./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-poker-hand-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5e519f3a 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_400730f6-216c-4631-8028-bb0fa6418436/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_400730f6-216c-4631-8028-bb0fa6418436/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_400730f6-216c-4631-8028-bb0fa6418436/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_400730f6-216c-4631-8028-bb0fa6418436/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/chl-poker-hand-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_400730f6-216c-4631-8028-bb0fa6418436/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_400730f6-216c-4631-8028-bb0fa6418436/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 088f6c2624c9ef470b1e5d5938ff0e2c2948b61c2ac98da6e426747245a7aaad --- 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 01:50:14,313 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:50:14,316 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:50:14,355 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:50:14,356 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:50:14,357 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:50:14,359 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:50:14,362 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:50:14,364 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:50:14,365 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:50:14,367 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:50:14,368 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:50:14,369 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:50:14,371 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:50:14,372 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:50:14,374 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:50:14,375 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:50:14,376 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:50:14,385 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:50:14,391 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:50:14,398 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:50:14,401 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:50:14,402 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:50:14,404 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:50:14,413 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:50:14,413 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:50:14,422 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:50:14,423 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:50:14,424 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:50:14,425 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:50:14,425 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:50:14,426 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:50:14,427 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:50:14,428 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:50:14,430 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:50:14,430 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:50:14,433 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:50:14,434 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:50:14,434 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:50:14,435 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:50:14,437 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:50:14,439 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_400730f6-216c-4631-8028-bb0fa6418436/bin/utaipan-7li7fVZpFI/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-03 01:50:14,471 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:50:14,482 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:50:14,483 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:50:14,483 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:50:14,484 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:50:14,484 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:50:14,485 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:50:14,485 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:50:14,485 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:50:14,486 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:50:14,487 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:50:14,487 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:50:14,488 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:50:14,488 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:50:14,488 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:50:14,488 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:50:14,489 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:50:14,489 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:50:14,490 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:50:14,490 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 01:50:14,490 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-03 01:50:14,490 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:50:14,491 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 01:50:14,493 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:50:14,493 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:50:14,493 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:50:14,493 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:50:14,494 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-03 01:50:14,495 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 01:50:14,495 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:50:14,496 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:50:14,496 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:50:14,496 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:50:14,497 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:50:14,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:50:14,497 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:50:14,498 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:50:14,498 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:50:14,498 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:50:14,498 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:50:14,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:50:14,499 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:50:14,499 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:50:14,499 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_400730f6-216c-4631-8028-bb0fa6418436/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_400730f6-216c-4631-8028-bb0fa6418436/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 088f6c2624c9ef470b1e5d5938ff0e2c2948b61c2ac98da6e426747245a7aaad [2022-11-03 01:50:14,947 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:50:14,982 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:50:14,987 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:50:14,989 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:50:14,990 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:50:14,992 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_400730f6-216c-4631-8028-bb0fa6418436/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/weaver/chl-poker-hand-subst.wvr.c [2022-11-03 01:50:15,076 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_400730f6-216c-4631-8028-bb0fa6418436/bin/utaipan-7li7fVZpFI/data/fdee559d5/d34ad1dc1b4f49f0a031db1d10f1735e/FLAGc1e3bdb0a [2022-11-03 01:50:15,739 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:50:15,743 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_400730f6-216c-4631-8028-bb0fa6418436/sv-benchmarks/c/weaver/chl-poker-hand-subst.wvr.c [2022-11-03 01:50:15,768 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_400730f6-216c-4631-8028-bb0fa6418436/bin/utaipan-7li7fVZpFI/data/fdee559d5/d34ad1dc1b4f49f0a031db1d10f1735e/FLAGc1e3bdb0a [2022-11-03 01:50:15,993 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_400730f6-216c-4631-8028-bb0fa6418436/bin/utaipan-7li7fVZpFI/data/fdee559d5/d34ad1dc1b4f49f0a031db1d10f1735e [2022-11-03 01:50:15,997 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:50:15,998 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:50:16,004 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:50:16,005 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:50:16,021 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:50:16,022 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:50:15" (1/1) ... [2022-11-03 01:50:16,023 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b6d2d81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:16, skipping insertion in model container [2022-11-03 01:50:16,024 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:50:15" (1/1) ... [2022-11-03 01:50:16,032 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:50:16,095 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:50:16,475 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_400730f6-216c-4631-8028-bb0fa6418436/sv-benchmarks/c/weaver/chl-poker-hand-subst.wvr.c[19262,19275] [2022-11-03 01:50:16,484 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:50:16,500 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:50:16,678 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_400730f6-216c-4631-8028-bb0fa6418436/sv-benchmarks/c/weaver/chl-poker-hand-subst.wvr.c[19262,19275] [2022-11-03 01:50:16,682 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:50:16,699 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:50:16,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:16 WrapperNode [2022-11-03 01:50:16,699 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:50:16,701 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:50:16,701 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:50:16,701 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:50:16,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:16" (1/1) ... [2022-11-03 01:50:16,736 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:16" (1/1) ... [2022-11-03 01:50:16,843 INFO L138 Inliner]: procedures = 26, calls = 454, calls flagged for inlining = 100, calls inlined = 144, statements flattened = 2560 [2022-11-03 01:50:16,843 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:50:16,844 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:50:16,845 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:50:16,845 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:50:16,857 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:16" (1/1) ... [2022-11-03 01:50:16,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:16" (1/1) ... [2022-11-03 01:50:16,870 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:16" (1/1) ... [2022-11-03 01:50:16,871 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:16" (1/1) ... [2022-11-03 01:50:16,943 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:16" (1/1) ... [2022-11-03 01:50:16,992 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:16" (1/1) ... [2022-11-03 01:50:17,005 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:16" (1/1) ... [2022-11-03 01:50:17,023 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:16" (1/1) ... [2022-11-03 01:50:17,044 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:50:17,052 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:50:17,054 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:50:17,054 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:50:17,056 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:16" (1/1) ... [2022-11-03 01:50:17,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:50:17,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_400730f6-216c-4631-8028-bb0fa6418436/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:50:17,150 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_400730f6-216c-4631-8028-bb0fa6418436/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:50:17,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_400730f6-216c-4631-8028-bb0fa6418436/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:50:17,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:50:17,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 01:50:17,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 01:50:17,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 01:50:17,210 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-03 01:50:17,210 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-03 01:50:17,210 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-03 01:50:17,210 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-03 01:50:17,211 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-03 01:50:17,211 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-03 01:50:17,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:50:17,211 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-03 01:50:17,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-03 01:50:17,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 01:50:17,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:50:17,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:50:17,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 01:50:17,216 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 01:50:17,631 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:50:17,633 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:50:20,741 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:50:26,745 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:50:26,746 INFO L300 CfgBuilder]: Removed 18 assume(true) statements. [2022-11-03 01:50:26,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:50:26 BoogieIcfgContainer [2022-11-03 01:50:26,751 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:50:26,757 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:50:26,757 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:50:26,762 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:50:26,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:50:15" (1/3) ... [2022-11-03 01:50:26,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1130e51e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:50:26, skipping insertion in model container [2022-11-03 01:50:26,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:16" (2/3) ... [2022-11-03 01:50:26,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1130e51e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:50:26, skipping insertion in model container [2022-11-03 01:50:26,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:50:26" (3/3) ... [2022-11-03 01:50:26,766 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-poker-hand-subst.wvr.c [2022-11-03 01:50:26,782 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-03 01:50:26,794 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:50:26,794 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 102 error locations. [2022-11-03 01:50:26,795 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-03 01:50:28,320 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-03 01:50:28,377 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-03 01:50:28,399 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 796 places, 865 transitions, 1754 flow [2022-11-03 01:50:28,410 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 796 places, 865 transitions, 1754 flow [2022-11-03 01:50:28,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 796 places, 865 transitions, 1754 flow [2022-11-03 01:50:29,233 INFO L130 PetriNetUnfolder]: 79/862 cut-off events. [2022-11-03 01:50:29,233 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-03 01:50:29,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 875 conditions, 862 events. 79/862 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1498 event pairs, 0 based on Foata normal form. 0/681 useless extension candidates. Maximal degree in co-relation 762. Up to 7 conditions per place. [2022-11-03 01:50:29,268 INFO L118 LiptonReduction]: Number of co-enabled transitions 37230 [2022-11-03 01:55:36,581 INFO L133 LiptonReduction]: Checked pairs total: 47394 [2022-11-03 01:55:36,582 INFO L135 LiptonReduction]: Total number of compositions: 1068 [2022-11-03 01:55:36,590 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 149 places, 163 transitions, 350 flow [2022-11-03 01:55:38,108 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 57752 states, 38046 states have (on average 5.703122535877622) internal successors, (216981), 57751 states have internal predecessors, (216981), 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 01:55:38,130 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:55:38,135 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;@714b30f0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:55:38,136 INFO L358 AbstractCegarLoop]: Starting to check reachability of 183 error locations. [2022-11-03 01:55:38,213 INFO L276 IsEmpty]: Start isEmpty. Operand has 57752 states, 38046 states have (on average 5.703122535877622) internal successors, (216981), 57751 states have internal predecessors, (216981), 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 01:55:38,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-03 01:55:38,218 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:38,219 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-03 01:55:38,219 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 180 more)] === [2022-11-03 01:55:38,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:38,225 INFO L85 PathProgramCache]: Analyzing trace with hash 317608, now seen corresponding path program 1 times [2022-11-03 01:55:38,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:55:38,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819671623] [2022-11-03 01:55:38,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:38,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:55:38,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:38,673 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 01:55:38,673 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:55:38,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819671623] [2022-11-03 01:55:38,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819671623] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:55:38,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:55:38,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-03 01:55:38,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895096563] [2022-11-03 01:55:38,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:55:38,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:55:38,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:55:38,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:55:38,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:55:38,780 INFO L87 Difference]: Start difference. First operand has 57752 states, 38046 states have (on average 5.703122535877622) internal successors, (216981), 57751 states have internal predecessors, (216981), 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 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 01:55:40,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:40,206 INFO L93 Difference]: Finished difference Result 40779 states and 157475 transitions. [2022-11-03 01:55:40,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:55:40,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2022-11-03 01:55:40,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:41,084 INFO L225 Difference]: With dead ends: 40779 [2022-11-03 01:55:41,084 INFO L226 Difference]: Without dead ends: 40779 [2022-11-03 01:55:41,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 01:55:41,090 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 83 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:55:41,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 0 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 01:55:41,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40779 states. [2022-11-03 01:55:42,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40779 to 20414. [2022-11-03 01:55:42,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20414 states, 14559 states have (on average 5.4106738100144245) internal successors, (78774), 20413 states have internal predecessors, (78774), 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 01:55:42,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20414 states to 20414 states and 78774 transitions. [2022-11-03 01:55:42,772 INFO L78 Accepts]: Start accepts. Automaton has 20414 states and 78774 transitions. Word has length 2 [2022-11-03 01:55:42,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:42,773 INFO L495 AbstractCegarLoop]: Abstraction has 20414 states and 78774 transitions. [2022-11-03 01:55:42,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 01:55:42,773 INFO L276 IsEmpty]: Start isEmpty. Operand 20414 states and 78774 transitions. [2022-11-03 01:55:42,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-03 01:55:42,774 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:42,774 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-03 01:55:42,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 01:55:42,775 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 180 more)] === [2022-11-03 01:55:42,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:42,777 INFO L85 PathProgramCache]: Analyzing trace with hash 9860524, now seen corresponding path program 1 times [2022-11-03 01:55:42,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:55:42,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421376838] [2022-11-03 01:55:42,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:42,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:55:42,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:43,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:55:43,138 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:55:43,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421376838] [2022-11-03 01:55:43,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421376838] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:55:43,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:55:43,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 01:55:43,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319265435] [2022-11-03 01:55:43,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:55:43,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:55:43,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:55:43,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:55:43,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:55:43,142 INFO L87 Difference]: Start difference. First operand 20414 states and 78774 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 01:55:43,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:43,933 INFO L93 Difference]: Finished difference Result 20402 states and 78762 transitions. [2022-11-03 01:55:43,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:55:43,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2022-11-03 01:55:43,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:44,344 INFO L225 Difference]: With dead ends: 20402 [2022-11-03 01:55:44,344 INFO L226 Difference]: Without dead ends: 20402 [2022-11-03 01:55:44,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 01:55:44,347 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 95 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:55:44,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 0 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 01:55:44,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20402 states. [2022-11-03 01:55:45,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20402 to 20402. [2022-11-03 01:55:45,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20402 states, 14559 states have (on average 5.409849577580878) internal successors, (78762), 20401 states have internal predecessors, (78762), 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 01:55:45,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20402 states to 20402 states and 78762 transitions. [2022-11-03 01:55:45,199 INFO L78 Accepts]: Start accepts. Automaton has 20402 states and 78762 transitions. Word has length 3 [2022-11-03 01:55:45,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:45,200 INFO L495 AbstractCegarLoop]: Abstraction has 20402 states and 78762 transitions. [2022-11-03 01:55:45,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 01:55:45,200 INFO L276 IsEmpty]: Start isEmpty. Operand 20402 states and 78762 transitions. [2022-11-03 01:55:45,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-03 01:55:45,201 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:45,201 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-03 01:55:45,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 01:55:45,201 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 180 more)] === [2022-11-03 01:55:45,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:45,202 INFO L85 PathProgramCache]: Analyzing trace with hash 9860525, now seen corresponding path program 1 times [2022-11-03 01:55:45,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:55:45,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472136023] [2022-11-03 01:55:45,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:45,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:55:45,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:45,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:55:45,306 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:55:45,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472136023] [2022-11-03 01:55:45,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472136023] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:55:45,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080386708] [2022-11-03 01:55:45,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:45,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:55:45,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_400730f6-216c-4631-8028-bb0fa6418436/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:55:45,313 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_400730f6-216c-4631-8028-bb0fa6418436/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:55:45,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_400730f6-216c-4631-8028-bb0fa6418436/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 01:55:47,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:47,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:55:47,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:47,173 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:55:47,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:55:47,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:55:47,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080386708] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:55:47,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1886562358] [2022-11-03 01:55:47,198 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Construction of path programs is not yet supported for concurrent programs at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:243) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-03 01:55:47,201 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:55:47,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-11-03 01:55:47,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986424286] [2022-11-03 01:55:47,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:55:47,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:55:47,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:55:47,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:55:47,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:55:47,204 INFO L87 Difference]: Start difference. First operand 20402 states and 78762 transitions. Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 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 01:55:50,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:50,095 INFO L93 Difference]: Finished difference Result 101898 states and 393638 transitions. [2022-11-03 01:55:50,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:55:50,096 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 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 3 [2022-11-03 01:55:50,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:51,418 INFO L225 Difference]: With dead ends: 101898 [2022-11-03 01:55:51,418 INFO L226 Difference]: Without dead ends: 101898 [2022-11-03 01:55:51,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:55:51,420 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 581 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 581 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-03 01:55:51,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [581 Valid, 0 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-03 01:55:51,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101898 states. [2022-11-03 01:55:53,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101898 to 20438. [2022-11-03 01:55:53,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20438 states, 14595 states have (on average 5.401438848920863) internal successors, (78834), 20437 states have internal predecessors, (78834), 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 01:55:53,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20438 states to 20438 states and 78834 transitions. [2022-11-03 01:55:53,492 INFO L78 Accepts]: Start accepts. Automaton has 20438 states and 78834 transitions. Word has length 3 [2022-11-03 01:55:53,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:53,492 INFO L495 AbstractCegarLoop]: Abstraction has 20438 states and 78834 transitions. [2022-11-03 01:55:53,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 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 01:55:53,492 INFO L276 IsEmpty]: Start isEmpty. Operand 20438 states and 78834 transitions. [2022-11-03 01:55:53,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-03 01:55:53,493 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:53,493 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1] [2022-11-03 01:55:53,520 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_400730f6-216c-4631-8028-bb0fa6418436/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-03 01:55:53,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_400730f6-216c-4631-8028-bb0fa6418436/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:55:53,694 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 180 more)] === [2022-11-03 01:55:53,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:53,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1711667625, now seen corresponding path program 2 times [2022-11-03 01:55:53,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:55:53,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110027024] [2022-11-03 01:55:53,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:53,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:55:53,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:53,882 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:55:53,882 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:55:53,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110027024] [2022-11-03 01:55:53,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110027024] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:55:53,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566126367] [2022-11-03 01:55:53,883 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 01:55:53,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:55:53,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_400730f6-216c-4631-8028-bb0fa6418436/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:55:53,885 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_400730f6-216c-4631-8028-bb0fa6418436/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:55:53,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_400730f6-216c-4631-8028-bb0fa6418436/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 01:55:55,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-03 01:55:55,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 01:55:55,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 01:55:55,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:55,473 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 01:55:55,473 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:55:55,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566126367] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:55:55,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 01:55:55,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-11-03 01:55:55,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743356227] [2022-11-03 01:55:55,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:55:55,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:55:55,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:55:55,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:55:55,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:55:55,476 INFO L87 Difference]: Start difference. First operand 20438 states and 78834 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 01:55:55,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:55,952 INFO L93 Difference]: Finished difference Result 20429 states and 78825 transitions. [2022-11-03 01:55:55,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:55:55,955 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 01:55:55,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:56,386 INFO L225 Difference]: With dead ends: 20429 [2022-11-03 01:55:56,386 INFO L226 Difference]: Without dead ends: 20429 [2022-11-03 01:55:56,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:55:56,387 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 91 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:55:56,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 0 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:55:56,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20429 states. [2022-11-03 01:55:56,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20429 to 20393. [2022-11-03 01:55:56,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20393 states, 14559 states have (on average 5.409231403255718) internal successors, (78753), 20392 states have internal predecessors, (78753), 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 01:55:57,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20393 states to 20393 states and 78753 transitions. [2022-11-03 01:55:57,273 INFO L78 Accepts]: Start accepts. Automaton has 20393 states and 78753 transitions. Word has length 6 [2022-11-03 01:55:57,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:57,273 INFO L495 AbstractCegarLoop]: Abstraction has 20393 states and 78753 transitions. [2022-11-03 01:55:57,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 01:55:57,274 INFO L276 IsEmpty]: Start isEmpty. Operand 20393 states and 78753 transitions. [2022-11-03 01:55:57,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-03 01:55:57,274 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:57,274 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1] [2022-11-03 01:55:57,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_400730f6-216c-4631-8028-bb0fa6418436/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 01:55:57,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_400730f6-216c-4631-8028-bb0fa6418436/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:55:57,490 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 180 more)] === [2022-11-03 01:55:57,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:57,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1279147342, now seen corresponding path program 1 times [2022-11-03 01:55:57,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:55:57,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660489685] [2022-11-03 01:55:57,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:57,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:55:57,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:57,608 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 01:55:57,608 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:55:57,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660489685] [2022-11-03 01:55:57,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660489685] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:55:57,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:55:57,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:55:57,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657480063] [2022-11-03 01:55:57,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:55:57,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:55:57,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:55:57,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:55:57,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:55:57,611 INFO L87 Difference]: Start difference. First operand 20393 states and 78753 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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 01:55:58,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:58,148 INFO L93 Difference]: Finished difference Result 20396 states and 78756 transitions. [2022-11-03 01:55:58,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:55:58,148 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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 9 [2022-11-03 01:55:58,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:58,228 INFO L225 Difference]: With dead ends: 20396 [2022-11-03 01:55:58,228 INFO L226 Difference]: Without dead ends: 20396 [2022-11-03 01:55:58,228 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 01:55:58,229 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:55:58,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 01:55:58,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20396 states. [2022-11-03 01:55:58,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20396 to 20396. [2022-11-03 01:55:58,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20396 states, 14562 states have (on average 5.408323032550474) internal successors, (78756), 20395 states have internal predecessors, (78756), 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 01:55:58,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20396 states to 20396 states and 78756 transitions. [2022-11-03 01:55:58,942 INFO L78 Accepts]: Start accepts. Automaton has 20396 states and 78756 transitions. Word has length 9 [2022-11-03 01:55:58,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:58,942 INFO L495 AbstractCegarLoop]: Abstraction has 20396 states and 78756 transitions. [2022-11-03 01:55:58,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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 01:55:58,943 INFO L276 IsEmpty]: Start isEmpty. Operand 20396 states and 78756 transitions. [2022-11-03 01:55:58,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-03 01:55:58,943 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:58,943 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:55:58,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 01:55:58,944 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 180 more)] === [2022-11-03 01:55:58,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:58,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1125687401, now seen corresponding path program 1 times [2022-11-03 01:55:58,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:55:58,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661535617] [2022-11-03 01:55:58,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:58,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:55:58,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:59,084 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 01:55:59,085 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:55:59,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661535617] [2022-11-03 01:55:59,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661535617] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:55:59,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818761843] [2022-11-03 01:55:59,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:59,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:55:59,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_400730f6-216c-4631-8028-bb0fa6418436/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:55:59,086 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_400730f6-216c-4631-8028-bb0fa6418436/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:55:59,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_400730f6-216c-4631-8028-bb0fa6418436/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 01:56:00,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:00,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 01:56:00,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:56:00,927 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 01:56:00,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:56:00,954 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 01:56:00,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818761843] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:56:00,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1824379265] [2022-11-03 01:56:00,956 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Construction of path programs is not yet supported for concurrent programs at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:243) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-03 01:56:00,957 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:56:00,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2022-11-03 01:56:00,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157877285] [2022-11-03 01:56:00,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:56:00,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:56:00,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:56:00,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:56:00,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:56:00,961 INFO L87 Difference]: Start difference. First operand 20396 states and 78756 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 01:56:01,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:56:01,756 INFO L93 Difference]: Finished difference Result 20417 states and 78765 transitions. [2022-11-03 01:56:01,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 01:56:01,757 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 01:56:01,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:56:01,883 INFO L225 Difference]: With dead ends: 20417 [2022-11-03 01:56:01,883 INFO L226 Difference]: Without dead ends: 20417 [2022-11-03 01:56:01,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:56:01,884 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:56:01,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 01:56:01,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20417 states. [2022-11-03 01:56:02,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20417 to 20417. [2022-11-03 01:56:02,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20417 states, 14583 states have (on average 5.4011520263320305) internal successors, (78765), 20416 states have internal predecessors, (78765), 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 01:56:02,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20417 states to 20417 states and 78765 transitions. [2022-11-03 01:56:02,824 INFO L78 Accepts]: Start accepts. Automaton has 20417 states and 78765 transitions. Word has length 12 [2022-11-03 01:56:02,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:56:02,825 INFO L495 AbstractCegarLoop]: Abstraction has 20417 states and 78765 transitions. [2022-11-03 01:56:02,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 01:56:02,825 INFO L276 IsEmpty]: Start isEmpty. Operand 20417 states and 78765 transitions. [2022-11-03 01:56:02,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-03 01:56:02,826 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:56:02,826 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1] [2022-11-03 01:56:02,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_400730f6-216c-4631-8028-bb0fa6418436/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 01:56:03,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_400730f6-216c-4631-8028-bb0fa6418436/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:56:03,027 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 180 more)] === [2022-11-03 01:56:03,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:56:03,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1506740978, now seen corresponding path program 2 times [2022-11-03 01:56:03,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:56:03,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877603056] [2022-11-03 01:56:03,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:03,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:56:03,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:03,261 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-03 01:56:03,261 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:56:03,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877603056] [2022-11-03 01:56:03,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877603056] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:56:03,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041936362] [2022-11-03 01:56:03,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 01:56:03,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:56:03,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_400730f6-216c-4631-8028-bb0fa6418436/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:56:03,263 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_400730f6-216c-4631-8028-bb0fa6418436/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:56:03,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_400730f6-216c-4631-8028-bb0fa6418436/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 01:56:04,902 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-03 01:56:04,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 01:56:04,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 01:56:04,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:56:04,925 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-03 01:56:04,925 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:56:04,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041936362] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:56:04,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 01:56:04,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-11-03 01:56:04,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809638144] [2022-11-03 01:56:04,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:56:04,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:56:04,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:56:04,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:56:04,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:56:04,928 INFO L87 Difference]: Start difference. First operand 20417 states and 78765 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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 01:56:05,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:56:05,336 INFO L93 Difference]: Finished difference Result 20414 states and 78762 transitions. [2022-11-03 01:56:05,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:56:05,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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 21 [2022-11-03 01:56:05,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:56:05,420 INFO L225 Difference]: With dead ends: 20414 [2022-11-03 01:56:05,420 INFO L226 Difference]: Without dead ends: 20414 [2022-11-03 01:56:05,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:56:05,421 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 94 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:56:05,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 0 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:56:05,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20414 states. [2022-11-03 01:56:06,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20414 to 20414. [2022-11-03 01:56:06,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20414 states, 14583 states have (on average 5.400946307344168) internal successors, (78762), 20413 states have internal predecessors, (78762), 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 01:56:06,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20414 states to 20414 states and 78762 transitions. [2022-11-03 01:56:06,127 INFO L78 Accepts]: Start accepts. Automaton has 20414 states and 78762 transitions. Word has length 21 [2022-11-03 01:56:06,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:56:06,127 INFO L495 AbstractCegarLoop]: Abstraction has 20414 states and 78762 transitions. [2022-11-03 01:56:06,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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 01:56:06,128 INFO L276 IsEmpty]: Start isEmpty. Operand 20414 states and 78762 transitions. [2022-11-03 01:56:06,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-03 01:56:06,129 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:56:06,129 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:56:06,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_400730f6-216c-4631-8028-bb0fa6418436/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 01:56:06,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_400730f6-216c-4631-8028-bb0fa6418436/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-03 01:56:06,334 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err25ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 180 more)] === [2022-11-03 01:56:06,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:56:06,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1729335810, now seen corresponding path program 1 times [2022-11-03 01:56:06,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:56:06,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577921376] [2022-11-03 01:56:06,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:06,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:56:06,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:07,011 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-11-03 01:56:07,011 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:56:07,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577921376] [2022-11-03 01:56:07,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577921376] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:56:07,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453099142] [2022-11-03 01:56:07,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:07,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:56:07,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_400730f6-216c-4631-8028-bb0fa6418436/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:56:07,013 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_400730f6-216c-4631-8028-bb0fa6418436/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:56:07,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_400730f6-216c-4631-8028-bb0fa6418436/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 01:56:08,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:08,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 930 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 01:56:08,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:56:08,765 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-11-03 01:56:08,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:56:08,840 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-11-03 01:56:08,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453099142] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:56:08,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1760678289] [2022-11-03 01:56:08,842 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-03 01:56:08,843 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:56:08,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 15 [2022-11-03 01:56:08,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469490474] [2022-11-03 01:56:08,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:56:08,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-03 01:56:08,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:56:08,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-03 01:56:08,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-03 01:56:08,845 INFO L87 Difference]: Start difference. First operand 20414 states and 78762 transitions. Second operand has 15 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 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 01:56:09,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:56:09,522 INFO L93 Difference]: Finished difference Result 20432 states and 78780 transitions. [2022-11-03 01:56:09,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 01:56:09,522 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 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 51 [2022-11-03 01:56:09,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:56:09,608 INFO L225 Difference]: With dead ends: 20432 [2022-11-03 01:56:09,609 INFO L226 Difference]: Without dead ends: 20432 [2022-11-03 01:56:09,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-03 01:56:09,610 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:56:09,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 01:56:09,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20432 states. [2022-11-03 01:56:10,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20432 to 20432. [2022-11-03 01:56:10,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20432 states, 14601 states have (on average 5.395520854735977) internal successors, (78780), 20431 states have internal predecessors, (78780), 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 01:56:10,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20432 states to 20432 states and 78780 transitions. [2022-11-03 01:56:10,348 INFO L78 Accepts]: Start accepts. Automaton has 20432 states and 78780 transitions. Word has length 51 [2022-11-03 01:56:10,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:56:10,348 INFO L495 AbstractCegarLoop]: Abstraction has 20432 states and 78780 transitions. [2022-11-03 01:56:10,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 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 01:56:10,348 INFO L276 IsEmpty]: Start isEmpty. Operand 20432 states and 78780 transitions. [2022-11-03 01:56:10,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-03 01:56:10,350 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:56:10,350 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:56:10,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_400730f6-216c-4631-8028-bb0fa6418436/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 01:56:10,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_400730f6-216c-4631-8028-bb0fa6418436/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:56:10,553 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err25ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 180 more)] === [2022-11-03 01:56:10,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:56:10,554 INFO L85 PathProgramCache]: Analyzing trace with hash 870060756, now seen corresponding path program 2 times [2022-11-03 01:56:10,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:56:10,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251204122] [2022-11-03 01:56:10,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:10,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:56:10,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:11,398 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-11-03 01:56:11,398 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:56:11,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251204122] [2022-11-03 01:56:11,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251204122] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:56:11,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376282567] [2022-11-03 01:56:11,399 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 01:56:11,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:56:11,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_400730f6-216c-4631-8028-bb0fa6418436/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:56:11,400 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_400730f6-216c-4631-8028-bb0fa6418436/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:56:11,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_400730f6-216c-4631-8028-bb0fa6418436/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 01:56:14,031 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-03 01:56:14,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 01:56:14,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 1062 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-03 01:56:14,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:56:14,361 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 01:56:14,420 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:56:14,498 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 01:56:14,499 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 01:56:14,543 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-11-03 01:56:14,572 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-11-03 01:56:14,597 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-11-03 01:56:14,623 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-11-03 01:56:14,676 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-03 01:56:14,676 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-03 01:56:14,721 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-11-03 01:56:14,746 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-11-03 01:56:14,766 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-11-03 01:56:14,787 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-11-03 01:56:14,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:14,834 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-11-03 01:56:14,877 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-11-03 01:56:14,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:56:47,333 WARN L234 SmtUtils]: Spent 31.94s on a formula simplification. DAG size of input: 100 DAG size of output: 91 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:56:47,554 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse2 (+ c_~last_index_of_3~0.offset 12))) (and (forall ((v_ArrVal_853 (Array Int Int)) (~last_index_of_7~0.offset Int) (~last_index_of_7~0.base Int)) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_853))) (let ((.cse1 (select (select .cse0 ~last_index_of_7~0.base) (+ ~last_index_of_7~0.offset 12)))) (or (forall ((~count_occurrences_of_2~0.base Int) (~count_occurrences_of_2~0.offset Int)) (not (= (select (select .cse0 ~count_occurrences_of_2~0.base) (+ 12 ~count_occurrences_of_2~0.offset)) 1))) (not (<= 0 .cse1)) (<= .cse1 (+ (select (select .cse0 c_~last_index_of_3~0.base) .cse2) 2147483648)) (not (<= .cse1 0)) (forall ((~index_of_0~0.base Int) (~index_of_0~0.offset Int)) (let ((.cse3 (select .cse0 ~index_of_0~0.base))) (or (= (+ 1 (select .cse3 (+ ~index_of_0~0.offset 8))) 0) (not (= 0 (+ (select .cse3 (+ ~index_of_0~0.offset 16)) 1)))))))))) (forall ((v_ArrVal_853 (Array Int Int)) (~last_index_of_7~0.offset Int) (~last_index_of_7~0.base Int)) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_853))) (let ((.cse5 (select (select .cse4 ~last_index_of_7~0.base) (+ ~last_index_of_7~0.offset 12)))) (or (forall ((~count_occurrences_of_6~0.base Int) (~count_occurrences_of_6~0.offset Int)) (not (= (select (select .cse4 ~count_occurrences_of_6~0.base) (+ ~count_occurrences_of_6~0.offset 12)) 1))) (<= 0 .cse5) (forall ((~index_of_4~0.offset Int) (~index_of_4~0.base Int)) (let ((.cse6 (select .cse4 ~index_of_4~0.base))) (or (= (+ (select .cse6 (+ 8 ~index_of_4~0.offset)) 1) 0) (not (= (+ (select .cse6 (+ 16 ~index_of_4~0.offset)) 1) 0))))) (<= .cse5 (+ (select (select .cse4 c_~last_index_of_3~0.base) .cse2) 2147483648)) (not (<= 0 (+ 4294967295 .cse5))))))) (forall ((v_ArrVal_853 (Array Int Int)) (~last_index_of_7~0.offset Int) (~last_index_of_7~0.base Int)) (let ((.cse8 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_853))) (let ((.cse7 (select (select .cse8 ~last_index_of_7~0.base) (+ ~last_index_of_7~0.offset 12)))) (or (not (<= 0 .cse7)) (<= .cse7 (+ (select (select .cse8 c_~last_index_of_3~0.base) .cse2) 2147483648)) (not (<= .cse7 0)) (forall ((~count_occurrences_of_2~0.base Int) (~count_occurrences_of_2~0.offset Int)) (<= (select (select .cse8 ~count_occurrences_of_2~0.base) (+ 12 ~count_occurrences_of_2~0.offset)) 1)) (forall ((~index_of_0~0.base Int) (~index_of_0~0.offset Int)) (not (= 0 (+ (select (select .cse8 ~index_of_0~0.base) (+ ~index_of_0~0.offset 16)) 1)))))))) (forall ((v_ArrVal_853 (Array Int Int)) (~last_index_of_7~0.offset Int) (~last_index_of_7~0.base Int)) (let ((.cse10 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_853))) (let ((.cse9 (select (select .cse10 ~last_index_of_7~0.base) (+ ~last_index_of_7~0.offset 12)))) (or (<= 0 .cse9) (<= .cse9 (+ (select (select .cse10 c_~last_index_of_3~0.base) .cse2) 2147483648)) (forall ((~index_of_4~0.offset Int) (~index_of_4~0.base Int)) (not (= (+ (select (select .cse10 ~index_of_4~0.base) (+ 16 ~index_of_4~0.offset)) 1) 0))) (not (<= 0 (+ 4294967295 .cse9))) (forall ((~count_occurrences_of_6~0.base Int) (~count_occurrences_of_6~0.offset Int)) (not (< 1 (select (select .cse10 ~count_occurrences_of_6~0.base) (+ ~count_occurrences_of_6~0.offset 12))))))))))) is different from false [2022-11-03 01:56:47,716 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse3 (+ c_~last_index_of_3~0.offset 12))) (and (forall ((v_ArrVal_853 (Array Int Int)) (~last_index_of_7~0.offset Int) (~last_index_of_7~0.base Int) (v_ArrVal_852 (Array Int Int))) (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_852) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_853))) (let ((.cse2 (select (select .cse1 ~last_index_of_7~0.base) (+ ~last_index_of_7~0.offset 12)))) (or (forall ((~index_of_4~0.offset Int) (~index_of_4~0.base Int)) (let ((.cse0 (select .cse1 ~index_of_4~0.base))) (or (= (+ (select .cse0 (+ 8 ~index_of_4~0.offset)) 1) 0) (not (= 0 (+ (select .cse0 (+ 16 ~index_of_4~0.offset)) 1)))))) (forall ((~count_occurrences_of_6~0.base Int) (~count_occurrences_of_6~0.offset Int)) (not (= (select (select .cse1 ~count_occurrences_of_6~0.base) (+ ~count_occurrences_of_6~0.offset 12)) 1))) (<= 0 .cse2) (<= .cse2 (+ 2147483648 (select (select .cse1 c_~last_index_of_3~0.base) .cse3))) (not (<= 0 (+ .cse2 4294967295))))))) (forall ((v_ArrVal_853 (Array Int Int)) (~last_index_of_7~0.offset Int) (~last_index_of_7~0.base Int) (v_ArrVal_852 (Array Int Int))) (let ((.cse4 (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_852) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_853))) (let ((.cse5 (select (select .cse4 ~last_index_of_7~0.base) (+ ~last_index_of_7~0.offset 12)))) (or (forall ((~count_occurrences_of_2~0.base Int) (~count_occurrences_of_2~0.offset Int)) (not (= (select (select .cse4 ~count_occurrences_of_2~0.base) (+ 12 ~count_occurrences_of_2~0.offset)) 1))) (not (<= 0 .cse5)) (forall ((~index_of_0~0.base Int) (~index_of_0~0.offset Int)) (let ((.cse6 (select .cse4 ~index_of_0~0.base))) (or (not (= (+ (select .cse6 (+ ~index_of_0~0.offset 16)) 1) 0)) (= (+ (select .cse6 (+ ~index_of_0~0.offset 8)) 1) 0)))) (<= .cse5 (+ 2147483648 (select (select .cse4 c_~last_index_of_3~0.base) .cse3))) (not (<= .cse5 0)))))) (forall ((v_ArrVal_853 (Array Int Int)) (~last_index_of_7~0.offset Int) (~last_index_of_7~0.base Int) (v_ArrVal_852 (Array Int Int))) (let ((.cse7 (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_852) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_853))) (let ((.cse8 (select (select .cse7 ~last_index_of_7~0.base) (+ ~last_index_of_7~0.offset 12)))) (or (forall ((~index_of_4~0.offset Int) (~index_of_4~0.base Int)) (not (= 0 (+ (select (select .cse7 ~index_of_4~0.base) (+ 16 ~index_of_4~0.offset)) 1)))) (<= 0 .cse8) (<= .cse8 (+ 2147483648 (select (select .cse7 c_~last_index_of_3~0.base) .cse3))) (not (<= 0 (+ .cse8 4294967295))) (forall ((~count_occurrences_of_6~0.base Int) (~count_occurrences_of_6~0.offset Int)) (not (< 1 (select (select .cse7 ~count_occurrences_of_6~0.base) (+ ~count_occurrences_of_6~0.offset 12))))))))) (forall ((v_ArrVal_853 (Array Int Int)) (~last_index_of_7~0.offset Int) (~last_index_of_7~0.base Int) (v_ArrVal_852 (Array Int Int))) (let ((.cse9 (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_852) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_853))) (let ((.cse10 (select (select .cse9 ~last_index_of_7~0.base) (+ ~last_index_of_7~0.offset 12)))) (or (forall ((~count_occurrences_of_2~0.base Int) (~count_occurrences_of_2~0.offset Int)) (<= (select (select .cse9 ~count_occurrences_of_2~0.base) (+ 12 ~count_occurrences_of_2~0.offset)) 1)) (not (<= 0 .cse10)) (<= .cse10 (+ 2147483648 (select (select .cse9 c_~last_index_of_3~0.base) .cse3))) (forall ((~index_of_0~0.base Int) (~index_of_0~0.offset Int)) (not (= (+ (select (select .cse9 ~index_of_0~0.base) (+ ~index_of_0~0.offset 16)) 1) 0))) (not (<= .cse10 0)))))))) is different from false [2022-11-03 01:56:51,171 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:56:51,172 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 870 treesize of output 571 [2022-11-03 01:56:56,678 WARN L234 SmtUtils]: Spent 5.36s on a formula simplification that was a NOOP. DAG size: 628 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-03 01:56:56,679 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:56:56,682 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 121886 treesize of output 115855 [2022-11-03 01:56:58,644 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:56:58,647 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 114348 treesize of output 97505 [2022-11-03 01:57:00,552 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:57:00,554 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 97420 treesize of output 93273 [2022-11-03 01:57:02,390 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:57:02,393 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 93188 treesize of output 84809 [2022-11-03 01:57:04,086 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:57:04,089 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 84724 treesize of output 84187 [2022-11-03 01:57:05,799 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:57:05,803 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 84132 treesize of output 82843 [2022-11-03 01:57:07,580 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:57:07,582 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 82788 treesize of output 82171 [2022-11-03 01:57:09,513 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:57:09,515 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 82116 treesize of output 81835 [2022-11-03 01:57:11,398 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:57:11,401 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 81780 treesize of output 81687 [2022-11-03 01:57:13,376 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:57:13,379 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 81632 treesize of output 81391 [2022-11-03 01:57:15,514 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:57:15,518 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 81336 treesize of output 80221 [2022-11-03 01:57:17,802 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:57:17,804 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 80136 treesize of output 79921 [2022-11-03 01:57:20,125 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:57:20,127 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 79836 treesize of output 79321