./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f 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_e3b31aeb-5898-4e90-b8a4-3c140a60edbd/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3b31aeb-5898-4e90-b8a4-3c140a60edbd/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3b31aeb-5898-4e90-b8a4-3c140a60edbd/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3b31aeb-5898-4e90-b8a4-3c140a60edbd/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3b31aeb-5898-4e90-b8a4-3c140a60edbd/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3b31aeb-5898-4e90-b8a4-3c140a60edbd/bin/uautomizer-tPACEb0tL8 --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 3a95f2ef87fd1cf5c8213f05c50508f1a1765fc5482d62813e9c15181aaf2ab6 --- 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-e04fb08 [2022-11-16 11:05:25,369 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:05:25,372 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:05:25,403 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:05:25,404 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:05:25,408 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:05:25,411 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:05:25,419 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:05:25,423 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:05:25,428 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:05:25,429 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:05:25,430 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:05:25,431 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:05:25,432 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:05:25,433 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:05:25,434 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:05:25,435 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:05:25,436 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:05:25,437 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:05:25,447 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:05:25,450 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:05:25,452 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:05:25,456 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:05:25,457 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:05:25,469 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:05:25,470 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:05:25,470 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:05:25,471 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:05:25,472 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:05:25,473 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:05:25,473 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:05:25,474 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:05:25,475 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:05:25,476 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:05:25,477 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:05:25,477 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:05:25,478 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:05:25,478 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:05:25,479 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:05:25,480 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:05:25,481 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:05:25,484 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3b31aeb-5898-4e90-b8a4-3c140a60edbd/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 11:05:25,525 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:05:25,526 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:05:25,527 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:05:25,527 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:05:25,528 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:05:25,528 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:05:25,529 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:05:25,529 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:05:25,529 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:05:25,529 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:05:25,530 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:05:25,531 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:05:25,531 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:05:25,531 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:05:25,531 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:05:25,532 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:05:25,532 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:05:25,532 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:05:25,532 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 11:05:25,533 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:05:25,533 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:05:25,533 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:05:25,533 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:05:25,534 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:05:25,534 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:05:25,534 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:05:25,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:05:25,535 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:05:25,535 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:05:25,535 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:05:25,535 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:05:25,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:05:25,536 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:05:25,536 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:05:25,536 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:05:25,537 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_e3b31aeb-5898-4e90-b8a4-3c140a60edbd/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3b31aeb-5898-4e90-b8a4-3c140a60edbd/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a95f2ef87fd1cf5c8213f05c50508f1a1765fc5482d62813e9c15181aaf2ab6 [2022-11-16 11:05:25,921 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:05:25,956 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:05:25,960 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:05:25,961 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:05:25,963 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:05:25,964 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3b31aeb-5898-4e90-b8a4-3c140a60edbd/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c [2022-11-16 11:05:26,068 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3b31aeb-5898-4e90-b8a4-3c140a60edbd/bin/uautomizer-tPACEb0tL8/data/b2d31a517/c9131678c26d4a5581a2f03c99e079bc/FLAG8f7eeb2ad [2022-11-16 11:05:26,640 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:05:26,640 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3b31aeb-5898-4e90-b8a4-3c140a60edbd/sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c [2022-11-16 11:05:26,650 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3b31aeb-5898-4e90-b8a4-3c140a60edbd/bin/uautomizer-tPACEb0tL8/data/b2d31a517/c9131678c26d4a5581a2f03c99e079bc/FLAG8f7eeb2ad [2022-11-16 11:05:26,978 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3b31aeb-5898-4e90-b8a4-3c140a60edbd/bin/uautomizer-tPACEb0tL8/data/b2d31a517/c9131678c26d4a5581a2f03c99e079bc [2022-11-16 11:05:26,988 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:05:26,989 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:05:26,995 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:05:26,996 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:05:27,000 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:05:27,001 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:05:26" (1/1) ... [2022-11-16 11:05:27,003 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bb2c4ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:27, skipping insertion in model container [2022-11-16 11:05:27,003 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:05:26" (1/1) ... [2022-11-16 11:05:27,014 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:05:27,050 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:05:27,308 WARN L229 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_e3b31aeb-5898-4e90-b8a4-3c140a60edbd/sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c[2761,2774] [2022-11-16 11:05:27,316 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:05:27,330 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:05:27,355 WARN L229 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_e3b31aeb-5898-4e90-b8a4-3c140a60edbd/sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c[2761,2774] [2022-11-16 11:05:27,362 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:05:27,378 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:05:27,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:27 WrapperNode [2022-11-16 11:05:27,379 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:05:27,380 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:05:27,380 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:05:27,381 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:05:27,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:27" (1/1) ... [2022-11-16 11:05:27,412 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:27" (1/1) ... [2022-11-16 11:05:27,474 INFO L138 Inliner]: procedures = 25, calls = 51, calls flagged for inlining = 12, calls inlined = 16, statements flattened = 250 [2022-11-16 11:05:27,475 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:05:27,480 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:05:27,480 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:05:27,480 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:05:27,489 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:27" (1/1) ... [2022-11-16 11:05:27,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:27" (1/1) ... [2022-11-16 11:05:27,504 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:27" (1/1) ... [2022-11-16 11:05:27,504 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:27" (1/1) ... [2022-11-16 11:05:27,518 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:27" (1/1) ... [2022-11-16 11:05:27,524 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:27" (1/1) ... [2022-11-16 11:05:27,526 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:27" (1/1) ... [2022-11-16 11:05:27,528 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:27" (1/1) ... [2022-11-16 11:05:27,532 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:05:27,533 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:05:27,533 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:05:27,533 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:05:27,534 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:27" (1/1) ... [2022-11-16 11:05:27,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:05:27,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3b31aeb-5898-4e90-b8a4-3c140a60edbd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:05:27,575 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3b31aeb-5898-4e90-b8a4-3c140a60edbd/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:05:27,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3b31aeb-5898-4e90-b8a4-3c140a60edbd/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:05:27,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:05:27,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:05:27,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:05:27,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:05:27,628 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 11:05:27,628 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 11:05:27,628 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 11:05:27,628 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 11:05:27,628 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 11:05:27,629 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 11:05:27,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:05:27,629 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 11:05:27,629 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 11:05:27,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 11:05:27,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:05:27,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:05:27,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:05:27,631 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:05:27,803 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:05:27,806 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:05:28,523 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:05:28,952 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:05:28,952 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-16 11:05:28,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:05:28 BoogieIcfgContainer [2022-11-16 11:05:28,955 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:05:28,957 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:05:28,957 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:05:28,961 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:05:28,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:05:26" (1/3) ... [2022-11-16 11:05:28,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7052c914 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:05:28, skipping insertion in model container [2022-11-16 11:05:28,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:27" (2/3) ... [2022-11-16 11:05:28,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7052c914 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:05:28, skipping insertion in model container [2022-11-16 11:05:28,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:05:28" (3/3) ... [2022-11-16 11:05:28,964 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum-alt.wvr.c [2022-11-16 11:05:28,974 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:05:28,985 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:05:28,985 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2022-11-16 11:05:28,985 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:05:29,236 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 11:05:29,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 187 places, 189 transitions, 402 flow [2022-11-16 11:05:29,421 INFO L130 PetriNetUnfolder]: 12/186 cut-off events. [2022-11-16 11:05:29,421 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 11:05:29,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 186 events. 12/186 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 248 event pairs, 0 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 138. Up to 2 conditions per place. [2022-11-16 11:05:29,431 INFO L82 GeneralOperation]: Start removeDead. Operand has 187 places, 189 transitions, 402 flow [2022-11-16 11:05:29,438 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 164 places, 165 transitions, 345 flow [2022-11-16 11:05:29,449 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:05:29,456 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;@40577240, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:05:29,457 INFO L358 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2022-11-16 11:05:29,472 INFO L130 PetriNetUnfolder]: 3/63 cut-off events. [2022-11-16 11:05:29,472 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:05:29,473 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:29,474 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:29,474 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-16 11:05:29,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:29,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1126068733, now seen corresponding path program 1 times [2022-11-16 11:05:29,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:29,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759077076] [2022-11-16 11:05:29,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:29,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:29,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:30,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:05:30,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:30,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759077076] [2022-11-16 11:05:30,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759077076] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:30,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:30,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:05:30,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445989463] [2022-11-16 11:05:30,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:30,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:05:30,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:30,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:05:30,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:05:30,184 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 189 [2022-11-16 11:05:30,192 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 165 transitions, 345 flow. Second operand has 4 states, 4 states have (on average 142.5) internal successors, (570), 4 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:30,192 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:30,193 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 189 [2022-11-16 11:05:30,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:32,269 INFO L130 PetriNetUnfolder]: 1911/4061 cut-off events. [2022-11-16 11:05:32,270 INFO L131 PetriNetUnfolder]: For 600/610 co-relation queries the response was YES. [2022-11-16 11:05:32,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6930 conditions, 4061 events. 1911/4061 cut-off events. For 600/610 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 29332 event pairs, 910 based on Foata normal form. 384/2093 useless extension candidates. Maximal degree in co-relation 3281. Up to 1265 conditions per place. [2022-11-16 11:05:32,334 INFO L137 encePairwiseOnDemand]: 170/189 looper letters, 56 selfloop transitions, 4 changer transitions 3/180 dead transitions. [2022-11-16 11:05:32,334 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 180 transitions, 510 flow [2022-11-16 11:05:32,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:05:32,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:05:32,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 791 transitions. [2022-11-16 11:05:32,362 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.837037037037037 [2022-11-16 11:05:32,363 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 791 transitions. [2022-11-16 11:05:32,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 791 transitions. [2022-11-16 11:05:32,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:32,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 791 transitions. [2022-11-16 11:05:32,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 158.2) internal successors, (791), 5 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:32,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:32,396 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:32,399 INFO L175 Difference]: Start difference. First operand has 164 places, 165 transitions, 345 flow. Second operand 5 states and 791 transitions. [2022-11-16 11:05:32,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 180 transitions, 510 flow [2022-11-16 11:05:32,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 180 transitions, 492 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:05:32,417 INFO L231 Difference]: Finished difference. Result has 160 places, 152 transitions, 334 flow [2022-11-16 11:05:32,420 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=153, 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=334, PETRI_PLACES=160, PETRI_TRANSITIONS=152} [2022-11-16 11:05:32,434 INFO L288 CegarLoopForPetriNet]: 164 programPoint places, -4 predicate places. [2022-11-16 11:05:32,435 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 152 transitions, 334 flow [2022-11-16 11:05:32,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 142.5) internal successors, (570), 4 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:32,437 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:32,437 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:32,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:05:32,438 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-16 11:05:32,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:32,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1889659338, now seen corresponding path program 1 times [2022-11-16 11:05:32,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:32,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682243395] [2022-11-16 11:05:32,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:32,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:32,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:32,633 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:05:32,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:32,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682243395] [2022-11-16 11:05:32,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682243395] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:05:32,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046459479] [2022-11-16 11:05:32,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:32,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:05:32,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3b31aeb-5898-4e90-b8a4-3c140a60edbd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:05:32,643 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3b31aeb-5898-4e90-b8a4-3c140a60edbd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:05:32,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3b31aeb-5898-4e90-b8a4-3c140a60edbd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:05:32,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:32,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:05:32,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:05:33,004 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:05:33,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:05:33,104 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:05:33,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046459479] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:05:33,129 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:05:33,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-16 11:05:33,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317387718] [2022-11-16 11:05:33,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:05:33,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:05:33,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:33,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:05:33,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:05:33,145 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 189 [2022-11-16 11:05:33,148 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 152 transitions, 334 flow. Second operand has 12 states, 12 states have (on average 143.66666666666666) internal successors, (1724), 12 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:33,148 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:33,148 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 189 [2022-11-16 11:05:33,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:37,297 INFO L130 PetriNetUnfolder]: 4776/10071 cut-off events. [2022-11-16 11:05:37,298 INFO L131 PetriNetUnfolder]: For 431/456 co-relation queries the response was YES. [2022-11-16 11:05:37,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16801 conditions, 10071 events. 4776/10071 cut-off events. For 431/456 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 80047 event pairs, 2275 based on Foata normal form. 3/4209 useless extension candidates. Maximal degree in co-relation 13396. Up to 1260 conditions per place. [2022-11-16 11:05:37,415 INFO L137 encePairwiseOnDemand]: 182/189 looper letters, 128 selfloop transitions, 18 changer transitions 0/263 dead transitions. [2022-11-16 11:05:37,416 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 263 transitions, 894 flow [2022-11-16 11:05:37,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 11:05:37,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 11:05:37,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2687 transitions. [2022-11-16 11:05:37,424 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7898295120517342 [2022-11-16 11:05:37,424 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2687 transitions. [2022-11-16 11:05:37,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2687 transitions. [2022-11-16 11:05:37,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:37,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2687 transitions. [2022-11-16 11:05:37,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 149.27777777777777) internal successors, (2687), 18 states have internal predecessors, (2687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:37,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 189.0) internal successors, (3591), 19 states have internal predecessors, (3591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:37,447 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 189.0) internal successors, (3591), 19 states have internal predecessors, (3591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:37,447 INFO L175 Difference]: Start difference. First operand has 160 places, 152 transitions, 334 flow. Second operand 18 states and 2687 transitions. [2022-11-16 11:05:37,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 263 transitions, 894 flow [2022-11-16 11:05:37,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 263 transitions, 892 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:05:37,458 INFO L231 Difference]: Finished difference. Result has 177 places, 164 transitions, 438 flow [2022-11-16 11:05:37,459 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=438, PETRI_PLACES=177, PETRI_TRANSITIONS=164} [2022-11-16 11:05:37,460 INFO L288 CegarLoopForPetriNet]: 164 programPoint places, 13 predicate places. [2022-11-16 11:05:37,460 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 164 transitions, 438 flow [2022-11-16 11:05:37,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 143.66666666666666) internal successors, (1724), 12 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:37,462 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:37,463 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:37,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3b31aeb-5898-4e90-b8a4-3c140a60edbd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:05:37,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3b31aeb-5898-4e90-b8a4-3c140a60edbd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:05:37,671 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-16 11:05:37,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:37,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1550103327, now seen corresponding path program 1 times [2022-11-16 11:05:37,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:37,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191560378] [2022-11-16 11:05:37,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:37,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:37,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:37,934 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:05:37,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:37,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191560378] [2022-11-16 11:05:37,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191560378] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:05:37,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313659836] [2022-11-16 11:05:37,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:37,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:05:37,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3b31aeb-5898-4e90-b8a4-3c140a60edbd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:05:37,938 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3b31aeb-5898-4e90-b8a4-3c140a60edbd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:05:37,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3b31aeb-5898-4e90-b8a4-3c140a60edbd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:05:38,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:38,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:05:38,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:05:38,189 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:05:38,189 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:05:38,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313659836] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:38,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:05:38,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 11:05:38,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338640467] [2022-11-16 11:05:38,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:38,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:05:38,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:38,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:05:38,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:05:38,200 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 189 [2022-11-16 11:05:38,202 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 164 transitions, 438 flow. Second operand has 6 states, 6 states have (on average 143.33333333333334) internal successors, (860), 6 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:38,202 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:38,202 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 189 [2022-11-16 11:05:38,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:41,741 INFO L130 PetriNetUnfolder]: 4776/10067 cut-off events. [2022-11-16 11:05:41,741 INFO L131 PetriNetUnfolder]: For 467/492 co-relation queries the response was YES. [2022-11-16 11:05:41,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16819 conditions, 10067 events. 4776/10067 cut-off events. For 467/492 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 79748 event pairs, 2275 based on Foata normal form. 4/4206 useless extension candidates. Maximal degree in co-relation 13439. Up to 5024 conditions per place. [2022-11-16 11:05:41,841 INFO L137 encePairwiseOnDemand]: 184/189 looper letters, 57 selfloop transitions, 11 changer transitions 0/185 dead transitions. [2022-11-16 11:05:41,841 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 185 transitions, 605 flow [2022-11-16 11:05:41,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:05:41,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:05:41,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1047 transitions. [2022-11-16 11:05:41,844 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7913832199546486 [2022-11-16 11:05:41,845 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1047 transitions. [2022-11-16 11:05:41,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1047 transitions. [2022-11-16 11:05:41,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:41,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1047 transitions. [2022-11-16 11:05:41,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 149.57142857142858) internal successors, (1047), 7 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:41,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 189.0) internal successors, (1512), 8 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:41,853 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 189.0) internal successors, (1512), 8 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:41,853 INFO L175 Difference]: Start difference. First operand has 177 places, 164 transitions, 438 flow. Second operand 7 states and 1047 transitions. [2022-11-16 11:05:41,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 185 transitions, 605 flow [2022-11-16 11:05:41,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 185 transitions, 573 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-16 11:05:41,867 INFO L231 Difference]: Finished difference. Result has 173 places, 160 transitions, 401 flow [2022-11-16 11:05:41,868 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=401, PETRI_PLACES=173, PETRI_TRANSITIONS=160} [2022-11-16 11:05:41,870 INFO L288 CegarLoopForPetriNet]: 164 programPoint places, 9 predicate places. [2022-11-16 11:05:41,871 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 160 transitions, 401 flow [2022-11-16 11:05:41,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 143.33333333333334) internal successors, (860), 6 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:41,872 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:41,872 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] [2022-11-16 11:05:41,882 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3b31aeb-5898-4e90-b8a4-3c140a60edbd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-16 11:05:42,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3b31aeb-5898-4e90-b8a4-3c140a60edbd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:05:42,078 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-16 11:05:42,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:42,078 INFO L85 PathProgramCache]: Analyzing trace with hash -2139722390, now seen corresponding path program 1 times [2022-11-16 11:05:42,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:42,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055686653] [2022-11-16 11:05:42,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:42,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:42,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:42,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:05:42,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:42,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055686653] [2022-11-16 11:05:42,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055686653] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:42,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:42,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:05:42,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38152184] [2022-11-16 11:05:42,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:42,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:05:42,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:42,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:05:42,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:05:42,326 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 189 [2022-11-16 11:05:42,327 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 160 transitions, 401 flow. Second operand has 7 states, 7 states have (on average 133.14285714285714) internal successors, (932), 7 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:42,328 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:42,328 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 189 [2022-11-16 11:05:42,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:46,099 INFO L130 PetriNetUnfolder]: 7388/15344 cut-off events. [2022-11-16 11:05:46,099 INFO L131 PetriNetUnfolder]: For 364/379 co-relation queries the response was YES. [2022-11-16 11:05:46,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26248 conditions, 15344 events. 7388/15344 cut-off events. For 364/379 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 134272 event pairs, 4539 based on Foata normal form. 0/7101 useless extension candidates. Maximal degree in co-relation 24168. Up to 9477 conditions per place. [2022-11-16 11:05:46,243 INFO L137 encePairwiseOnDemand]: 180/189 looper letters, 79 selfloop transitions, 8 changer transitions 0/197 dead transitions. [2022-11-16 11:05:46,243 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 197 transitions, 658 flow [2022-11-16 11:05:46,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:05:46,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 11:05:46,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1130 transitions. [2022-11-16 11:05:46,248 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7473544973544973 [2022-11-16 11:05:46,249 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1130 transitions. [2022-11-16 11:05:46,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1130 transitions. [2022-11-16 11:05:46,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:46,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1130 transitions. [2022-11-16 11:05:46,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 141.25) internal successors, (1130), 8 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:46,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 189.0) internal successors, (1701), 9 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:46,258 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 189.0) internal successors, (1701), 9 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:46,258 INFO L175 Difference]: Start difference. First operand has 173 places, 160 transitions, 401 flow. Second operand 8 states and 1130 transitions. [2022-11-16 11:05:46,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 197 transitions, 658 flow [2022-11-16 11:05:46,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 197 transitions, 644 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:05:46,264 INFO L231 Difference]: Finished difference. Result has 178 places, 162 transitions, 419 flow [2022-11-16 11:05:46,265 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=419, PETRI_PLACES=178, PETRI_TRANSITIONS=162} [2022-11-16 11:05:46,265 INFO L288 CegarLoopForPetriNet]: 164 programPoint places, 14 predicate places. [2022-11-16 11:05:46,266 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 162 transitions, 419 flow [2022-11-16 11:05:46,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 133.14285714285714) internal successors, (932), 7 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:46,267 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:46,267 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] [2022-11-16 11:05:46,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:05:46,267 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-16 11:05:46,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:46,268 INFO L85 PathProgramCache]: Analyzing trace with hash -2003004642, now seen corresponding path program 1 times [2022-11-16 11:05:46,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:46,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195695282] [2022-11-16 11:05:46,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:46,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:46,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:46,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:05:46,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:46,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195695282] [2022-11-16 11:05:46,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195695282] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:46,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:46,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:05:46,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720934400] [2022-11-16 11:05:46,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:46,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:05:46,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:46,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:05:46,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:05:46,798 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 189 [2022-11-16 11:05:46,800 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 162 transitions, 419 flow. Second operand has 10 states, 10 states have (on average 111.7) internal successors, (1117), 10 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:46,801 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:46,801 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 189 [2022-11-16 11:05:46,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:50,998 INFO L130 PetriNetUnfolder]: 8183/16827 cut-off events. [2022-11-16 11:05:50,998 INFO L131 PetriNetUnfolder]: For 1402/1432 co-relation queries the response was YES. [2022-11-16 11:05:51,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30374 conditions, 16827 events. 8183/16827 cut-off events. For 1402/1432 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 147246 event pairs, 6773 based on Foata normal form. 30/9557 useless extension candidates. Maximal degree in co-relation 29665. Up to 11615 conditions per place. [2022-11-16 11:05:51,141 INFO L137 encePairwiseOnDemand]: 176/189 looper letters, 84 selfloop transitions, 12 changer transitions 2/195 dead transitions. [2022-11-16 11:05:51,142 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 195 transitions, 690 flow [2022-11-16 11:05:51,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 11:05:51,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-16 11:05:51,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1401 transitions. [2022-11-16 11:05:51,147 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6177248677248677 [2022-11-16 11:05:51,147 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1401 transitions. [2022-11-16 11:05:51,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1401 transitions. [2022-11-16 11:05:51,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:51,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1401 transitions. [2022-11-16 11:05:51,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 116.75) internal successors, (1401), 12 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:51,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 189.0) internal successors, (2457), 13 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:51,158 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 189.0) internal successors, (2457), 13 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:51,158 INFO L175 Difference]: Start difference. First operand has 178 places, 162 transitions, 419 flow. Second operand 12 states and 1401 transitions. [2022-11-16 11:05:51,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 195 transitions, 690 flow [2022-11-16 11:05:51,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 195 transitions, 680 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:05:51,167 INFO L231 Difference]: Finished difference. Result has 190 places, 166 transitions, 460 flow [2022-11-16 11:05:51,167 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=460, PETRI_PLACES=190, PETRI_TRANSITIONS=166} [2022-11-16 11:05:51,168 INFO L288 CegarLoopForPetriNet]: 164 programPoint places, 26 predicate places. [2022-11-16 11:05:51,168 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 166 transitions, 460 flow [2022-11-16 11:05:51,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 111.7) internal successors, (1117), 10 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:51,169 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:51,170 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] [2022-11-16 11:05:51,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:05:51,170 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-16 11:05:51,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:51,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1306317362, now seen corresponding path program 1 times [2022-11-16 11:05:51,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:51,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246472753] [2022-11-16 11:05:51,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:51,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:51,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:52,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:05:52,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:52,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246472753] [2022-11-16 11:05:52,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246472753] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:05:52,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832623466] [2022-11-16 11:05:52,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:52,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:05:52,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3b31aeb-5898-4e90-b8a4-3c140a60edbd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:05:52,092 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3b31aeb-5898-4e90-b8a4-3c140a60edbd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:05:52,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3b31aeb-5898-4e90-b8a4-3c140a60edbd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:05:52,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:52,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-16 11:05:52,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:05:52,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 11:05:52,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:05:52,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 11:05:52,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:05:52,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:05:53,007 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_107 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_107) |c_ULTIMATE.start_main_#t~ret12#1.base|) |c_ULTIMATE.start_main_#t~ret12#1.offset|) 9223372039002259456))) is different from false [2022-11-16 11:05:53,272 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:05:53,272 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2022-11-16 11:05:53,292 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:05:53,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 36 [2022-11-16 11:05:53,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:05:53,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832623466] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:05:53,589 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:05:53,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 34 [2022-11-16 11:05:53,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041451820] [2022-11-16 11:05:53,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:05:53,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-16 11:05:53,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:53,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-16 11:05:53,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=995, Unknown=7, NotChecked=64, Total=1190 [2022-11-16 11:05:53,595 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 189 [2022-11-16 11:05:53,600 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 166 transitions, 460 flow. Second operand has 35 states, 35 states have (on average 117.14285714285714) internal successors, (4100), 35 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:53,601 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:53,601 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 189 [2022-11-16 11:05:53,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:06:01,385 INFO L130 PetriNetUnfolder]: 15481/28368 cut-off events. [2022-11-16 11:06:01,385 INFO L131 PetriNetUnfolder]: For 768/824 co-relation queries the response was YES. [2022-11-16 11:06:01,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51255 conditions, 28368 events. 15481/28368 cut-off events. For 768/824 co-relation queries the response was YES. Maximal size of possible extension queue 960. Compared 253360 event pairs, 6457 based on Foata normal form. 0/13619 useless extension candidates. Maximal degree in co-relation 50708. Up to 14466 conditions per place. [2022-11-16 11:06:01,661 INFO L137 encePairwiseOnDemand]: 166/189 looper letters, 107 selfloop transitions, 32 changer transitions 0/239 dead transitions. [2022-11-16 11:06:01,661 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 239 transitions, 902 flow [2022-11-16 11:06:01,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-16 11:06:01,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-16 11:06:01,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2319 transitions. [2022-11-16 11:06:01,669 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.64578111946533 [2022-11-16 11:06:01,669 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2319 transitions. [2022-11-16 11:06:01,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2319 transitions. [2022-11-16 11:06:01,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:06:01,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2319 transitions. [2022-11-16 11:06:01,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 122.05263157894737) internal successors, (2319), 19 states have internal predecessors, (2319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:01,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 189.0) internal successors, (3780), 20 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:01,685 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 189.0) internal successors, (3780), 20 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:01,685 INFO L175 Difference]: Start difference. First operand has 190 places, 166 transitions, 460 flow. Second operand 19 states and 2319 transitions. [2022-11-16 11:06:01,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 239 transitions, 902 flow [2022-11-16 11:06:01,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 239 transitions, 887 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-16 11:06:01,694 INFO L231 Difference]: Finished difference. Result has 212 places, 193 transitions, 635 flow [2022-11-16 11:06:01,694 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=635, PETRI_PLACES=212, PETRI_TRANSITIONS=193} [2022-11-16 11:06:01,695 INFO L288 CegarLoopForPetriNet]: 164 programPoint places, 48 predicate places. [2022-11-16 11:06:01,695 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 193 transitions, 635 flow [2022-11-16 11:06:01,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 117.14285714285714) internal successors, (4100), 35 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:01,697 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:06:01,697 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] [2022-11-16 11:06:01,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3b31aeb-5898-4e90-b8a4-3c140a60edbd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:06:01,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3b31aeb-5898-4e90-b8a4-3c140a60edbd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-16 11:06:01,904 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-16 11:06:01,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:01,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1306317359, now seen corresponding path program 1 times [2022-11-16 11:06:01,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:01,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315151983] [2022-11-16 11:06:01,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:01,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:01,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:02,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:06:02,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:02,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315151983] [2022-11-16 11:06:02,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315151983] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:06:02,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302190520] [2022-11-16 11:06:02,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:02,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:06:02,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3b31aeb-5898-4e90-b8a4-3c140a60edbd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:06:02,775 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3b31aeb-5898-4e90-b8a4-3c140a60edbd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:06:02,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3b31aeb-5898-4e90-b8a4-3c140a60edbd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:06:02,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:02,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-16 11:06:02,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:06:03,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 11:06:03,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:06:03,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 11:06:03,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:06:03,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:06:03,644 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_134 (Array Int Int))) (<= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_134) |c_ULTIMATE.start_main_#t~ret12#1.base|) |c_ULTIMATE.start_main_#t~ret12#1.offset|) 4294967295)) is different from false [2022-11-16 11:06:03,703 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_134 (Array Int Int))) (<= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_134) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 4294967295)) is different from false [2022-11-16 11:06:03,765 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:06:03,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2022-11-16 11:06:03,775 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:06:03,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 32 [2022-11-16 11:06:03,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-16 11:06:03,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302190520] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:06:03,989 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:06:03,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 34 [2022-11-16 11:06:03,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908606114] [2022-11-16 11:06:03,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:06:03,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-16 11:06:03,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:03,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-16 11:06:03,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=935, Unknown=9, NotChecked=126, Total=1190 [2022-11-16 11:06:03,995 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 189 [2022-11-16 11:06:03,999 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 193 transitions, 635 flow. Second operand has 35 states, 35 states have (on average 117.14285714285714) internal successors, (4100), 35 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:04,000 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:06:04,000 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 189 [2022-11-16 11:06:04,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:06:12,855 INFO L130 PetriNetUnfolder]: 16014/29664 cut-off events. [2022-11-16 11:06:12,856 INFO L131 PetriNetUnfolder]: For 3822/4218 co-relation queries the response was YES. [2022-11-16 11:06:13,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57226 conditions, 29664 events. 16014/29664 cut-off events. For 3822/4218 co-relation queries the response was YES. Maximal size of possible extension queue 1027. Compared 270427 event pairs, 6810 based on Foata normal form. 2/14629 useless extension candidates. Maximal degree in co-relation 56649. Up to 15311 conditions per place. [2022-11-16 11:06:13,178 INFO L137 encePairwiseOnDemand]: 167/189 looper letters, 109 selfloop transitions, 35 changer transitions 0/244 dead transitions. [2022-11-16 11:06:13,178 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 244 transitions, 1070 flow [2022-11-16 11:06:13,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 11:06:13,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 11:06:13,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2203 transitions. [2022-11-16 11:06:13,186 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6475602586713698 [2022-11-16 11:06:13,186 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2203 transitions. [2022-11-16 11:06:13,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2203 transitions. [2022-11-16 11:06:13,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:06:13,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2203 transitions. [2022-11-16 11:06:13,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 122.38888888888889) internal successors, (2203), 18 states have internal predecessors, (2203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:13,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 189.0) internal successors, (3591), 19 states have internal predecessors, (3591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:13,201 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 189.0) internal successors, (3591), 19 states have internal predecessors, (3591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:13,202 INFO L175 Difference]: Start difference. First operand has 212 places, 193 transitions, 635 flow. Second operand 18 states and 2203 transitions. [2022-11-16 11:06:13,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 244 transitions, 1070 flow [2022-11-16 11:06:13,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 244 transitions, 1059 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-16 11:06:13,216 INFO L231 Difference]: Finished difference. Result has 225 places, 199 transitions, 738 flow [2022-11-16 11:06:13,217 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=620, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=738, PETRI_PLACES=225, PETRI_TRANSITIONS=199} [2022-11-16 11:06:13,218 INFO L288 CegarLoopForPetriNet]: 164 programPoint places, 61 predicate places. [2022-11-16 11:06:13,218 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 199 transitions, 738 flow [2022-11-16 11:06:13,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 117.14285714285714) internal successors, (4100), 35 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:13,220 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:06:13,220 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] [2022-11-16 11:06:13,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3b31aeb-5898-4e90-b8a4-3c140a60edbd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:06:13,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3b31aeb-5898-4e90-b8a4-3c140a60edbd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:06:13,426 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-16 11:06:13,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:13,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1306317357, now seen corresponding path program 1 times [2022-11-16 11:06:13,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:13,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794010189] [2022-11-16 11:06:13,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:13,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:13,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:13,757 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:06:13,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:13,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794010189] [2022-11-16 11:06:13,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794010189] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:13,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:13,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:06:13,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751636011] [2022-11-16 11:06:13,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:13,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:06:13,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:13,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:06:13,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:06:13,766 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 189 [2022-11-16 11:06:13,767 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 199 transitions, 738 flow. Second operand has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:13,767 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:06:13,767 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 189 [2022-11-16 11:06:13,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:06:18,747 INFO L130 PetriNetUnfolder]: 7839/20837 cut-off events. [2022-11-16 11:06:18,747 INFO L131 PetriNetUnfolder]: For 8694/8790 co-relation queries the response was YES. [2022-11-16 11:06:18,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38794 conditions, 20837 events. 7839/20837 cut-off events. For 8694/8790 co-relation queries the response was YES. Maximal size of possible extension queue 917. Compared 230806 event pairs, 1704 based on Foata normal form. 1/12168 useless extension candidates. Maximal degree in co-relation 38500. Up to 6886 conditions per place. [2022-11-16 11:06:19,002 INFO L137 encePairwiseOnDemand]: 185/189 looper letters, 44 selfloop transitions, 2 changer transitions 0/215 dead transitions. [2022-11-16 11:06:19,003 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 215 transitions, 877 flow [2022-11-16 11:06:19,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:06:19,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:06:19,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 492 transitions. [2022-11-16 11:06:19,005 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8677248677248677 [2022-11-16 11:06:19,006 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 492 transitions. [2022-11-16 11:06:19,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 492 transitions. [2022-11-16 11:06:19,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:06:19,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 492 transitions. [2022-11-16 11:06:19,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.0) internal successors, (492), 3 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:19,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:19,011 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:19,012 INFO L175 Difference]: Start difference. First operand has 225 places, 199 transitions, 738 flow. Second operand 3 states and 492 transitions. [2022-11-16 11:06:19,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 215 transitions, 877 flow [2022-11-16 11:06:19,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 215 transitions, 841 flow, removed 3 selfloop flow, removed 14 redundant places. [2022-11-16 11:06:19,045 INFO L231 Difference]: Finished difference. Result has 214 places, 198 transitions, 710 flow [2022-11-16 11:06:19,046 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=696, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=710, PETRI_PLACES=214, PETRI_TRANSITIONS=198} [2022-11-16 11:06:19,047 INFO L288 CegarLoopForPetriNet]: 164 programPoint places, 50 predicate places. [2022-11-16 11:06:19,047 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 198 transitions, 710 flow [2022-11-16 11:06:19,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:19,049 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:06:19,049 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] [2022-11-16 11:06:19,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:06:19,049 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-16 11:06:19,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:19,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1800110977, now seen corresponding path program 1 times [2022-11-16 11:06:19,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:19,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407794022] [2022-11-16 11:06:19,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:19,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:19,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:19,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:06:19,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:19,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407794022] [2022-11-16 11:06:19,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407794022] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:19,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:19,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:06:19,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908411085] [2022-11-16 11:06:19,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:19,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:06:19,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:19,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:06:19,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:06:19,567 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 189 [2022-11-16 11:06:19,569 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 198 transitions, 710 flow. Second operand has 10 states, 10 states have (on average 112.8) internal successors, (1128), 10 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:06:19,570 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:06:19,570 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 189 [2022-11-16 11:06:19,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand