./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9458d7da-d845-4817-b7ad-d7431611e897/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9458d7da-d845-4817-b7ad-d7431611e897/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9458d7da-d845-4817-b7ad-d7431611e897/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9458d7da-d845-4817-b7ad-d7431611e897/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9458d7da-d845-4817-b7ad-d7431611e897/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9458d7da-d845-4817-b7ad-d7431611e897/bin/uautomizer-TMbwUNV5ro --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 5fedede1a0cf545b0a275694256164e3eb4f49b22c80042adac647157728b27d --- 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-8393723 [2022-11-18 19:41:15,854 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:41:15,856 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:41:15,889 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:41:15,892 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:41:15,897 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:41:15,901 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:41:15,906 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:41:15,908 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:41:15,918 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:41:15,919 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:41:15,921 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:41:15,923 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:41:15,925 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:41:15,926 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:41:15,929 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:41:15,931 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:41:15,932 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:41:15,934 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:41:15,937 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:41:15,942 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:41:15,944 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:41:15,945 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:41:15,946 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:41:15,950 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:41:15,950 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:41:15,950 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:41:15,951 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:41:15,952 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:41:15,953 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:41:15,953 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:41:15,954 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:41:15,963 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:41:15,966 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:41:15,968 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:41:15,968 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:41:15,969 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:41:15,970 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:41:15,970 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:41:15,971 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:41:15,971 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:41:15,973 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9458d7da-d845-4817-b7ad-d7431611e897/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 19:41:16,004 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:41:16,005 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:41:16,005 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:41:16,005 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:41:16,006 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:41:16,006 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:41:16,007 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:41:16,007 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:41:16,007 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:41:16,008 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:41:16,008 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:41:16,008 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:41:16,008 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:41:16,008 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:41:16,009 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:41:16,009 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:41:16,009 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:41:16,009 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:41:16,009 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 19:41:16,010 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:41:16,010 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:41:16,010 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:41:16,010 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:41:16,011 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:41:16,011 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:41:16,011 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:41:16,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:41:16,011 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:41:16,012 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:41:16,012 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:41:16,012 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:41:16,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:41:16,012 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:41:16,013 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:41:16,013 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:41:16,013 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_9458d7da-d845-4817-b7ad-d7431611e897/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9458d7da-d845-4817-b7ad-d7431611e897/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fedede1a0cf545b0a275694256164e3eb4f49b22c80042adac647157728b27d [2022-11-18 19:41:16,384 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:41:16,410 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:41:16,413 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:41:16,415 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:41:16,416 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:41:16,418 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9458d7da-d845-4817-b7ad-d7431611e897/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2022-11-18 19:41:16,507 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9458d7da-d845-4817-b7ad-d7431611e897/bin/uautomizer-TMbwUNV5ro/data/74864b45e/c4b99c93eb8b4e64b1ff269903c61706/FLAG2f5d2d969 [2022-11-18 19:41:17,151 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:41:17,152 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9458d7da-d845-4817-b7ad-d7431611e897/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2022-11-18 19:41:17,161 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9458d7da-d845-4817-b7ad-d7431611e897/bin/uautomizer-TMbwUNV5ro/data/74864b45e/c4b99c93eb8b4e64b1ff269903c61706/FLAG2f5d2d969 [2022-11-18 19:41:17,506 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9458d7da-d845-4817-b7ad-d7431611e897/bin/uautomizer-TMbwUNV5ro/data/74864b45e/c4b99c93eb8b4e64b1ff269903c61706 [2022-11-18 19:41:17,509 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:41:17,511 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:41:17,513 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:41:17,513 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:41:17,522 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:41:17,523 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:41:17" (1/1) ... [2022-11-18 19:41:17,528 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b58ebcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:41:17, skipping insertion in model container [2022-11-18 19:41:17,529 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:41:17" (1/1) ... [2022-11-18 19:41:17,538 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:41:17,586 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:41:17,921 WARN L234 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_9458d7da-d845-4817-b7ad-d7431611e897/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c[4085,4098] [2022-11-18 19:41:17,936 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:41:17,955 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:41:18,025 WARN L234 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_9458d7da-d845-4817-b7ad-d7431611e897/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c[4085,4098] [2022-11-18 19:41:18,036 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:41:18,056 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:41:18,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:41:18 WrapperNode [2022-11-18 19:41:18,057 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:41:18,059 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:41:18,060 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:41:18,060 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:41:18,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:41:18" (1/1) ... [2022-11-18 19:41:18,095 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:41:18" (1/1) ... [2022-11-18 19:41:18,144 INFO L138 Inliner]: procedures = 25, calls = 63, calls flagged for inlining = 16, calls inlined = 20, statements flattened = 349 [2022-11-18 19:41:18,151 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:41:18,154 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:41:18,154 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:41:18,154 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:41:18,164 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:41:18" (1/1) ... [2022-11-18 19:41:18,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:41:18" (1/1) ... [2022-11-18 19:41:18,183 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:41:18" (1/1) ... [2022-11-18 19:41:18,189 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:41:18" (1/1) ... [2022-11-18 19:41:18,197 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:41:18" (1/1) ... [2022-11-18 19:41:18,213 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:41:18" (1/1) ... [2022-11-18 19:41:18,221 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:41:18" (1/1) ... [2022-11-18 19:41:18,223 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:41:18" (1/1) ... [2022-11-18 19:41:18,232 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:41:18,233 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:41:18,233 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:41:18,237 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:41:18,238 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:41:18" (1/1) ... [2022-11-18 19:41:18,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:41:18,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9458d7da-d845-4817-b7ad-d7431611e897/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:18,277 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9458d7da-d845-4817-b7ad-d7431611e897/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:41:18,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9458d7da-d845-4817-b7ad-d7431611e897/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:41:18,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:41:18,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:41:18,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:41:18,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 19:41:18,335 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 19:41:18,335 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 19:41:18,335 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 19:41:18,335 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 19:41:18,336 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 19:41:18,336 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 19:41:18,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:41:18,337 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 19:41:18,337 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 19:41:18,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 19:41:18,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:41:18,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:41:18,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:41:18,340 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 19:41:18,483 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:41:18,486 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:41:19,197 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:41:19,575 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:41:19,576 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-18 19:41:19,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:41:19 BoogieIcfgContainer [2022-11-18 19:41:19,580 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:41:19,584 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:41:19,584 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:41:19,588 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:41:19,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:41:17" (1/3) ... [2022-11-18 19:41:19,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3af3c161 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:41:19, skipping insertion in model container [2022-11-18 19:41:19,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:41:18" (2/3) ... [2022-11-18 19:41:19,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3af3c161 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:41:19, skipping insertion in model container [2022-11-18 19:41:19,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:41:19" (3/3) ... [2022-11-18 19:41:19,592 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring-nondet.wvr.c [2022-11-18 19:41:19,606 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 19:41:19,617 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:41:19,617 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2022-11-18 19:41:19,617 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 19:41:19,795 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 19:41:19,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 305 places, 320 transitions, 664 flow [2022-11-18 19:41:20,116 INFO L130 PetriNetUnfolder]: 25/317 cut-off events. [2022-11-18 19:41:20,117 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 19:41:20,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330 conditions, 317 events. 25/317 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 383 event pairs, 0 based on Foata normal form. 0/260 useless extension candidates. Maximal degree in co-relation 268. Up to 4 conditions per place. [2022-11-18 19:41:20,129 INFO L82 GeneralOperation]: Start removeDead. Operand has 305 places, 320 transitions, 664 flow [2022-11-18 19:41:20,144 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 282 places, 296 transitions, 607 flow [2022-11-18 19:41:20,165 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:41:20,175 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;@1ea5ad3e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:41:20,175 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2022-11-18 19:41:20,200 INFO L130 PetriNetUnfolder]: 3/77 cut-off events. [2022-11-18 19:41:20,201 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:41:20,201 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:41:20,202 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:20,204 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-11-18 19:41:20,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:20,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1854184304, now seen corresponding path program 1 times [2022-11-18 19:41:20,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:20,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503922425] [2022-11-18 19:41:20,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:20,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:20,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:20,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:20,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:20,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503922425] [2022-11-18 19:41:20,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503922425] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:41:20,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:41:20,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:41:20,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982425571] [2022-11-18 19:41:20,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:41:20,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:41:20,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:20,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:41:20,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:41:20,881 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 320 [2022-11-18 19:41:20,890 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 296 transitions, 607 flow. Second operand has 4 states, 4 states have (on average 232.5) internal successors, (930), 4 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:20,891 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:41:20,891 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 320 [2022-11-18 19:41:20,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:41:24,101 INFO L130 PetriNetUnfolder]: 4253/8798 cut-off events. [2022-11-18 19:41:24,101 INFO L131 PetriNetUnfolder]: For 512/512 co-relation queries the response was YES. [2022-11-18 19:41:24,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14891 conditions, 8798 events. 4253/8798 cut-off events. For 512/512 co-relation queries the response was YES. Maximal size of possible extension queue 1000. Compared 80211 event pairs, 2222 based on Foata normal form. 1032/5226 useless extension candidates. Maximal degree in co-relation 6749. Up to 2820 conditions per place. [2022-11-18 19:41:24,220 INFO L137 encePairwiseOnDemand]: 278/320 looper letters, 104 selfloop transitions, 14 changer transitions 7/328 dead transitions. [2022-11-18 19:41:24,221 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 328 transitions, 922 flow [2022-11-18 19:41:24,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:41:24,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:41:24,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1317 transitions. [2022-11-18 19:41:24,254 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.823125 [2022-11-18 19:41:24,255 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1317 transitions. [2022-11-18 19:41:24,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1317 transitions. [2022-11-18 19:41:24,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:41:24,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1317 transitions. [2022-11-18 19:41:24,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 263.4) internal successors, (1317), 5 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:24,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 320.0) internal successors, (1920), 6 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:24,290 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 320.0) internal successors, (1920), 6 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:24,292 INFO L175 Difference]: Start difference. First operand has 282 places, 296 transitions, 607 flow. Second operand 5 states and 1317 transitions. [2022-11-18 19:41:24,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 328 transitions, 922 flow [2022-11-18 19:41:24,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 328 transitions, 904 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 19:41:24,314 INFO L231 Difference]: Finished difference. Result has 278 places, 278 transitions, 644 flow [2022-11-18 19:41:24,317 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=644, PETRI_PLACES=278, PETRI_TRANSITIONS=278} [2022-11-18 19:41:24,321 INFO L288 CegarLoopForPetriNet]: 282 programPoint places, -4 predicate places. [2022-11-18 19:41:24,322 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 278 transitions, 644 flow [2022-11-18 19:41:24,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 232.5) internal successors, (930), 4 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:24,323 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:41:24,323 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] [2022-11-18 19:41:24,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:41:24,324 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-11-18 19:41:24,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:24,325 INFO L85 PathProgramCache]: Analyzing trace with hash 541435390, now seen corresponding path program 1 times [2022-11-18 19:41:24,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:24,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092698138] [2022-11-18 19:41:24,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:24,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:24,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:24,531 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:24,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:24,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092698138] [2022-11-18 19:41:24,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092698138] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:41:24,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931678980] [2022-11-18 19:41:24,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:24,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:24,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9458d7da-d845-4817-b7ad-d7431611e897/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:24,537 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9458d7da-d845-4817-b7ad-d7431611e897/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:41:24,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9458d7da-d845-4817-b7ad-d7431611e897/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:41:24,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:24,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:41:24,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:24,825 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:24,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:41:24,902 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:24,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931678980] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:41:24,903 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:41:24,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 19:41:24,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210764104] [2022-11-18 19:41:24,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:41:24,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:41:24,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:24,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:41:24,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:41:24,913 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 320 [2022-11-18 19:41:24,918 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 278 transitions, 644 flow. Second operand has 12 states, 12 states have (on average 233.66666666666666) internal successors, (2804), 12 states have internal predecessors, (2804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:24,918 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:41:24,918 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 320 [2022-11-18 19:41:24,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:41:30,767 INFO L130 PetriNetUnfolder]: 10631/21828 cut-off events. [2022-11-18 19:41:30,768 INFO L131 PetriNetUnfolder]: For 323/323 co-relation queries the response was YES. [2022-11-18 19:41:30,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36791 conditions, 21828 events. 10631/21828 cut-off events. For 323/323 co-relation queries the response was YES. Maximal size of possible extension queue 1185. Compared 217436 event pairs, 5555 based on Foata normal form. 9/10362 useless extension candidates. Maximal degree in co-relation 29064. Up to 2811 conditions per place. [2022-11-18 19:41:30,993 INFO L137 encePairwiseOnDemand]: 297/320 looper letters, 224 selfloop transitions, 62 changer transitions 0/489 dead transitions. [2022-11-18 19:41:30,994 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 489 transitions, 1740 flow [2022-11-18 19:41:30,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 19:41:30,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 19:41:31,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4453 transitions. [2022-11-18 19:41:31,004 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7730902777777777 [2022-11-18 19:41:31,005 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4453 transitions. [2022-11-18 19:41:31,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4453 transitions. [2022-11-18 19:41:31,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:41:31,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4453 transitions. [2022-11-18 19:41:31,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 247.38888888888889) internal successors, (4453), 18 states have internal predecessors, (4453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:31,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 320.0) internal successors, (6080), 19 states have internal predecessors, (6080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:31,032 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 320.0) internal successors, (6080), 19 states have internal predecessors, (6080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:31,032 INFO L175 Difference]: Start difference. First operand has 278 places, 278 transitions, 644 flow. Second operand 18 states and 4453 transitions. [2022-11-18 19:41:31,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 489 transitions, 1740 flow [2022-11-18 19:41:31,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 489 transitions, 1732 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:41:31,050 INFO L231 Difference]: Finished difference. Result has 291 places, 320 transitions, 1006 flow [2022-11-18 19:41:31,050 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=636, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1006, PETRI_PLACES=291, PETRI_TRANSITIONS=320} [2022-11-18 19:41:31,051 INFO L288 CegarLoopForPetriNet]: 282 programPoint places, 9 predicate places. [2022-11-18 19:41:31,051 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 320 transitions, 1006 flow [2022-11-18 19:41:31,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 233.66666666666666) internal successors, (2804), 12 states have internal predecessors, (2804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:31,054 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:41:31,055 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] [2022-11-18 19:41:31,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9458d7da-d845-4817-b7ad-d7431611e897/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:41:31,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9458d7da-d845-4817-b7ad-d7431611e897/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:31,261 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-11-18 19:41:31,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:31,262 INFO L85 PathProgramCache]: Analyzing trace with hash -395371096, now seen corresponding path program 1 times [2022-11-18 19:41:31,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:31,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99383003] [2022-11-18 19:41:31,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:31,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:31,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:31,521 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:31,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:31,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99383003] [2022-11-18 19:41:31,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99383003] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:41:31,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023113077] [2022-11-18 19:41:31,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:31,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:31,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9458d7da-d845-4817-b7ad-d7431611e897/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:31,525 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9458d7da-d845-4817-b7ad-d7431611e897/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:41:31,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9458d7da-d845-4817-b7ad-d7431611e897/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:41:31,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:31,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:41:31,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:31,740 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:31,740 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:41:31,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023113077] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:41:31,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:41:31,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 19:41:31,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27108622] [2022-11-18 19:41:31,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:41:31,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:41:31,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:31,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:41:31,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:41:31,752 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 320 [2022-11-18 19:41:31,754 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 320 transitions, 1006 flow. Second operand has 6 states, 6 states have (on average 233.33333333333334) internal successors, (1400), 6 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) [2022-11-18 19:41:31,754 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:41:31,754 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 320 [2022-11-18 19:41:31,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:41:36,690 INFO L130 PetriNetUnfolder]: 10631/21816 cut-off events. [2022-11-18 19:41:36,690 INFO L131 PetriNetUnfolder]: For 475/475 co-relation queries the response was YES. [2022-11-18 19:41:36,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36847 conditions, 21816 events. 10631/21816 cut-off events. For 475/475 co-relation queries the response was YES. Maximal size of possible extension queue 1189. Compared 217779 event pairs, 5555 based on Foata normal form. 12/10353 useless extension candidates. Maximal degree in co-relation 29434. Up to 11172 conditions per place. [2022-11-18 19:41:36,896 INFO L137 encePairwiseOnDemand]: 303/320 looper letters, 105 selfloop transitions, 43 changer transitions 0/351 dead transitions. [2022-11-18 19:41:36,897 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 351 transitions, 1319 flow [2022-11-18 19:41:36,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:41:36,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:41:36,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1735 transitions. [2022-11-18 19:41:36,902 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7745535714285714 [2022-11-18 19:41:36,902 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1735 transitions. [2022-11-18 19:41:36,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1735 transitions. [2022-11-18 19:41:36,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:41:36,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1735 transitions. [2022-11-18 19:41:36,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 247.85714285714286) internal successors, (1735), 7 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:36,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 320.0) internal successors, (2560), 8 states have internal predecessors, (2560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:36,916 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 320.0) internal successors, (2560), 8 states have internal predecessors, (2560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:36,917 INFO L175 Difference]: Start difference. First operand has 291 places, 320 transitions, 1006 flow. Second operand 7 states and 1735 transitions. [2022-11-18 19:41:36,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 351 transitions, 1319 flow [2022-11-18 19:41:36,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 351 transitions, 1203 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-11-18 19:41:36,929 INFO L231 Difference]: Finished difference. Result has 285 places, 308 transitions, 895 flow [2022-11-18 19:41:36,930 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=809, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=895, PETRI_PLACES=285, PETRI_TRANSITIONS=308} [2022-11-18 19:41:36,933 INFO L288 CegarLoopForPetriNet]: 282 programPoint places, 3 predicate places. [2022-11-18 19:41:36,933 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 308 transitions, 895 flow [2022-11-18 19:41:36,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 233.33333333333334) internal successors, (1400), 6 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) [2022-11-18 19:41:36,934 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:41:36,935 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] [2022-11-18 19:41:36,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9458d7da-d845-4817-b7ad-d7431611e897/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 19:41:37,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9458d7da-d845-4817-b7ad-d7431611e897/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:37,142 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-11-18 19:41:37,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:37,143 INFO L85 PathProgramCache]: Analyzing trace with hash 335244304, now seen corresponding path program 2 times [2022-11-18 19:41:37,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:37,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576107665] [2022-11-18 19:41:37,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:37,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:37,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:37,530 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:37,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:37,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576107665] [2022-11-18 19:41:37,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576107665] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:41:37,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567803247] [2022-11-18 19:41:37,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:41:37,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:37,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9458d7da-d845-4817-b7ad-d7431611e897/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:37,539 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9458d7da-d845-4817-b7ad-d7431611e897/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:41:37,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9458d7da-d845-4817-b7ad-d7431611e897/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 19:41:37,664 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 19:41:37,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:41:37,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 19:41:37,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:37,840 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 19:41:37,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:41:38,036 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 19:41:38,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567803247] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:41:38,037 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:41:38,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-18 19:41:38,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928001246] [2022-11-18 19:41:38,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:41:38,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 19:41:38,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:38,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 19:41:38,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-18 19:41:38,045 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 320 [2022-11-18 19:41:38,051 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 308 transitions, 895 flow. Second operand has 18 states, 18 states have (on average 213.61111111111111) internal successors, (3845), 18 states have internal predecessors, (3845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:38,051 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:41:38,051 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 320 [2022-11-18 19:41:38,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:41:44,458 INFO L130 PetriNetUnfolder]: 9346/23370 cut-off events. [2022-11-18 19:41:44,458 INFO L131 PetriNetUnfolder]: For 574/574 co-relation queries the response was YES. [2022-11-18 19:41:44,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38159 conditions, 23370 events. 9346/23370 cut-off events. For 574/574 co-relation queries the response was YES. Maximal size of possible extension queue 649. Compared 242474 event pairs, 6587 based on Foata normal form. 6/12659 useless extension candidates. Maximal degree in co-relation 32148. Up to 1950 conditions per place. [2022-11-18 19:41:44,650 INFO L137 encePairwiseOnDemand]: 290/320 looper letters, 304 selfloop transitions, 97 changer transitions 0/583 dead transitions. [2022-11-18 19:41:44,650 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 583 transitions, 2384 flow [2022-11-18 19:41:44,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-18 19:41:44,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-11-18 19:41:44,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 10711 transitions. [2022-11-18 19:41:44,680 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6830994897959184 [2022-11-18 19:41:44,680 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 10711 transitions. [2022-11-18 19:41:44,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 10711 transitions. [2022-11-18 19:41:44,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:41:44,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 10711 transitions. [2022-11-18 19:41:44,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 218.59183673469389) internal successors, (10711), 49 states have internal predecessors, (10711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:44,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 320.0) internal successors, (16000), 50 states have internal predecessors, (16000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:44,766 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 320.0) internal successors, (16000), 50 states have internal predecessors, (16000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:44,776 INFO L175 Difference]: Start difference. First operand has 285 places, 308 transitions, 895 flow. Second operand 49 states and 10711 transitions. [2022-11-18 19:41:44,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 583 transitions, 2384 flow [2022-11-18 19:41:44,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 583 transitions, 2315 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 19:41:44,792 INFO L231 Difference]: Finished difference. Result has 329 places, 346 transitions, 1234 flow [2022-11-18 19:41:44,794 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=827, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=1234, PETRI_PLACES=329, PETRI_TRANSITIONS=346} [2022-11-18 19:41:44,795 INFO L288 CegarLoopForPetriNet]: 282 programPoint places, 47 predicate places. [2022-11-18 19:41:44,796 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 346 transitions, 1234 flow [2022-11-18 19:41:44,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 213.61111111111111) internal successors, (3845), 18 states have internal predecessors, (3845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:44,798 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:41:44,799 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:44,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9458d7da-d845-4817-b7ad-d7431611e897/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 19:41:45,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9458d7da-d845-4817-b7ad-d7431611e897/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:45,005 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-11-18 19:41:45,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:45,005 INFO L85 PathProgramCache]: Analyzing trace with hash 575276157, now seen corresponding path program 1 times [2022-11-18 19:41:45,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:45,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274137017] [2022-11-18 19:41:45,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:45,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:45,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:45,566 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:45,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:45,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274137017] [2022-11-18 19:41:45,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274137017] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:41:45,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028865363] [2022-11-18 19:41:45,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:45,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:45,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9458d7da-d845-4817-b7ad-d7431611e897/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:45,572 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9458d7da-d845-4817-b7ad-d7431611e897/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:41:45,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9458d7da-d845-4817-b7ad-d7431611e897/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 19:41:45,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:45,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 19:41:45,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:45,918 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:45,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:41:46,499 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:46,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028865363] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:41:46,502 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:41:46,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-11-18 19:41:46,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455178389] [2022-11-18 19:41:46,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:41:46,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 19:41:46,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:46,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 19:41:46,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2022-11-18 19:41:46,517 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 320 [2022-11-18 19:41:46,525 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 346 transitions, 1234 flow. Second operand has 32 states, 32 states have (on average 234.28125) internal successors, (7497), 32 states have internal predecessors, (7497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:46,526 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:41:46,526 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 320 [2022-11-18 19:41:46,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:42:00,764 INFO L130 PetriNetUnfolder]: 23986/51800 cut-off events. [2022-11-18 19:42:00,765 INFO L131 PetriNetUnfolder]: For 1705/1705 co-relation queries the response was YES. [2022-11-18 19:42:00,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86429 conditions, 51800 events. 23986/51800 cut-off events. For 1705/1705 co-relation queries the response was YES. Maximal size of possible extension queue 984. Compared 545520 event pairs, 12870 based on Foata normal form. 16/26511 useless extension candidates. Maximal degree in co-relation 85729. Up to 2955 conditions per place. [2022-11-18 19:42:01,182 INFO L137 encePairwiseOnDemand]: 301/320 looper letters, 623 selfloop transitions, 160 changer transitions 0/992 dead transitions. [2022-11-18 19:42:01,183 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 992 transitions, 4877 flow [2022-11-18 19:42:01,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-18 19:42:01,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-18 19:42:01,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 10963 transitions. [2022-11-18 19:42:01,213 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.778622159090909 [2022-11-18 19:42:01,213 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 10963 transitions. [2022-11-18 19:42:01,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 10963 transitions. [2022-11-18 19:42:01,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:42:01,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 10963 transitions. [2022-11-18 19:42:01,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 249.1590909090909) internal successors, (10963), 44 states have internal predecessors, (10963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:01,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 320.0) internal successors, (14400), 45 states have internal predecessors, (14400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:01,279 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 320.0) internal successors, (14400), 45 states have internal predecessors, (14400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:01,279 INFO L175 Difference]: Start difference. First operand has 329 places, 346 transitions, 1234 flow. Second operand 44 states and 10963 transitions. [2022-11-18 19:42:01,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 992 transitions, 4877 flow [2022-11-18 19:42:01,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 992 transitions, 4623 flow, removed 73 selfloop flow, removed 15 redundant places. [2022-11-18 19:42:01,305 INFO L231 Difference]: Finished difference. Result has 366 places, 439 transitions, 2121 flow [2022-11-18 19:42:01,306 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=1111, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=2121, PETRI_PLACES=366, PETRI_TRANSITIONS=439} [2022-11-18 19:42:01,307 INFO L288 CegarLoopForPetriNet]: 282 programPoint places, 84 predicate places. [2022-11-18 19:42:01,307 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 439 transitions, 2121 flow [2022-11-18 19:42:01,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 234.28125) internal successors, (7497), 32 states have internal predecessors, (7497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:01,310 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:42:01,311 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:01,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9458d7da-d845-4817-b7ad-d7431611e897/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:01,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9458d7da-d845-4817-b7ad-d7431611e897/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:01,521 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-11-18 19:42:01,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:01,522 INFO L85 PathProgramCache]: Analyzing trace with hash 760751464, now seen corresponding path program 1 times [2022-11-18 19:42:01,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:01,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571512449] [2022-11-18 19:42:01,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:01,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:01,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:01,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:01,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:01,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571512449] [2022-11-18 19:42:01,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571512449] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:42:01,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:42:01,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:42:01,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511034270] [2022-11-18 19:42:01,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:42:01,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:42:01,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:01,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:42:01,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:42:01,782 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 320 [2022-11-18 19:42:01,783 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 439 transitions, 2121 flow. Second operand has 6 states, 6 states have (on average 234.0) internal successors, (1404), 6 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:01,784 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:42:01,784 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 320 [2022-11-18 19:42:01,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand