./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-atomic/read_write_lock-1.i --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_5a661064-a9de-4450-8366-86af2a20636a/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a661064-a9de-4450-8366-86af2a20636a/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_5a661064-a9de-4450-8366-86af2a20636a/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a661064-a9de-4450-8366-86af2a20636a/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-atomic/read_write_lock-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a661064-a9de-4450-8366-86af2a20636a/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_5a661064-a9de-4450-8366-86af2a20636a/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 8fab2e995569cc819974baee7d52d8d4bdabd2a2896c83fb3b8d07b44f394c5b --- 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 12:32:09,470 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:32:09,472 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:32:09,501 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:32:09,502 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:32:09,509 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:32:09,514 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:32:09,521 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:32:09,524 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:32:09,527 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:32:09,528 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:32:09,529 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:32:09,530 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:32:09,531 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:32:09,532 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:32:09,533 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:32:09,534 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:32:09,535 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:32:09,543 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:32:09,551 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:32:09,553 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:32:09,554 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:32:09,555 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:32:09,556 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:32:09,560 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:32:09,561 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:32:09,561 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:32:09,562 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:32:09,562 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:32:09,563 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:32:09,564 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:32:09,565 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:32:09,565 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:32:09,566 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:32:09,567 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:32:09,568 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:32:09,569 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:32:09,569 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:32:09,569 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:32:09,570 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:32:09,571 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:32:09,572 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a661064-a9de-4450-8366-86af2a20636a/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 12:32:09,597 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:32:09,597 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:32:09,598 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:32:09,598 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:32:09,599 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:32:09,612 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:32:09,613 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:32:09,614 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:32:09,614 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:32:09,614 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:32:09,614 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:32:09,614 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:32:09,615 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:32:09,615 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:32:09,615 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:32:09,616 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:32:09,616 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:32:09,616 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:32:09,616 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 12:32:09,617 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:32:09,617 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:32:09,617 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:32:09,617 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:32:09,618 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:32:09,618 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:32:09,618 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:32:09,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:32:09,619 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:32:09,619 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:32:09,619 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:32:09,620 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:32:09,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:32:09,620 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:32:09,620 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:32:09,621 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:32:09,621 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_5a661064-a9de-4450-8366-86af2a20636a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a661064-a9de-4450-8366-86af2a20636a/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8fab2e995569cc819974baee7d52d8d4bdabd2a2896c83fb3b8d07b44f394c5b [2022-11-16 12:32:09,886 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:32:09,909 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:32:09,913 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:32:09,914 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:32:09,919 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:32:09,921 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a661064-a9de-4450-8366-86af2a20636a/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/pthread-atomic/read_write_lock-1.i [2022-11-16 12:32:10,028 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a661064-a9de-4450-8366-86af2a20636a/bin/uautomizer-tPACEb0tL8/data/c63902c7e/b907ff8a08904ee29af51c2d6c955cdd/FLAGeaaa47a36 [2022-11-16 12:32:10,559 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:32:10,560 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a661064-a9de-4450-8366-86af2a20636a/sv-benchmarks/c/pthread-atomic/read_write_lock-1.i [2022-11-16 12:32:10,573 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a661064-a9de-4450-8366-86af2a20636a/bin/uautomizer-tPACEb0tL8/data/c63902c7e/b907ff8a08904ee29af51c2d6c955cdd/FLAGeaaa47a36 [2022-11-16 12:32:10,857 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a661064-a9de-4450-8366-86af2a20636a/bin/uautomizer-tPACEb0tL8/data/c63902c7e/b907ff8a08904ee29af51c2d6c955cdd [2022-11-16 12:32:10,859 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:32:10,861 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:32:10,866 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:32:10,866 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:32:10,870 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:32:10,871 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:32:10" (1/1) ... [2022-11-16 12:32:10,872 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@442f1dd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:10, skipping insertion in model container [2022-11-16 12:32:10,873 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:32:10" (1/1) ... [2022-11-16 12:32:10,888 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:32:10,933 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:32:11,279 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-16 12:32:11,535 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_5a661064-a9de-4450-8366-86af2a20636a/sv-benchmarks/c/pthread-atomic/read_write_lock-1.i[31246,31259] [2022-11-16 12:32:11,554 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:32:11,566 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:32:11,597 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-16 12:32:11,630 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_5a661064-a9de-4450-8366-86af2a20636a/sv-benchmarks/c/pthread-atomic/read_write_lock-1.i[31246,31259] [2022-11-16 12:32:11,649 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:32:11,694 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:32:11,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:11 WrapperNode [2022-11-16 12:32:11,695 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:32:11,697 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:32:11,697 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:32:11,697 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:32:11,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:11" (1/1) ... [2022-11-16 12:32:11,733 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:11" (1/1) ... [2022-11-16 12:32:11,777 INFO L138 Inliner]: procedures = 175, calls = 46, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 118 [2022-11-16 12:32:11,778 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:32:11,779 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:32:11,779 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:32:11,780 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:32:11,789 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:11" (1/1) ... [2022-11-16 12:32:11,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:11" (1/1) ... [2022-11-16 12:32:11,804 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:11" (1/1) ... [2022-11-16 12:32:11,805 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:11" (1/1) ... [2022-11-16 12:32:11,809 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:11" (1/1) ... [2022-11-16 12:32:11,813 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:11" (1/1) ... [2022-11-16 12:32:11,815 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:11" (1/1) ... [2022-11-16 12:32:11,816 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:11" (1/1) ... [2022-11-16 12:32:11,819 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:32:11,829 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:32:11,829 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:32:11,830 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:32:11,831 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:11" (1/1) ... [2022-11-16 12:32:11,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:32:11,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a661064-a9de-4450-8366-86af2a20636a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:32:11,876 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a661064-a9de-4450-8366-86af2a20636a/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:32:11,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a661064-a9de-4450-8366-86af2a20636a/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:32:11,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:32:11,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:32:11,925 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 12:32:11,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:32:11,926 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2022-11-16 12:32:11,926 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2022-11-16 12:32:11,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:32:11,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:32:11,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:32:11,926 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 12:32:11,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:32:11,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:32:11,927 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2022-11-16 12:32:11,927 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2022-11-16 12:32:11,929 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 12:32:12,080 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:32:12,086 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:32:12,456 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:32:12,551 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:32:12,551 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 12:32:12,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:32:12 BoogieIcfgContainer [2022-11-16 12:32:12,562 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:32:12,564 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:32:12,564 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:32:12,568 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:32:12,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:32:10" (1/3) ... [2022-11-16 12:32:12,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4df53d3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:32:12, skipping insertion in model container [2022-11-16 12:32:12,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:11" (2/3) ... [2022-11-16 12:32:12,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4df53d3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:32:12, skipping insertion in model container [2022-11-16 12:32:12,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:32:12" (3/3) ... [2022-11-16 12:32:12,572 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock-1.i [2022-11-16 12:32:12,581 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:32:12,593 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:32:12,594 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-16 12:32:12,594 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:32:12,694 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-16 12:32:12,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 118 transitions, 268 flow [2022-11-16 12:32:12,810 INFO L130 PetriNetUnfolder]: 2/114 cut-off events. [2022-11-16 12:32:12,810 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-16 12:32:12,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 114 events. 2/114 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 116 event pairs, 0 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 76. Up to 2 conditions per place. [2022-11-16 12:32:12,817 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 118 transitions, 268 flow [2022-11-16 12:32:12,823 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 111 places, 100 transitions, 221 flow [2022-11-16 12:32:12,834 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:32:12,842 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;@2b5368bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:32:12,842 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2022-11-16 12:32:12,859 INFO L130 PetriNetUnfolder]: 0/41 cut-off events. [2022-11-16 12:32:12,859 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:32:12,859 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:32:12,860 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] [2022-11-16 12:32:12,861 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-16 12:32:12,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:32:12,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1648259656, now seen corresponding path program 1 times [2022-11-16 12:32:12,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:32:12,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725054519] [2022-11-16 12:32:12,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:32:12,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:32:13,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:32:13,311 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 12:32:13,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:32:13,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725054519] [2022-11-16 12:32:13,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725054519] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:32:13,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:32:13,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:32:13,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641511255] [2022-11-16 12:32:13,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:32:13,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:32:13,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:32:13,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:32:13,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:32:13,366 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 118 [2022-11-16 12:32:13,369 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 100 transitions, 221 flow. Second operand has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states 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 12:32:13,370 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:32:13,370 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 118 [2022-11-16 12:32:13,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:32:14,103 INFO L130 PetriNetUnfolder]: 660/2605 cut-off events. [2022-11-16 12:32:14,104 INFO L131 PetriNetUnfolder]: For 661/661 co-relation queries the response was YES. [2022-11-16 12:32:14,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4110 conditions, 2605 events. 660/2605 cut-off events. For 661/661 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 24891 event pairs, 307 based on Foata normal form. 148/2391 useless extension candidates. Maximal degree in co-relation 3761. Up to 696 conditions per place. [2022-11-16 12:32:14,134 INFO L137 encePairwiseOnDemand]: 101/118 looper letters, 26 selfloop transitions, 7 changer transitions 0/109 dead transitions. [2022-11-16 12:32:14,135 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 109 transitions, 320 flow [2022-11-16 12:32:14,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:32:14,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:32:14,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 324 transitions. [2022-11-16 12:32:14,165 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9152542372881356 [2022-11-16 12:32:14,166 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 324 transitions. [2022-11-16 12:32:14,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 324 transitions. [2022-11-16 12:32:14,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:32:14,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 324 transitions. [2022-11-16 12:32:14,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states 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 12:32:14,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states 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 12:32:14,191 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states 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 12:32:14,193 INFO L175 Difference]: Start difference. First operand has 111 places, 100 transitions, 221 flow. Second operand 3 states and 324 transitions. [2022-11-16 12:32:14,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 109 transitions, 320 flow [2022-11-16 12:32:14,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 109 transitions, 298 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-16 12:32:14,214 INFO L231 Difference]: Finished difference. Result has 108 places, 104 transitions, 272 flow [2022-11-16 12:32:14,216 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=272, PETRI_PLACES=108, PETRI_TRANSITIONS=104} [2022-11-16 12:32:14,223 INFO L288 CegarLoopForPetriNet]: 111 programPoint places, -3 predicate places. [2022-11-16 12:32:14,224 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 104 transitions, 272 flow [2022-11-16 12:32:14,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states 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 12:32:14,225 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:32:14,225 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] [2022-11-16 12:32:14,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:32:14,226 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-16 12:32:14,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:32:14,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1263268002, now seen corresponding path program 1 times [2022-11-16 12:32:14,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:32:14,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864673876] [2022-11-16 12:32:14,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:32:14,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:32:14,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:32:14,439 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 12:32:14,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:32:14,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864673876] [2022-11-16 12:32:14,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864673876] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:32:14,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:32:14,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:32:14,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142763928] [2022-11-16 12:32:14,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:32:14,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:32:14,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:32:14,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:32:14,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:32:14,458 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 118 [2022-11-16 12:32:14,460 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 104 transitions, 272 flow. Second operand has 4 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states 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 12:32:14,461 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:32:14,461 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 118 [2022-11-16 12:32:14,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:32:14,981 INFO L130 PetriNetUnfolder]: 558/2191 cut-off events. [2022-11-16 12:32:14,981 INFO L131 PetriNetUnfolder]: For 706/945 co-relation queries the response was YES. [2022-11-16 12:32:14,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4416 conditions, 2191 events. 558/2191 cut-off events. For 706/945 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 20048 event pairs, 152 based on Foata normal form. 35/1924 useless extension candidates. Maximal degree in co-relation 3941. Up to 480 conditions per place. [2022-11-16 12:32:15,007 INFO L137 encePairwiseOnDemand]: 105/118 looper letters, 27 selfloop transitions, 13 changer transitions 0/116 dead transitions. [2022-11-16 12:32:15,007 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 116 transitions, 397 flow [2022-11-16 12:32:15,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:32:15,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:32:15,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 416 transitions. [2022-11-16 12:32:15,011 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8813559322033898 [2022-11-16 12:32:15,011 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 416 transitions. [2022-11-16 12:32:15,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 416 transitions. [2022-11-16 12:32:15,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:32:15,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 416 transitions. [2022-11-16 12:32:15,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 0 states 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 12:32:15,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 0 states have call successors, (0), 0 states 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 12:32:15,019 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 0 states have call successors, (0), 0 states 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 12:32:15,020 INFO L175 Difference]: Start difference. First operand has 108 places, 104 transitions, 272 flow. Second operand 4 states and 416 transitions. [2022-11-16 12:32:15,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 116 transitions, 397 flow [2022-11-16 12:32:15,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 116 transitions, 379 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:32:15,034 INFO L231 Difference]: Finished difference. Result has 109 places, 106 transitions, 317 flow [2022-11-16 12:32:15,035 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=317, PETRI_PLACES=109, PETRI_TRANSITIONS=106} [2022-11-16 12:32:15,036 INFO L288 CegarLoopForPetriNet]: 111 programPoint places, -2 predicate places. [2022-11-16 12:32:15,036 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 106 transitions, 317 flow [2022-11-16 12:32:15,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states 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 12:32:15,037 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:32:15,037 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] [2022-11-16 12:32:15,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:32:15,038 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-16 12:32:15,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:32:15,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1263268001, now seen corresponding path program 1 times [2022-11-16 12:32:15,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:32:15,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070832569] [2022-11-16 12:32:15,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:32:15,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:32:15,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:32:15,225 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 12:32:15,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:32:15,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070832569] [2022-11-16 12:32:15,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070832569] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:32:15,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:32:15,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:32:15,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232719830] [2022-11-16 12:32:15,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:32:15,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:32:15,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:32:15,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:32:15,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:32:15,233 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 118 [2022-11-16 12:32:15,234 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 106 transitions, 317 flow. Second operand has 4 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states 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 12:32:15,234 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:32:15,235 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 118 [2022-11-16 12:32:15,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:32:15,566 INFO L130 PetriNetUnfolder]: 211/1159 cut-off events. [2022-11-16 12:32:15,566 INFO L131 PetriNetUnfolder]: For 798/860 co-relation queries the response was YES. [2022-11-16 12:32:15,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2317 conditions, 1159 events. 211/1159 cut-off events. For 798/860 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 9501 event pairs, 55 based on Foata normal form. 120/1223 useless extension candidates. Maximal degree in co-relation 2005. Up to 211 conditions per place. [2022-11-16 12:32:15,577 INFO L137 encePairwiseOnDemand]: 105/118 looper letters, 29 selfloop transitions, 11 changer transitions 4/120 dead transitions. [2022-11-16 12:32:15,577 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 120 transitions, 461 flow [2022-11-16 12:32:15,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:32:15,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:32:15,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 420 transitions. [2022-11-16 12:32:15,579 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8898305084745762 [2022-11-16 12:32:15,580 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 420 transitions. [2022-11-16 12:32:15,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 420 transitions. [2022-11-16 12:32:15,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:32:15,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 420 transitions. [2022-11-16 12:32:15,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 0 states have call successors, (0), 0 states 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 12:32:15,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 0 states have call successors, (0), 0 states 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 12:32:15,585 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 0 states have call successors, (0), 0 states 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 12:32:15,585 INFO L175 Difference]: Start difference. First operand has 109 places, 106 transitions, 317 flow. Second operand 4 states and 420 transitions. [2022-11-16 12:32:15,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 120 transitions, 461 flow [2022-11-16 12:32:15,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 120 transitions, 443 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:32:15,595 INFO L231 Difference]: Finished difference. Result has 112 places, 104 transitions, 338 flow [2022-11-16 12:32:15,595 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=338, PETRI_PLACES=112, PETRI_TRANSITIONS=104} [2022-11-16 12:32:15,598 INFO L288 CegarLoopForPetriNet]: 111 programPoint places, 1 predicate places. [2022-11-16 12:32:15,599 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 104 transitions, 338 flow [2022-11-16 12:32:15,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states 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 12:32:15,599 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:32:15,600 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:32:15,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:32:15,600 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-16 12:32:15,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:32:15,601 INFO L85 PathProgramCache]: Analyzing trace with hash -2043856533, now seen corresponding path program 1 times [2022-11-16 12:32:15,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:32:15,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549236804] [2022-11-16 12:32:15,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:32:15,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:32:15,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:32:15,742 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 12:32:15,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:32:15,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549236804] [2022-11-16 12:32:15,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549236804] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:32:15,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:32:15,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:32:15,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503790695] [2022-11-16 12:32:15,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:32:15,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:32:15,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:32:15,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:32:15,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:32:15,752 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 118 [2022-11-16 12:32:15,753 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 104 transitions, 338 flow. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states 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 12:32:15,753 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:32:15,754 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 118 [2022-11-16 12:32:15,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:32:15,971 INFO L130 PetriNetUnfolder]: 160/1043 cut-off events. [2022-11-16 12:32:15,971 INFO L131 PetriNetUnfolder]: For 995/1047 co-relation queries the response was YES. [2022-11-16 12:32:15,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2219 conditions, 1043 events. 160/1043 cut-off events. For 995/1047 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 8302 event pairs, 118 based on Foata normal form. 19/987 useless extension candidates. Maximal degree in co-relation 1882. Up to 379 conditions per place. [2022-11-16 12:32:15,980 INFO L137 encePairwiseOnDemand]: 115/118 looper letters, 25 selfloop transitions, 1 changer transitions 0/102 dead transitions. [2022-11-16 12:32:15,980 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 102 transitions, 378 flow [2022-11-16 12:32:15,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:32:15,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:32:15,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 299 transitions. [2022-11-16 12:32:15,982 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.844632768361582 [2022-11-16 12:32:15,982 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 299 transitions. [2022-11-16 12:32:15,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 299 transitions. [2022-11-16 12:32:15,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:32:15,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 299 transitions. [2022-11-16 12:32:15,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states 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 12:32:15,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states 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 12:32:15,985 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states 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 12:32:15,985 INFO L175 Difference]: Start difference. First operand has 112 places, 104 transitions, 338 flow. Second operand 3 states and 299 transitions. [2022-11-16 12:32:15,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 102 transitions, 378 flow [2022-11-16 12:32:15,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 102 transitions, 371 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:32:15,991 INFO L231 Difference]: Finished difference. Result has 111 places, 102 transitions, 321 flow [2022-11-16 12:32:15,991 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=321, PETRI_PLACES=111, PETRI_TRANSITIONS=102} [2022-11-16 12:32:15,992 INFO L288 CegarLoopForPetriNet]: 111 programPoint places, 0 predicate places. [2022-11-16 12:32:15,992 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 102 transitions, 321 flow [2022-11-16 12:32:15,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states 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 12:32:15,993 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:32:15,993 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:32:15,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:32:15,993 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-16 12:32:15,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:32:15,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1281655370, now seen corresponding path program 1 times [2022-11-16 12:32:15,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:32:15,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860683011] [2022-11-16 12:32:15,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:32:15,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:32:16,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:32:16,094 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 12:32:16,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:32:16,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860683011] [2022-11-16 12:32:16,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860683011] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:32:16,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:32:16,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:32:16,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126823147] [2022-11-16 12:32:16,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:32:16,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:32:16,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:32:16,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:32:16,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:32:16,098 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 118 [2022-11-16 12:32:16,098 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 102 transitions, 321 flow. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states 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 12:32:16,098 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:32:16,099 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 118 [2022-11-16 12:32:16,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:32:16,272 INFO L130 PetriNetUnfolder]: 125/873 cut-off events. [2022-11-16 12:32:16,272 INFO L131 PetriNetUnfolder]: For 846/898 co-relation queries the response was YES. [2022-11-16 12:32:16,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1704 conditions, 873 events. 125/873 cut-off events. For 846/898 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 6438 event pairs, 90 based on Foata normal form. 31/830 useless extension candidates. Maximal degree in co-relation 1683. Up to 283 conditions per place. [2022-11-16 12:32:16,280 INFO L137 encePairwiseOnDemand]: 115/118 looper letters, 19 selfloop transitions, 1 changer transitions 2/98 dead transitions. [2022-11-16 12:32:16,280 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 98 transitions, 329 flow [2022-11-16 12:32:16,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:32:16,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:32:16,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 297 transitions. [2022-11-16 12:32:16,297 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8389830508474576 [2022-11-16 12:32:16,297 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 297 transitions. [2022-11-16 12:32:16,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 297 transitions. [2022-11-16 12:32:16,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:32:16,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 297 transitions. [2022-11-16 12:32:16,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states 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 12:32:16,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states 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 12:32:16,301 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states 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 12:32:16,301 INFO L175 Difference]: Start difference. First operand has 111 places, 102 transitions, 321 flow. Second operand 3 states and 297 transitions. [2022-11-16 12:32:16,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 98 transitions, 329 flow [2022-11-16 12:32:16,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 98 transitions, 313 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:32:16,305 INFO L231 Difference]: Finished difference. Result has 108 places, 96 transitions, 259 flow [2022-11-16 12:32:16,306 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=259, PETRI_PLACES=108, PETRI_TRANSITIONS=96} [2022-11-16 12:32:16,309 INFO L288 CegarLoopForPetriNet]: 111 programPoint places, -3 predicate places. [2022-11-16 12:32:16,309 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 96 transitions, 259 flow [2022-11-16 12:32:16,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states 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 12:32:16,309 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:32:16,310 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] [2022-11-16 12:32:16,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:32:16,310 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-16 12:32:16,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:32:16,312 INFO L85 PathProgramCache]: Analyzing trace with hash -728842447, now seen corresponding path program 1 times [2022-11-16 12:32:16,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:32:16,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844498273] [2022-11-16 12:32:16,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:32:16,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:32:16,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:32:16,458 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 12:32:16,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:32:16,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844498273] [2022-11-16 12:32:16,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844498273] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:32:16,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:32:16,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:32:16,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758900715] [2022-11-16 12:32:16,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:32:16,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:32:16,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:32:16,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:32:16,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:32:16,462 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 118 [2022-11-16 12:32:16,463 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 96 transitions, 259 flow. Second operand has 5 states, 5 states have (on average 94.8) internal successors, (474), 5 states have internal predecessors, (474), 0 states have call successors, (0), 0 states 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 12:32:16,463 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:32:16,463 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 118 [2022-11-16 12:32:16,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:32:16,628 INFO L130 PetriNetUnfolder]: 86/770 cut-off events. [2022-11-16 12:32:16,628 INFO L131 PetriNetUnfolder]: For 427/447 co-relation queries the response was YES. [2022-11-16 12:32:16,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1354 conditions, 770 events. 86/770 cut-off events. For 427/447 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 5653 event pairs, 25 based on Foata normal form. 30/729 useless extension candidates. Maximal degree in co-relation 1334. Up to 102 conditions per place. [2022-11-16 12:32:16,633 INFO L137 encePairwiseOnDemand]: 109/118 looper letters, 0 selfloop transitions, 0 changer transitions 106/106 dead transitions. [2022-11-16 12:32:16,633 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 106 transitions, 347 flow [2022-11-16 12:32:16,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:32:16,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:32:16,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 499 transitions. [2022-11-16 12:32:16,636 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8457627118644068 [2022-11-16 12:32:16,636 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 499 transitions. [2022-11-16 12:32:16,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 499 transitions. [2022-11-16 12:32:16,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:32:16,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 499 transitions. [2022-11-16 12:32:16,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 99.8) internal successors, (499), 5 states have internal predecessors, (499), 0 states have call successors, (0), 0 states 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 12:32:16,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 0 states have call successors, (0), 0 states 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 12:32:16,641 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 0 states have call successors, (0), 0 states 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 12:32:16,641 INFO L175 Difference]: Start difference. First operand has 108 places, 96 transitions, 259 flow. Second operand 5 states and 499 transitions. [2022-11-16 12:32:16,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 106 transitions, 347 flow [2022-11-16 12:32:16,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 106 transitions, 337 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:32:16,644 INFO L231 Difference]: Finished difference. Result has 107 places, 0 transitions, 0 flow [2022-11-16 12:32:16,644 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=107, PETRI_TRANSITIONS=0} [2022-11-16 12:32:16,645 INFO L288 CegarLoopForPetriNet]: 111 programPoint places, -4 predicate places. [2022-11-16 12:32:16,645 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 0 transitions, 0 flow [2022-11-16 12:32:16,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 94.8) internal successors, (474), 5 states have internal predecessors, (474), 0 states have call successors, (0), 0 states 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 12:32:16,648 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2022-11-16 12:32:16,649 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2022-11-16 12:32:16,649 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2022-11-16 12:32:16,650 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2022-11-16 12:32:16,650 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 16 remaining) [2022-11-16 12:32:16,650 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 16 remaining) [2022-11-16 12:32:16,650 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 16 remaining) [2022-11-16 12:32:16,651 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 16 remaining) [2022-11-16 12:32:16,651 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2022-11-16 12:32:16,651 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2022-11-16 12:32:16,651 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2022-11-16 12:32:16,652 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2022-11-16 12:32:16,652 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2022-11-16 12:32:16,652 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2022-11-16 12:32:16,652 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2022-11-16 12:32:16,653 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2022-11-16 12:32:16,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:32:16,653 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-16 12:32:16,660 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-16 12:32:16,660 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 12:32:16,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:32:16 BasicIcfg [2022-11-16 12:32:16,666 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 12:32:16,667 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 12:32:16,667 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 12:32:16,667 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 12:32:16,668 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:32:12" (3/4) ... [2022-11-16 12:32:16,671 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 12:32:16,676 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure reader [2022-11-16 12:32:16,677 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure writer [2022-11-16 12:32:16,681 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2022-11-16 12:32:16,682 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-16 12:32:16,682 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-16 12:32:16,682 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 12:32:16,717 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a661064-a9de-4450-8366-86af2a20636a/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 12:32:16,717 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 12:32:16,718 INFO L158 Benchmark]: Toolchain (without parser) took 5857.10ms. Allocated memory was 107.0MB in the beginning and 186.6MB in the end (delta: 79.7MB). Free memory was 63.0MB in the beginning and 60.6MB in the end (delta: 2.4MB). Peak memory consumption was 81.8MB. Max. memory is 16.1GB. [2022-11-16 12:32:16,718 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 107.0MB. Free memory is still 81.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:32:16,719 INFO L158 Benchmark]: CACSL2BoogieTranslator took 829.58ms. Allocated memory is still 107.0MB. Free memory was 62.8MB in the beginning and 72.8MB in the end (delta: -10.0MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB. [2022-11-16 12:32:16,723 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.29ms. Allocated memory is still 107.0MB. Free memory was 72.8MB in the beginning and 70.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:32:16,724 INFO L158 Benchmark]: Boogie Preprocessor took 40.16ms. Allocated memory is still 107.0MB. Free memory was 70.7MB in the beginning and 68.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:32:16,724 INFO L158 Benchmark]: RCFGBuilder took 732.73ms. Allocated memory is still 107.0MB. Free memory was 68.9MB in the beginning and 51.1MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-16 12:32:16,724 INFO L158 Benchmark]: TraceAbstraction took 4102.20ms. Allocated memory was 107.0MB in the beginning and 186.6MB in the end (delta: 79.7MB). Free memory was 50.4MB in the beginning and 62.7MB in the end (delta: -12.2MB). Peak memory consumption was 70.6MB. Max. memory is 16.1GB. [2022-11-16 12:32:16,725 INFO L158 Benchmark]: Witness Printer took 50.71ms. Allocated memory is still 186.6MB. Free memory was 62.7MB in the beginning and 60.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:32:16,729 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 107.0MB. Free memory is still 81.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 829.58ms. Allocated memory is still 107.0MB. Free memory was 62.8MB in the beginning and 72.8MB in the end (delta: -10.0MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 81.29ms. Allocated memory is still 107.0MB. Free memory was 72.8MB in the beginning and 70.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.16ms. Allocated memory is still 107.0MB. Free memory was 70.7MB in the beginning and 68.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 732.73ms. Allocated memory is still 107.0MB. Free memory was 68.9MB in the beginning and 51.1MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 4102.20ms. Allocated memory was 107.0MB in the beginning and 186.6MB in the end (delta: 79.7MB). Free memory was 50.4MB in the beginning and 62.7MB in the end (delta: -12.2MB). Peak memory consumption was 70.6MB. Max. memory is 16.1GB. * Witness Printer took 50.71ms. Allocated memory is still 186.6MB. Free memory was 62.7MB in the beginning and 60.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 711]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 711]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 714]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 714]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 145 locations, 16 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.9s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 85 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 85 mSDsluCounter, 6 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 59 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 243 IncrementalHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 59 mSolverCounterUnsat, 6 mSDtfsCounter, 243 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=338occurred in iteration=3, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 279 NumberOfCodeBlocks, 279 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 273 ConstructedInterpolants, 0 QuantifiedInterpolants, 567 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-16 12:32:16,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a661064-a9de-4450-8366-86af2a20636a/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE