response was YES. [2022-11-20 10:49:42,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 772 conditions, 583 events. 79/583 cut-off events. For 86/88 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2904 event pairs, 30 based on Foata normal form. 72/535 useless extension candidates. Maximal degree in co-relation 285. Up to 69 conditions per place. [2022-11-20 10:49:42,393 INFO L137 encePairwiseOnDemand]: 155/168 looper letters, 32 selfloop transitions, 4 changer transitions 3/153 dead transitions. [2022-11-20 10:49:42,395 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 153 transitions, 408 flow [2022-11-20 10:49:42,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:49:42,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:49:42,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 740 transitions. [2022-11-20 10:49:42,421 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8809523809523809 [2022-11-20 10:49:42,422 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 740 transitions. [2022-11-20 10:49:42,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 740 transitions. [2022-11-20 10:49:42,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:49:42,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 740 transitions. [2022-11-20 10:49:42,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 148.0) internal successors, (740), 5 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:42,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 168.0) internal successors, (1008), 6 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:42,453 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 168.0) internal successors, (1008), 6 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:42,455 INFO L175 Difference]: Start difference. First operand has 143 places, 144 transitions, 303 flow. Second operand 5 states and 740 transitions. [2022-11-20 10:49:42,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 153 transitions, 408 flow [2022-11-20 10:49:42,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 153 transitions, 390 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 10:49:42,470 INFO L231 Difference]: Finished difference. Result has 145 places, 137 transitions, 304 flow [2022-11-20 10:49:42,472 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=304, PETRI_PLACES=145, PETRI_TRANSITIONS=137} [2022-11-20 10:49:42,479 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 2 predicate places. [2022-11-20 10:49:42,479 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 137 transitions, 304 flow [2022-11-20 10:49:42,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 139.5) internal successors, (558), 4 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:42,481 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:49:42,482 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:42,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:49:42,482 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 10:49:42,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:42,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1591896996, now seen corresponding path program 1 times [2022-11-20 10:49:42,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:42,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859156577] [2022-11-20 10:49:42,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:42,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:42,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:42,719 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:42,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:42,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859156577] [2022-11-20 10:49:42,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859156577] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:49:42,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236243458] [2022-11-20 10:49:42,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:42,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:49:42,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:49:42,726 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:49:42,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:49:42,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:42,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:49:42,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:49:43,014 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:43,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:49:43,109 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:43,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236243458] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:49:43,110 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:49:43,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-20 10:49:43,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368619719] [2022-11-20 10:49:43,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:49:43,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:49:43,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:43,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:49:43,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:49:43,120 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 168 [2022-11-20 10:49:43,122 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 137 transitions, 304 flow. Second operand has 12 states, 12 states have (on average 140.66666666666666) internal successors, (1688), 12 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:43,122 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:49:43,123 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 168 [2022-11-20 10:49:43,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:49:43,726 INFO L130 PetriNetUnfolder]: 196/1376 cut-off events. [2022-11-20 10:49:43,726 INFO L131 PetriNetUnfolder]: For 71/76 co-relation queries the response was YES. [2022-11-20 10:49:43,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1786 conditions, 1376 events. 196/1376 cut-off events. For 71/76 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 9112 event pairs, 75 based on Foata normal form. 3/1094 useless extension candidates. Maximal degree in co-relation 1384. Up to 70 conditions per place. [2022-11-20 10:49:43,744 INFO L137 encePairwiseOnDemand]: 161/168 looper letters, 68 selfloop transitions, 18 changer transitions 0/200 dead transitions. [2022-11-20 10:49:43,745 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 200 transitions, 648 flow [2022-11-20 10:49:43,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 10:49:43,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 10:49:43,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2573 transitions. [2022-11-20 10:49:43,751 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8508597883597884 [2022-11-20 10:49:43,751 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2573 transitions. [2022-11-20 10:49:43,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2573 transitions. [2022-11-20 10:49:43,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:49:43,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2573 transitions. [2022-11-20 10:49:43,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 142.94444444444446) internal successors, (2573), 18 states have internal predecessors, (2573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:43,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 168.0) internal successors, (3192), 19 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:43,768 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 168.0) internal successors, (3192), 19 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:43,769 INFO L175 Difference]: Start difference. First operand has 145 places, 137 transitions, 304 flow. Second operand 18 states and 2573 transitions. [2022-11-20 10:49:43,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 200 transitions, 648 flow [2022-11-20 10:49:43,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 200 transitions, 646 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:49:43,777 INFO L231 Difference]: Finished difference. Result has 162 places, 149 transitions, 408 flow [2022-11-20 10:49:43,778 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=408, PETRI_PLACES=162, PETRI_TRANSITIONS=149} [2022-11-20 10:49:43,779 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 19 predicate places. [2022-11-20 10:49:43,779 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 149 transitions, 408 flow [2022-11-20 10:49:43,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 140.66666666666666) internal successors, (1688), 12 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:43,780 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:49:43,781 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:43,795 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 10:49:43,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:49:43,987 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 10:49:43,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:43,987 INFO L85 PathProgramCache]: Analyzing trace with hash 2104166939, now seen corresponding path program 1 times [2022-11-20 10:49:43,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:43,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708939879] [2022-11-20 10:49:43,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:43,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:44,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:44,103 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:44,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:44,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708939879] [2022-11-20 10:49:44,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708939879] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:49:44,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659137726] [2022-11-20 10:49:44,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:44,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:49:44,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:49:44,106 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:49:44,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 10:49:44,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:44,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:49:44,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:49:44,297 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:44,297 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:49:44,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659137726] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:44,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:49:44,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 10:49:44,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787273859] [2022-11-20 10:49:44,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:44,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:49:44,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:44,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:49:44,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:49:44,306 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 168 [2022-11-20 10:49:44,308 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 149 transitions, 408 flow. Second operand has 6 states, 6 states have (on average 140.33333333333334) internal successors, (842), 6 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:44,309 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:49:44,309 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 168 [2022-11-20 10:49:44,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:49:44,672 INFO L130 PetriNetUnfolder]: 196/1372 cut-off events. [2022-11-20 10:49:44,673 INFO L131 PetriNetUnfolder]: For 107/112 co-relation queries the response was YES. [2022-11-20 10:49:44,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1804 conditions, 1372 events. 196/1372 cut-off events. For 107/112 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 9037 event pairs, 75 based on Foata normal form. 4/1091 useless extension candidates. Maximal degree in co-relation 1427. Up to 240 conditions per place. [2022-11-20 10:49:44,685 INFO L137 encePairwiseOnDemand]: 163/168 looper letters, 33 selfloop transitions, 11 changer transitions 0/158 dead transitions. [2022-11-20 10:49:44,685 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 158 transitions, 503 flow [2022-11-20 10:49:44,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:49:44,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 10:49:44,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1002 transitions. [2022-11-20 10:49:44,688 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8520408163265306 [2022-11-20 10:49:44,688 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1002 transitions. [2022-11-20 10:49:44,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1002 transitions. [2022-11-20 10:49:44,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:49:44,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1002 transitions. [2022-11-20 10:49:44,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 143.14285714285714) internal successors, (1002), 7 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:44,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 168.0) internal successors, (1344), 8 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:44,695 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 168.0) internal successors, (1344), 8 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:44,695 INFO L175 Difference]: Start difference. First operand has 162 places, 149 transitions, 408 flow. Second operand 7 states and 1002 transitions. [2022-11-20 10:49:44,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 158 transitions, 503 flow [2022-11-20 10:49:44,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 158 transitions, 471 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-20 10:49:44,705 INFO L231 Difference]: Finished difference. Result has 158 places, 145 transitions, 371 flow [2022-11-20 10:49:44,705 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=371, PETRI_PLACES=158, PETRI_TRANSITIONS=145} [2022-11-20 10:49:44,707 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 15 predicate places. [2022-11-20 10:49:44,708 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 145 transitions, 371 flow [2022-11-20 10:49:44,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 140.33333333333334) internal successors, (842), 6 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:44,708 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:49:44,709 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:44,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 10:49:44,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-20 10:49:44,914 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 10:49:44,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:44,915 INFO L85 PathProgramCache]: Analyzing trace with hash -2119274129, now seen corresponding path program 1 times [2022-11-20 10:49:44,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:44,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764721954] [2022-11-20 10:49:44,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:44,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:44,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:44,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:44,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:44,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764721954] [2022-11-20 10:49:44,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764721954] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:44,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:49:44,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:49:44,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808937585] [2022-11-20 10:49:44,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:44,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:49:45,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:45,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:49:45,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:49:45,006 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 168 [2022-11-20 10:49:45,006 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 145 transitions, 371 flow. Second operand has 4 states, 4 states have (on average 141.5) internal successors, (566), 4 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:45,007 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:49:45,007 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 168 [2022-11-20 10:49:45,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:49:45,735 INFO L130 PetriNetUnfolder]: 1121/3662 cut-off events. [2022-11-20 10:49:45,736 INFO L131 PetriNetUnfolder]: For 102/132 co-relation queries the response was YES. [2022-11-20 10:49:45,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6011 conditions, 3662 events. 1121/3662 cut-off events. For 102/132 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 30664 event pairs, 450 based on Foata normal form. 0/2877 useless extension candidates. Maximal degree in co-relation 4799. Up to 1066 conditions per place. [2022-11-20 10:49:45,771 INFO L137 encePairwiseOnDemand]: 162/168 looper letters, 36 selfloop transitions, 4 changer transitions 0/167 dead transitions. [2022-11-20 10:49:45,771 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 167 transitions, 506 flow [2022-11-20 10:49:45,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:49:45,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:49:45,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 742 transitions. [2022-11-20 10:49:45,774 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8833333333333333 [2022-11-20 10:49:45,774 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 742 transitions. [2022-11-20 10:49:45,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 742 transitions. [2022-11-20 10:49:45,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:49:45,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 742 transitions. [2022-11-20 10:49:45,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 148.4) internal successors, (742), 5 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:45,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 168.0) internal successors, (1008), 6 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:45,780 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 168.0) internal successors, (1008), 6 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:45,781 INFO L175 Difference]: Start difference. First operand has 158 places, 145 transitions, 371 flow. Second operand 5 states and 742 transitions. [2022-11-20 10:49:45,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 167 transitions, 506 flow [2022-11-20 10:49:45,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 167 transitions, 492 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 10:49:45,788 INFO L231 Difference]: Finished difference. Result has 160 places, 148 transitions, 387 flow [2022-11-20 10:49:45,789 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=387, PETRI_PLACES=160, PETRI_TRANSITIONS=148} [2022-11-20 10:49:45,790 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 17 predicate places. [2022-11-20 10:49:45,791 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 148 transitions, 387 flow [2022-11-20 10:49:45,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 141.5) internal successors, (566), 4 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:45,791 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:49:45,792 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:45,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 10:49:45,792 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 10:49:45,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:45,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1191670954, now seen corresponding path program 1 times [2022-11-20 10:49:45,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:45,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024349806] [2022-11-20 10:49:45,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:45,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:45,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:45,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:45,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:45,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024349806] [2022-11-20 10:49:45,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024349806] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:45,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:49:45,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:49:45,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206099725] [2022-11-20 10:49:45,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:45,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:49:45,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:45,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:49:45,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:49:45,925 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 168 [2022-11-20 10:49:45,926 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 148 transitions, 387 flow. Second operand has 4 states, 4 states have (on average 141.75) internal successors, (567), 4 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:45,926 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:49:45,926 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 168 [2022-11-20 10:49:45,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:49:47,092 INFO L130 PetriNetUnfolder]: 2156/5657 cut-off events. [2022-11-20 10:49:47,093 INFO L131 PetriNetUnfolder]: For 482/487 co-relation queries the response was YES. [2022-11-20 10:49:47,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9907 conditions, 5657 events. 2156/5657 cut-off events. For 482/487 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 52014 event pairs, 965 based on Foata normal form. 0/4772 useless extension candidates. Maximal degree in co-relation 7914. Up to 2031 conditions per place. [2022-11-20 10:49:47,144 INFO L137 encePairwiseOnDemand]: 162/168 looper letters, 35 selfloop transitions, 4 changer transitions 0/169 dead transitions. [2022-11-20 10:49:47,144 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 169 transitions, 517 flow [2022-11-20 10:49:47,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:49:47,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:49:47,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 741 transitions. [2022-11-20 10:49:47,147 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8821428571428571 [2022-11-20 10:49:47,147 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 741 transitions. [2022-11-20 10:49:47,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 741 transitions. [2022-11-20 10:49:47,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:49:47,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 741 transitions. [2022-11-20 10:49:47,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 148.2) internal successors, (741), 5 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:47,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 168.0) internal successors, (1008), 6 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:47,152 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 168.0) internal successors, (1008), 6 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:47,152 INFO L175 Difference]: Start difference. First operand has 160 places, 148 transitions, 387 flow. Second operand 5 states and 741 transitions. [2022-11-20 10:49:47,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 169 transitions, 517 flow [2022-11-20 10:49:47,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 169 transitions, 515 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:49:47,158 INFO L231 Difference]: Finished difference. Result has 166 places, 151 transitions, 415 flow [2022-11-20 10:49:47,158 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=415, PETRI_PLACES=166, PETRI_TRANSITIONS=151} [2022-11-20 10:49:47,159 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 23 predicate places. [2022-11-20 10:49:47,159 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 151 transitions, 415 flow [2022-11-20 10:49:47,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 141.75) internal successors, (567), 4 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:47,160 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:49:47,160 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:47,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 10:49:47,160 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 10:49:47,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:47,161 INFO L85 PathProgramCache]: Analyzing trace with hash -840761546, now seen corresponding path program 1 times [2022-11-20 10:49:47,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:47,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691729183] [2022-11-20 10:49:47,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:47,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:47,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:47,307 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:47,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:47,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691729183] [2022-11-20 10:49:47,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691729183] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:49:47,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556745039] [2022-11-20 10:49:47,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:47,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:49:47,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:49:47,310 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:49:47,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 10:49:47,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:47,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 10:49:47,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:49:47,556 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 10:49:47,556 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:49:47,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556745039] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:47,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:49:47,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-11-20 10:49:47,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769651309] [2022-11-20 10:49:47,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:47,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:49:47,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:47,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:49:47,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-20 10:49:47,560 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 168 [2022-11-20 10:49:47,561 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 151 transitions, 415 flow. Second operand has 7 states, 7 states have (on average 130.57142857142858) internal successors, (914), 7 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:47,562 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:49:47,562 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 168 [2022-11-20 10:49:47,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:49:49,053 INFO L130 PetriNetUnfolder]: 1933/7428 cut-off events. [2022-11-20 10:49:49,053 INFO L131 PetriNetUnfolder]: For 1028/1028 co-relation queries the response was YES. [2022-11-20 10:49:49,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12945 conditions, 7428 events. 1933/7428 cut-off events. For 1028/1028 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 76095 event pairs, 1236 based on Foata normal form. 0/6126 useless extension candidates. Maximal degree in co-relation 12248. Up to 2609 conditions per place. [2022-11-20 10:49:49,126 INFO L137 encePairwiseOnDemand]: 159/168 looper letters, 53 selfloop transitions, 8 changer transitions 0/172 dead transitions. [2022-11-20 10:49:49,127 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 172 transitions, 590 flow [2022-11-20 10:49:49,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:49:49,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 10:49:49,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1078 transitions. [2022-11-20 10:49:49,130 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8020833333333334 [2022-11-20 10:49:49,131 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1078 transitions. [2022-11-20 10:49:49,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1078 transitions. [2022-11-20 10:49:49,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:49:49,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1078 transitions. [2022-11-20 10:49:49,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 134.75) internal successors, (1078), 8 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:49,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 168.0) internal successors, (1512), 9 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:49,140 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 168.0) internal successors, (1512), 9 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:49,140 INFO L175 Difference]: Start difference. First operand has 166 places, 151 transitions, 415 flow. Second operand 8 states and 1078 transitions. [2022-11-20 10:49:49,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 172 transitions, 590 flow [2022-11-20 10:49:49,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 172 transitions, 588 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:49:49,221 INFO L231 Difference]: Finished difference. Result has 175 places, 153 transitions, 447 flow [2022-11-20 10:49:49,222 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=447, PETRI_PLACES=175, PETRI_TRANSITIONS=153} [2022-11-20 10:49:49,222 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 32 predicate places. [2022-11-20 10:49:49,223 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 153 transitions, 447 flow [2022-11-20 10:49:49,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 130.57142857142858) internal successors, (914), 7 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:49,223 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:49:49,223 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:49,235 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-20 10:49:49,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:49:49,430 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 10:49:49,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:49,431 INFO L85 PathProgramCache]: Analyzing trace with hash -797744630, now seen corresponding path program 1 times [2022-11-20 10:49:49,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:49,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811456437] [2022-11-20 10:49:49,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:49,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:49,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:49,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:49,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:49,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811456437] [2022-11-20 10:49:49,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811456437] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:49,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:49:49,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:49:49,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050247130] [2022-11-20 10:49:49,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:49,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:49:49,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:49,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:49:49,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:49:49,610 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 168 [2022-11-20 10:49:49,612 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 153 transitions, 447 flow. Second operand has 8 states, 8 states have (on average 125.375) internal successors, (1003), 8 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:49,613 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:49:49,613 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 168 [2022-11-20 10:49:49,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:49:51,147 INFO L130 PetriNetUnfolder]: 2394/5549 cut-off events. [2022-11-20 10:49:51,147 INFO L131 PetriNetUnfolder]: For 971/1004 co-relation queries the response was YES. [2022-11-20 10:49:51,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10742 conditions, 5549 events. 2394/5549 cut-off events. For 971/1004 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 48689 event pairs, 1914 based on Foata normal form. 33/4660 useless extension candidates. Maximal degree in co-relation 9905. Up to 3377 conditions per place. [2022-11-20 10:49:51,277 INFO L137 encePairwiseOnDemand]: 155/168 looper letters, 70 selfloop transitions, 12 changer transitions 0/191 dead transitions. [2022-11-20 10:49:51,277 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 191 transitions, 703 flow [2022-11-20 10:49:51,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 10:49:51,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 10:49:51,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1430 transitions. [2022-11-20 10:49:51,281 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7738095238095238 [2022-11-20 10:49:51,282 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1430 transitions. [2022-11-20 10:49:51,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1430 transitions. [2022-11-20 10:49:51,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:49:51,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1430 transitions. [2022-11-20 10:49:51,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 130.0) internal successors, (1430), 11 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:51,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 168.0) internal successors, (2016), 12 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:51,291 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 168.0) internal successors, (2016), 12 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:51,291 INFO L175 Difference]: Start difference. First operand has 175 places, 153 transitions, 447 flow. Second operand 11 states and 1430 transitions. [2022-11-20 10:49:51,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 191 transitions, 703 flow [2022-11-20 10:49:51,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 191 transitions, 693 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 10:49:51,299 INFO L231 Difference]: Finished difference. Result has 186 places, 158 transitions, 496 flow [2022-11-20 10:49:51,300 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=496, PETRI_PLACES=186, PETRI_TRANSITIONS=158} [2022-11-20 10:49:51,301 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 43 predicate places. [2022-11-20 10:49:51,301 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 158 transitions, 496 flow [2022-11-20 10:49:51,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 125.375) internal successors, (1003), 8 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:51,302 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:49:51,302 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:51,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 10:49:51,302 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 10:49:51,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:51,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1039720754, now seen corresponding path program 1 times [2022-11-20 10:49:51,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:51,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986143239] [2022-11-20 10:49:51,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:51,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:51,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:51,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:51,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:51,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986143239] [2022-11-20 10:49:51,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986143239] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:51,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:49:51,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:49:51,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957301394] [2022-11-20 10:49:51,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:51,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:49:51,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:51,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:49:51,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:49:51,409 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 168 [2022-11-20 10:49:51,410 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 158 transitions, 496 flow. Second operand has 6 states, 6 states have (on average 134.5) internal successors, (807), 6 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:51,411 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:49:51,411 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 168 [2022-11-20 10:49:51,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:49:52,766 INFO L130 PetriNetUnfolder]: 2892/6713 cut-off events. [2022-11-20 10:49:52,766 INFO L131 PetriNetUnfolder]: For 1134/1138 co-relation queries the response was YES. [2022-11-20 10:49:52,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13357 conditions, 6713 events. 2892/6713 cut-off events. For 1134/1138 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 60967 event pairs, 487 based on Foata normal form. 172/5941 useless extension candidates. Maximal degree in co-relation 12697. Up to 2168 conditions per place. [2022-11-20 10:49:52,842 INFO L137 encePairwiseOnDemand]: 161/168 looper letters, 33 selfloop transitions, 8 changer transitions 0/168 dead transitions. [2022-11-20 10:49:52,843 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 168 transitions, 597 flow [2022-11-20 10:49:52,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:49:52,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 10:49:52,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 830 transitions. [2022-11-20 10:49:52,846 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8234126984126984 [2022-11-20 10:49:52,846 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 830 transitions. [2022-11-20 10:49:52,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 830 transitions. [2022-11-20 10:49:52,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:49:52,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 830 transitions. [2022-11-20 10:49:52,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 138.33333333333334) internal successors, (830), 6 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:52,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 168.0) internal successors, (1176), 7 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:52,853 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 168.0) internal successors, (1176), 7 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:52,853 INFO L175 Difference]: Start difference. First operand has 186 places, 158 transitions, 496 flow. Second operand 6 states and 830 transitions. [2022-11-20 10:49:52,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 168 transitions, 597 flow [2022-11-20 10:49:52,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 168 transitions, 581 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-20 10:49:52,884 INFO L231 Difference]: Finished difference. Result has 183 places, 156 transitions, 487 flow [2022-11-20 10:49:52,885 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=487, PETRI_PLACES=183, PETRI_TRANSITIONS=156} [2022-11-20 10:49:52,889 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 40 predicate places. [2022-11-20 10:49:52,889 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 156 transitions, 487 flow [2022-11-20 10:49:52,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 134.5) internal successors, (807), 6 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:52,890 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:49:52,891 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:52,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 10:49:52,892 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 10:49:52,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:52,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1810045335, now seen corresponding path program 1 times [2022-11-20 10:49:52,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:52,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642133121] [2022-11-20 10:49:52,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:52,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:52,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:53,014 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:53,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:53,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642133121] [2022-11-20 10:49:53,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642133121] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:49:53,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141239281] [2022-11-20 10:49:53,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:53,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:49:53,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:49:53,021 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:49:53,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 10:49:53,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:53,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:49:53,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:49:53,198 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:53,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:49:53,259 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:53,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141239281] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:49:53,259 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:49:53,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-20 10:49:53,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889306062] [2022-11-20 10:49:53,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:49:53,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:49:53,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:53,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:49:53,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:49:53,264 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 168 [2022-11-20 10:49:53,267 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 156 transitions, 487 flow. Second operand has 12 states, 12 states have (on average 142.75) internal successors, (1713), 12 states have internal predecessors, (1713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:53,267 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:49:53,268 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 168 [2022-11-20 10:49:53,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:49:55,418 INFO L130 PetriNetUnfolder]: 4141/9230 cut-off events. [2022-11-20 10:49:55,418 INFO L131 PetriNetUnfolder]: For 1398/1402 co-relation queries the response was YES. [2022-11-20 10:49:55,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19508 conditions, 9230 events. 4141/9230 cut-off events. For 1398/1402 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 87025 event pairs, 572 based on Foata normal form. 171/8739 useless extension candidates. Maximal degree in co-relation 17872. Up to 1598 conditions per place. [2022-11-20 10:49:55,522 INFO L137 encePairwiseOnDemand]: 161/168 looper letters, 102 selfloop transitions, 18 changer transitions 0/255 dead transitions. [2022-11-20 10:49:55,523 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 255 transitions, 999 flow [2022-11-20 10:49:55,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 10:49:55,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 10:49:55,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2643 transitions. [2022-11-20 10:49:55,530 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8740079365079365 [2022-11-20 10:49:55,530 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2643 transitions. [2022-11-20 10:49:55,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2643 transitions. [2022-11-20 10:49:55,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:49:55,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2643 transitions. [2022-11-20 10:49:55,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 146.83333333333334) internal successors, (2643), 18 states have internal predecessors, (2643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:55,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 168.0) internal successors, (3192), 19 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:55,548 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 168.0) internal successors, (3192), 19 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:55,548 INFO L175 Difference]: Start difference. First operand has 183 places, 156 transitions, 487 flow. Second operand 18 states and 2643 transitions. [2022-11-20 10:49:55,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 255 transitions, 999 flow [2022-11-20 10:49:55,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 255 transitions, 983 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 10:49:55,572 INFO L231 Difference]: Finished difference. Result has 199 places, 168 transitions, 577 flow [2022-11-20 10:49:55,572 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=577, PETRI_PLACES=199, PETRI_TRANSITIONS=168} [2022-11-20 10:49:55,573 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 56 predicate places. [2022-11-20 10:49:55,574 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 168 transitions, 577 flow [2022-11-20 10:49:55,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 142.75) internal successors, (1713), 12 states have internal predecessors, (1713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:55,575 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:49:55,575 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:55,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 10:49:55,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:49:55,781 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 10:49:55,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:55,782 INFO L85 PathProgramCache]: Analyzing trace with hash -276830043, now seen corresponding path program 1 times [2022-11-20 10:49:55,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:55,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931992106] [2022-11-20 10:49:55,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:55,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:55,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:56,013 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:56,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:56,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931992106] [2022-11-20 10:49:56,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931992106] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:49:56,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990473741] [2022-11-20 10:49:56,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:56,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:49:56,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:49:56,016 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:49:56,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 10:49:56,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:56,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:49:56,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:49:56,153 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:56,153 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:49:56,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990473741] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:56,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:49:56,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 10:49:56,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555524707] [2022-11-20 10:49:56,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:56,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:49:56,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:56,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:49:56,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:49:56,157 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 168 [2022-11-20 10:49:56,158 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 168 transitions, 577 flow. Second operand has 6 states, 6 states have (on average 142.5) internal successors, (855), 6 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:56,158 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:49:56,158 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 168 [2022-11-20 10:49:56,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:49:57,682 INFO L130 PetriNetUnfolder]: 3672/8216 cut-off events. [2022-11-20 10:49:57,682 INFO L131 PetriNetUnfolder]: For 2827/2831 co-relation queries the response was YES. [2022-11-20 10:49:57,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18669 conditions, 8216 events. 3672/8216 cut-off events. For 2827/2831 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 77356 event pairs, 210 based on Foata normal form. 228/8004 useless extension candidates. Maximal degree in co-relation 17377. Up to 2432 conditions per place. [2022-11-20 10:49:57,764 INFO L137 encePairwiseOnDemand]: 163/168 looper letters, 44 selfloop transitions, 11 changer transitions 0/190 dead transitions. [2022-11-20 10:49:57,764 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 190 transitions, 730 flow [2022-11-20 10:49:57,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:49:57,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 10:49:57,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1027 transitions. [2022-11-20 10:49:57,768 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8732993197278912 [2022-11-20 10:49:57,768 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1027 transitions. [2022-11-20 10:49:57,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1027 transitions. [2022-11-20 10:49:57,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:49:57,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1027 transitions. [2022-11-20 10:49:57,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 146.71428571428572) internal successors, (1027), 7 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:57,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 168.0) internal successors, (1344), 8 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:57,775 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 168.0) internal successors, (1344), 8 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:57,776 INFO L175 Difference]: Start difference. First operand has 199 places, 168 transitions, 577 flow. Second operand 7 states and 1027 transitions. [2022-11-20 10:49:57,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 190 transitions, 730 flow [2022-11-20 10:49:57,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 190 transitions, 698 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-20 10:49:57,805 INFO L231 Difference]: Finished difference. Result has 195 places, 164 transitions, 540 flow [2022-11-20 10:49:57,806 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=540, PETRI_PLACES=195, PETRI_TRANSITIONS=164} [2022-11-20 10:49:57,806 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 52 predicate places. [2022-11-20 10:49:57,807 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 164 transitions, 540 flow [2022-11-20 10:49:57,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 142.5) internal successors, (855), 6 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:57,807 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:49:57,808 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:57,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 10:49:58,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 10:49:58,014 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 10:49:58,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:58,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1610000404, now seen corresponding path program 1 times [2022-11-20 10:49:58,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:58,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311347860] [2022-11-20 10:49:58,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:58,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:58,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:58,165 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:49:58,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:58,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311347860] [2022-11-20 10:49:58,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311347860] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:49:58,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197198449] [2022-11-20 10:49:58,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:58,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:49:58,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:49:58,168 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:49:58,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 10:49:58,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:58,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 10:49:58,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:49:58,524 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:58,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:49:58,862 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:58,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197198449] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:49:58,863 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:49:58,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 23 [2022-11-20 10:49:58,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964702737] [2022-11-20 10:49:58,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:49:58,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 10:49:58,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:58,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 10:49:58,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:49:58,872 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 168 [2022-11-20 10:49:58,884 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 164 transitions, 540 flow. Second operand has 23 states, 23 states have (on average 121.65217391304348) internal successors, (2798), 23 states have internal predecessors, (2798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:58,884 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:49:58,884 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 168 [2022-11-20 10:49:58,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:50:02,138 INFO L130 PetriNetUnfolder]: 6818/14620 cut-off events. [2022-11-20 10:50:02,138 INFO L131 PetriNetUnfolder]: For 3867/3895 co-relation queries the response was YES. [2022-11-20 10:50:02,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31844 conditions, 14620 events. 6818/14620 cut-off events. For 3867/3895 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 136901 event pairs, 1440 based on Foata normal form. 136/13669 useless extension candidates. Maximal degree in co-relation 29805. Up to 2690 conditions per place. [2022-11-20 10:50:02,319 INFO L137 encePairwiseOnDemand]: 150/168 looper letters, 179 selfloop transitions, 33 changer transitions 0/319 dead transitions. [2022-11-20 10:50:02,320 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 319 transitions, 1412 flow [2022-11-20 10:50:02,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-20 10:50:02,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-20 10:50:02,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3511 transitions. [2022-11-20 10:50:02,334 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7463860544217688 [2022-11-20 10:50:02,334 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3511 transitions. [2022-11-20 10:50:02,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3511 transitions. [2022-11-20 10:50:02,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:50:02,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3511 transitions. [2022-11-20 10:50:02,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 125.39285714285714) internal successors, (3511), 28 states have internal predecessors, (3511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:02,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 168.0) internal successors, (4872), 29 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:02,362 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 168.0) internal successors, (4872), 29 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:02,362 INFO L175 Difference]: Start difference. First operand has 195 places, 164 transitions, 540 flow. Second operand 28 states and 3511 transitions. [2022-11-20 10:50:02,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 319 transitions, 1412 flow [2022-11-20 10:50:02,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 319 transitions, 1398 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 10:50:02,415 INFO L231 Difference]: Finished difference. Result has 223 places, 179 transitions, 687 flow [2022-11-20 10:50:02,416 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=687, PETRI_PLACES=223, PETRI_TRANSITIONS=179} [2022-11-20 10:50:02,416 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 80 predicate places. [2022-11-20 10:50:02,417 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 179 transitions, 687 flow [2022-11-20 10:50:02,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 121.65217391304348) internal successors, (2798), 23 states have internal predecessors, (2798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:02,418 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:50:02,418 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:02,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:02,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-20 10:50:02,625 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 10:50:02,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:02,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1437094970, now seen corresponding path program 2 times [2022-11-20 10:50:02,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:02,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687189584] [2022-11-20 10:50:02,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:02,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:02,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:02,868 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:02,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:50:02,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687189584] [2022-11-20 10:50:02,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687189584] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:50:02,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676327394] [2022-11-20 10:50:02,869 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:50:02,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:50:02,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:50:02,871 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:50:02,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 10:50:02,964 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 10:50:02,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:50:02,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 10:50:02,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:03,197 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-20 10:50:03,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:50:03,402 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-20 10:50:03,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676327394] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:50:03,403 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:50:03,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-20 10:50:03,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003767459] [2022-11-20 10:50:03,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:50:03,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 10:50:03,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:50:03,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 10:50:03,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-20 10:50:03,409 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 168 [2022-11-20 10:50:03,412 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 179 transitions, 687 flow. Second operand has 18 states, 18 states have (on average 126.61111111111111) internal successors, (2279), 18 states have internal predecessors, (2279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:03,412 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:50:03,412 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 168 [2022-11-20 10:50:03,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:50:07,848 INFO L130 PetriNetUnfolder]: 4950/22267 cut-off events. [2022-11-20 10:50:07,849 INFO L131 PetriNetUnfolder]: For 9014/9386 co-relation queries the response was YES. [2022-11-20 10:50:07,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44645 conditions, 22267 events. 4950/22267 cut-off events. For 9014/9386 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 276536 event pairs, 3594 based on Foata normal form. 374/21070 useless extension candidates. Maximal degree in co-relation 42744. Up to 1785 conditions per place. [2022-11-20 10:50:07,997 INFO L137 encePairwiseOnDemand]: 157/168 looper letters, 136 selfloop transitions, 25 changer transitions 1/286 dead transitions. [2022-11-20 10:50:07,997 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 286 transitions, 1370 flow [2022-11-20 10:50:08,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 10:50:08,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-20 10:50:08,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3105 transitions. [2022-11-20 10:50:08,012 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7700892857142857 [2022-11-20 10:50:08,013 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3105 transitions. [2022-11-20 10:50:08,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3105 transitions. [2022-11-20 10:50:08,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:50:08,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3105 transitions. [2022-11-20 10:50:08,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 129.375) internal successors, (3105), 24 states have internal predecessors, (3105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:08,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 168.0) internal successors, (4200), 25 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:08,033 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 168.0) internal successors, (4200), 25 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:08,034 INFO L175 Difference]: Start difference. First operand has 223 places, 179 transitions, 687 flow. Second operand 24 states and 3105 transitions. [2022-11-20 10:50:08,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 286 transitions, 1370 flow [2022-11-20 10:50:08,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 286 transitions, 1319 flow, removed 5 selfloop flow, removed 16 redundant places. [2022-11-20 10:50:08,277 INFO L231 Difference]: Finished difference. Result has 230 places, 183 transitions, 711 flow [2022-11-20 10:50:08,278 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=626, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=711, PETRI_PLACES=230, PETRI_TRANSITIONS=183} [2022-11-20 10:50:08,279 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 87 predicate places. [2022-11-20 10:50:08,279 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 183 transitions, 711 flow [2022-11-20 10:50:08,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 126.61111111111111) internal successors, (2279), 18 states have internal predecessors, (2279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:08,280 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:50:08,280 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:08,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:08,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 10:50:08,486 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 10:50:08,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:08,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1153657876, now seen corresponding path program 1 times [2022-11-20 10:50:08,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:08,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335546783] [2022-11-20 10:50:08,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:08,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:08,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:08,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:08,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:50:08,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335546783] [2022-11-20 10:50:08,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335546783] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:50:08,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332870898] [2022-11-20 10:50:08,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:08,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:50:08,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:50:08,661 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:50:08,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 10:50:08,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:08,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:50:08,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:08,916 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:50:08,916 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:50:08,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332870898] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:08,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:50:08,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2022-11-20 10:50:08,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159100717] [2022-11-20 10:50:08,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:08,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:50:08,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:50:08,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:50:08,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-11-20 10:50:08,919 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 168 [2022-11-20 10:50:08,920 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 183 transitions, 711 flow. Second operand has 6 states, 6 states have (on average 133.5) internal successors, (801), 6 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:08,920 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:50:08,920 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 168 [2022-11-20 10:50:08,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:50:12,282 INFO L130 PetriNetUnfolder]: 8581/18377 cut-off events. [2022-11-20 10:50:12,282 INFO L131 PetriNetUnfolder]: For 6820/7324 co-relation queries the response was YES. [2022-11-20 10:50:12,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41242 conditions, 18377 events. 8581/18377 cut-off events. For 6820/7324 co-relation queries the response was YES. Maximal size of possible extension queue 689. Compared 186947 event pairs, 2811 based on Foata normal form. 1021/17980 useless extension candidates. Maximal degree in co-relation 39412. Up to 5291 conditions per place. [2022-11-20 10:50:12,430 INFO L137 encePairwiseOnDemand]: 160/168 looper letters, 52 selfloop transitions, 11 changer transitions 6/215 dead transitions. [2022-11-20 10:50:12,431 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 215 transitions, 967 flow [2022-11-20 10:50:12,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:50:12,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 10:50:12,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 961 transitions. [2022-11-20 10:50:12,434 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8171768707482994 [2022-11-20 10:50:12,434 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 961 transitions. [2022-11-20 10:50:12,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 961 transitions. [2022-11-20 10:50:12,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:50:12,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 961 transitions. [2022-11-20 10:50:12,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 137.28571428571428) internal successors, (961), 7 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:12,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 168.0) internal successors, (1344), 8 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:12,441 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 168.0) internal successors, (1344), 8 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:12,441 INFO L175 Difference]: Start difference. First operand has 230 places, 183 transitions, 711 flow. Second operand 7 states and 961 transitions. [2022-11-20 10:50:12,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 215 transitions, 967 flow [2022-11-20 10:50:12,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 215 transitions, 903 flow, removed 2 selfloop flow, removed 18 redundant places. [2022-11-20 10:50:12,566 INFO L231 Difference]: Finished difference. Result has 217 places, 179 transitions, 658 flow [2022-11-20 10:50:12,566 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=643, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=658, PETRI_PLACES=217, PETRI_TRANSITIONS=179} [2022-11-20 10:50:12,567 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 74 predicate places. [2022-11-20 10:50:12,567 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 179 transitions, 658 flow [2022-11-20 10:50:12,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 133.5) internal successors, (801), 6 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:12,568 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:50:12,568 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:12,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:12,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 10:50:12,775 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 10:50:12,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:12,776 INFO L85 PathProgramCache]: Analyzing trace with hash 684918698, now seen corresponding path program 1 times [2022-11-20 10:50:12,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:12,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856544572] [2022-11-20 10:50:12,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:12,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:12,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:12,909 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-20 10:50:12,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:50:12,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856544572] [2022-11-20 10:50:12,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856544572] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:50:12,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113814393] [2022-11-20 10:50:12,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:12,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:50:12,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:50:12,913 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:50:12,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 10:50:13,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:13,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:50:13,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:13,213 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-20 10:50:13,214 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:50:13,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113814393] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:13,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:50:13,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 10:50:13,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769879040] [2022-11-20 10:50:13,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:13,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:50:13,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:50:13,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:50:13,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:50:13,217 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 168 [2022-11-20 10:50:13,218 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 179 transitions, 658 flow. Second operand has 6 states, 6 states have (on average 142.33333333333334) internal successors, (854), 6 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:13,218 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:50:13,218 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 168 [2022-11-20 10:50:13,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:50:14,960 INFO L130 PetriNetUnfolder]: 4318/9621 cut-off events. [2022-11-20 10:50:14,960 INFO L131 PetriNetUnfolder]: For 2741/2741 co-relation queries the response was YES. [2022-11-20 10:50:14,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23079 conditions, 9621 events. 4318/9621 cut-off events. For 2741/2741 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 90814 event pairs, 70 based on Foata normal form. 190/9358 useless extension candidates. Maximal degree in co-relation 23028. Up to 2377 conditions per place. [2022-11-20 10:50:15,018 INFO L137 encePairwiseOnDemand]: 163/168 looper letters, 44 selfloop transitions, 13 changer transitions 0/202 dead transitions. [2022-11-20 10:50:15,019 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 202 transitions, 828 flow [2022-11-20 10:50:15,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:50:15,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 10:50:15,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1026 transitions. [2022-11-20 10:50:15,023 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8724489795918368 [2022-11-20 10:50:15,023 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1026 transitions. [2022-11-20 10:50:15,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1026 transitions. [2022-11-20 10:50:15,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:50:15,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1026 transitions. [2022-11-20 10:50:15,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 146.57142857142858) internal successors, (1026), 7 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:15,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 168.0) internal successors, (1344), 8 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:15,028 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 168.0) internal successors, (1344), 8 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:15,028 INFO L175 Difference]: Start difference. First operand has 217 places, 179 transitions, 658 flow. Second operand 7 states and 1026 transitions. [2022-11-20 10:50:15,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 202 transitions, 828 flow [2022-11-20 10:50:15,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 202 transitions, 804 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-11-20 10:50:15,064 INFO L231 Difference]: Finished difference. Result has 213 places, 177 transitions, 646 flow [2022-11-20 10:50:15,064 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=620, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=646, PETRI_PLACES=213, PETRI_TRANSITIONS=177} [2022-11-20 10:50:15,065 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 70 predicate places. [2022-11-20 10:50:15,065 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 177 transitions, 646 flow [2022-11-20 10:50:15,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 142.33333333333334) internal successors, (854), 6 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:15,066 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:50:15,066 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:15,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:15,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-20 10:50:15,271 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 10:50:15,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:15,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1153031729, now seen corresponding path program 2 times [2022-11-20 10:50:15,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:15,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536578170] [2022-11-20 10:50:15,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:15,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:15,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:15,611 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:15,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:50:15,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536578170] [2022-11-20 10:50:15,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536578170] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:50:15,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305900198] [2022-11-20 10:50:15,612 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:50:15,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:50:15,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:50:15,614 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:50:15,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 10:50:15,715 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 10:50:15,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:50:15,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:50:15,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:15,862 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 10:50:15,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:50:16,029 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 10:50:16,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305900198] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:50:16,030 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:50:16,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 19 [2022-11-20 10:50:16,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987074412] [2022-11-20 10:50:16,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:50:16,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 10:50:16,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:50:16,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 10:50:16,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-11-20 10:50:16,036 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 168 [2022-11-20 10:50:16,038 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 177 transitions, 646 flow. Second operand has 19 states, 19 states have (on average 119.21052631578948) internal successors, (2265), 19 states have internal predecessors, (2265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:16,039 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:50:16,039 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 168 [2022-11-20 10:50:16,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:50:20,860 INFO L130 PetriNetUnfolder]: 8343/21634 cut-off events. [2022-11-20 10:50:20,860 INFO L131 PetriNetUnfolder]: For 10469/10972 co-relation queries the response was YES. [2022-11-20 10:50:20,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48944 conditions, 21634 events. 8343/21634 cut-off events. For 10469/10972 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 233857 event pairs, 1562 based on Foata normal form. 254/20516 useless extension candidates. Maximal degree in co-relation 46024. Up to 3685 conditions per place. [2022-11-20 10:50:21,028 INFO L137 encePairwiseOnDemand]: 150/168 looper letters, 224 selfloop transitions, 48 changer transitions 0/373 dead transitions. [2022-11-20 10:50:21,029 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 373 transitions, 1795 flow [2022-11-20 10:50:21,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-20 10:50:21,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-20 10:50:21,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 4858 transitions. [2022-11-20 10:50:21,040 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7229166666666667 [2022-11-20 10:50:21,040 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 4858 transitions. [2022-11-20 10:50:21,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 4858 transitions. [2022-11-20 10:50:21,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:50:21,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 4858 transitions. [2022-11-20 10:50:21,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 121.45) internal successors, (4858), 40 states have internal predecessors, (4858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:21,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 168.0) internal successors, (6888), 41 states have internal predecessors, (6888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:21,067 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 168.0) internal successors, (6888), 41 states have internal predecessors, (6888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:21,067 INFO L175 Difference]: Start difference. First operand has 213 places, 177 transitions, 646 flow. Second operand 40 states and 4858 transitions. [2022-11-20 10:50:21,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 373 transitions, 1795 flow [2022-11-20 10:50:21,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 373 transitions, 1755 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-11-20 10:50:21,193 INFO L231 Difference]: Finished difference. Result has 248 places, 188 transitions, 798 flow [2022-11-20 10:50:21,193 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=798, PETRI_PLACES=248, PETRI_TRANSITIONS=188} [2022-11-20 10:50:21,194 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 105 predicate places. [2022-11-20 10:50:21,194 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 188 transitions, 798 flow [2022-11-20 10:50:21,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 119.21052631578948) internal successors, (2265), 19 states have internal predecessors, (2265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:21,195 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:50:21,195 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:21,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:21,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:50:21,401 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 10:50:21,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:21,401 INFO L85 PathProgramCache]: Analyzing trace with hash -346541334, now seen corresponding path program 2 times [2022-11-20 10:50:21,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:21,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784514155] [2022-11-20 10:50:21,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:21,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:21,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:21,735 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:21,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:50:21,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784514155] [2022-11-20 10:50:21,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784514155] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:50:21,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403511996] [2022-11-20 10:50:21,737 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:50:21,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:50:21,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:50:21,738 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:50:21,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 10:50:21,853 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 10:50:21,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:50:21,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:50:21,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:22,018 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-20 10:50:22,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:50:22,185 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-20 10:50:22,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403511996] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:50:22,186 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:50:22,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 15 [2022-11-20 10:50:22,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900278168] [2022-11-20 10:50:22,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:50:22,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 10:50:22,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:50:22,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 10:50:22,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-11-20 10:50:22,191 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 168 [2022-11-20 10:50:22,193 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 188 transitions, 798 flow. Second operand has 16 states, 16 states have (on average 136.6875) internal successors, (2187), 16 states have internal predecessors, (2187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:22,194 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:50:22,194 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 168 [2022-11-20 10:50:22,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:50:26,275 INFO L130 PetriNetUnfolder]: 11139/21985 cut-off events. [2022-11-20 10:50:26,276 INFO L131 PetriNetUnfolder]: For 7088/7094 co-relation queries the response was YES. [2022-11-20 10:50:26,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49559 conditions, 21985 events. 11139/21985 cut-off events. For 7088/7094 co-relation queries the response was YES. Maximal size of possible extension queue 925. Compared 221675 event pairs, 528 based on Foata normal form. 284/20664 useless extension candidates. Maximal degree in co-relation 49357. Up to 3075 conditions per place. [2022-11-20 10:50:26,392 INFO L137 encePairwiseOnDemand]: 159/168 looper letters, 0 selfloop transitions, 0 changer transitions 307/307 dead transitions. [2022-11-20 10:50:26,392 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 307 transitions, 1412 flow [2022-11-20 10:50:26,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 10:50:26,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-20 10:50:26,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3082 transitions. [2022-11-20 10:50:26,399 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8338744588744589 [2022-11-20 10:50:26,399 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3082 transitions. [2022-11-20 10:50:26,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3082 transitions. [2022-11-20 10:50:26,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:50:26,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3082 transitions. [2022-11-20 10:50:26,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 140.0909090909091) internal successors, (3082), 22 states have internal predecessors, (3082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:26,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 168.0) internal successors, (3864), 23 states have internal predecessors, (3864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:26,415 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 168.0) internal successors, (3864), 23 states have internal predecessors, (3864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:26,415 INFO L175 Difference]: Start difference. First operand has 248 places, 188 transitions, 798 flow. Second operand 22 states and 3082 transitions. [2022-11-20 10:50:26,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 307 transitions, 1412 flow [2022-11-20 10:50:26,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 307 transitions, 1341 flow, removed 5 selfloop flow, removed 25 redundant places. [2022-11-20 10:50:26,499 INFO L231 Difference]: Finished difference. Result has 243 places, 0 transitions, 0 flow [2022-11-20 10:50:26,500 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=717, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=0, PETRI_PLACES=243, PETRI_TRANSITIONS=0} [2022-11-20 10:50:26,500 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 100 predicate places. [2022-11-20 10:50:26,501 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 0 transitions, 0 flow [2022-11-20 10:50:26,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 136.6875) internal successors, (2187), 16 states have internal predecessors, (2187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:26,504 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 17 remaining) [2022-11-20 10:50:26,505 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-11-20 10:50:26,505 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-11-20 10:50:26,505 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-11-20 10:50:26,505 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-11-20 10:50:26,506 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-11-20 10:50:26,506 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-11-20 10:50:26,506 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-11-20 10:50:26,506 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 17 remaining) [2022-11-20 10:50:26,506 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 17 remaining) [2022-11-20 10:50:26,507 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 17 remaining) [2022-11-20 10:50:26,507 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-11-20 10:50:26,507 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-11-20 10:50:26,508 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-11-20 10:50:26,508 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-11-20 10:50:26,508 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-11-20 10:50:26,508 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-11-20 10:50:26,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:26,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:50:26,715 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:26,720 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-20 10:50:26,720 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 10:50:26,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 10:50:26 BasicIcfg [2022-11-20 10:50:26,724 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 10:50:26,725 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 10:50:26,725 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 10:50:26,726 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 10:50:26,726 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:49:40" (3/4) ... [2022-11-20 10:50:26,730 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 10:50:26,744 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-20 10:50:26,744 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-20 10:50:26,744 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-20 10:50:26,750 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2022-11-20 10:50:26,750 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-20 10:50:26,750 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 10:50:26,750 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 10:50:26,781 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 10:50:26,782 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 10:50:26,782 INFO L158 Benchmark]: Toolchain (without parser) took 46987.95ms. Allocated memory was 163.6MB in the beginning and 9.5GB in the end (delta: 9.3GB). Free memory was 127.6MB in the beginning and 8.0GB in the end (delta: -7.8GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. [2022-11-20 10:50:26,783 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 163.6MB. Free memory is still 135.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:50:26,783 INFO L158 Benchmark]: CACSL2BoogieTranslator took 355.56ms. Allocated memory is still 163.6MB. Free memory was 127.3MB in the beginning and 115.8MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 10:50:26,783 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.30ms. Allocated memory is still 163.6MB. Free memory was 115.8MB in the beginning and 114.0MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:50:26,784 INFO L158 Benchmark]: Boogie Preprocessor took 30.12ms. Allocated memory is still 163.6MB. Free memory was 114.0MB in the beginning and 112.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 10:50:26,784 INFO L158 Benchmark]: RCFGBuilder took 752.30ms. Allocated memory is still 163.6MB. Free memory was 112.3MB in the beginning and 90.6MB in the end (delta: 21.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-20 10:50:26,785 INFO L158 Benchmark]: TraceAbstraction took 45725.67ms. Allocated memory was 163.6MB in the beginning and 9.5GB in the end (delta: 9.3GB). Free memory was 89.8MB in the beginning and 8.0GB in the end (delta: -7.9GB). Peak memory consumption was 1.7GB. Max. memory is 16.1GB. [2022-11-20 10:50:26,785 INFO L158 Benchmark]: Witness Printer took 56.68ms. Allocated memory is still 9.5GB. Free memory was 8.0GB in the beginning and 8.0GB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 10:50:26,787 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 163.6MB. Free memory is still 135.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 355.56ms. Allocated memory is still 163.6MB. Free memory was 127.3MB in the beginning and 115.8MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.30ms. Allocated memory is still 163.6MB. Free memory was 115.8MB in the beginning and 114.0MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 30.12ms. Allocated memory is still 163.6MB. Free memory was 114.0MB in the beginning and 112.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 752.30ms. Allocated memory is still 163.6MB. Free memory was 112.3MB in the beginning and 90.6MB in the end (delta: 21.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 45725.67ms. Allocated memory was 163.6MB in the beginning and 9.5GB in the end (delta: 9.3GB). Free memory was 89.8MB in the beginning and 8.0GB in the end (delta: -7.9GB). Peak memory consumption was 1.7GB. Max. memory is 16.1GB. * Witness Printer took 56.68ms. Allocated memory is still 9.5GB. Free memory was 8.0GB in the beginning and 8.0GB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 46]: 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: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 110]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 110]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 199 locations, 17 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: 45.5s, OverallIterations: 16, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 35.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3255 SdHoareTripleChecker+Valid, 2.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3255 mSDsluCounter, 419 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 327 mSDsCounter, 91 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3075 IncrementalHoareTripleChecker+Invalid, 3166 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 91 mSolverCounterUnsat, 92 mSDtfsCounter, 3075 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1679 GetRequests, 1374 SyntacticMatches, 12 SemanticMatches, 293 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1922 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=798occurred in iteration=15, InterpolantAutomatonStates: 218, 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, 0.6s SatisfiabilityAnalysisTime, 5.2s InterpolantComputationTime, 2198 NumberOfCodeBlocks, 2102 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 2683 ConstructedInterpolants, 0 QuantifiedInterpolants, 5517 SizeOfPredicates, 46 NumberOfNonLiveVariables, 1975 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 33 InterpolantComputations, 10 PerfectInterpolantSequences, 309/597 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 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-20 10:50:26,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22cab48-a344-444d-8d2f-ef8d8a552c59/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE