./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-difference-det.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-difference-det.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh --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 739dc04b5c5aa67083a96cc98ccb84e17de2a97ca235c28aa84e8c99a10b0a9e --- 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-2329fc7 [2022-12-14 10:45:46,794 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 10:45:46,796 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 10:45:46,808 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 10:45:46,808 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 10:45:46,809 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 10:45:46,810 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 10:45:46,811 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 10:45:46,812 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 10:45:46,813 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 10:45:46,814 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 10:45:46,814 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 10:45:46,815 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 10:45:46,815 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 10:45:46,816 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 10:45:46,817 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 10:45:46,818 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 10:45:46,818 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 10:45:46,819 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 10:45:46,821 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 10:45:46,821 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 10:45:46,822 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 10:45:46,823 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 10:45:46,824 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 10:45:46,826 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 10:45:46,826 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 10:45:46,827 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 10:45:46,827 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 10:45:46,828 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 10:45:46,828 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 10:45:46,828 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 10:45:46,829 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 10:45:46,830 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 10:45:46,830 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 10:45:46,831 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 10:45:46,831 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 10:45:46,832 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 10:45:46,832 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 10:45:46,832 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 10:45:46,832 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 10:45:46,833 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 10:45:46,833 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-12-14 10:45:46,848 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 10:45:46,848 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 10:45:46,849 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 10:45:46,849 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 10:45:46,849 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 10:45:46,849 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 10:45:46,850 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 10:45:46,850 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 10:45:46,850 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 10:45:46,850 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 10:45:46,850 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 10:45:46,850 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 10:45:46,850 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 10:45:46,850 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 10:45:46,850 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 10:45:46,851 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 10:45:46,851 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 10:45:46,851 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 10:45:46,851 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 10:45:46,851 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 10:45:46,852 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 10:45:46,852 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 10:45:46,852 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 10:45:46,852 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 10:45:46,852 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 10:45:46,852 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 10:45:46,852 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 10:45:46,852 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 10:45:46,852 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 10:45:46,853 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 10:45:46,853 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 10:45:46,853 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 10:45:46,853 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 10:45:46,853 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 10:45:46,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:45:46,853 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 10:45:46,853 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 10:45:46,854 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 10:45:46,854 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 10:45:46,854 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 10:45:46,854 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 10:45:46,854 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 10:45:46,854 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 10:45:46,854 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_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 739dc04b5c5aa67083a96cc98ccb84e17de2a97ca235c28aa84e8c99a10b0a9e [2022-12-14 10:45:47,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 10:45:47,028 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 10:45:47,031 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 10:45:47,032 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 10:45:47,033 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 10:45:47,033 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/weaver/popl20-difference-det.wvr.c [2022-12-14 10:45:49,707 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 10:45:49,831 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 10:45:49,831 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/sv-benchmarks/c/weaver/popl20-difference-det.wvr.c [2022-12-14 10:45:49,836 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/data/3fe9e716e/0a6d8ca7c84740ad8912b613b6410711/FLAG26bdb6909 [2022-12-14 10:45:50,252 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/data/3fe9e716e/0a6d8ca7c84740ad8912b613b6410711 [2022-12-14 10:45:50,255 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 10:45:50,256 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 10:45:50,257 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 10:45:50,257 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 10:45:50,259 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 10:45:50,260 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:45:50" (1/1) ... [2022-12-14 10:45:50,260 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ffb59d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:45:50, skipping insertion in model container [2022-12-14 10:45:50,261 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:45:50" (1/1) ... [2022-12-14 10:45:50,266 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 10:45:50,277 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:45:50,386 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:45:50,387 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:45:50,389 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:45:50,390 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:45:50,391 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:45:50,392 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:45:50,393 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:45:50,393 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:45:50,399 WARN L237 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_93be93a3-0436-40cd-b8ca-04c8f473863b/sv-benchmarks/c/weaver/popl20-difference-det.wvr.c[2507,2520] [2022-12-14 10:45:50,400 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:45:50,407 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 10:45:50,416 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:45:50,416 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:45:50,417 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:45:50,418 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:45:50,419 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:45:50,419 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:45:50,420 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:45:50,420 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:45:50,424 WARN L237 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_93be93a3-0436-40cd-b8ca-04c8f473863b/sv-benchmarks/c/weaver/popl20-difference-det.wvr.c[2507,2520] [2022-12-14 10:45:50,425 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:45:50,434 INFO L208 MainTranslator]: Completed translation [2022-12-14 10:45:50,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:45:50 WrapperNode [2022-12-14 10:45:50,435 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 10:45:50,436 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 10:45:50,436 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 10:45:50,436 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 10:45:50,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:45:50" (1/1) ... [2022-12-14 10:45:50,446 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:45:50" (1/1) ... [2022-12-14 10:45:50,462 INFO L138 Inliner]: procedures = 23, calls = 41, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 128 [2022-12-14 10:45:50,462 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 10:45:50,462 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 10:45:50,463 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 10:45:50,463 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 10:45:50,469 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:45:50" (1/1) ... [2022-12-14 10:45:50,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:45:50" (1/1) ... [2022-12-14 10:45:50,471 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:45:50" (1/1) ... [2022-12-14 10:45:50,471 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:45:50" (1/1) ... [2022-12-14 10:45:50,475 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:45:50" (1/1) ... [2022-12-14 10:45:50,478 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:45:50" (1/1) ... [2022-12-14 10:45:50,479 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:45:50" (1/1) ... [2022-12-14 10:45:50,480 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:45:50" (1/1) ... [2022-12-14 10:45:50,481 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 10:45:50,482 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 10:45:50,482 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 10:45:50,482 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 10:45:50,483 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:45:50" (1/1) ... [2022-12-14 10:45:50,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:45:50,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:45:50,506 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 10:45:50,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 10:45:50,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 10:45:50,544 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-14 10:45:50,544 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-14 10:45:50,544 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-14 10:45:50,544 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-14 10:45:50,544 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-14 10:45:50,545 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-14 10:45:50,545 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-14 10:45:50,545 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-14 10:45:50,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 10:45:50,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 10:45:50,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 10:45:50,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-14 10:45:50,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-14 10:45:50,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 10:45:50,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 10:45:50,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 10:45:50,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 10:45:50,548 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-14 10:45:50,644 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 10:45:50,646 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 10:45:50,878 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 10:45:50,940 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 10:45:50,940 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-14 10:45:50,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:45:50 BoogieIcfgContainer [2022-12-14 10:45:50,942 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 10:45:50,943 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 10:45:50,943 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 10:45:50,946 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 10:45:50,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 10:45:50" (1/3) ... [2022-12-14 10:45:50,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@621b45d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:45:50, skipping insertion in model container [2022-12-14 10:45:50,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:45:50" (2/3) ... [2022-12-14 10:45:50,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@621b45d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:45:50, skipping insertion in model container [2022-12-14 10:45:50,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:45:50" (3/3) ... [2022-12-14 10:45:50,948 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-difference-det.wvr.c [2022-12-14 10:45:50,954 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-14 10:45:50,962 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 10:45:50,962 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-12-14 10:45:50,962 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-14 10:45:51,028 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-14 10:45:51,060 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 10:45:51,074 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 155 places, 151 transitions, 334 flow [2022-12-14 10:45:51,077 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 155 places, 151 transitions, 334 flow [2022-12-14 10:45:51,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 155 places, 151 transitions, 334 flow [2022-12-14 10:45:51,135 INFO L130 PetriNetUnfolder]: 9/147 cut-off events. [2022-12-14 10:45:51,135 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-14 10:45:51,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164 conditions, 147 events. 9/147 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 192 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2022-12-14 10:45:51,144 INFO L119 LiptonReduction]: Number of co-enabled transitions 5184 [2022-12-14 10:45:54,688 INFO L134 LiptonReduction]: Checked pairs total: 6543 [2022-12-14 10:45:54,688 INFO L136 LiptonReduction]: Total number of compositions: 138 [2022-12-14 10:45:54,694 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 58 places, 49 transitions, 130 flow [2022-12-14 10:45:54,866 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 6392 states, 5768 states have (on average 4.805131761442441) internal successors, (27716), 6391 states have internal predecessors, (27716), 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) [2022-12-14 10:45:54,880 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 10:45:54,884 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;@1e90c3d5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 10:45:54,885 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2022-12-14 10:45:54,901 INFO L276 IsEmpty]: Start isEmpty. Operand has 6392 states, 5768 states have (on average 4.805131761442441) internal successors, (27716), 6391 states have internal predecessors, (27716), 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) [2022-12-14 10:45:54,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 10:45:54,904 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:45:54,905 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 10:45:54,905 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-12-14 10:45:54,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:45:54,909 INFO L85 PathProgramCache]: Analyzing trace with hash 20142610, now seen corresponding path program 1 times [2022-12-14 10:45:54,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:45:54,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809103629] [2022-12-14 10:45:54,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:45:54,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:45:54,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:45:55,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:45:55,083 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:45:55,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809103629] [2022-12-14 10:45:55,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809103629] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:45:55,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:45:55,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 10:45:55,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906541474] [2022-12-14 10:45:55,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:45:55,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:45:55,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:45:55,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:45:55,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:45:55,123 INFO L87 Difference]: Start difference. First operand has 6392 states, 5768 states have (on average 4.805131761442441) internal successors, (27716), 6391 states have internal predecessors, (27716), 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 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-12-14 10:45:55,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:45:55,335 INFO L93 Difference]: Finished difference Result 7808 states and 33616 transitions. [2022-12-14 10:45:55,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:45:55,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2022-12-14 10:45:55,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:45:55,406 INFO L225 Difference]: With dead ends: 7808 [2022-12-14 10:45:55,406 INFO L226 Difference]: Without dead ends: 7808 [2022-12-14 10:45:55,407 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 [2022-12-14 10:45:55,410 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 35 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:45:55,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 10 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:45:55,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7808 states. [2022-12-14 10:45:55,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7808 to 5410. [2022-12-14 10:45:55,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5410 states, 5011 states have (on average 5.033526242267013) internal successors, (25223), 5409 states have internal predecessors, (25223), 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) [2022-12-14 10:45:55,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5410 states to 5410 states and 25223 transitions. [2022-12-14 10:45:55,752 INFO L78 Accepts]: Start accepts. Automaton has 5410 states and 25223 transitions. Word has length 4 [2022-12-14 10:45:55,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:45:55,753 INFO L495 AbstractCegarLoop]: Abstraction has 5410 states and 25223 transitions. [2022-12-14 10:45:55,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-12-14 10:45:55,754 INFO L276 IsEmpty]: Start isEmpty. Operand 5410 states and 25223 transitions. [2022-12-14 10:45:55,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 10:45:55,754 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:45:55,754 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 10:45:55,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 10:45:55,755 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-12-14 10:45:55,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:45:55,756 INFO L85 PathProgramCache]: Analyzing trace with hash 20142569, now seen corresponding path program 1 times [2022-12-14 10:45:55,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:45:55,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230408846] [2022-12-14 10:45:55,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:45:55,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:45:55,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:45:55,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:45:55,837 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:45:55,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230408846] [2022-12-14 10:45:55,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230408846] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:45:55,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:45:55,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 10:45:55,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738974874] [2022-12-14 10:45:55,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:45:55,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:45:55,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:45:55,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:45:55,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:45:55,840 INFO L87 Difference]: Start difference. First operand 5410 states and 25223 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-12-14 10:45:56,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:45:56,015 INFO L93 Difference]: Finished difference Result 5452 states and 22976 transitions. [2022-12-14 10:45:56,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:45:56,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2022-12-14 10:45:56,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:45:56,057 INFO L225 Difference]: With dead ends: 5452 [2022-12-14 10:45:56,058 INFO L226 Difference]: Without dead ends: 5444 [2022-12-14 10:45:56,058 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 [2022-12-14 10:45:56,059 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 29 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:45:56,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 7 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:45:56,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5444 states. [2022-12-14 10:45:56,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5444 to 5172. [2022-12-14 10:45:56,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5172 states, 4773 states have (on average 4.650953278860255) internal successors, (22199), 5171 states have internal predecessors, (22199), 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) [2022-12-14 10:45:56,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5172 states to 5172 states and 22199 transitions. [2022-12-14 10:45:56,305 INFO L78 Accepts]: Start accepts. Automaton has 5172 states and 22199 transitions. Word has length 4 [2022-12-14 10:45:56,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:45:56,306 INFO L495 AbstractCegarLoop]: Abstraction has 5172 states and 22199 transitions. [2022-12-14 10:45:56,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-12-14 10:45:56,306 INFO L276 IsEmpty]: Start isEmpty. Operand 5172 states and 22199 transitions. [2022-12-14 10:45:56,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 10:45:56,306 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:45:56,306 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 10:45:56,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 10:45:56,307 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-12-14 10:45:56,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:45:56,307 INFO L85 PathProgramCache]: Analyzing trace with hash 624422665, now seen corresponding path program 1 times [2022-12-14 10:45:56,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:45:56,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898580556] [2022-12-14 10:45:56,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:45:56,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:45:56,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:45:56,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:45:56,403 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:45:56,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898580556] [2022-12-14 10:45:56,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898580556] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:45:56,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013471993] [2022-12-14 10:45:56,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:45:56,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:45:56,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:45:56,405 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:45:56,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 10:45:56,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:45:56,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 10:45:56,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:45:56,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:45:56,495 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:45:56,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013471993] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:45:56,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 10:45:56,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-12-14 10:45:56,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011066882] [2022-12-14 10:45:56,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:45:56,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:45:56,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:45:56,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:45:56,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:45:56,497 INFO L87 Difference]: Start difference. First operand 5172 states and 22199 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:45:56,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:45:56,677 INFO L93 Difference]: Finished difference Result 4842 states and 20302 transitions. [2022-12-14 10:45:56,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 10:45:56,678 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-14 10:45:56,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:45:56,708 INFO L225 Difference]: With dead ends: 4842 [2022-12-14 10:45:56,708 INFO L226 Difference]: Without dead ends: 4842 [2022-12-14 10:45:56,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:45:56,710 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 65 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:45:56,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 19 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:45:56,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4842 states. [2022-12-14 10:45:56,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4842 to 4570. [2022-12-14 10:45:56,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4570 states, 4251 states have (on average 4.60009409550694) internal successors, (19555), 4569 states have internal predecessors, (19555), 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) [2022-12-14 10:45:56,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4570 states to 4570 states and 19555 transitions. [2022-12-14 10:45:56,890 INFO L78 Accepts]: Start accepts. Automaton has 4570 states and 19555 transitions. Word has length 5 [2022-12-14 10:45:56,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:45:56,891 INFO L495 AbstractCegarLoop]: Abstraction has 4570 states and 19555 transitions. [2022-12-14 10:45:56,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:45:56,891 INFO L276 IsEmpty]: Start isEmpty. Operand 4570 states and 19555 transitions. [2022-12-14 10:45:56,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 10:45:56,891 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:45:56,891 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 10:45:56,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 10:45:57,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:45:57,094 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-12-14 10:45:57,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:45:57,095 INFO L85 PathProgramCache]: Analyzing trace with hash 624422702, now seen corresponding path program 1 times [2022-12-14 10:45:57,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:45:57,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570393340] [2022-12-14 10:45:57,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:45:57,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:45:57,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:45:57,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:45:57,256 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:45:57,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570393340] [2022-12-14 10:45:57,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570393340] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:45:57,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845434635] [2022-12-14 10:45:57,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:45:57,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:45:57,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:45:57,258 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:45:57,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 10:45:57,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:45:57,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 10:45:57,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:45:57,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:45:57,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:45:57,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:45:57,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845434635] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:45:57,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2051206734] [2022-12-14 10:45:57,354 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:337) 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) [2022-12-14 10:45:57,356 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:45:57,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-14 10:45:57,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790408527] [2022-12-14 10:45:57,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 10:45:57,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 10:45:57,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:45:57,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 10:45:57,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:45:57,357 INFO L87 Difference]: Start difference. First operand 4570 states and 19555 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 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) [2022-12-14 10:45:57,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:45:57,674 INFO L93 Difference]: Finished difference Result 13842 states and 58825 transitions. [2022-12-14 10:45:57,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 10:45:57,675 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-14 10:45:57,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:45:57,739 INFO L225 Difference]: With dead ends: 13842 [2022-12-14 10:45:57,739 INFO L226 Difference]: Without dead ends: 13842 [2022-12-14 10:45:57,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:45:57,740 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 326 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 10:45:57,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 19 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 10:45:57,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13842 states. [2022-12-14 10:45:57,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13842 to 6376. [2022-12-14 10:45:58,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6376 states, 6057 states have (on average 5.43156678223543) internal successors, (32899), 6375 states have internal predecessors, (32899), 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) [2022-12-14 10:45:58,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6376 states to 6376 states and 32899 transitions. [2022-12-14 10:45:58,066 INFO L78 Accepts]: Start accepts. Automaton has 6376 states and 32899 transitions. Word has length 5 [2022-12-14 10:45:58,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:45:58,066 INFO L495 AbstractCegarLoop]: Abstraction has 6376 states and 32899 transitions. [2022-12-14 10:45:58,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 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) [2022-12-14 10:45:58,066 INFO L276 IsEmpty]: Start isEmpty. Operand 6376 states and 32899 transitions. [2022-12-14 10:45:58,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 10:45:58,067 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:45:58,067 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 10:45:58,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-14 10:45:58,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:45:58,268 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-12-14 10:45:58,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:45:58,269 INFO L85 PathProgramCache]: Analyzing trace with hash 624422624, now seen corresponding path program 1 times [2022-12-14 10:45:58,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:45:58,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697085346] [2022-12-14 10:45:58,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:45:58,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:45:58,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:45:58,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:45:58,403 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:45:58,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697085346] [2022-12-14 10:45:58,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697085346] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:45:58,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:45:58,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 10:45:58,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408738828] [2022-12-14 10:45:58,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:45:58,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:45:58,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:45:58,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:45:58,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:45:58,407 INFO L87 Difference]: Start difference. First operand 6376 states and 32899 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:45:58,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:45:58,501 INFO L93 Difference]: Finished difference Result 5774 states and 28449 transitions. [2022-12-14 10:45:58,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:45:58,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-14 10:45:58,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:45:58,530 INFO L225 Difference]: With dead ends: 5774 [2022-12-14 10:45:58,530 INFO L226 Difference]: Without dead ends: 5774 [2022-12-14 10:45:58,531 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 [2022-12-14 10:45:58,531 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 33 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:45:58,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 4 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:45:58,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5774 states. [2022-12-14 10:45:58,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5774 to 5774. [2022-12-14 10:45:58,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5774 states, 5535 states have (on average 5.139837398373984) internal successors, (28449), 5773 states have internal predecessors, (28449), 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) [2022-12-14 10:45:58,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5774 states to 5774 states and 28449 transitions. [2022-12-14 10:45:58,753 INFO L78 Accepts]: Start accepts. Automaton has 5774 states and 28449 transitions. Word has length 5 [2022-12-14 10:45:58,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:45:58,753 INFO L495 AbstractCegarLoop]: Abstraction has 5774 states and 28449 transitions. [2022-12-14 10:45:58,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:45:58,753 INFO L276 IsEmpty]: Start isEmpty. Operand 5774 states and 28449 transitions. [2022-12-14 10:45:58,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 10:45:58,754 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:45:58,754 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 10:45:58,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 10:45:58,754 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-12-14 10:45:58,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:45:58,755 INFO L85 PathProgramCache]: Analyzing trace with hash 624422625, now seen corresponding path program 1 times [2022-12-14 10:45:58,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:45:58,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331106749] [2022-12-14 10:45:58,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:45:58,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:45:58,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:45:58,789 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:45:58,789 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:45:58,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331106749] [2022-12-14 10:45:58,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331106749] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:45:58,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210753533] [2022-12-14 10:45:58,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:45:58,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:45:58,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:45:58,791 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:45:58,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 10:45:58,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:45:58,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 10:45:58,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:45:58,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:45:58,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:45:58,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:45:58,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210753533] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:45:58,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [381395720] [2022-12-14 10:45:58,863 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:337) 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) [2022-12-14 10:45:58,863 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:45:58,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-12-14 10:45:58,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071761912] [2022-12-14 10:45:58,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 10:45:58,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 10:45:58,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:45:58,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 10:45:58,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:45:58,864 INFO L87 Difference]: Start difference. First operand 5774 states and 28449 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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) [2022-12-14 10:45:59,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:45:59,151 INFO L93 Difference]: Finished difference Result 14728 states and 64565 transitions. [2022-12-14 10:45:59,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 10:45:59,152 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-14 10:45:59,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:45:59,221 INFO L225 Difference]: With dead ends: 14728 [2022-12-14 10:45:59,221 INFO L226 Difference]: Without dead ends: 14724 [2022-12-14 10:45:59,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:45:59,222 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 174 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 10:45:59,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 16 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 10:45:59,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14724 states. [2022-12-14 10:45:59,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14724 to 10314. [2022-12-14 10:45:59,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10314 states, 10075 states have (on average 5.115136476426799) internal successors, (51535), 10313 states have internal predecessors, (51535), 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) [2022-12-14 10:45:59,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10314 states to 10314 states and 51535 transitions. [2022-12-14 10:45:59,586 INFO L78 Accepts]: Start accepts. Automaton has 10314 states and 51535 transitions. Word has length 5 [2022-12-14 10:45:59,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:45:59,586 INFO L495 AbstractCegarLoop]: Abstraction has 10314 states and 51535 transitions. [2022-12-14 10:45:59,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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) [2022-12-14 10:45:59,586 INFO L276 IsEmpty]: Start isEmpty. Operand 10314 states and 51535 transitions. [2022-12-14 10:45:59,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 10:45:59,587 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:45:59,587 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1] [2022-12-14 10:45:59,591 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 10:45:59,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:45:59,789 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-12-14 10:45:59,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:45:59,790 INFO L85 PathProgramCache]: Analyzing trace with hash 673996791, now seen corresponding path program 2 times [2022-12-14 10:45:59,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:45:59,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464882564] [2022-12-14 10:45:59,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:45:59,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:45:59,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:45:59,955 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:45:59,955 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:45:59,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464882564] [2022-12-14 10:45:59,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464882564] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:45:59,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215481688] [2022-12-14 10:45:59,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 10:45:59,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:45:59,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:45:59,956 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:45:59,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 10:46:00,006 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-14 10:46:00,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 10:46:00,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 10:46:00,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:46:00,019 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 10:46:00,019 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:46:00,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215481688] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:46:00,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 10:46:00,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2022-12-14 10:46:00,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866832185] [2022-12-14 10:46:00,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:46:00,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:46:00,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:46:00,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:46:00,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-14 10:46:00,020 INFO L87 Difference]: Start difference. First operand 10314 states and 51535 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:46:00,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:46:00,098 INFO L93 Difference]: Finished difference Result 8094 states and 39225 transitions. [2022-12-14 10:46:00,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:46:00,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 10:46:00,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:46:00,126 INFO L225 Difference]: With dead ends: 8094 [2022-12-14 10:46:00,126 INFO L226 Difference]: Without dead ends: 8094 [2022-12-14 10:46:00,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-14 10:46:00,127 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 33 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:46:00,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 4 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:46:00,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8094 states. [2022-12-14 10:46:00,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8094 to 4998. [2022-12-14 10:46:00,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4998 states, 4871 states have (on average 4.770478341203038) internal successors, (23237), 4997 states have internal predecessors, (23237), 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) [2022-12-14 10:46:00,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4998 states to 4998 states and 23237 transitions. [2022-12-14 10:46:00,303 INFO L78 Accepts]: Start accepts. Automaton has 4998 states and 23237 transitions. Word has length 8 [2022-12-14 10:46:00,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:46:00,303 INFO L495 AbstractCegarLoop]: Abstraction has 4998 states and 23237 transitions. [2022-12-14 10:46:00,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:46:00,304 INFO L276 IsEmpty]: Start isEmpty. Operand 4998 states and 23237 transitions. [2022-12-14 10:46:00,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 10:46:00,304 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:46:00,304 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1] [2022-12-14 10:46:00,309 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 10:46:00,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:46:00,507 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-12-14 10:46:00,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:46:00,508 INFO L85 PathProgramCache]: Analyzing trace with hash 673996714, now seen corresponding path program 2 times [2022-12-14 10:46:00,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:46:00,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897645389] [2022-12-14 10:46:00,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:46:00,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:46:00,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:46:00,621 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:46:00,621 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:46:00,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897645389] [2022-12-14 10:46:00,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897645389] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:46:00,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096223552] [2022-12-14 10:46:00,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 10:46:00,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:46:00,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:46:00,623 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:46:00,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 10:46:00,690 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 10:46:00,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 10:46:00,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 10:46:00,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:46:00,708 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:46:00,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:46:00,753 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:46:00,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096223552] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:46:00,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1773830024] [2022-12-14 10:46:00,754 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:337) 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) [2022-12-14 10:46:00,754 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:46:00,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-12-14 10:46:00,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989668348] [2022-12-14 10:46:00,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 10:46:00,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 10:46:00,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:46:00,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 10:46:00,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-12-14 10:46:00,756 INFO L87 Difference]: Start difference. First operand 4998 states and 23237 transitions. Second operand has 13 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 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) [2022-12-14 10:46:01,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:46:01,364 INFO L93 Difference]: Finished difference Result 19016 states and 83123 transitions. [2022-12-14 10:46:01,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 10:46:01,364 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 10:46:01,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:46:01,462 INFO L225 Difference]: With dead ends: 19016 [2022-12-14 10:46:01,462 INFO L226 Difference]: Without dead ends: 19008 [2022-12-14 10:46:01,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-12-14 10:46:01,463 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 784 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 10:46:01,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [784 Valid, 34 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 10:46:01,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19008 states. [2022-12-14 10:46:01,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19008 to 8544. [2022-12-14 10:46:01,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8544 states, 8417 states have (on average 4.999049542592372) internal successors, (42077), 8543 states have internal predecessors, (42077), 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) [2022-12-14 10:46:01,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8544 states to 8544 states and 42077 transitions. [2022-12-14 10:46:01,804 INFO L78 Accepts]: Start accepts. Automaton has 8544 states and 42077 transitions. Word has length 8 [2022-12-14 10:46:01,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:46:01,804 INFO L495 AbstractCegarLoop]: Abstraction has 8544 states and 42077 transitions. [2022-12-14 10:46:01,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 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) [2022-12-14 10:46:01,804 INFO L276 IsEmpty]: Start isEmpty. Operand 8544 states and 42077 transitions. [2022-12-14 10:46:01,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 10:46:01,805 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:46:01,805 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:46:01,810 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 10:46:02,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-14 10:46:02,007 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-12-14 10:46:02,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:46:02,008 INFO L85 PathProgramCache]: Analyzing trace with hash 673595194, now seen corresponding path program 1 times [2022-12-14 10:46:02,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:46:02,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962374243] [2022-12-14 10:46:02,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:46:02,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:46:02,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:46:02,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:46:02,071 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:46:02,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962374243] [2022-12-14 10:46:02,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962374243] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:46:02,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:46:02,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 10:46:02,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796149752] [2022-12-14 10:46:02,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:46:02,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:46:02,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:46:02,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:46:02,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:46:02,072 INFO L87 Difference]: Start difference. First operand 8544 states and 42077 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:46:02,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:46:02,211 INFO L93 Difference]: Finished difference Result 12274 states and 59959 transitions. [2022-12-14 10:46:02,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:46:02,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 10:46:02,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:46:02,261 INFO L225 Difference]: With dead ends: 12274 [2022-12-14 10:46:02,261 INFO L226 Difference]: Without dead ends: 12266 [2022-12-14 10:46:02,261 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 [2022-12-14 10:46:02,262 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 29 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:46:02,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 10 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:46:02,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12266 states. [2022-12-14 10:46:02,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12266 to 10516. [2022-12-14 10:46:02,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10516 states, 10389 states have (on average 5.121089614014823) internal successors, (53203), 10515 states have internal predecessors, (53203), 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) [2022-12-14 10:46:02,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10516 states to 10516 states and 53203 transitions. [2022-12-14 10:46:02,515 INFO L78 Accepts]: Start accepts. Automaton has 10516 states and 53203 transitions. Word has length 8 [2022-12-14 10:46:02,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:46:02,515 INFO L495 AbstractCegarLoop]: Abstraction has 10516 states and 53203 transitions. [2022-12-14 10:46:02,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:46:02,515 INFO L276 IsEmpty]: Start isEmpty. Operand 10516 states and 53203 transitions. [2022-12-14 10:46:02,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 10:46:02,516 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:46:02,516 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:46:02,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 10:46:02,516 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-12-14 10:46:02,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:46:02,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1666771135, now seen corresponding path program 1 times [2022-12-14 10:46:02,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:46:02,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36761623] [2022-12-14 10:46:02,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:46:02,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:46:02,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:46:02,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:46:02,544 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:46:02,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36761623] [2022-12-14 10:46:02,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36761623] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:46:02,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:46:02,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 10:46:02,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015110951] [2022-12-14 10:46:02,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:46:02,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:46:02,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:46:02,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:46:02,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:46:02,546 INFO L87 Difference]: Start difference. First operand 10516 states and 53203 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:46:02,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:46:02,746 INFO L93 Difference]: Finished difference Result 17360 states and 88062 transitions. [2022-12-14 10:46:02,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:46:02,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 10:46:02,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:46:02,819 INFO L225 Difference]: With dead ends: 17360 [2022-12-14 10:46:02,819 INFO L226 Difference]: Without dead ends: 17360 [2022-12-14 10:46:02,819 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 [2022-12-14 10:46:02,820 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 28 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:46:02,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 10 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:46:02,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17360 states. [2022-12-14 10:46:03,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17360 to 12230. [2022-12-14 10:46:03,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12230 states, 12103 states have (on average 5.5418491283152935) internal successors, (67073), 12229 states have internal predecessors, (67073), 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) [2022-12-14 10:46:03,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12230 states to 12230 states and 67073 transitions. [2022-12-14 10:46:03,128 INFO L78 Accepts]: Start accepts. Automaton has 12230 states and 67073 transitions. Word has length 8 [2022-12-14 10:46:03,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:46:03,129 INFO L495 AbstractCegarLoop]: Abstraction has 12230 states and 67073 transitions. [2022-12-14 10:46:03,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:46:03,129 INFO L276 IsEmpty]: Start isEmpty. Operand 12230 states and 67073 transitions. [2022-12-14 10:46:03,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 10:46:03,129 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:46:03,129 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:46:03,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 10:46:03,130 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-12-14 10:46:03,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:46:03,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1666771076, now seen corresponding path program 1 times [2022-12-14 10:46:03,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:46:03,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609041594] [2022-12-14 10:46:03,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:46:03,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:46:03,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:46:03,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:46:03,157 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:46:03,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609041594] [2022-12-14 10:46:03,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609041594] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:46:03,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:46:03,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 10:46:03,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497610351] [2022-12-14 10:46:03,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:46:03,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:46:03,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:46:03,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:46:03,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:46:03,159 INFO L87 Difference]: Start difference. First operand 12230 states and 67073 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2022-12-14 10:46:03,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:46:03,301 INFO L93 Difference]: Finished difference Result 11658 states and 58101 transitions. [2022-12-14 10:46:03,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:46:03,302 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 10:46:03,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:46:03,357 INFO L225 Difference]: With dead ends: 11658 [2022-12-14 10:46:03,357 INFO L226 Difference]: Without dead ends: 11600 [2022-12-14 10:46:03,357 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 [2022-12-14 10:46:03,358 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 22 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:46:03,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 7 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:46:03,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11600 states. [2022-12-14 10:46:03,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11600 to 11370. [2022-12-14 10:46:03,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11370 states, 11243 states have (on average 5.072578493284711) internal successors, (57031), 11369 states have internal predecessors, (57031), 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) [2022-12-14 10:46:03,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11370 states to 11370 states and 57031 transitions. [2022-12-14 10:46:03,658 INFO L78 Accepts]: Start accepts. Automaton has 11370 states and 57031 transitions. Word has length 8 [2022-12-14 10:46:03,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:46:03,659 INFO L495 AbstractCegarLoop]: Abstraction has 11370 states and 57031 transitions. [2022-12-14 10:46:03,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2022-12-14 10:46:03,659 INFO L276 IsEmpty]: Start isEmpty. Operand 11370 states and 57031 transitions. [2022-12-14 10:46:03,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 10:46:03,659 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:46:03,659 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:46:03,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 10:46:03,660 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-12-14 10:46:03,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:46:03,660 INFO L85 PathProgramCache]: Analyzing trace with hash 130299486, now seen corresponding path program 1 times [2022-12-14 10:46:03,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:46:03,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191850051] [2022-12-14 10:46:03,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:46:03,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:46:03,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:46:03,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:46:03,682 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:46:03,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191850051] [2022-12-14 10:46:03,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191850051] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:46:03,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:46:03,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 10:46:03,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715678874] [2022-12-14 10:46:03,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:46:03,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:46:03,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:46:03,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:46:03,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:46:03,684 INFO L87 Difference]: Start difference. First operand 11370 states and 57031 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) [2022-12-14 10:46:03,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:46:03,803 INFO L93 Difference]: Finished difference Result 9656 states and 48281 transitions. [2022-12-14 10:46:03,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:46:03,803 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 9 [2022-12-14 10:46:03,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:46:03,843 INFO L225 Difference]: With dead ends: 9656 [2022-12-14 10:46:03,844 INFO L226 Difference]: Without dead ends: 9656 [2022-12-14 10:46:03,844 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 [2022-12-14 10:46:03,844 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 28 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:46:03,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 10 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:46:03,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9656 states. [2022-12-14 10:46:03,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9656 to 9656. [2022-12-14 10:46:04,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9656 states, 9561 states have (on average 5.049785587281665) internal successors, (48281), 9655 states have internal predecessors, (48281), 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) [2022-12-14 10:46:04,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9656 states to 9656 states and 48281 transitions. [2022-12-14 10:46:04,041 INFO L78 Accepts]: Start accepts. Automaton has 9656 states and 48281 transitions. Word has length 9 [2022-12-14 10:46:04,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:46:04,041 INFO L495 AbstractCegarLoop]: Abstraction has 9656 states and 48281 transitions. [2022-12-14 10:46:04,041 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) [2022-12-14 10:46:04,041 INFO L276 IsEmpty]: Start isEmpty. Operand 9656 states and 48281 transitions. [2022-12-14 10:46:04,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 10:46:04,042 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:46:04,042 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:46:04,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 10:46:04,042 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-12-14 10:46:04,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:46:04,043 INFO L85 PathProgramCache]: Analyzing trace with hash 130299427, now seen corresponding path program 1 times [2022-12-14 10:46:04,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:46:04,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203292369] [2022-12-14 10:46:04,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:46:04,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:46:04,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:46:04,063 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:46:04,064 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:46:04,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203292369] [2022-12-14 10:46:04,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203292369] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:46:04,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:46:04,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 10:46:04,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919016118] [2022-12-14 10:46:04,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:46:04,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:46:04,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:46:04,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:46:04,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:46:04,065 INFO L87 Difference]: Start difference. First operand 9656 states and 48281 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) [2022-12-14 10:46:04,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:46:04,140 INFO L93 Difference]: Finished difference Result 7942 states and 39531 transitions. [2022-12-14 10:46:04,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:46:04,141 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 9 [2022-12-14 10:46:04,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:46:04,169 INFO L225 Difference]: With dead ends: 7942 [2022-12-14 10:46:04,169 INFO L226 Difference]: Without dead ends: 7942 [2022-12-14 10:46:04,169 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 [2022-12-14 10:46:04,170 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 30 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:46:04,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 4 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:46:04,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7942 states. [2022-12-14 10:46:04,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7942 to 7942. [2022-12-14 10:46:04,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7942 states, 7879 states have (on average 5.017261073740323) internal successors, (39531), 7941 states have internal predecessors, (39531), 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) [2022-12-14 10:46:04,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7942 states to 7942 states and 39531 transitions. [2022-12-14 10:46:04,411 INFO L78 Accepts]: Start accepts. Automaton has 7942 states and 39531 transitions. Word has length 9 [2022-12-14 10:46:04,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:46:04,411 INFO L495 AbstractCegarLoop]: Abstraction has 7942 states and 39531 transitions. [2022-12-14 10:46:04,412 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) [2022-12-14 10:46:04,412 INFO L276 IsEmpty]: Start isEmpty. Operand 7942 states and 39531 transitions. [2022-12-14 10:46:04,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 10:46:04,412 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:46:04,412 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:46:04,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 10:46:04,413 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-12-14 10:46:04,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:46:04,413 INFO L85 PathProgramCache]: Analyzing trace with hash 130299428, now seen corresponding path program 1 times [2022-12-14 10:46:04,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:46:04,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599270019] [2022-12-14 10:46:04,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:46:04,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:46:04,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:46:04,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:46:04,445 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:46:04,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599270019] [2022-12-14 10:46:04,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599270019] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:46:04,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727910678] [2022-12-14 10:46:04,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:46:04,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:46:04,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:46:04,447 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:46:04,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 10:46:04,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:46:04,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 10:46:04,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:46:04,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:46:04,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:46:04,538 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:46:04,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727910678] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:46:04,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1644658584] [2022-12-14 10:46:04,539 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:337) 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) [2022-12-14 10:46:04,539 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:46:04,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-12-14 10:46:04,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965632599] [2022-12-14 10:46:04,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 10:46:04,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 10:46:04,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:46:04,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 10:46:04,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:46:04,540 INFO L87 Difference]: Start difference. First operand 7942 states and 39531 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 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) [2022-12-14 10:46:04,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:46:04,816 INFO L93 Difference]: Finished difference Result 18672 states and 92527 transitions. [2022-12-14 10:46:04,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 10:46:04,817 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 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 [2022-12-14 10:46:04,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:46:04,905 INFO L225 Difference]: With dead ends: 18672 [2022-12-14 10:46:04,906 INFO L226 Difference]: Without dead ends: 18648 [2022-12-14 10:46:04,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:46:04,906 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 172 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:46:04,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 16 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:46:04,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18648 states. [2022-12-14 10:46:05,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18648 to 14252. [2022-12-14 10:46:05,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14252 states, 14189 states have (on average 5.353865670589894) internal successors, (75966), 14251 states have internal predecessors, (75966), 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) [2022-12-14 10:46:05,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14252 states to 14252 states and 75966 transitions. [2022-12-14 10:46:05,411 INFO L78 Accepts]: Start accepts. Automaton has 14252 states and 75966 transitions. Word has length 9 [2022-12-14 10:46:05,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:46:05,411 INFO L495 AbstractCegarLoop]: Abstraction has 14252 states and 75966 transitions. [2022-12-14 10:46:05,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 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) [2022-12-14 10:46:05,411 INFO L276 IsEmpty]: Start isEmpty. Operand 14252 states and 75966 transitions. [2022-12-14 10:46:05,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 10:46:05,412 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:46:05,412 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:46:05,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-14 10:46:05,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-14 10:46:05,614 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-12-14 10:46:05,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:46:05,615 INFO L85 PathProgramCache]: Analyzing trace with hash -841573660, now seen corresponding path program 1 times [2022-12-14 10:46:05,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:46:05,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95187990] [2022-12-14 10:46:05,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:46:05,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:46:05,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:46:05,668 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 10:46:05,669 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:46:05,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95187990] [2022-12-14 10:46:05,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95187990] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:46:05,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892737532] [2022-12-14 10:46:05,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:46:05,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:46:05,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:46:05,670 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:46:05,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 10:46:05,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:46:05,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 10:46:05,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:46:05,747 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 10:46:05,747 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:46:05,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892737532] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:46:05,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 10:46:05,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-12-14 10:46:05,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306764457] [2022-12-14 10:46:05,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:46:05,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:46:05,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:46:05,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:46:05,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:46:05,749 INFO L87 Difference]: Start difference. First operand 14252 states and 75966 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 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) [2022-12-14 10:46:05,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:46:05,970 INFO L93 Difference]: Finished difference Result 14990 states and 75942 transitions. [2022-12-14 10:46:05,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 10:46:05,971 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 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 10 [2022-12-14 10:46:05,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:46:06,044 INFO L225 Difference]: With dead ends: 14990 [2022-12-14 10:46:06,045 INFO L226 Difference]: Without dead ends: 14990 [2022-12-14 10:46:06,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:46:06,045 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 55 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:46:06,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 15 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:46:06,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14990 states. [2022-12-14 10:46:06,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14990 to 12624. [2022-12-14 10:46:06,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12624 states, 12577 states have (on average 5.26938061540908) internal successors, (66273), 12623 states have internal predecessors, (66273), 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) [2022-12-14 10:46:06,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12624 states to 12624 states and 66273 transitions. [2022-12-14 10:46:06,488 INFO L78 Accepts]: Start accepts. Automaton has 12624 states and 66273 transitions. Word has length 10 [2022-12-14 10:46:06,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:46:06,488 INFO L495 AbstractCegarLoop]: Abstraction has 12624 states and 66273 transitions. [2022-12-14 10:46:06,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 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) [2022-12-14 10:46:06,488 INFO L276 IsEmpty]: Start isEmpty. Operand 12624 states and 66273 transitions. [2022-12-14 10:46:06,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 10:46:06,489 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:46:06,489 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:46:06,493 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 10:46:06,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:46:06,691 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-12-14 10:46:06,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:46:06,692 INFO L85 PathProgramCache]: Analyzing trace with hash -841573644, now seen corresponding path program 1 times [2022-12-14 10:46:06,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:46:06,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579431894] [2022-12-14 10:46:06,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:46:06,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:46:06,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:46:06,734 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 10:46:06,734 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:46:06,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579431894] [2022-12-14 10:46:06,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579431894] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:46:06,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109549761] [2022-12-14 10:46:06,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:46:06,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:46:06,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:46:06,736 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:46:06,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 10:46:06,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:46:06,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 10:46:06,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:46:06,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 10:46:06,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:46:06,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 10:46:06,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109549761] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:46:06,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1531973387] [2022-12-14 10:46:06,827 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:337) 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) [2022-12-14 10:46:06,827 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:46:06,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-14 10:46:06,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166421100] [2022-12-14 10:46:06,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 10:46:06,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 10:46:06,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:46:06,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 10:46:06,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:46:06,828 INFO L87 Difference]: Start difference. First operand 12624 states and 66273 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 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) [2022-12-14 10:46:07,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:46:07,240 INFO L93 Difference]: Finished difference Result 30152 states and 152553 transitions. [2022-12-14 10:46:07,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 10:46:07,241 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 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 10 [2022-12-14 10:46:07,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:46:07,402 INFO L225 Difference]: With dead ends: 30152 [2022-12-14 10:46:07,402 INFO L226 Difference]: Without dead ends: 29984 [2022-12-14 10:46:07,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:46:07,403 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 238 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:46:07,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 16 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:46:07,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29984 states. [2022-12-14 10:46:07,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29984 to 19332. [2022-12-14 10:46:07,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19332 states, 19285 states have (on average 5.554316826549131) internal successors, (107115), 19331 states have internal predecessors, (107115), 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) [2022-12-14 10:46:08,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19332 states to 19332 states and 107115 transitions. [2022-12-14 10:46:08,048 INFO L78 Accepts]: Start accepts. Automaton has 19332 states and 107115 transitions. Word has length 10 [2022-12-14 10:46:08,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:46:08,048 INFO L495 AbstractCegarLoop]: Abstraction has 19332 states and 107115 transitions. [2022-12-14 10:46:08,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 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) [2022-12-14 10:46:08,049 INFO L276 IsEmpty]: Start isEmpty. Operand 19332 states and 107115 transitions. [2022-12-14 10:46:08,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 10:46:08,050 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:46:08,050 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:46:08,054 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-14 10:46:08,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-14 10:46:08,252 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-12-14 10:46:08,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:46:08,253 INFO L85 PathProgramCache]: Analyzing trace with hash -907246384, now seen corresponding path program 1 times [2022-12-14 10:46:08,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:46:08,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314208526] [2022-12-14 10:46:08,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:46:08,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:46:08,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:46:08,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:46:08,308 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:46:08,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314208526] [2022-12-14 10:46:08,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314208526] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:46:08,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:46:08,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 10:46:08,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097485544] [2022-12-14 10:46:08,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:46:08,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:46:08,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:46:08,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:46:08,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:46:08,309 INFO L87 Difference]: Start difference. First operand 19332 states and 107115 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:46:08,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:46:08,547 INFO L93 Difference]: Finished difference Result 26128 states and 145093 transitions. [2022-12-14 10:46:08,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:46:08,548 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-12-14 10:46:08,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:46:08,662 INFO L225 Difference]: With dead ends: 26128 [2022-12-14 10:46:08,663 INFO L226 Difference]: Without dead ends: 26010 [2022-12-14 10:46:08,663 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 [2022-12-14 10:46:08,663 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 21 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:46:08,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 10 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:46:08,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26010 states. [2022-12-14 10:46:09,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26010 to 22316. [2022-12-14 10:46:09,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22316 states, 22269 states have (on average 5.710674031164399) internal successors, (127171), 22315 states have internal predecessors, (127171), 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) [2022-12-14 10:46:09,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22316 states to 22316 states and 127171 transitions. [2022-12-14 10:46:09,365 INFO L78 Accepts]: Start accepts. Automaton has 22316 states and 127171 transitions. Word has length 12 [2022-12-14 10:46:09,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:46:09,365 INFO L495 AbstractCegarLoop]: Abstraction has 22316 states and 127171 transitions. [2022-12-14 10:46:09,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:46:09,365 INFO L276 IsEmpty]: Start isEmpty. Operand 22316 states and 127171 transitions. [2022-12-14 10:46:09,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 10:46:09,366 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:46:09,367 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:46:09,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-14 10:46:09,367 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-12-14 10:46:09,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:46:09,367 INFO L85 PathProgramCache]: Analyzing trace with hash -896608187, now seen corresponding path program 2 times [2022-12-14 10:46:09,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:46:09,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487780051] [2022-12-14 10:46:09,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:46:09,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:46:09,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:46:09,463 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:46:09,463 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:46:09,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487780051] [2022-12-14 10:46:09,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487780051] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:46:09,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896696260] [2022-12-14 10:46:09,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 10:46:09,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:46:09,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:46:09,464 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:46:09,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 10:46:09,538 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 10:46:09,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 10:46:09,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 10:46:09,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:46:09,557 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:46:09,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:46:09,599 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:46:09,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896696260] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:46:09,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2036533906] [2022-12-14 10:46:09,600 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:337) 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) [2022-12-14 10:46:09,600 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:46:09,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-12-14 10:46:09,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477721706] [2022-12-14 10:46:09,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 10:46:09,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 10:46:09,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:46:09,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 10:46:09,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-12-14 10:46:09,601 INFO L87 Difference]: Start difference. First operand 22316 states and 127171 transitions. Second operand has 13 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 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) [2022-12-14 10:46:10,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:46:10,610 INFO L93 Difference]: Finished difference Result 68486 states and 378531 transitions. [2022-12-14 10:46:10,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 10:46:10,611 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 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 [2022-12-14 10:46:10,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:46:11,008 INFO L225 Difference]: With dead ends: 68486 [2022-12-14 10:46:11,008 INFO L226 Difference]: Without dead ends: 68390 [2022-12-14 10:46:11,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-12-14 10:46:11,009 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 397 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 10:46:11,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 34 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 10:46:11,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68390 states. [2022-12-14 10:46:12,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68390 to 40262. [2022-12-14 10:46:12,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40262 states, 40215 states have (on average 5.9222926768618676) internal successors, (238165), 40261 states have internal predecessors, (238165), 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) [2022-12-14 10:46:12,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40262 states to 40262 states and 238165 transitions. [2022-12-14 10:46:12,711 INFO L78 Accepts]: Start accepts. Automaton has 40262 states and 238165 transitions. Word has length 12 [2022-12-14 10:46:12,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:46:12,711 INFO L495 AbstractCegarLoop]: Abstraction has 40262 states and 238165 transitions. [2022-12-14 10:46:12,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 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) [2022-12-14 10:46:12,711 INFO L276 IsEmpty]: Start isEmpty. Operand 40262 states and 238165 transitions. [2022-12-14 10:46:12,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 10:46:12,714 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:46:12,714 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1] [2022-12-14 10:46:12,718 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-14 10:46:12,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-14 10:46:12,915 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-12-14 10:46:12,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:46:12,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1117930570, now seen corresponding path program 3 times [2022-12-14 10:46:12,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:46:12,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198217155] [2022-12-14 10:46:12,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:46:12,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:46:13,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:46:13,137 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:46:13,137 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:46:13,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198217155] [2022-12-14 10:46:13,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198217155] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:46:13,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252843350] [2022-12-14 10:46:13,137 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 10:46:13,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:46:13,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:46:13,138 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:46:13,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 10:46:13,202 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 10:46:13,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 10:46:13,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-14 10:46:13,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:46:13,226 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:46:13,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:46:13,343 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:46:13,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252843350] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:46:13,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1908255323] [2022-12-14 10:46:13,343 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:337) 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) [2022-12-14 10:46:13,343 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:46:13,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-12-14 10:46:13,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940450102] [2022-12-14 10:46:13,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 10:46:13,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-14 10:46:13,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:46:13,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-14 10:46:13,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-12-14 10:46:13,344 INFO L87 Difference]: Start difference. First operand 40262 states and 238165 transitions. Second operand has 25 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 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) [2022-12-14 10:46:16,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:46:16,090 INFO L93 Difference]: Finished difference Result 177160 states and 982377 transitions. [2022-12-14 10:46:16,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-14 10:46:16,090 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 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 14 [2022-12-14 10:46:16,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:46:17,325 INFO L225 Difference]: With dead ends: 177160 [2022-12-14 10:46:17,325 INFO L226 Difference]: Without dead ends: 177112 [2022-12-14 10:46:17,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-12-14 10:46:17,326 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 1248 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1248 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 10:46:17,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1248 Valid, 73 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 10:46:17,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177112 states. [2022-12-14 10:46:20,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177112 to 79778. [2022-12-14 10:46:20,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79778 states, 79731 states have (on average 5.978565426245751) internal successors, (476677), 79777 states have internal predecessors, (476677), 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) [2022-12-14 10:46:21,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79778 states to 79778 states and 476677 transitions. [2022-12-14 10:46:21,298 INFO L78 Accepts]: Start accepts. Automaton has 79778 states and 476677 transitions. Word has length 14 [2022-12-14 10:46:21,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:46:21,298 INFO L495 AbstractCegarLoop]: Abstraction has 79778 states and 476677 transitions. [2022-12-14 10:46:21,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 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) [2022-12-14 10:46:21,298 INFO L276 IsEmpty]: Start isEmpty. Operand 79778 states and 476677 transitions. [2022-12-14 10:46:21,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 10:46:21,302 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:46:21,302 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:46:21,307 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-14 10:46:21,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:46:21,502 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-12-14 10:46:21,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:46:21,503 INFO L85 PathProgramCache]: Analyzing trace with hash 14629038, now seen corresponding path program 1 times [2022-12-14 10:46:21,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:46:21,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113663928] [2022-12-14 10:46:21,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:46:21,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:46:21,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:46:21,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:46:21,531 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:46:21,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113663928] [2022-12-14 10:46:21,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113663928] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:46:21,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278328590] [2022-12-14 10:46:21,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:46:21,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:46:21,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:46:21,533 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:46:21,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-14 10:46:21,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:46:21,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 10:46:21,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:46:21,602 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:46:21,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:46:21,613 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:46:21,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278328590] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:46:21,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1711599486] [2022-12-14 10:46:21,613 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:337) 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) [2022-12-14 10:46:21,613 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:46:21,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-14 10:46:21,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280510170] [2022-12-14 10:46:21,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 10:46:21,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 10:46:21,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:46:21,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 10:46:21,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:46:21,615 INFO L87 Difference]: Start difference. First operand 79778 states and 476677 transitions. Second operand has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 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) [2022-12-14 10:46:23,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:46:23,735 INFO L93 Difference]: Finished difference Result 162414 states and 986033 transitions. [2022-12-14 10:46:23,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 10:46:23,736 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 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 14 [2022-12-14 10:46:23,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:46:25,096 INFO L225 Difference]: With dead ends: 162414 [2022-12-14 10:46:25,096 INFO L226 Difference]: Without dead ends: 162414 [2022-12-14 10:46:25,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:46:25,096 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 139 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:46:25,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 26 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:46:25,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162414 states. [2022-12-14 10:46:28,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162414 to 114488. [2022-12-14 10:46:29,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114488 states, 114441 states have (on average 6.529277094747512) internal successors, (747217), 114487 states have internal predecessors, (747217), 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) [2022-12-14 10:46:30,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114488 states to 114488 states and 747217 transitions. [2022-12-14 10:46:30,006 INFO L78 Accepts]: Start accepts. Automaton has 114488 states and 747217 transitions. Word has length 14 [2022-12-14 10:46:30,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:46:30,007 INFO L495 AbstractCegarLoop]: Abstraction has 114488 states and 747217 transitions. [2022-12-14 10:46:30,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 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) [2022-12-14 10:46:30,007 INFO L276 IsEmpty]: Start isEmpty. Operand 114488 states and 747217 transitions. [2022-12-14 10:46:30,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 10:46:30,010 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:46:30,010 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:46:30,014 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-14 10:46:30,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:46:30,211 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-12-14 10:46:30,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:46:30,212 INFO L85 PathProgramCache]: Analyzing trace with hash 14629016, now seen corresponding path program 1 times [2022-12-14 10:46:30,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:46:30,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334556919] [2022-12-14 10:46:30,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:46:30,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:46:30,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:46:30,258 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:46:30,258 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:46:30,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334556919] [2022-12-14 10:46:30,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334556919] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:46:30,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:46:30,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 10:46:30,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111825534] [2022-12-14 10:46:30,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:46:30,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:46:30,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:46:30,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:46:30,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:46:30,260 INFO L87 Difference]: Start difference. First operand 114488 states and 747217 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 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) [2022-12-14 10:46:31,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:46:31,536 INFO L93 Difference]: Finished difference Result 105646 states and 657173 transitions. [2022-12-14 10:46:31,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:46:31,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 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 14 [2022-12-14 10:46:31,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:46:32,386 INFO L225 Difference]: With dead ends: 105646 [2022-12-14 10:46:32,387 INFO L226 Difference]: Without dead ends: 105148 [2022-12-14 10:46:32,387 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 [2022-12-14 10:46:32,388 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 22 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:46:32,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 10 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:46:32,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105148 states. [2022-12-14 10:46:35,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105148 to 103246. [2022-12-14 10:46:35,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103246 states, 103211 states have (on average 6.224036197692106) internal successors, (642389), 103245 states have internal predecessors, (642389), 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) [2022-12-14 10:46:36,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103246 states to 103246 states and 642389 transitions. [2022-12-14 10:46:36,334 INFO L78 Accepts]: Start accepts. Automaton has 103246 states and 642389 transitions. Word has length 14 [2022-12-14 10:46:36,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:46:36,334 INFO L495 AbstractCegarLoop]: Abstraction has 103246 states and 642389 transitions. [2022-12-14 10:46:36,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 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) [2022-12-14 10:46:36,335 INFO L276 IsEmpty]: Start isEmpty. Operand 103246 states and 642389 transitions. [2022-12-14 10:46:36,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 10:46:36,339 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:46:36,339 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:46:36,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-14 10:46:36,339 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-12-14 10:46:36,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:46:36,340 INFO L85 PathProgramCache]: Analyzing trace with hash -903377590, now seen corresponding path program 2 times [2022-12-14 10:46:36,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:46:36,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847193682] [2022-12-14 10:46:36,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:46:36,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:46:36,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:46:36,389 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 10:46:36,390 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:46:36,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847193682] [2022-12-14 10:46:36,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847193682] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:46:36,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502814873] [2022-12-14 10:46:36,390 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 10:46:36,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:46:36,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:46:36,391 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:46:36,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-14 10:46:36,463 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-14 10:46:36,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 10:46:36,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 10:46:36,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:46:36,480 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 10:46:36,480 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:46:36,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502814873] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:46:36,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 10:46:36,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2022-12-14 10:46:36,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627676182] [2022-12-14 10:46:36,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:46:36,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:46:36,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:46:36,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:46:36,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-14 10:46:36,481 INFO L87 Difference]: Start difference. First operand 103246 states and 642389 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2022-12-14 10:46:37,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:46:37,502 INFO L93 Difference]: Finished difference Result 86958 states and 533792 transitions. [2022-12-14 10:46:37,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:46:37,503 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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 16 [2022-12-14 10:46:37,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:46:38,079 INFO L225 Difference]: With dead ends: 86958 [2022-12-14 10:46:38,080 INFO L226 Difference]: Without dead ends: 79928 [2022-12-14 10:46:38,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-14 10:46:38,080 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 23 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:46:38,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 4 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:46:38,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79928 states. [2022-12-14 10:46:39,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79928 to 18144. [2022-12-14 10:46:39,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18144 states, 18129 states have (on average 4.888300512990237) internal successors, (88620), 18143 states have internal predecessors, (88620), 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) [2022-12-14 10:46:39,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18144 states to 18144 states and 88620 transitions. [2022-12-14 10:46:39,516 INFO L78 Accepts]: Start accepts. Automaton has 18144 states and 88620 transitions. Word has length 16 [2022-12-14 10:46:39,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:46:39,516 INFO L495 AbstractCegarLoop]: Abstraction has 18144 states and 88620 transitions. [2022-12-14 10:46:39,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2022-12-14 10:46:39,517 INFO L276 IsEmpty]: Start isEmpty. Operand 18144 states and 88620 transitions. [2022-12-14 10:46:39,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 10:46:39,523 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:46:39,523 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:46:39,527 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-14 10:46:39,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:46:39,724 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-12-14 10:46:39,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:46:39,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1806613477, now seen corresponding path program 3 times [2022-12-14 10:46:39,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:46:39,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535636570] [2022-12-14 10:46:39,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:46:39,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:46:39,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:46:39,858 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:46:39,859 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:46:39,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535636570] [2022-12-14 10:46:39,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535636570] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:46:39,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211858924] [2022-12-14 10:46:39,859 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 10:46:39,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:46:39,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:46:39,860 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:46:39,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-14 10:46:39,925 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 10:46:39,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 10:46:39,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-14 10:46:39,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:46:39,951 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:46:39,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:46:40,078 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:46:40,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211858924] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:46:40,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [551515003] [2022-12-14 10:46:40,078 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:337) 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) [2022-12-14 10:46:40,078 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:46:40,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-12-14 10:46:40,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426860723] [2022-12-14 10:46:40,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 10:46:40,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-14 10:46:40,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:46:40,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-14 10:46:40,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-12-14 10:46:40,079 INFO L87 Difference]: Start difference. First operand 18144 states and 88620 transitions. Second operand has 25 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 24 states have internal predecessors, (44), 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) [2022-12-14 10:46:41,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:46:41,138 INFO L93 Difference]: Finished difference Result 67222 states and 327692 transitions. [2022-12-14 10:46:41,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-14 10:46:41,138 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 24 states have internal predecessors, (44), 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 18 [2022-12-14 10:46:41,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:46:41,409 INFO L225 Difference]: With dead ends: 67222 [2022-12-14 10:46:41,409 INFO L226 Difference]: Without dead ends: 63086 [2022-12-14 10:46:41,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-12-14 10:46:41,410 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 1170 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1170 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 10:46:41,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1170 Valid, 70 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 10:46:41,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63086 states. [2022-12-14 10:46:42,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63086 to 33264. [2022-12-14 10:46:42,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33264 states, 33249 states have (on average 4.97229991879455) internal successors, (165324), 33263 states have internal predecessors, (165324), 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) [2022-12-14 10:46:42,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33264 states to 33264 states and 165324 transitions. [2022-12-14 10:46:42,508 INFO L78 Accepts]: Start accepts. Automaton has 33264 states and 165324 transitions. Word has length 18 [2022-12-14 10:46:42,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:46:42,508 INFO L495 AbstractCegarLoop]: Abstraction has 33264 states and 165324 transitions. [2022-12-14 10:46:42,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 24 states have internal predecessors, (44), 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) [2022-12-14 10:46:42,508 INFO L276 IsEmpty]: Start isEmpty. Operand 33264 states and 165324 transitions. [2022-12-14 10:46:42,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-12-14 10:46:42,527 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:46:42,527 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1] [2022-12-14 10:46:42,531 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-14 10:46:42,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-12-14 10:46:42,729 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-12-14 10:46:42,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:46:42,730 INFO L85 PathProgramCache]: Analyzing trace with hash -458873462, now seen corresponding path program 4 times [2022-12-14 10:46:42,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:46:42,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869824183] [2022-12-14 10:46:42,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:46:42,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:46:42,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:46:43,076 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:46:43,076 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:46:43,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869824183] [2022-12-14 10:46:43,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869824183] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:46:43,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943851592] [2022-12-14 10:46:43,076 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 10:46:43,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:46:43,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:46:43,077 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:46:43,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-14 10:46:43,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:46:43,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-14 10:46:43,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:46:43,193 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:46:43,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:46:43,617 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:46:43,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943851592] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:46:43,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [972351044] [2022-12-14 10:46:43,617 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:337) 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) [2022-12-14 10:46:43,617 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:46:43,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 47 [2022-12-14 10:46:43,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246005538] [2022-12-14 10:46:43,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 10:46:43,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-12-14 10:46:43,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:46:43,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-12-14 10:46:43,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-12-14 10:46:43,620 INFO L87 Difference]: Start difference. First operand 33264 states and 165324 transitions. Second operand has 49 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 48 states have internal predecessors, (56), 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) [2022-12-14 10:46:47,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:46:47,340 INFO L93 Difference]: Finished difference Result 207778 states and 1015422 transitions. [2022-12-14 10:46:47,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-14 10:46:47,341 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 48 states have internal predecessors, (56), 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 26 [2022-12-14 10:46:47,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:46:48,458 INFO L225 Difference]: With dead ends: 207778 [2022-12-14 10:46:48,459 INFO L226 Difference]: Without dead ends: 199098 [2022-12-14 10:46:48,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-12-14 10:46:48,460 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 4872 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 1111 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4872 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 1338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 1111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-14 10:46:48,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4872 Valid, 145 Invalid, 1338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 1111 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-14 10:46:48,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199098 states. [2022-12-14 10:46:51,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199098 to 63048. [2022-12-14 10:46:51,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63048 states, 63033 states have (on average 5.028794441007092) internal successors, (316980), 63047 states have internal predecessors, (316980), 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) [2022-12-14 10:46:51,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63048 states to 63048 states and 316980 transitions. [2022-12-14 10:46:51,740 INFO L78 Accepts]: Start accepts. Automaton has 63048 states and 316980 transitions. Word has length 26 [2022-12-14 10:46:51,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:46:51,740 INFO L495 AbstractCegarLoop]: Abstraction has 63048 states and 316980 transitions. [2022-12-14 10:46:51,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 48 states have internal predecessors, (56), 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) [2022-12-14 10:46:51,740 INFO L276 IsEmpty]: Start isEmpty. Operand 63048 states and 316980 transitions. [2022-12-14 10:46:51,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-12-14 10:46:51,773 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:46:51,773 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:46:51,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-12-14 10:46:51,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:46:51,975 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-12-14 10:46:51,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:46:51,976 INFO L85 PathProgramCache]: Analyzing trace with hash -616244443, now seen corresponding path program 4 times [2022-12-14 10:46:51,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:46:51,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185268823] [2022-12-14 10:46:51,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:46:51,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:46:51,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:46:52,264 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:46:52,264 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:46:52,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185268823] [2022-12-14 10:46:52,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185268823] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:46:52,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349432808] [2022-12-14 10:46:52,264 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 10:46:52,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:46:52,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:46:52,265 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:46:52,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-14 10:46:52,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:46:52,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-14 10:46:52,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:46:52,569 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:46:52,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:46:53,033 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:46:53,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349432808] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:46:53,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [921905300] [2022-12-14 10:46:53,034 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:337) 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) [2022-12-14 10:46:53,034 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:46:53,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 47 [2022-12-14 10:46:53,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968776106] [2022-12-14 10:46:53,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 10:46:53,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-12-14 10:46:53,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:46:53,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-12-14 10:46:53,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-12-14 10:46:53,037 INFO L87 Difference]: Start difference. First operand 63048 states and 316980 transitions. Second operand has 49 states, 48 states have (on average 1.4166666666666667) internal successors, (68), 48 states have internal predecessors, (68), 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) [2022-12-14 10:46:57,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:46:57,679 INFO L93 Difference]: Finished difference Result 326818 states and 1660712 transitions. [2022-12-14 10:46:57,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-14 10:46:57,680 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 1.4166666666666667) internal successors, (68), 48 states have internal predecessors, (68), 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 30 [2022-12-14 10:46:57,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:46:59,757 INFO L225 Difference]: With dead ends: 326818 [2022-12-14 10:46:59,757 INFO L226 Difference]: Without dead ends: 310466 [2022-12-14 10:46:59,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-12-14 10:46:59,758 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 3290 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3290 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 1270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:46:59,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3290 Valid, 142 Invalid, 1270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 1075 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-14 10:47:00,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310466 states. [2022-12-14 10:47:05,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310466 to 120360. [2022-12-14 10:47:05,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120360 states, 120345 states have (on average 5.0765050479870375) internal successors, (610932), 120359 states have internal predecessors, (610932), 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) [2022-12-14 10:47:05,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120360 states to 120360 states and 610932 transitions. [2022-12-14 10:47:05,954 INFO L78 Accepts]: Start accepts. Automaton has 120360 states and 610932 transitions. Word has length 30 [2022-12-14 10:47:05,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:47:05,955 INFO L495 AbstractCegarLoop]: Abstraction has 120360 states and 610932 transitions. [2022-12-14 10:47:05,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 1.4166666666666667) internal successors, (68), 48 states have internal predecessors, (68), 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) [2022-12-14 10:47:05,955 INFO L276 IsEmpty]: Start isEmpty. Operand 120360 states and 610932 transitions. [2022-12-14 10:47:06,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-12-14 10:47:06,095 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:47:06,095 INFO L195 NwaCegarLoop]: trace histogram [46, 1, 1, 1, 1] [2022-12-14 10:47:06,100 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-14 10:47:06,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-12-14 10:47:06,297 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-12-14 10:47:06,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:47:06,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1818642442, now seen corresponding path program 5 times [2022-12-14 10:47:06,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:47:06,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582013616] [2022-12-14 10:47:06,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:47:06,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:47:06,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:47:07,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:47:07,338 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:47:07,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582013616] [2022-12-14 10:47:07,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582013616] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:47:07,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104977898] [2022-12-14 10:47:07,339 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 10:47:07,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:47:07,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:47:07,339 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:47:07,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be93a3-0436-40cd-b8ca-04c8f473863b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-14 10:47:07,498 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2022-12-14 10:47:07,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 10:47:07,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 49 conjunts are in the unsatisfiable core [2022-12-14 10:47:07,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:47:07,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:47:07,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:47:09,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:47:09,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104977898] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:47:09,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1540399692] [2022-12-14 10:47:09,286 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:337) 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) [2022-12-14 10:47:09,286 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:47:09,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 95 [2022-12-14 10:47:09,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767695324] [2022-12-14 10:47:09,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 10:47:09,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2022-12-14 10:47:09,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:47:09,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2022-12-14 10:47:09,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2022-12-14 10:47:09,293 INFO L87 Difference]: Start difference. First operand 120360 states and 610932 transitions. Second operand has 97 states, 96 states have (on average 1.0833333333333333) internal successors, (104), 96 states have internal predecessors, (104), 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) [2022-12-14 10:47:29,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:47:29,780 INFO L93 Difference]: Finished difference Result 1113802 states and 5707758 transitions. [2022-12-14 10:47:29,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-12-14 10:47:29,781 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 96 states have (on average 1.0833333333333333) internal successors, (104), 96 states have internal predecessors, (104), 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 50 [2022-12-14 10:47:29,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:47:39,413 INFO L225 Difference]: With dead ends: 1113802 [2022-12-14 10:47:39,413 INFO L226 Difference]: Without dead ends: 1079154 [2022-12-14 10:47:39,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2022-12-14 10:47:39,416 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 8088 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 2224 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8088 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 2610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 2224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-12-14 10:47:39,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8088 Valid, 289 Invalid, 2610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 2224 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-12-14 10:47:41,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079154 states.