./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/sync01.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6c424b-3051-4dcc-bd8c-f5afc5dcb914/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6c424b-3051-4dcc-bd8c-f5afc5dcb914/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6c424b-3051-4dcc-bd8c-f5afc5dcb914/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6c424b-3051-4dcc-bd8c-f5afc5dcb914/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/sync01.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6c424b-3051-4dcc-bd8c-f5afc5dcb914/bin/utaipan-7li7fVZpFI/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6c424b-3051-4dcc-bd8c-f5afc5dcb914/bin/utaipan-7li7fVZpFI --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8f929a317f167560539ae4b4d441a695b43dc484839e0d977f902275d758b932 --- 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-5e519f3 [2022-11-03 03:57:46,411 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:57:46,415 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:57:46,465 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:57:46,467 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:57:46,469 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:57:46,472 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:57:46,478 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:57:46,480 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:57:46,483 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:57:46,485 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:57:46,486 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:57:46,488 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:57:46,491 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:57:46,492 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:57:46,494 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:57:46,496 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:57:46,504 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:57:46,506 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:57:46,508 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:57:46,512 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:57:46,514 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:57:46,515 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:57:46,516 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:57:46,519 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:57:46,520 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:57:46,520 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:57:46,521 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:57:46,521 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:57:46,522 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:57:46,523 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:57:46,523 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:57:46,524 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:57:46,525 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:57:46,526 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:57:46,527 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:57:46,527 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:57:46,528 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:57:46,528 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:57:46,529 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:57:46,530 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:57:46,531 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6c424b-3051-4dcc-bd8c-f5afc5dcb914/bin/utaipan-7li7fVZpFI/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-03 03:57:46,554 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:57:46,554 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:57:46,555 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:57:46,555 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:57:46,555 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:57:46,556 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:57:46,556 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:57:46,556 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:57:46,556 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:57:46,557 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:57:46,557 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:57:46,557 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:57:46,557 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:57:46,558 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:57:46,558 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:57:46,558 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:57:46,558 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:57:46,558 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:57:46,559 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:57:46,559 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 03:57:46,560 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-03 03:57:46,560 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:57:46,560 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 03:57:46,560 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:57:46,561 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:57:46,561 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:57:46,561 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:57:46,561 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-03 03:57:46,562 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 03:57:46,562 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:57:46,562 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:57:46,562 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:57:46,562 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:57:46,563 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:57:46,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:57:46,563 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:57:46,563 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:57:46,564 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:57:46,564 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:57:46,564 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:57:46,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:57:46,565 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:57:46,565 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:57:46,565 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_fa6c424b-3051-4dcc-bd8c-f5afc5dcb914/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6c424b-3051-4dcc-bd8c-f5afc5dcb914/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f929a317f167560539ae4b4d441a695b43dc484839e0d977f902275d758b932 [2022-11-03 03:57:46,859 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:57:46,888 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:57:46,891 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:57:46,901 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:57:46,902 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:57:46,904 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6c424b-3051-4dcc-bd8c-f5afc5dcb914/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/pthread/sync01.i [2022-11-03 03:57:46,997 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6c424b-3051-4dcc-bd8c-f5afc5dcb914/bin/utaipan-7li7fVZpFI/data/44849ad21/30dd309c96864997a8ad300db09ed9ac/FLAG4be7bc36d [2022-11-03 03:57:47,577 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:57:47,578 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6c424b-3051-4dcc-bd8c-f5afc5dcb914/sv-benchmarks/c/pthread/sync01.i [2022-11-03 03:57:47,611 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6c424b-3051-4dcc-bd8c-f5afc5dcb914/bin/utaipan-7li7fVZpFI/data/44849ad21/30dd309c96864997a8ad300db09ed9ac/FLAG4be7bc36d [2022-11-03 03:57:47,808 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6c424b-3051-4dcc-bd8c-f5afc5dcb914/bin/utaipan-7li7fVZpFI/data/44849ad21/30dd309c96864997a8ad300db09ed9ac [2022-11-03 03:57:47,811 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:57:47,812 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:57:47,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:57:47,814 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:57:47,818 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:57:47,819 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:57:47" (1/1) ... [2022-11-03 03:57:47,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7387c605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:47, skipping insertion in model container [2022-11-03 03:57:47,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:57:47" (1/1) ... [2022-11-03 03:57:47,828 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:57:47,876 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:57:48,543 WARN L230 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_fa6c424b-3051-4dcc-bd8c-f5afc5dcb914/sv-benchmarks/c/pthread/sync01.i[42004,42017] [2022-11-03 03:57:48,544 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:57:48,560 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:57:48,618 WARN L230 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_fa6c424b-3051-4dcc-bd8c-f5afc5dcb914/sv-benchmarks/c/pthread/sync01.i[42004,42017] [2022-11-03 03:57:48,630 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:57:48,686 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:57:48,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:48 WrapperNode [2022-11-03 03:57:48,687 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:57:48,688 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:57:48,688 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:57:48,688 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:57:48,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:48" (1/1) ... [2022-11-03 03:57:48,726 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:48" (1/1) ... [2022-11-03 03:57:48,777 INFO L138 Inliner]: procedures = 268, calls = 46, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 73 [2022-11-03 03:57:48,777 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:57:48,779 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:57:48,779 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:57:48,779 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:57:48,791 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:48" (1/1) ... [2022-11-03 03:57:48,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:48" (1/1) ... [2022-11-03 03:57:48,806 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:48" (1/1) ... [2022-11-03 03:57:48,807 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:48" (1/1) ... [2022-11-03 03:57:48,812 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:48" (1/1) ... [2022-11-03 03:57:48,815 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:48" (1/1) ... [2022-11-03 03:57:48,831 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:48" (1/1) ... [2022-11-03 03:57:48,832 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:48" (1/1) ... [2022-11-03 03:57:48,835 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:57:48,836 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:57:48,836 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:57:48,836 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:57:48,845 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:48" (1/1) ... [2022-11-03 03:57:48,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:57:48,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6c424b-3051-4dcc-bd8c-f5afc5dcb914/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:57:48,886 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6c424b-3051-4dcc-bd8c-f5afc5dcb914/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:57:48,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6c424b-3051-4dcc-bd8c-f5afc5dcb914/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:57:48,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:57:48,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:57:48,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 03:57:48,934 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-03 03:57:48,934 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-03 03:57:48,934 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-03 03:57:48,935 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-03 03:57:48,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 03:57:48,935 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-03 03:57:48,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:57:48,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:57:48,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:57:48,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:57:48,938 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-03 03:57:49,152 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:57:49,155 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:57:49,376 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:57:49,383 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:57:49,384 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-03 03:57:49,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:57:49 BoogieIcfgContainer [2022-11-03 03:57:49,386 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:57:49,389 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:57:49,389 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:57:49,393 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:57:49,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:57:47" (1/3) ... [2022-11-03 03:57:49,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f078ee5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:57:49, skipping insertion in model container [2022-11-03 03:57:49,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:48" (2/3) ... [2022-11-03 03:57:49,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f078ee5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:57:49, skipping insertion in model container [2022-11-03 03:57:49,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:57:49" (3/3) ... [2022-11-03 03:57:49,396 INFO L112 eAbstractionObserver]: Analyzing ICFG sync01.i [2022-11-03 03:57:49,405 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-03 03:57:49,416 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:57:49,416 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-03 03:57:49,417 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-03 03:57:49,511 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-03 03:57:49,568 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-03 03:57:49,582 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 116 places, 114 transitions, 244 flow [2022-11-03 03:57:49,584 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 116 places, 114 transitions, 244 flow [2022-11-03 03:57:49,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 114 transitions, 244 flow [2022-11-03 03:57:49,709 INFO L130 PetriNetUnfolder]: 5/112 cut-off events. [2022-11-03 03:57:49,709 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-03 03:57:49,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 112 events. 5/112 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 96 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 74. Up to 2 conditions per place. [2022-11-03 03:57:49,715 INFO L118 LiptonReduction]: Number of co-enabled transitions 1292 [2022-11-03 03:57:55,667 INFO L133 LiptonReduction]: Checked pairs total: 3456 [2022-11-03 03:57:55,668 INFO L135 LiptonReduction]: Total number of compositions: 90 [2022-11-03 03:57:55,680 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 33 transitions, 82 flow [2022-11-03 03:57:55,748 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 230 states, 222 states have (on average 2.6936936936936937) internal successors, (598), 229 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:57:55,778 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:57:55,787 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=FINITE_AUTOMATA, 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;@36322649, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:57:55,787 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-03 03:57:55,794 INFO L276 IsEmpty]: Start isEmpty. Operand has 230 states, 222 states have (on average 2.6936936936936937) internal successors, (598), 229 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:57:55,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-03 03:57:55,801 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:57:55,802 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-03 03:57:55,802 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-03 03:57:55,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:57:55,815 INFO L85 PathProgramCache]: Analyzing trace with hash 390334866, now seen corresponding path program 1 times [2022-11-03 03:57:55,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:57:55,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651660067] [2022-11-03 03:57:55,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:57:55,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:57:55,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:57:56,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:57:56,043 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:57:56,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651660067] [2022-11-03 03:57:56,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651660067] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:57:56,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:57:56,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:57:56,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074470750] [2022-11-03 03:57:56,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:57:56,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 03:57:56,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:57:56,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 03:57:56,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 03:57:56,078 INFO L87 Difference]: Start difference. First operand has 230 states, 222 states have (on average 2.6936936936936937) internal successors, (598), 229 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:57:56,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:57:56,150 INFO L93 Difference]: Finished difference Result 230 states and 554 transitions. [2022-11-03 03:57:56,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 03:57:56,153 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-03 03:57:56,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:57:56,174 INFO L225 Difference]: With dead ends: 230 [2022-11-03 03:57:56,175 INFO L226 Difference]: Without dead ends: 230 [2022-11-03 03:57:56,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 03:57:56,181 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:57:56,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:57:56,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-03 03:57:56,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2022-11-03 03:57:56,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 222 states have (on average 2.4954954954954953) internal successors, (554), 229 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:57:56,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 554 transitions. [2022-11-03 03:57:56,269 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 554 transitions. Word has length 5 [2022-11-03 03:57:56,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:57:56,270 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 554 transitions. [2022-11-03 03:57:56,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:57:56,271 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 554 transitions. [2022-11-03 03:57:56,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-03 03:57:56,273 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:57:56,273 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-03 03:57:56,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:57:56,274 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-03 03:57:56,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:57:56,275 INFO L85 PathProgramCache]: Analyzing trace with hash -784589078, now seen corresponding path program 1 times [2022-11-03 03:57:56,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:57:56,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256289598] [2022-11-03 03:57:56,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:57:56,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:57:56,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:57:56,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:57:56,434 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:57:56,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256289598] [2022-11-03 03:57:56,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256289598] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:57:56,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:57:56,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:57:56,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522738555] [2022-11-03 03:57:56,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:57:56,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:57:56,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:57:56,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:57:56,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:57:56,439 INFO L87 Difference]: Start difference. First operand 230 states and 554 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:57:56,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:57:56,473 INFO L93 Difference]: Finished difference Result 90 states and 202 transitions. [2022-11-03 03:57:56,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:57:56,474 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-03 03:57:56,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:57:56,475 INFO L225 Difference]: With dead ends: 90 [2022-11-03 03:57:56,475 INFO L226 Difference]: Without dead ends: 90 [2022-11-03 03:57:56,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:57:56,477 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 11 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:57:56,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 7 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:57:56,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-11-03 03:57:56,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2022-11-03 03:57:56,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 88 states have (on average 2.2954545454545454) internal successors, (202), 89 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:57:56,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 202 transitions. [2022-11-03 03:57:56,485 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 202 transitions. Word has length 6 [2022-11-03 03:57:56,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:57:56,485 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 202 transitions. [2022-11-03 03:57:56,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:57:56,485 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 202 transitions. [2022-11-03 03:57:56,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-03 03:57:56,486 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:57:56,486 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:57:56,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:57:56,487 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-03 03:57:56,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:57:56,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1646614510, now seen corresponding path program 1 times [2022-11-03 03:57:56,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:57:56,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898336575] [2022-11-03 03:57:56,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:57:56,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:57:56,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:57:56,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:57:56,607 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:57:56,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898336575] [2022-11-03 03:57:56,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898336575] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:57:56,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:57:56,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:57:56,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297531419] [2022-11-03 03:57:56,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:57:56,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:57:56,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:57:56,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:57:56,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:57:56,611 INFO L87 Difference]: Start difference. First operand 90 states and 202 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:57:56,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:57:56,673 INFO L93 Difference]: Finished difference Result 74 states and 162 transitions. [2022-11-03 03:57:56,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:57:56,674 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-03 03:57:56,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:57:56,675 INFO L225 Difference]: With dead ends: 74 [2022-11-03 03:57:56,675 INFO L226 Difference]: Without dead ends: 74 [2022-11-03 03:57:56,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:57:56,677 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 20 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:57:56,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 11 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:57:56,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-11-03 03:57:56,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2022-11-03 03:57:56,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 72 states have (on average 2.25) internal successors, (162), 73 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:57:56,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 162 transitions. [2022-11-03 03:57:56,682 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 162 transitions. Word has length 8 [2022-11-03 03:57:56,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:57:56,683 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 162 transitions. [2022-11-03 03:57:56,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:57:56,683 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 162 transitions. [2022-11-03 03:57:56,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-03 03:57:56,684 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:57:56,684 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:57:56,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 03:57:56,685 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-03 03:57:56,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:57:56,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1676536318, now seen corresponding path program 1 times [2022-11-03 03:57:56,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:57:56,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375928715] [2022-11-03 03:57:56,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:57:56,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:57:56,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:57:56,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:57:56,988 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:57:56,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375928715] [2022-11-03 03:57:56,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375928715] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:57:56,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:57:56,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:57:56,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141569151] [2022-11-03 03:57:56,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:57:56,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:57:56,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:57:56,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:57:56,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:57:56,996 INFO L87 Difference]: Start difference. First operand 74 states and 162 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:57:57,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:57:57,110 INFO L93 Difference]: Finished difference Result 50 states and 82 transitions. [2022-11-03 03:57:57,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:57:57,111 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-03 03:57:57,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:57:57,112 INFO L225 Difference]: With dead ends: 50 [2022-11-03 03:57:57,112 INFO L226 Difference]: Without dead ends: 50 [2022-11-03 03:57:57,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:57:57,115 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 23 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:57:57,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 5 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:57:57,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-11-03 03:57:57,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2022-11-03 03:57:57,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 48 states have (on average 1.7083333333333333) internal successors, (82), 49 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:57:57,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 82 transitions. [2022-11-03 03:57:57,120 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 82 transitions. Word has length 12 [2022-11-03 03:57:57,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:57:57,120 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 82 transitions. [2022-11-03 03:57:57,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:57:57,121 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 82 transitions. [2022-11-03 03:57:57,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-03 03:57:57,121 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:57:57,122 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:57:57,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 03:57:57,122 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-03 03:57:57,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:57:57,123 INFO L85 PathProgramCache]: Analyzing trace with hash 432033476, now seen corresponding path program 1 times [2022-11-03 03:57:57,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:57:57,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434686094] [2022-11-03 03:57:57,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:57:57,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:57:57,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:57:57,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:57:57,231 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:57:57,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434686094] [2022-11-03 03:57:57,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434686094] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:57:57,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:57:57,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:57:57,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361812286] [2022-11-03 03:57:57,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:57:57,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:57:57,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:57:57,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:57:57,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:57:57,237 INFO L87 Difference]: Start difference. First operand 50 states and 82 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:57:57,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:57:57,295 INFO L93 Difference]: Finished difference Result 48 states and 79 transitions. [2022-11-03 03:57:57,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:57:57,295 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-03 03:57:57,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:57:57,296 INFO L225 Difference]: With dead ends: 48 [2022-11-03 03:57:57,296 INFO L226 Difference]: Without dead ends: 48 [2022-11-03 03:57:57,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:57:57,299 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 5 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:57:57,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 11 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:57:57,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-11-03 03:57:57,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2022-11-03 03:57:57,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.6808510638297873) internal successors, (79), 47 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:57:57,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 79 transitions. [2022-11-03 03:57:57,306 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 79 transitions. Word has length 13 [2022-11-03 03:57:57,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:57:57,307 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 79 transitions. [2022-11-03 03:57:57,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:57:57,307 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 79 transitions. [2022-11-03 03:57:57,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-03 03:57:57,309 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:57:57,309 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:57:57,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 03:57:57,310 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-03 03:57:57,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:57:57,311 INFO L85 PathProgramCache]: Analyzing trace with hash 432033538, now seen corresponding path program 1 times [2022-11-03 03:57:57,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:57:57,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915283692] [2022-11-03 03:57:57,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:57:57,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:57:57,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:57:57,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:57:57,420 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:57:57,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915283692] [2022-11-03 03:57:57,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915283692] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:57:57,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:57:57,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:57:57,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340172715] [2022-11-03 03:57:57,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:57:57,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:57:57,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:57:57,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:57:57,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:57:57,425 INFO L87 Difference]: Start difference. First operand 48 states and 79 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:57:57,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:57:57,502 INFO L93 Difference]: Finished difference Result 46 states and 76 transitions. [2022-11-03 03:57:57,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:57:57,503 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-03 03:57:57,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:57:57,503 INFO L225 Difference]: With dead ends: 46 [2022-11-03 03:57:57,504 INFO L226 Difference]: Without dead ends: 0 [2022-11-03 03:57:57,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-03 03:57:57,506 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 20 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:57:57,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 4 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:57:57,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-03 03:57:57,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-03 03:57:57,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:57:57,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-03 03:57:57,510 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2022-11-03 03:57:57,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:57:57,510 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-03 03:57:57,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:57:57,510 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-03 03:57:57,510 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-03 03:57:57,513 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 10 remaining) [2022-11-03 03:57:57,514 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-11-03 03:57:57,514 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-11-03 03:57:57,514 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-11-03 03:57:57,515 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 10 remaining) [2022-11-03 03:57:57,515 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 10 remaining) [2022-11-03 03:57:57,516 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-11-03 03:57:57,516 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-11-03 03:57:57,516 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-11-03 03:57:57,517 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 10 remaining) [2022-11-03 03:57:57,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 03:57:57,520 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-03 03:57:57,525 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-03 03:57:57,526 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 03:57:57,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 03:57:57 BasicIcfg [2022-11-03 03:57:57,529 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 03:57:57,530 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 03:57:57,530 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 03:57:57,530 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 03:57:57,531 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:57:49" (3/4) ... [2022-11-03 03:57:57,534 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-03 03:57:57,541 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-03 03:57:57,541 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-03 03:57:57,548 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-11-03 03:57:57,548 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-03 03:57:57,549 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-03 03:57:57,549 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-03 03:57:57,586 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6c424b-3051-4dcc-bd8c-f5afc5dcb914/bin/utaipan-7li7fVZpFI/witness.graphml [2022-11-03 03:57:57,586 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 03:57:57,587 INFO L158 Benchmark]: Toolchain (without parser) took 9774.81ms. Allocated memory was 121.6MB in the beginning and 186.6MB in the end (delta: 65.0MB). Free memory was 82.5MB in the beginning and 95.8MB in the end (delta: -13.3MB). Peak memory consumption was 49.7MB. Max. memory is 16.1GB. [2022-11-03 03:57:57,587 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 121.6MB. Free memory is still 101.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 03:57:57,587 INFO L158 Benchmark]: CACSL2BoogieTranslator took 873.20ms. Allocated memory is still 121.6MB. Free memory was 82.3MB in the beginning and 77.5MB in the end (delta: 4.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-03 03:57:57,588 INFO L158 Benchmark]: Boogie Procedure Inliner took 90.11ms. Allocated memory is still 121.6MB. Free memory was 77.5MB in the beginning and 75.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 03:57:57,588 INFO L158 Benchmark]: Boogie Preprocessor took 56.27ms. Allocated memory is still 121.6MB. Free memory was 75.1MB in the beginning and 73.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 03:57:57,589 INFO L158 Benchmark]: RCFGBuilder took 550.82ms. Allocated memory is still 121.6MB. Free memory was 73.5MB in the beginning and 58.4MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-03 03:57:57,589 INFO L158 Benchmark]: TraceAbstraction took 8140.62ms. Allocated memory was 121.6MB in the beginning and 186.6MB in the end (delta: 65.0MB). Free memory was 57.6MB in the beginning and 97.9MB in the end (delta: -40.3MB). Peak memory consumption was 26.8MB. Max. memory is 16.1GB. [2022-11-03 03:57:57,590 INFO L158 Benchmark]: Witness Printer took 56.27ms. Allocated memory is still 186.6MB. Free memory was 97.9MB in the beginning and 95.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 03:57:57,591 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 121.6MB. Free memory is still 101.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 873.20ms. Allocated memory is still 121.6MB. Free memory was 82.3MB in the beginning and 77.5MB in the end (delta: 4.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 90.11ms. Allocated memory is still 121.6MB. Free memory was 77.5MB in the beginning and 75.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.27ms. Allocated memory is still 121.6MB. Free memory was 75.1MB in the beginning and 73.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 550.82ms. Allocated memory is still 121.6MB. Free memory was 73.5MB in the beginning and 58.4MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 8140.62ms. Allocated memory was 121.6MB in the beginning and 186.6MB in the end (delta: 65.0MB). Free memory was 57.6MB in the beginning and 97.9MB in the end (delta: -40.3MB). Peak memory consumption was 26.8MB. Max. memory is 16.1GB. * Witness Printer took 56.27ms. Allocated memory is still 186.6MB. Free memory was 97.9MB in the beginning and 95.8MB 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: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.1s, 116 PlacesBefore, 36 PlacesAfterwards, 114 TransitionsBefore, 33 TransitionsAfterwards, 1292 CoEnabledTransitionPairs, 7 FixpointIterations, 57 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 90 TotalNumberOfCompositions, 3456 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2251, positive: 2113, positive conditional: 0, positive unconditional: 2113, negative: 138, negative conditional: 0, negative unconditional: 138, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 868, positive: 823, positive conditional: 0, positive unconditional: 823, negative: 45, negative conditional: 0, negative unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 868, positive: 815, positive conditional: 0, positive unconditional: 815, negative: 53, negative conditional: 0, negative unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 53, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 45, negative conditional: 0, negative unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 142, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 128, negative conditional: 0, negative unconditional: 128, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2251, positive: 1290, positive conditional: 0, positive unconditional: 1290, negative: 93, negative conditional: 0, negative unconditional: 93, unknown: 868, unknown conditional: 0, unknown unconditional: 868] , Statistics on independence cache: Total cache size (in pairs): 175, Positive cache size: 159, Positive conditional cache size: 0, Positive unconditional cache size: 159, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 938]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 938]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 948]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 948]: 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 5 procedures, 148 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 7.9s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 79 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 79 mSDsluCounter, 48 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 91 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 223 IncrementalHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 29 mSDtfsCounter, 223 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=230occurred in iteration=0, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 57 NumberOfCodeBlocks, 57 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 51 ConstructedInterpolants, 0 QuantifiedInterpolants, 134 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! [2022-11-03 03:57:57,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6c424b-3051-4dcc-bd8c-f5afc5dcb914/bin/utaipan-7li7fVZpFI/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