./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/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_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/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_3d95422c-466c-4acc-9e32-1e3519cef621/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 0307f20ae0363cc6fed70ae0937c5000167639ab486b68a523e3313ccdd28e28 --- 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 09:32:42,845 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 09:32:42,846 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 09:32:42,880 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 09:32:42,881 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 09:32:42,883 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 09:32:42,886 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 09:32:42,892 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 09:32:42,895 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 09:32:42,897 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 09:32:42,899 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 09:32:42,901 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 09:32:42,903 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 09:32:42,907 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 09:32:42,911 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 09:32:42,913 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 09:32:42,916 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 09:32:42,917 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 09:32:42,925 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 09:32:42,927 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 09:32:42,929 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 09:32:42,930 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 09:32:42,932 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 09:32:42,933 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 09:32:42,937 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 09:32:42,937 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 09:32:42,937 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 09:32:42,938 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 09:32:42,939 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 09:32:42,940 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 09:32:42,940 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 09:32:42,941 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 09:32:42,942 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 09:32:42,943 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 09:32:42,944 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 09:32:42,944 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 09:32:42,945 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 09:32:42,945 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 09:32:42,946 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 09:32:42,947 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 09:32:42,948 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 09:32:42,950 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 09:32:43,003 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 09:32:43,004 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 09:32:43,005 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 09:32:43,005 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 09:32:43,006 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 09:32:43,006 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 09:32:43,007 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 09:32:43,007 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 09:32:43,007 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 09:32:43,008 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 09:32:43,009 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 09:32:43,009 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 09:32:43,009 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 09:32:43,010 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 09:32:43,010 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 09:32:43,010 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 09:32:43,010 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 09:32:43,011 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 09:32:43,011 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 09:32:43,011 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 09:32:43,011 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 09:32:43,011 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 09:32:43,012 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 09:32:43,012 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 09:32:43,012 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 09:32:43,012 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 09:32:43,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:32:43,013 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 09:32:43,014 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 09:32:43,014 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 09:32:43,014 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 09:32:43,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 09:32:43,015 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 09:32:43,015 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 09:32:43,015 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 09:32:43,016 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_3d95422c-466c-4acc-9e32-1e3519cef621/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0307f20ae0363cc6fed70ae0937c5000167639ab486b68a523e3313ccdd28e28 [2022-11-20 09:32:43,347 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 09:32:43,378 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 09:32:43,382 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 09:32:43,383 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 09:32:43,385 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 09:32:43,386 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c [2022-11-20 09:32:46,758 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 09:32:47,038 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 09:32:47,039 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c [2022-11-20 09:32:47,048 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/data/7942f3806/b3f5ab7bd3544b0abce40f06fdaaf3d2/FLAGe2c14907b [2022-11-20 09:32:47,073 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/data/7942f3806/b3f5ab7bd3544b0abce40f06fdaaf3d2 [2022-11-20 09:32:47,076 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 09:32:47,080 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 09:32:47,081 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 09:32:47,082 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 09:32:47,086 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 09:32:47,088 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:32:47" (1/1) ... [2022-11-20 09:32:47,089 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@246245b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:47, skipping insertion in model container [2022-11-20 09:32:47,090 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:32:47" (1/1) ... [2022-11-20 09:32:47,100 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 09:32:47,134 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 09:32:47,380 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_3d95422c-466c-4acc-9e32-1e3519cef621/sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c[2396,2409] [2022-11-20 09:32:47,387 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:32:47,399 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 09:32:47,425 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_3d95422c-466c-4acc-9e32-1e3519cef621/sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c[2396,2409] [2022-11-20 09:32:47,430 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:32:47,449 INFO L208 MainTranslator]: Completed translation [2022-11-20 09:32:47,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:47 WrapperNode [2022-11-20 09:32:47,450 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 09:32:47,451 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 09:32:47,452 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 09:32:47,452 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 09:32:47,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:47" (1/1) ... [2022-11-20 09:32:47,490 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:47" (1/1) ... [2022-11-20 09:32:47,532 INFO L138 Inliner]: procedures = 25, calls = 34, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 104 [2022-11-20 09:32:47,533 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 09:32:47,533 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 09:32:47,534 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 09:32:47,534 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 09:32:47,546 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:47" (1/1) ... [2022-11-20 09:32:47,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:47" (1/1) ... [2022-11-20 09:32:47,549 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:47" (1/1) ... [2022-11-20 09:32:47,550 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:47" (1/1) ... [2022-11-20 09:32:47,557 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:47" (1/1) ... [2022-11-20 09:32:47,562 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:47" (1/1) ... [2022-11-20 09:32:47,564 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:47" (1/1) ... [2022-11-20 09:32:47,566 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:47" (1/1) ... [2022-11-20 09:32:47,569 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 09:32:47,570 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 09:32:47,570 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 09:32:47,570 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 09:32:47,571 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:47" (1/1) ... [2022-11-20 09:32:47,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:32:47,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:32:47,616 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 09:32:47,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 09:32:47,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 09:32:47,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 09:32:47,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 09:32:47,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 09:32:47,677 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 09:32:47,679 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 09:32:47,680 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 09:32:47,680 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 09:32:47,681 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 09:32:47,681 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 09:32:47,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 09:32:47,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 09:32:47,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 09:32:47,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 09:32:47,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 09:32:47,684 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 09:32:47,857 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 09:32:47,861 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 09:32:48,186 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 09:32:48,198 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 09:32:48,198 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-20 09:32:48,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:32:48 BoogieIcfgContainer [2022-11-20 09:32:48,201 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 09:32:48,220 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 09:32:48,220 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 09:32:48,224 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 09:32:48,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:32:47" (1/3) ... [2022-11-20 09:32:48,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44a16b1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:32:48, skipping insertion in model container [2022-11-20 09:32:48,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:47" (2/3) ... [2022-11-20 09:32:48,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44a16b1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:32:48, skipping insertion in model container [2022-11-20 09:32:48,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:32:48" (3/3) ... [2022-11-20 09:32:48,228 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-sum-array-hom.wvr.c [2022-11-20 09:32:48,254 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 09:32:48,267 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 09:32:48,267 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-20 09:32:48,268 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 09:32:48,444 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 09:32:48,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 175 transitions, 374 flow [2022-11-20 09:32:48,648 INFO L130 PetriNetUnfolder]: 12/172 cut-off events. [2022-11-20 09:32:48,648 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 09:32:48,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 172 events. 12/172 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 164 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 129. Up to 2 conditions per place. [2022-11-20 09:32:48,656 INFO L82 GeneralOperation]: Start removeDead. Operand has 173 places, 175 transitions, 374 flow [2022-11-20 09:32:48,663 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 150 places, 151 transitions, 317 flow [2022-11-20 09:32:48,681 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 09:32:48,688 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;@60eaacb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 09:32:48,688 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-20 09:32:48,733 INFO L130 PetriNetUnfolder]: 3/63 cut-off events. [2022-11-20 09:32:48,733 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 09:32:48,734 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:48,735 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] [2022-11-20 09:32:48,736 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 09:32:48,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:48,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1944625238, now seen corresponding path program 1 times [2022-11-20 09:32:48,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:48,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892423050] [2022-11-20 09:32:48,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:48,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:48,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:49,240 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 09:32:49,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:49,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892423050] [2022-11-20 09:32:49,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892423050] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:49,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:49,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:32:49,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996700473] [2022-11-20 09:32:49,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:49,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:32:49,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:49,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:32:49,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:32:49,296 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 175 [2022-11-20 09:32:49,300 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 151 transitions, 317 flow. Second operand has 4 states, 4 states have (on average 149.5) internal successors, (598), 4 states have internal predecessors, (598), 0 states have call successors, (0), 0 states 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 09:32:49,301 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:32:49,301 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 175 [2022-11-20 09:32:49,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:32:49,469 INFO L130 PetriNetUnfolder]: 7/236 cut-off events. [2022-11-20 09:32:49,469 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-11-20 09:32:49,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287 conditions, 236 events. 7/236 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 563 event pairs, 0 based on Foata normal form. 22/232 useless extension candidates. Maximal degree in co-relation 218. Up to 18 conditions per place. [2022-11-20 09:32:49,474 INFO L137 encePairwiseOnDemand]: 162/175 looper letters, 26 selfloop transitions, 4 changer transitions 3/157 dead transitions. [2022-11-20 09:32:49,474 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 157 transitions, 404 flow [2022-11-20 09:32:49,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:32:49,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 09:32:49,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 784 transitions. [2022-11-20 09:32:49,493 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.896 [2022-11-20 09:32:49,494 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 784 transitions. [2022-11-20 09:32:49,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 784 transitions. [2022-11-20 09:32:49,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:32:49,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 784 transitions. [2022-11-20 09:32:49,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 156.8) internal successors, (784), 5 states have internal predecessors, (784), 0 states have call successors, (0), 0 states 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 09:32:49,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 175.0) internal successors, (1050), 6 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states 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 09:32:49,518 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 175.0) internal successors, (1050), 6 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states 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 09:32:49,521 INFO L175 Difference]: Start difference. First operand has 150 places, 151 transitions, 317 flow. Second operand 5 states and 784 transitions. [2022-11-20 09:32:49,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 157 transitions, 404 flow [2022-11-20 09:32:49,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 157 transitions, 386 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 09:32:49,532 INFO L231 Difference]: Finished difference. Result has 152 places, 144 transitions, 318 flow [2022-11-20 09:32:49,534 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=318, PETRI_PLACES=152, PETRI_TRANSITIONS=144} [2022-11-20 09:32:49,538 INFO L288 CegarLoopForPetriNet]: 150 programPoint places, 2 predicate places. [2022-11-20 09:32:49,539 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 144 transitions, 318 flow [2022-11-20 09:32:49,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 149.5) internal successors, (598), 4 states have internal predecessors, (598), 0 states have call successors, (0), 0 states 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 09:32:49,540 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:49,540 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:32:49,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 09:32:49,541 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 09:32:49,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:49,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1506508057, now seen corresponding path program 1 times [2022-11-20 09:32:49,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:49,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511397480] [2022-11-20 09:32:49,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:49,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:49,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:49,767 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 09:32:49,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:49,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511397480] [2022-11-20 09:32:49,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511397480] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:32:49,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269633104] [2022-11-20 09:32:49,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:49,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:49,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:32:49,773 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:32:49,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 09:32:49,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:49,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 09:32:49,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:50,058 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 09:32:50,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:32:50,158 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 09:32:50,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269633104] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:32:50,158 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:32:50,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-20 09:32:50,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474976078] [2022-11-20 09:32:50,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:32:50,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 09:32:50,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:50,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 09:32:50,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-20 09:32:50,169 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 175 [2022-11-20 09:32:50,173 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 144 transitions, 318 flow. Second operand has 12 states, 12 states have (on average 150.66666666666666) internal successors, (1808), 12 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states 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 09:32:50,173 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:32:50,173 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 175 [2022-11-20 09:32:50,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:32:50,671 INFO L130 PetriNetUnfolder]: 16/507 cut-off events. [2022-11-20 09:32:50,672 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-11-20 09:32:50,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 627 conditions, 507 events. 16/507 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2123 event pairs, 0 based on Foata normal form. 3/460 useless extension candidates. Maximal degree in co-relation 456. Up to 13 conditions per place. [2022-11-20 09:32:50,684 INFO L137 encePairwiseOnDemand]: 168/175 looper letters, 53 selfloop transitions, 18 changer transitions 0/195 dead transitions. [2022-11-20 09:32:50,684 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 195 transitions, 608 flow [2022-11-20 09:32:50,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 09:32:50,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 09:32:50,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2738 transitions. [2022-11-20 09:32:50,694 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8692063492063492 [2022-11-20 09:32:50,695 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2738 transitions. [2022-11-20 09:32:50,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2738 transitions. [2022-11-20 09:32:50,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:32:50,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2738 transitions. [2022-11-20 09:32:50,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 152.11111111111111) internal successors, (2738), 18 states have internal predecessors, (2738), 0 states have call successors, (0), 0 states 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 09:32:50,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 175.0) internal successors, (3325), 19 states have internal predecessors, (3325), 0 states have call successors, (0), 0 states 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 09:32:50,726 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 175.0) internal successors, (3325), 19 states have internal predecessors, (3325), 0 states have call successors, (0), 0 states 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 09:32:50,726 INFO L175 Difference]: Start difference. First operand has 152 places, 144 transitions, 318 flow. Second operand 18 states and 2738 transitions. [2022-11-20 09:32:50,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 195 transitions, 608 flow [2022-11-20 09:32:50,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 195 transitions, 606 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 09:32:50,740 INFO L231 Difference]: Finished difference. Result has 169 places, 156 transitions, 422 flow [2022-11-20 09:32:50,740 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=422, PETRI_PLACES=169, PETRI_TRANSITIONS=156} [2022-11-20 09:32:50,743 INFO L288 CegarLoopForPetriNet]: 150 programPoint places, 19 predicate places. [2022-11-20 09:32:50,743 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 156 transitions, 422 flow [2022-11-20 09:32:50,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 150.66666666666666) internal successors, (1808), 12 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states 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 09:32:50,746 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:50,749 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:32:50,756 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 09:32:50,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-20 09:32:50,956 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 09:32:50,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:50,957 INFO L85 PathProgramCache]: Analyzing trace with hash 542890882, now seen corresponding path program 1 times [2022-11-20 09:32:50,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:50,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80738185] [2022-11-20 09:32:50,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:50,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:51,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:51,229 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 09:32:51,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:51,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80738185] [2022-11-20 09:32:51,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80738185] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:32:51,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364641930] [2022-11-20 09:32:51,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:51,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:51,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:32:51,237 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:32:51,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 09:32:51,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:51,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 09:32:51,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:51,471 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 09:32:51,472 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:32:51,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364641930] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:51,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:32:51,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 09:32:51,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493609046] [2022-11-20 09:32:51,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:51,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:32:51,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:51,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:32:51,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:32:51,484 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 175 [2022-11-20 09:32:51,485 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 156 transitions, 422 flow. Second operand has 6 states, 6 states have (on average 150.33333333333334) internal successors, (902), 6 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:51,485 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:32:51,486 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 175 [2022-11-20 09:32:51,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:32:51,755 INFO L130 PetriNetUnfolder]: 16/503 cut-off events. [2022-11-20 09:32:51,756 INFO L131 PetriNetUnfolder]: For 57/57 co-relation queries the response was YES. [2022-11-20 09:32:51,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 645 conditions, 503 events. 16/503 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2099 event pairs, 0 based on Foata normal form. 4/457 useless extension candidates. Maximal degree in co-relation 500. Up to 36 conditions per place. [2022-11-20 09:32:51,762 INFO L137 encePairwiseOnDemand]: 170/175 looper letters, 27 selfloop transitions, 11 changer transitions 0/162 dead transitions. [2022-11-20 09:32:51,762 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 162 transitions, 499 flow [2022-11-20 09:32:51,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:32:51,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 09:32:51,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1066 transitions. [2022-11-20 09:32:51,768 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8702040816326531 [2022-11-20 09:32:51,768 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1066 transitions. [2022-11-20 09:32:51,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1066 transitions. [2022-11-20 09:32:51,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:32:51,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1066 transitions. [2022-11-20 09:32:51,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 152.28571428571428) internal successors, (1066), 7 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states 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 09:32:51,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 175.0) internal successors, (1400), 8 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states 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 09:32:51,778 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 175.0) internal successors, (1400), 8 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states 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 09:32:51,778 INFO L175 Difference]: Start difference. First operand has 169 places, 156 transitions, 422 flow. Second operand 7 states and 1066 transitions. [2022-11-20 09:32:51,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 162 transitions, 499 flow [2022-11-20 09:32:51,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 162 transitions, 467 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-20 09:32:51,790 INFO L231 Difference]: Finished difference. Result has 165 places, 152 transitions, 385 flow [2022-11-20 09:32:51,791 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=385, PETRI_PLACES=165, PETRI_TRANSITIONS=152} [2022-11-20 09:32:51,794 INFO L288 CegarLoopForPetriNet]: 150 programPoint places, 15 predicate places. [2022-11-20 09:32:51,795 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 152 transitions, 385 flow [2022-11-20 09:32:51,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 150.33333333333334) internal successors, (902), 6 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:51,796 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:51,796 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] [2022-11-20 09:32:51,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 09:32:52,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:52,003 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 09:32:52,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:52,003 INFO L85 PathProgramCache]: Analyzing trace with hash 657361162, now seen corresponding path program 1 times [2022-11-20 09:32:52,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:52,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085330003] [2022-11-20 09:32:52,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:52,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:52,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:52,154 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 09:32:52,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:52,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085330003] [2022-11-20 09:32:52,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085330003] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:52,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:52,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:32:52,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068516454] [2022-11-20 09:32:52,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:52,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:32:52,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:52,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:32:52,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:32:52,159 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 175 [2022-11-20 09:32:52,160 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 152 transitions, 385 flow. Second operand has 4 states, 4 states have (on average 150.5) internal successors, (602), 4 states have internal predecessors, (602), 0 states have call successors, (0), 0 states 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 09:32:52,160 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:32:52,160 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 175 [2022-11-20 09:32:52,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:32:52,662 INFO L130 PetriNetUnfolder]: 231/1493 cut-off events. [2022-11-20 09:32:52,663 INFO L131 PetriNetUnfolder]: For 42/57 co-relation queries the response was YES. [2022-11-20 09:32:52,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2332 conditions, 1493 events. 231/1493 cut-off events. For 42/57 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 11522 event pairs, 75 based on Foata normal form. 0/1293 useless extension candidates. Maximal degree in co-relation 1856. Up to 291 conditions per place. [2022-11-20 09:32:52,730 INFO L137 encePairwiseOnDemand]: 169/175 looper letters, 28 selfloop transitions, 4 changer transitions 0/168 dead transitions. [2022-11-20 09:32:52,730 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 168 transitions, 492 flow [2022-11-20 09:32:52,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:32:52,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 09:32:52,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 779 transitions. [2022-11-20 09:32:52,734 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8902857142857142 [2022-11-20 09:32:52,734 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 779 transitions. [2022-11-20 09:32:52,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 779 transitions. [2022-11-20 09:32:52,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:32:52,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 779 transitions. [2022-11-20 09:32:52,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 155.8) internal successors, (779), 5 states have internal predecessors, (779), 0 states have call successors, (0), 0 states 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 09:32:52,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 175.0) internal successors, (1050), 6 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states 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 09:32:52,741 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 175.0) internal successors, (1050), 6 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states 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 09:32:52,742 INFO L175 Difference]: Start difference. First operand has 165 places, 152 transitions, 385 flow. Second operand 5 states and 779 transitions. [2022-11-20 09:32:52,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 168 transitions, 492 flow [2022-11-20 09:32:52,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 168 transitions, 478 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 09:32:52,751 INFO L231 Difference]: Finished difference. Result has 167 places, 155 transitions, 401 flow [2022-11-20 09:32:52,752 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=401, PETRI_PLACES=167, PETRI_TRANSITIONS=155} [2022-11-20 09:32:52,754 INFO L288 CegarLoopForPetriNet]: 150 programPoint places, 17 predicate places. [2022-11-20 09:32:52,754 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 155 transitions, 401 flow [2022-11-20 09:32:52,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 150.5) internal successors, (602), 4 states have internal predecessors, (602), 0 states have call successors, (0), 0 states 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 09:32:52,755 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:52,755 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] [2022-11-20 09:32:52,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 09:32:52,756 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 09:32:52,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:52,756 INFO L85 PathProgramCache]: Analyzing trace with hash 269526408, now seen corresponding path program 1 times [2022-11-20 09:32:52,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:52,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143005729] [2022-11-20 09:32:52,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:52,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:52,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:52,938 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 09:32:52,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:52,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143005729] [2022-11-20 09:32:52,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143005729] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:52,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:52,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:32:52,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913324954] [2022-11-20 09:32:52,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:52,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:32:52,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:52,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:32:52,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:32:52,944 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 175 [2022-11-20 09:32:52,945 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 155 transitions, 401 flow. Second operand has 4 states, 4 states have (on average 150.75) internal successors, (603), 4 states have internal predecessors, (603), 0 states have call successors, (0), 0 states 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 09:32:52,946 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:32:52,946 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 175 [2022-11-20 09:32:52,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:32:53,403 INFO L130 PetriNetUnfolder]: 306/1488 cut-off events. [2022-11-20 09:32:53,404 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2022-11-20 09:32:53,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2488 conditions, 1488 events. 306/1488 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 12505 event pairs, 135 based on Foata normal form. 0/1238 useless extension candidates. Maximal degree in co-relation 1979. Up to 406 conditions per place. [2022-11-20 09:32:53,432 INFO L137 encePairwiseOnDemand]: 169/175 looper letters, 27 selfloop transitions, 4 changer transitions 0/170 dead transitions. [2022-11-20 09:32:53,432 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 170 transitions, 503 flow [2022-11-20 09:32:53,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:32:53,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 09:32:53,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 778 transitions. [2022-11-20 09:32:53,436 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8891428571428571 [2022-11-20 09:32:53,436 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 778 transitions. [2022-11-20 09:32:53,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 778 transitions. [2022-11-20 09:32:53,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:32:53,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 778 transitions. [2022-11-20 09:32:53,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 155.6) internal successors, (778), 5 states have internal predecessors, (778), 0 states have call successors, (0), 0 states 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 09:32:53,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 175.0) internal successors, (1050), 6 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states 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 09:32:53,443 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 175.0) internal successors, (1050), 6 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states 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 09:32:53,443 INFO L175 Difference]: Start difference. First operand has 167 places, 155 transitions, 401 flow. Second operand 5 states and 778 transitions. [2022-11-20 09:32:53,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 170 transitions, 503 flow [2022-11-20 09:32:53,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 170 transitions, 501 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 09:32:53,450 INFO L231 Difference]: Finished difference. Result has 173 places, 158 transitions, 429 flow [2022-11-20 09:32:53,450 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=429, PETRI_PLACES=173, PETRI_TRANSITIONS=158} [2022-11-20 09:32:53,454 INFO L288 CegarLoopForPetriNet]: 150 programPoint places, 23 predicate places. [2022-11-20 09:32:53,454 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 158 transitions, 429 flow [2022-11-20 09:32:53,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 150.75) internal successors, (603), 4 states have internal predecessors, (603), 0 states have call successors, (0), 0 states 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 09:32:53,454 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:53,455 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:32:53,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 09:32:53,455 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 09:32:53,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:53,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1593264790, now seen corresponding path program 1 times [2022-11-20 09:32:53,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:53,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727806187] [2022-11-20 09:32:53,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:53,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:53,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:53,616 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 09:32:53,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:53,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727806187] [2022-11-20 09:32:53,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727806187] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:32:53,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218286250] [2022-11-20 09:32:53,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:53,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:53,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:32:53,623 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:32:53,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 09:32:53,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:53,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 09:32:53,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:53,902 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 09:32:53,903 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:32:53,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218286250] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:53,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:32:53,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-11-20 09:32:53,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945231024] [2022-11-20 09:32:53,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:53,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:32:53,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:53,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:32:53,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-20 09:32:53,910 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 175 [2022-11-20 09:32:53,912 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 158 transitions, 429 flow. Second operand has 7 states, 7 states have (on average 139.57142857142858) internal successors, (977), 7 states have internal predecessors, (977), 0 states have call successors, (0), 0 states 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 09:32:53,913 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:32:53,914 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 175 [2022-11-20 09:32:53,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:32:54,455 INFO L130 PetriNetUnfolder]: 271/1547 cut-off events. [2022-11-20 09:32:54,455 INFO L131 PetriNetUnfolder]: For 315/320 co-relation queries the response was YES. [2022-11-20 09:32:54,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2663 conditions, 1547 events. 271/1547 cut-off events. For 315/320 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 11608 event pairs, 234 based on Foata normal form. 0/1334 useless extension candidates. Maximal degree in co-relation 2355. Up to 565 conditions per place. [2022-11-20 09:32:54,483 INFO L137 encePairwiseOnDemand]: 166/175 looper letters, 47 selfloop transitions, 8 changer transitions 0/175 dead transitions. [2022-11-20 09:32:54,483 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 175 transitions, 584 flow [2022-11-20 09:32:54,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 09:32:54,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 09:32:54,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1144 transitions. [2022-11-20 09:32:54,493 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8171428571428572 [2022-11-20 09:32:54,494 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1144 transitions. [2022-11-20 09:32:54,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1144 transitions. [2022-11-20 09:32:54,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:32:54,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1144 transitions. [2022-11-20 09:32:54,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 143.0) internal successors, (1144), 8 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states 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 09:32:54,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 175.0) internal successors, (1575), 9 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states 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 09:32:54,505 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 175.0) internal successors, (1575), 9 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states 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 09:32:54,505 INFO L175 Difference]: Start difference. First operand has 173 places, 158 transitions, 429 flow. Second operand 8 states and 1144 transitions. [2022-11-20 09:32:54,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 175 transitions, 584 flow [2022-11-20 09:32:54,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 175 transitions, 582 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 09:32:54,513 INFO L231 Difference]: Finished difference. Result has 182 places, 160 transitions, 461 flow [2022-11-20 09:32:54,513 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=461, PETRI_PLACES=182, PETRI_TRANSITIONS=160} [2022-11-20 09:32:54,516 INFO L288 CegarLoopForPetriNet]: 150 programPoint places, 32 predicate places. [2022-11-20 09:32:54,516 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 160 transitions, 461 flow [2022-11-20 09:32:54,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 139.57142857142858) internal successors, (977), 7 states have internal predecessors, (977), 0 states have call successors, (0), 0 states 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 09:32:54,519 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:54,519 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] [2022-11-20 09:32:54,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 09:32:54,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:54,725 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 09:32:54,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:54,726 INFO L85 PathProgramCache]: Analyzing trace with hash 609866353, now seen corresponding path program 1 times [2022-11-20 09:32:54,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:54,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080557792] [2022-11-20 09:32:54,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:54,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:54,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:54,931 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 09:32:54,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:54,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080557792] [2022-11-20 09:32:54,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080557792] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:54,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:54,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 09:32:54,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860492377] [2022-11-20 09:32:54,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:54,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 09:32:54,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:54,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 09:32:54,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:32:54,935 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 175 [2022-11-20 09:32:54,937 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 160 transitions, 461 flow. Second operand has 8 states, 8 states have (on average 134.375) internal successors, (1075), 8 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states 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 09:32:54,937 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:32:54,937 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 175 [2022-11-20 09:32:54,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:32:55,648 INFO L130 PetriNetUnfolder]: 537/1990 cut-off events. [2022-11-20 09:32:55,649 INFO L131 PetriNetUnfolder]: For 489/500 co-relation queries the response was YES. [2022-11-20 09:32:55,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3551 conditions, 1990 events. 537/1990 cut-off events. For 489/500 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 17002 event pairs, 402 based on Foata normal form. 11/1658 useless extension candidates. Maximal degree in co-relation 3145. Up to 945 conditions per place. [2022-11-20 09:32:55,678 INFO L137 encePairwiseOnDemand]: 162/175 looper letters, 62 selfloop transitions, 12 changer transitions 0/192 dead transitions. [2022-11-20 09:32:55,678 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 192 transitions, 689 flow [2022-11-20 09:32:55,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 09:32:55,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 09:32:55,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1521 transitions. [2022-11-20 09:32:55,684 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7901298701298701 [2022-11-20 09:32:55,684 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1521 transitions. [2022-11-20 09:32:55,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1521 transitions. [2022-11-20 09:32:55,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:32:55,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1521 transitions. [2022-11-20 09:32:55,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 138.27272727272728) internal successors, (1521), 11 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states 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 09:32:55,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 175.0) internal successors, (2100), 12 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states 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 09:32:55,696 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 175.0) internal successors, (2100), 12 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states 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 09:32:55,696 INFO L175 Difference]: Start difference. First operand has 182 places, 160 transitions, 461 flow. Second operand 11 states and 1521 transitions. [2022-11-20 09:32:55,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 192 transitions, 689 flow [2022-11-20 09:32:55,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 192 transitions, 679 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 09:32:55,708 INFO L231 Difference]: Finished difference. Result has 193 places, 165 transitions, 510 flow [2022-11-20 09:32:55,708 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=510, PETRI_PLACES=193, PETRI_TRANSITIONS=165} [2022-11-20 09:32:55,709 INFO L288 CegarLoopForPetriNet]: 150 programPoint places, 43 predicate places. [2022-11-20 09:32:55,709 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 165 transitions, 510 flow [2022-11-20 09:32:55,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 134.375) internal successors, (1075), 8 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states 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 09:32:55,710 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:55,710 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] [2022-11-20 09:32:55,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 09:32:55,711 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 09:32:55,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:55,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1725988233, now seen corresponding path program 1 times [2022-11-20 09:32:55,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:55,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979551479] [2022-11-20 09:32:55,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:55,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:55,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:55,870 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 09:32:55,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:55,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979551479] [2022-11-20 09:32:55,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979551479] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:55,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:55,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 09:32:55,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207752580] [2022-11-20 09:32:55,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:55,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:32:55,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:55,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:32:55,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:32:55,874 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 175 [2022-11-20 09:32:55,875 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 165 transitions, 510 flow. Second operand has 6 states, 6 states have (on average 143.5) internal successors, (861), 6 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:55,875 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:32:55,875 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 175 [2022-11-20 09:32:55,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:32:56,663 INFO L130 PetriNetUnfolder]: 1224/3272 cut-off events. [2022-11-20 09:32:56,664 INFO L131 PetriNetUnfolder]: For 840/840 co-relation queries the response was YES. [2022-11-20 09:32:56,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6242 conditions, 3272 events. 1224/3272 cut-off events. For 840/840 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 28801 event pairs, 56 based on Foata normal form. 88/2766 useless extension candidates. Maximal degree in co-relation 5866. Up to 1008 conditions per place. [2022-11-20 09:32:56,707 INFO L137 encePairwiseOnDemand]: 168/175 looper letters, 27 selfloop transitions, 8 changer transitions 0/171 dead transitions. [2022-11-20 09:32:56,707 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 171 transitions, 591 flow [2022-11-20 09:32:56,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 09:32:56,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 09:32:56,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 878 transitions. [2022-11-20 09:32:56,711 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8361904761904762 [2022-11-20 09:32:56,711 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 878 transitions. [2022-11-20 09:32:56,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 878 transitions. [2022-11-20 09:32:56,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:32:56,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 878 transitions. [2022-11-20 09:32:56,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 146.33333333333334) internal successors, (878), 6 states have internal predecessors, (878), 0 states have call successors, (0), 0 states 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 09:32:56,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 175.0) internal successors, (1225), 7 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states 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 09:32:56,717 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 175.0) internal successors, (1225), 7 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states 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 09:32:56,717 INFO L175 Difference]: Start difference. First operand has 193 places, 165 transitions, 510 flow. Second operand 6 states and 878 transitions. [2022-11-20 09:32:56,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 171 transitions, 591 flow [2022-11-20 09:32:56,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 171 transitions, 575 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-20 09:32:56,738 INFO L231 Difference]: Finished difference. Result has 190 places, 163 transitions, 501 flow [2022-11-20 09:32:56,739 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=501, PETRI_PLACES=190, PETRI_TRANSITIONS=163} [2022-11-20 09:32:56,743 INFO L288 CegarLoopForPetriNet]: 150 programPoint places, 40 predicate places. [2022-11-20 09:32:56,744 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 163 transitions, 501 flow [2022-11-20 09:32:56,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 143.5) internal successors, (861), 6 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:56,744 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:56,745 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:32:56,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 09:32:56,745 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 09:32:56,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:56,747 INFO L85 PathProgramCache]: Analyzing trace with hash -976333848, now seen corresponding path program 1 times [2022-11-20 09:32:56,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:56,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491291111] [2022-11-20 09:32:56,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:56,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:56,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:56,884 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 09:32:56,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:56,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491291111] [2022-11-20 09:32:56,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491291111] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:32:56,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139383780] [2022-11-20 09:32:56,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:56,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:56,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:32:56,895 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:32:56,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 09:32:57,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:57,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 09:32:57,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:57,095 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 09:32:57,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:32:57,164 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 09:32:57,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139383780] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:32:57,165 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:32:57,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-20 09:32:57,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34344497] [2022-11-20 09:32:57,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:32:57,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 09:32:57,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:57,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 09:32:57,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-20 09:32:57,169 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 175 [2022-11-20 09:32:57,172 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 163 transitions, 501 flow. Second operand has 12 states, 12 states have (on average 151.75) internal successors, (1821), 12 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states 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 09:32:57,172 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:32:57,172 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 175 [2022-11-20 09:32:57,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:32:58,047 INFO L130 PetriNetUnfolder]: 650/2562 cut-off events. [2022-11-20 09:32:58,048 INFO L131 PetriNetUnfolder]: For 679/679 co-relation queries the response was YES. [2022-11-20 09:32:58,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5192 conditions, 2562 events. 650/2562 cut-off events. For 679/679 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 23972 event pairs, 87 based on Foata normal form. 57/2314 useless extension candidates. Maximal degree in co-relation 5133. Up to 405 conditions per place. [2022-11-20 09:32:58,099 INFO L137 encePairwiseOnDemand]: 168/175 looper letters, 68 selfloop transitions, 18 changer transitions 0/230 dead transitions. [2022-11-20 09:32:58,100 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 230 transitions, 881 flow [2022-11-20 09:32:58,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 09:32:58,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 09:32:58,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2771 transitions. [2022-11-20 09:32:58,108 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8796825396825397 [2022-11-20 09:32:58,108 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2771 transitions. [2022-11-20 09:32:58,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2771 transitions. [2022-11-20 09:32:58,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:32:58,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2771 transitions. [2022-11-20 09:32:58,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 153.94444444444446) internal successors, (2771), 18 states have internal predecessors, (2771), 0 states have call successors, (0), 0 states 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 09:32:58,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 175.0) internal successors, (3325), 19 states have internal predecessors, (3325), 0 states have call successors, (0), 0 states 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 09:32:58,127 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 175.0) internal successors, (3325), 19 states have internal predecessors, (3325), 0 states have call successors, (0), 0 states 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 09:32:58,127 INFO L175 Difference]: Start difference. First operand has 190 places, 163 transitions, 501 flow. Second operand 18 states and 2771 transitions. [2022-11-20 09:32:58,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 230 transitions, 881 flow [2022-11-20 09:32:58,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 230 transitions, 865 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 09:32:58,134 INFO L231 Difference]: Finished difference. Result has 206 places, 175 transitions, 591 flow [2022-11-20 09:32:58,135 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=591, PETRI_PLACES=206, PETRI_TRANSITIONS=175} [2022-11-20 09:32:58,136 INFO L288 CegarLoopForPetriNet]: 150 programPoint places, 56 predicate places. [2022-11-20 09:32:58,136 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 175 transitions, 591 flow [2022-11-20 09:32:58,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 151.75) internal successors, (1821), 12 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states 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 09:32:58,138 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:58,138 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:32:58,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 09:32:58,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:58,344 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 09:32:58,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:58,345 INFO L85 PathProgramCache]: Analyzing trace with hash -201577758, now seen corresponding path program 1 times [2022-11-20 09:32:58,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:58,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581851757] [2022-11-20 09:32:58,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:58,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:58,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:58,474 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 09:32:58,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:58,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581851757] [2022-11-20 09:32:58,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581851757] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:32:58,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321055970] [2022-11-20 09:32:58,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:58,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:58,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:32:58,477 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:32:58,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 09:32:58,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:58,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 09:32:58,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:58,654 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 09:32:58,655 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:32:58,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321055970] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:58,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:32:58,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 09:32:58,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852358150] [2022-11-20 09:32:58,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:58,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:32:58,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:58,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:32:58,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:32:58,659 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 175 [2022-11-20 09:32:58,661 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 175 transitions, 591 flow. Second operand has 6 states, 6 states have (on average 151.5) internal successors, (909), 6 states have internal predecessors, (909), 0 states have call successors, (0), 0 states 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 09:32:58,661 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:32:58,661 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 175 [2022-11-20 09:32:58,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:32:59,400 INFO L130 PetriNetUnfolder]: 594/2412 cut-off events. [2022-11-20 09:32:59,401 INFO L131 PetriNetUnfolder]: For 1338/1338 co-relation queries the response was YES. [2022-11-20 09:32:59,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5296 conditions, 2412 events. 594/2412 cut-off events. For 1338/1338 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 22161 event pairs, 42 based on Foata normal form. 76/2199 useless extension candidates. Maximal degree in co-relation 5244. Up to 564 conditions per place. [2022-11-20 09:32:59,440 INFO L137 encePairwiseOnDemand]: 170/175 looper letters, 32 selfloop transitions, 11 changer transitions 0/187 dead transitions. [2022-11-20 09:32:59,441 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 187 transitions, 700 flow [2022-11-20 09:32:59,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:32:59,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 09:32:59,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1078 transitions. [2022-11-20 09:32:59,444 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.88 [2022-11-20 09:32:59,445 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1078 transitions. [2022-11-20 09:32:59,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1078 transitions. [2022-11-20 09:32:59,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:32:59,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1078 transitions. [2022-11-20 09:32:59,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 154.0) internal successors, (1078), 7 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 09:32:59,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 175.0) internal successors, (1400), 8 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states 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 09:32:59,470 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 175.0) internal successors, (1400), 8 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states 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 09:32:59,471 INFO L175 Difference]: Start difference. First operand has 206 places, 175 transitions, 591 flow. Second operand 7 states and 1078 transitions. [2022-11-20 09:32:59,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 187 transitions, 700 flow [2022-11-20 09:32:59,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 187 transitions, 668 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-20 09:32:59,482 INFO L231 Difference]: Finished difference. Result has 202 places, 171 transitions, 554 flow [2022-11-20 09:32:59,483 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=554, PETRI_PLACES=202, PETRI_TRANSITIONS=171} [2022-11-20 09:32:59,484 INFO L288 CegarLoopForPetriNet]: 150 programPoint places, 52 predicate places. [2022-11-20 09:32:59,484 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 171 transitions, 554 flow [2022-11-20 09:32:59,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 151.5) internal successors, (909), 6 states have internal predecessors, (909), 0 states have call successors, (0), 0 states 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 09:32:59,485 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:59,486 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:32:59,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 09:32:59,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 09:32:59,691 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 09:32:59,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:59,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1670403181, now seen corresponding path program 1 times [2022-11-20 09:32:59,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:59,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143555126] [2022-11-20 09:32:59,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:59,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:59,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:59,793 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:32:59,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:59,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143555126] [2022-11-20 09:32:59,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143555126] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:32:59,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049279620] [2022-11-20 09:32:59,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:59,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:59,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:32:59,799 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:32:59,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 09:32:59,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:59,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 09:32:59,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:33:00,196 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:33:00,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:33:00,534 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:33:00,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049279620] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:33:00,534 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:33:00,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 23 [2022-11-20 09:33:00,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904502068] [2022-11-20 09:33:00,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:33:00,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 09:33:00,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:33:00,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 09:33:00,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2022-11-20 09:33:00,544 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 175 [2022-11-20 09:33:00,547 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 171 transitions, 554 flow. Second operand has 23 states, 23 states have (on average 130.65217391304347) internal successors, (3005), 23 states have internal predecessors, (3005), 0 states have call successors, (0), 0 states 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 09:33:00,547 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:33:00,547 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 175 [2022-11-20 09:33:00,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:33:02,168 INFO L130 PetriNetUnfolder]: 586/2947 cut-off events. [2022-11-20 09:33:02,168 INFO L131 PetriNetUnfolder]: For 848/4576 co-relation queries the response was YES. [2022-11-20 09:33:02,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5657 conditions, 2947 events. 586/2947 cut-off events. For 848/4576 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 26807 event pairs, 132 based on Foata normal form. 82/2838 useless extension candidates. Maximal degree in co-relation 5482. Up to 263 conditions per place. [2022-11-20 09:33:02,287 INFO L137 encePairwiseOnDemand]: 157/175 looper letters, 141 selfloop transitions, 33 changer transitions 0/290 dead transitions. [2022-11-20 09:33:02,287 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 290 transitions, 1278 flow [2022-11-20 09:33:02,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-20 09:33:02,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-20 09:33:02,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3725 transitions. [2022-11-20 09:33:02,308 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7602040816326531 [2022-11-20 09:33:02,309 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3725 transitions. [2022-11-20 09:33:02,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3725 transitions. [2022-11-20 09:33:02,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:33:02,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3725 transitions. [2022-11-20 09:33:02,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 133.03571428571428) internal successors, (3725), 28 states have internal predecessors, (3725), 0 states have call successors, (0), 0 states 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 09:33:02,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 175.0) internal successors, (5075), 29 states have internal predecessors, (5075), 0 states have call successors, (0), 0 states 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 09:33:02,346 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 175.0) internal successors, (5075), 29 states have internal predecessors, (5075), 0 states have call successors, (0), 0 states 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 09:33:02,346 INFO L175 Difference]: Start difference. First operand has 202 places, 171 transitions, 554 flow. Second operand 28 states and 3725 transitions. [2022-11-20 09:33:02,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 290 transitions, 1278 flow [2022-11-20 09:33:02,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 290 transitions, 1264 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 09:33:02,357 INFO L231 Difference]: Finished difference. Result has 230 places, 186 transitions, 701 flow [2022-11-20 09:33:02,357 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=701, PETRI_PLACES=230, PETRI_TRANSITIONS=186} [2022-11-20 09:33:02,358 INFO L288 CegarLoopForPetriNet]: 150 programPoint places, 80 predicate places. [2022-11-20 09:33:02,358 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 186 transitions, 701 flow [2022-11-20 09:33:02,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 130.65217391304347) internal successors, (3005), 23 states have internal predecessors, (3005), 0 states have call successors, (0), 0 states 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 09:33:02,359 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:33:02,360 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:33:02,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 09:33:02,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:33:02,567 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 09:33:02,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:33:02,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1209409770, now seen corresponding path program 2 times [2022-11-20 09:33:02,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:33:02,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691640358] [2022-11-20 09:33:02,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:33:02,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:33:02,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:02,816 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 09:33:02,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:33:02,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691640358] [2022-11-20 09:33:02,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691640358] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:33:02,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171547505] [2022-11-20 09:33:02,817 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:33:02,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:33:02,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:33:02,823 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:33:02,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 09:33:02,922 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 09:33:02,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:33:02,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 09:33:02,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:33:03,101 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 09:33:03,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:33:03,259 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 09:33:03,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171547505] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:33:03,260 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:33:03,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-20 09:33:03,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120456487] [2022-11-20 09:33:03,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:33:03,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 09:33:03,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:33:03,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 09:33:03,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-20 09:33:03,266 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 175 [2022-11-20 09:33:03,268 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 186 transitions, 701 flow. Second operand has 18 states, 18 states have (on average 136.61111111111111) internal successors, (2459), 18 states have internal predecessors, (2459), 0 states have call successors, (0), 0 states 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 09:33:03,268 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:33:03,269 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 175 [2022-11-20 09:33:03,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:33:04,837 INFO L130 PetriNetUnfolder]: 392/3240 cut-off events. [2022-11-20 09:33:04,837 INFO L131 PetriNetUnfolder]: For 1532/4922 co-relation queries the response was YES. [2022-11-20 09:33:04,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5975 conditions, 3240 events. 392/3240 cut-off events. For 1532/4922 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 31399 event pairs, 352 based on Foata normal form. 26/3010 useless extension candidates. Maximal degree in co-relation 5928. Up to 270 conditions per place. [2022-11-20 09:33:04,899 INFO L137 encePairwiseOnDemand]: 164/175 looper letters, 117 selfloop transitions, 25 changer transitions 0/276 dead transitions. [2022-11-20 09:33:04,900 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 276 transitions, 1310 flow [2022-11-20 09:33:04,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 09:33:04,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-20 09:33:04,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3325 transitions. [2022-11-20 09:33:04,905 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7916666666666666 [2022-11-20 09:33:04,905 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3325 transitions. [2022-11-20 09:33:04,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3325 transitions. [2022-11-20 09:33:04,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:33:04,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3325 transitions. [2022-11-20 09:33:04,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 138.54166666666666) internal successors, (3325), 24 states have internal predecessors, (3325), 0 states have call successors, (0), 0 states 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 09:33:04,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 175.0) internal successors, (4375), 25 states have internal predecessors, (4375), 0 states have call successors, (0), 0 states 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 09:33:04,920 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 175.0) internal successors, (4375), 25 states have internal predecessors, (4375), 0 states have call successors, (0), 0 states 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 09:33:04,920 INFO L175 Difference]: Start difference. First operand has 230 places, 186 transitions, 701 flow. Second operand 24 states and 3325 transitions. [2022-11-20 09:33:04,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 276 transitions, 1310 flow [2022-11-20 09:33:04,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 276 transitions, 1259 flow, removed 5 selfloop flow, removed 16 redundant places. [2022-11-20 09:33:04,936 INFO L231 Difference]: Finished difference. Result has 237 places, 190 transitions, 725 flow [2022-11-20 09:33:04,936 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=640, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=725, PETRI_PLACES=237, PETRI_TRANSITIONS=190} [2022-11-20 09:33:04,937 INFO L288 CegarLoopForPetriNet]: 150 programPoint places, 87 predicate places. [2022-11-20 09:33:04,937 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 190 transitions, 725 flow [2022-11-20 09:33:04,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 136.61111111111111) internal successors, (2459), 18 states have internal predecessors, (2459), 0 states have call successors, (0), 0 states 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 09:33:04,938 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:33:04,938 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:33:04,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 09:33:05,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:33:05,144 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 09:33:05,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:33:05,144 INFO L85 PathProgramCache]: Analyzing trace with hash 2146989140, now seen corresponding path program 1 times [2022-11-20 09:33:05,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:33:05,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745648531] [2022-11-20 09:33:05,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:33:05,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:33:05,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:05,365 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 09:33:05,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:33:05,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745648531] [2022-11-20 09:33:05,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745648531] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:33:05,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465875058] [2022-11-20 09:33:05,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:33:05,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:33:05,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:33:05,369 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:33:05,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 09:33:05,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:05,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 09:33:05,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:33:05,660 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 09:33:05,660 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:33:05,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465875058] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:33:05,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:33:05,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2022-11-20 09:33:05,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549195798] [2022-11-20 09:33:05,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:33:05,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:33:05,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:33:05,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:33:05,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-11-20 09:33:05,665 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 175 [2022-11-20 09:33:05,666 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 190 transitions, 725 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 09:33:05,666 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:33:05,666 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 175 [2022-11-20 09:33:05,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:33:07,230 INFO L130 PetriNetUnfolder]: 1376/4928 cut-off events. [2022-11-20 09:33:07,230 INFO L131 PetriNetUnfolder]: For 2223/7103 co-relation queries the response was YES. [2022-11-20 09:33:07,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9921 conditions, 4928 events. 1376/4928 cut-off events. For 2223/7103 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 53972 event pairs, 352 based on Foata normal form. 232/4400 useless extension candidates. Maximal degree in co-relation 9394. Up to 1041 conditions per place. [2022-11-20 09:33:07,297 INFO L137 encePairwiseOnDemand]: 167/175 looper letters, 44 selfloop transitions, 11 changer transitions 6/216 dead transitions. [2022-11-20 09:33:07,297 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 216 transitions, 953 flow [2022-11-20 09:33:07,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:33:07,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 09:33:07,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1016 transitions. [2022-11-20 09:33:07,300 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8293877551020408 [2022-11-20 09:33:07,300 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1016 transitions. [2022-11-20 09:33:07,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1016 transitions. [2022-11-20 09:33:07,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:33:07,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1016 transitions. [2022-11-20 09:33:07,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 145.14285714285714) internal successors, (1016), 7 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states 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 09:33:07,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 175.0) internal successors, (1400), 8 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states 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 09:33:07,306 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 175.0) internal successors, (1400), 8 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states 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 09:33:07,306 INFO L175 Difference]: Start difference. First operand has 237 places, 190 transitions, 725 flow. Second operand 7 states and 1016 transitions. [2022-11-20 09:33:07,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 216 transitions, 953 flow [2022-11-20 09:33:07,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 216 transitions, 889 flow, removed 2 selfloop flow, removed 18 redundant places. [2022-11-20 09:33:07,334 INFO L231 Difference]: Finished difference. Result has 224 places, 186 transitions, 672 flow [2022-11-20 09:33:07,334 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=657, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=672, PETRI_PLACES=224, PETRI_TRANSITIONS=186} [2022-11-20 09:33:07,336 INFO L288 CegarLoopForPetriNet]: 150 programPoint places, 74 predicate places. [2022-11-20 09:33:07,336 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 186 transitions, 672 flow [2022-11-20 09:33:07,336 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 09:33:07,336 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:33:07,337 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:33:07,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 09:33:07,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:33:07,543 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 09:33:07,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:33:07,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1576349372, now seen corresponding path program 1 times [2022-11-20 09:33:07,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:33:07,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860041426] [2022-11-20 09:33:07,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:33:07,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:33:07,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:07,680 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-20 09:33:07,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:33:07,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860041426] [2022-11-20 09:33:07,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860041426] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:33:07,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159301157] [2022-11-20 09:33:07,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:33:07,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:33:07,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:33:07,683 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:33:07,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 09:33:07,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:07,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 09:33:07,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:33:07,853 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-20 09:33:07,853 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:33:07,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159301157] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:33:07,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:33:07,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 09:33:07,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688673467] [2022-11-20 09:33:07,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:33:07,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:33:07,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:33:07,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:33:07,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:33:07,857 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 175 [2022-11-20 09:33:07,858 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 186 transitions, 672 flow. Second operand has 6 states, 6 states have (on average 151.33333333333334) internal successors, (908), 6 states have internal predecessors, (908), 0 states have call successors, (0), 0 states 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 09:33:07,858 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:33:07,858 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 175 [2022-11-20 09:33:07,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:33:08,589 INFO L130 PetriNetUnfolder]: 318/2370 cut-off events. [2022-11-20 09:33:08,590 INFO L131 PetriNetUnfolder]: For 793/812 co-relation queries the response was YES. [2022-11-20 09:33:08,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4792 conditions, 2370 events. 318/2370 cut-off events. For 793/812 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 19581 event pairs, 38 based on Foata normal form. 30/2292 useless extension candidates. Maximal degree in co-relation 4715. Up to 236 conditions per place. [2022-11-20 09:33:08,628 INFO L137 encePairwiseOnDemand]: 170/175 looper letters, 32 selfloop transitions, 13 changer transitions 0/199 dead transitions. [2022-11-20 09:33:08,628 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 199 transitions, 798 flow [2022-11-20 09:33:08,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:33:08,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 09:33:08,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1077 transitions. [2022-11-20 09:33:08,631 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8791836734693877 [2022-11-20 09:33:08,632 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1077 transitions. [2022-11-20 09:33:08,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1077 transitions. [2022-11-20 09:33:08,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:33:08,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1077 transitions. [2022-11-20 09:33:08,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 153.85714285714286) internal successors, (1077), 7 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states 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 09:33:08,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 175.0) internal successors, (1400), 8 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states 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 09:33:08,638 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 175.0) internal successors, (1400), 8 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states 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 09:33:08,638 INFO L175 Difference]: Start difference. First operand has 224 places, 186 transitions, 672 flow. Second operand 7 states and 1077 transitions. [2022-11-20 09:33:08,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 199 transitions, 798 flow [2022-11-20 09:33:08,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 199 transitions, 774 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-11-20 09:33:08,650 INFO L231 Difference]: Finished difference. Result has 220 places, 184 transitions, 660 flow [2022-11-20 09:33:08,650 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=634, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=660, PETRI_PLACES=220, PETRI_TRANSITIONS=184} [2022-11-20 09:33:08,651 INFO L288 CegarLoopForPetriNet]: 150 programPoint places, 70 predicate places. [2022-11-20 09:33:08,651 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 184 transitions, 660 flow [2022-11-20 09:33:08,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 151.33333333333334) internal successors, (908), 6 states have internal predecessors, (908), 0 states have call successors, (0), 0 states 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 09:33:08,652 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:33:08,652 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 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, 1] [2022-11-20 09:33:08,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 09:33:08,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:33:08,858 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 09:33:08,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:33:08,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1263735318, now seen corresponding path program 2 times [2022-11-20 09:33:08,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:33:08,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480401708] [2022-11-20 09:33:08,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:33:08,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:33:08,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:09,245 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:33:09,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:33:09,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480401708] [2022-11-20 09:33:09,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480401708] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:33:09,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259205738] [2022-11-20 09:33:09,247 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:33:09,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:33:09,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:33:09,251 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:33:09,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 09:33:09,361 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 09:33:09,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:33:09,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 09:33:09,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:33:09,541 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 09:33:09,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:33:09,734 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 09:33:09,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259205738] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:33:09,735 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:33:09,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 19 [2022-11-20 09:33:09,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461339406] [2022-11-20 09:33:09,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:33:09,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 09:33:09,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:33:09,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 09:33:09,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-11-20 09:33:09,742 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 175 [2022-11-20 09:33:09,745 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 184 transitions, 660 flow. Second operand has 19 states, 19 states have (on average 128.21052631578948) internal successors, (2436), 19 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states 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 09:33:09,755 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:33:09,755 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 175 [2022-11-20 09:33:09,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:33:11,908 INFO L130 PetriNetUnfolder]: 603/3160 cut-off events. [2022-11-20 09:33:11,909 INFO L131 PetriNetUnfolder]: For 1514/1514 co-relation queries the response was YES. [2022-11-20 09:33:11,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6786 conditions, 3160 events. 603/3160 cut-off events. For 1514/1514 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 26756 event pairs, 52 based on Foata normal form. 25/3072 useless extension candidates. Maximal degree in co-relation 6672. Up to 324 conditions per place. [2022-11-20 09:33:11,956 INFO L137 encePairwiseOnDemand]: 157/175 looper letters, 172 selfloop transitions, 48 changer transitions 0/330 dead transitions. [2022-11-20 09:33:11,956 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 330 transitions, 1605 flow [2022-11-20 09:33:11,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-20 09:33:11,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-20 09:33:11,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 5166 transitions. [2022-11-20 09:33:11,966 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.738 [2022-11-20 09:33:11,966 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 5166 transitions. [2022-11-20 09:33:11,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 5166 transitions. [2022-11-20 09:33:11,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:33:11,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 5166 transitions. [2022-11-20 09:33:11,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 129.15) internal successors, (5166), 40 states have internal predecessors, (5166), 0 states have call successors, (0), 0 states 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 09:33:11,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 175.0) internal successors, (7175), 41 states have internal predecessors, (7175), 0 states have call successors, (0), 0 states 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 09:33:11,989 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 175.0) internal successors, (7175), 41 states have internal predecessors, (7175), 0 states have call successors, (0), 0 states 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 09:33:11,990 INFO L175 Difference]: Start difference. First operand has 220 places, 184 transitions, 660 flow. Second operand 40 states and 5166 transitions. [2022-11-20 09:33:11,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 330 transitions, 1605 flow [2022-11-20 09:33:12,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 330 transitions, 1565 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-11-20 09:33:12,004 INFO L231 Difference]: Finished difference. Result has 255 places, 195 transitions, 812 flow [2022-11-20 09:33:12,005 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=625, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=812, PETRI_PLACES=255, PETRI_TRANSITIONS=195} [2022-11-20 09:33:12,006 INFO L288 CegarLoopForPetriNet]: 150 programPoint places, 105 predicate places. [2022-11-20 09:33:12,007 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 195 transitions, 812 flow [2022-11-20 09:33:12,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 128.21052631578948) internal successors, (2436), 19 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states 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 09:33:12,008 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:33:12,008 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:33:12,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 09:33:12,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-20 09:33:12,213 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 09:33:12,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:33:12,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1199177096, now seen corresponding path program 2 times [2022-11-20 09:33:12,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:33:12,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109639759] [2022-11-20 09:33:12,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:33:12,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:33:12,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:12,406 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 09:33:12,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:33:12,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109639759] [2022-11-20 09:33:12,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109639759] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:33:12,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350369468] [2022-11-20 09:33:12,407 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:33:12,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:33:12,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:33:12,411 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:33:12,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 09:33:12,515 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 09:33:12,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:33:12,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 09:33:12,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:33:12,680 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 09:33:12,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:33:12,870 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 09:33:12,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350369468] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:33:12,870 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:33:12,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 15 [2022-11-20 09:33:12,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320821435] [2022-11-20 09:33:12,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:33:12,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 09:33:12,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:33:12,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 09:33:12,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-11-20 09:33:12,874 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 175 [2022-11-20 09:33:12,877 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 195 transitions, 812 flow. Second operand has 16 states, 16 states have (on average 145.6875) internal successors, (2331), 16 states have internal predecessors, (2331), 0 states have call successors, (0), 0 states 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 09:33:12,877 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:33:12,877 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 175 [2022-11-20 09:33:12,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:33:15,394 INFO L130 PetriNetUnfolder]: 3530/9002 cut-off events. [2022-11-20 09:33:15,394 INFO L131 PetriNetUnfolder]: For 4348/4428 co-relation queries the response was YES. [2022-11-20 09:33:15,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18908 conditions, 9002 events. 3530/9002 cut-off events. For 4348/4428 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 95246 event pairs, 154 based on Foata normal form. 119/7555 useless extension candidates. Maximal degree in co-relation 18766. Up to 1836 conditions per place. [2022-11-20 09:33:15,460 INFO L137 encePairwiseOnDemand]: 166/175 looper letters, 0 selfloop transitions, 0 changer transitions 278/278 dead transitions. [2022-11-20 09:33:15,461 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 278 transitions, 1278 flow [2022-11-20 09:33:15,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 09:33:15,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-20 09:33:15,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3242 transitions. [2022-11-20 09:33:15,466 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8420779220779221 [2022-11-20 09:33:15,466 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3242 transitions. [2022-11-20 09:33:15,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3242 transitions. [2022-11-20 09:33:15,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:33:15,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3242 transitions. [2022-11-20 09:33:15,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 147.36363636363637) internal successors, (3242), 22 states have internal predecessors, (3242), 0 states have call successors, (0), 0 states 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 09:33:15,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 175.0) internal successors, (4025), 23 states have internal predecessors, (4025), 0 states have call successors, (0), 0 states 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 09:33:15,482 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 175.0) internal successors, (4025), 23 states have internal predecessors, (4025), 0 states have call successors, (0), 0 states 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 09:33:15,482 INFO L175 Difference]: Start difference. First operand has 255 places, 195 transitions, 812 flow. Second operand 22 states and 3242 transitions. [2022-11-20 09:33:15,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 278 transitions, 1278 flow [2022-11-20 09:33:15,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 278 transitions, 1207 flow, removed 5 selfloop flow, removed 25 redundant places. [2022-11-20 09:33:15,510 INFO L231 Difference]: Finished difference. Result has 250 places, 0 transitions, 0 flow [2022-11-20 09:33:15,510 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=731, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=0, PETRI_PLACES=250, PETRI_TRANSITIONS=0} [2022-11-20 09:33:15,511 INFO L288 CegarLoopForPetriNet]: 150 programPoint places, 100 predicate places. [2022-11-20 09:33:15,511 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 0 transitions, 0 flow [2022-11-20 09:33:15,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 145.6875) internal successors, (2331), 16 states have internal predecessors, (2331), 0 states have call successors, (0), 0 states 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 09:33:15,515 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 17 remaining) [2022-11-20 09:33:15,516 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-11-20 09:33:15,516 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-11-20 09:33:15,516 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-11-20 09:33:15,516 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-11-20 09:33:15,516 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-11-20 09:33:15,517 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-11-20 09:33:15,517 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-11-20 09:33:15,517 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 17 remaining) [2022-11-20 09:33:15,517 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 17 remaining) [2022-11-20 09:33:15,517 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 17 remaining) [2022-11-20 09:33:15,518 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-11-20 09:33:15,518 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-11-20 09:33:15,518 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-11-20 09:33:15,518 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-11-20 09:33:15,519 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-11-20 09:33:15,519 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-11-20 09:33:15,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 09:33:15,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 09:33:15,733 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:33:15,741 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-20 09:33:15,741 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 09:33:15,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 09:33:15 BasicIcfg [2022-11-20 09:33:15,747 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 09:33:15,748 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 09:33:15,748 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 09:33:15,748 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 09:33:15,749 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:32:48" (3/4) ... [2022-11-20 09:33:15,752 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 09:33:15,759 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-20 09:33:15,759 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-20 09:33:15,759 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-20 09:33:15,767 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2022-11-20 09:33:15,768 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-20 09:33:15,768 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 09:33:15,768 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 09:33:15,839 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 09:33:15,839 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 09:33:15,840 INFO L158 Benchmark]: Toolchain (without parser) took 28760.55ms. Allocated memory was 192.9MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 147.1MB in the beginning and 1.0GB in the end (delta: -897.6MB). Peak memory consumption was 286.2MB. Max. memory is 16.1GB. [2022-11-20 09:33:15,840 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 148.9MB. Free memory is still 90.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 09:33:15,841 INFO L158 Benchmark]: CACSL2BoogieTranslator took 369.00ms. Allocated memory is still 192.9MB. Free memory was 147.1MB in the beginning and 135.9MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 09:33:15,841 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.39ms. Allocated memory is still 192.9MB. Free memory was 135.2MB in the beginning and 133.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 09:33:15,842 INFO L158 Benchmark]: Boogie Preprocessor took 35.57ms. Allocated memory is still 192.9MB. Free memory was 133.8MB in the beginning and 132.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 09:33:15,842 INFO L158 Benchmark]: RCFGBuilder took 631.41ms. Allocated memory is still 192.9MB. Free memory was 132.4MB in the beginning and 114.9MB in the end (delta: 17.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-20 09:33:15,843 INFO L158 Benchmark]: TraceAbstraction took 27527.18ms. Allocated memory was 192.9MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 114.3MB in the beginning and 1.0GB in the end (delta: -934.1MB). Peak memory consumption was 556.8MB. Max. memory is 16.1GB. [2022-11-20 09:33:15,843 INFO L158 Benchmark]: Witness Printer took 91.73ms. Allocated memory is still 1.4GB. Free memory was 1.0GB in the beginning and 1.0GB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 09:33:15,845 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 148.9MB. Free memory is still 90.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 369.00ms. Allocated memory is still 192.9MB. Free memory was 147.1MB in the beginning and 135.9MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 81.39ms. Allocated memory is still 192.9MB. Free memory was 135.2MB in the beginning and 133.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.57ms. Allocated memory is still 192.9MB. Free memory was 133.8MB in the beginning and 132.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 631.41ms. Allocated memory is still 192.9MB. Free memory was 132.4MB in the beginning and 114.9MB in the end (delta: 17.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 27527.18ms. Allocated memory was 192.9MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 114.3MB in the beginning and 1.0GB in the end (delta: -934.1MB). Peak memory consumption was 556.8MB. Max. memory is 16.1GB. * Witness Printer took 91.73ms. Allocated memory is still 1.4GB. Free memory was 1.0GB in the beginning and 1.0GB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 64]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 64]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 100]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 100]: 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, 212 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: 27.2s, OverallIterations: 16, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 17.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2383 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2383 mSDsluCounter, 458 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 365 mSDsCounter, 86 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2611 IncrementalHoareTripleChecker+Invalid, 2697 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 86 mSolverCounterUnsat, 93 mSDtfsCounter, 2611 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1758 GetRequests, 1453 SyntacticMatches, 12 SemanticMatches, 293 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1917 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=812occurred 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: 0.3s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 5.2s InterpolantComputationTime, 2309 NumberOfCodeBlocks, 2201 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 2824 ConstructedInterpolants, 0 QuantifiedInterpolants, 5886 SizeOfPredicates, 46 NumberOfNonLiveVariables, 2049 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 33 InterpolantComputations, 10 PerfectInterpolantSequences, 351/699 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 09:33:15,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d95422c-466c-4acc-9e32-1e3519cef621/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