./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9127ad8-c7f7-40d3-b78a-7c8d9fb1661d/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9127ad8-c7f7-40d3-b78a-7c8d9fb1661d/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_f9127ad8-c7f7-40d3-b78a-7c8d9fb1661d/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9127ad8-c7f7-40d3-b78a-7c8d9fb1661d/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9127ad8-c7f7-40d3-b78a-7c8d9fb1661d/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_f9127ad8-c7f7-40d3-b78a-7c8d9fb1661d/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 084d7ddce3c53222c6533ccae99969e854061e3b422eaf94457157515e3bd009 --- 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 06:49:43,860 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 06:49:43,862 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 06:49:43,880 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 06:49:43,881 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 06:49:43,882 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 06:49:43,883 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 06:49:43,884 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 06:49:43,886 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 06:49:43,886 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 06:49:43,887 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 06:49:43,888 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 06:49:43,889 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 06:49:43,890 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 06:49:43,891 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 06:49:43,892 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 06:49:43,893 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 06:49:43,894 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 06:49:43,895 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 06:49:43,897 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 06:49:43,898 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 06:49:43,899 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 06:49:43,901 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 06:49:43,901 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 06:49:43,905 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 06:49:43,905 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 06:49:43,905 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 06:49:43,906 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 06:49:43,907 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 06:49:43,907 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 06:49:43,908 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 06:49:43,908 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 06:49:43,909 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 06:49:43,910 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 06:49:43,911 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 06:49:43,911 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 06:49:43,912 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 06:49:43,912 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 06:49:43,912 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 06:49:43,913 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 06:49:43,913 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 06:49:43,914 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9127ad8-c7f7-40d3-b78a-7c8d9fb1661d/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-12-14 06:49:43,935 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 06:49:43,935 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 06:49:43,935 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 06:49:43,936 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 06:49:43,936 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 06:49:43,937 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 06:49:43,937 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 06:49:43,937 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 06:49:43,937 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 06:49:43,937 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 06:49:43,937 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 06:49:43,938 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 06:49:43,938 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 06:49:43,938 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 06:49:43,938 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 06:49:43,938 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 06:49:43,939 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 06:49:43,939 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 06:49:43,939 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 06:49:43,940 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 06:49:43,940 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 06:49:43,940 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 06:49:43,940 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 06:49:43,940 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 06:49:43,941 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 06:49:43,941 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 06:49:43,941 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 06:49:43,941 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 06:49:43,941 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 06:49:43,941 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 06:49:43,942 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 06:49:43,942 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 06:49:43,942 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 06:49:43,942 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 06:49:43,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:49:43,942 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 06:49:43,943 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 06:49:43,943 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 06:49:43,943 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 06:49:43,943 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 06:49:43,943 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 06:49:43,943 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 06:49:43,944 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 06:49:43,944 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_f9127ad8-c7f7-40d3-b78a-7c8d9fb1661d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9127ad8-c7f7-40d3-b78a-7c8d9fb1661d/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 084d7ddce3c53222c6533ccae99969e854061e3b422eaf94457157515e3bd009 [2022-12-14 06:49:44,113 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 06:49:44,133 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 06:49:44,136 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 06:49:44,137 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 06:49:44,137 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 06:49:44,138 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9127ad8-c7f7-40d3-b78a-7c8d9fb1661d/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c [2022-12-14 06:49:46,679 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 06:49:46,858 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 06:49:46,858 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9127ad8-c7f7-40d3-b78a-7c8d9fb1661d/sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c [2022-12-14 06:49:46,863 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9127ad8-c7f7-40d3-b78a-7c8d9fb1661d/bin/utaipan-gh47qXpMRh/data/1af9ffc6c/21242510c0874faca043ab76a9dbd25d/FLAGef41e93c7 [2022-12-14 06:49:47,256 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9127ad8-c7f7-40d3-b78a-7c8d9fb1661d/bin/utaipan-gh47qXpMRh/data/1af9ffc6c/21242510c0874faca043ab76a9dbd25d [2022-12-14 06:49:47,258 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 06:49:47,259 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 06:49:47,260 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 06:49:47,260 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 06:49:47,264 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 06:49:47,264 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:49:47" (1/1) ... [2022-12-14 06:49:47,265 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@709eea2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:49:47, skipping insertion in model container [2022-12-14 06:49:47,266 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:49:47" (1/1) ... [2022-12-14 06:49:47,271 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 06:49:47,289 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 06:49:47,394 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:49:47,397 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:49:47,397 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:49:47,398 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:49:47,398 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:49:47,398 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:49:47,399 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:49:47,399 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:49:47,399 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:49:47,399 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:49:47,401 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:49:47,401 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:49:47,401 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:49:47,402 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:49:47,402 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:49:47,403 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:49:47,404 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:49:47,404 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:49:47,405 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:49:47,406 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:49:47,406 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:49:47,406 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:49:47,407 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:49:47,407 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:49:47,408 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:49:47,408 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:49:47,409 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:49:47,410 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:49:47,410 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:49:47,410 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:49:47,411 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:49:47,411 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:49:47,411 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:49:47,412 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:49:47,412 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:49:47,413 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:49:47,413 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:49:47,413 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:49:47,413 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:49:47,414 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:49:47,414 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:49:47,414 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:49:47,422 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_f9127ad8-c7f7-40d3-b78a-7c8d9fb1661d/sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c[3963,3976] [2022-12-14 06:49:47,424 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:49:47,432 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 06:49:47,444 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:49:47,445 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:49:47,445 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:49:47,445 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:49:47,446 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:49:47,446 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:49:47,446 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:49:47,447 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:49:47,447 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:49:47,447 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:49:47,448 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:49:47,448 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:49:47,449 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:49:47,449 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:49:47,449 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:49:47,450 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:49:47,450 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:49:47,450 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:49:47,451 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:49:47,451 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:49:47,452 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:49:47,452 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:49:47,452 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:49:47,453 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:49:47,453 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:49:47,453 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:49:47,454 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:49:47,454 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:49:47,455 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:49:47,455 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:49:47,455 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:49:47,456 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:49:47,456 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:49:47,456 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:49:47,457 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:49:47,457 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:49:47,457 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:49:47,458 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:49:47,458 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:49:47,458 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:49:47,459 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:49:47,459 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:49:47,466 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_f9127ad8-c7f7-40d3-b78a-7c8d9fb1661d/sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c[3963,3976] [2022-12-14 06:49:47,467 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:49:47,482 INFO L208 MainTranslator]: Completed translation [2022-12-14 06:49:47,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:49:47 WrapperNode [2022-12-14 06:49:47,482 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 06:49:47,483 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 06:49:47,483 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 06:49:47,483 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 06:49:47,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:49:47" (1/1) ... [2022-12-14 06:49:47,499 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:49:47" (1/1) ... [2022-12-14 06:49:47,522 INFO L138 Inliner]: procedures = 24, calls = 85, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 258 [2022-12-14 06:49:47,522 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 06:49:47,522 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 06:49:47,522 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 06:49:47,522 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 06:49:47,529 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:49:47" (1/1) ... [2022-12-14 06:49:47,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:49:47" (1/1) ... [2022-12-14 06:49:47,532 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:49:47" (1/1) ... [2022-12-14 06:49:47,533 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:49:47" (1/1) ... [2022-12-14 06:49:47,538 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:49:47" (1/1) ... [2022-12-14 06:49:47,540 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:49:47" (1/1) ... [2022-12-14 06:49:47,542 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:49:47" (1/1) ... [2022-12-14 06:49:47,543 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:49:47" (1/1) ... [2022-12-14 06:49:47,546 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 06:49:47,547 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 06:49:47,547 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 06:49:47,547 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 06:49:47,547 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:49:47" (1/1) ... [2022-12-14 06:49:47,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:49:47,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9127ad8-c7f7-40d3-b78a-7c8d9fb1661d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:49:47,570 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9127ad8-c7f7-40d3-b78a-7c8d9fb1661d/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 06:49:47,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9127ad8-c7f7-40d3-b78a-7c8d9fb1661d/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 06:49:47,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 06:49:47,597 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-14 06:49:47,597 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-14 06:49:47,597 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-14 06:49:47,597 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-14 06:49:47,597 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-14 06:49:47,597 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-14 06:49:47,597 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-14 06:49:47,598 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-14 06:49:47,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 06:49:47,598 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-12-14 06:49:47,598 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-12-14 06:49:47,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 06:49:47,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 06:49:47,598 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-14 06:49:47,598 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-14 06:49:47,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 06:49:47,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 06:49:47,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 06:49:47,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 06:49:47,600 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 06:49:47,685 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 06:49:47,687 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 06:49:48,015 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 06:49:48,123 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 06:49:48,123 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 06:49:48,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:49:48 BoogieIcfgContainer [2022-12-14 06:49:48,126 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 06:49:48,128 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 06:49:48,129 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 06:49:48,132 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 06:49:48,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 06:49:47" (1/3) ... [2022-12-14 06:49:48,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a0e041b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:49:48, skipping insertion in model container [2022-12-14 06:49:48,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:49:47" (2/3) ... [2022-12-14 06:49:48,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a0e041b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:49:48, skipping insertion in model container [2022-12-14 06:49:48,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:49:48" (3/3) ... [2022-12-14 06:49:48,135 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-5.wvr.c [2022-12-14 06:49:48,143 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-14 06:49:48,153 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 06:49:48,153 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2022-12-14 06:49:48,153 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-14 06:49:48,224 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2022-12-14 06:49:48,256 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 06:49:48,269 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 198 places, 184 transitions, 408 flow [2022-12-14 06:49:48,272 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 198 places, 184 transitions, 408 flow [2022-12-14 06:49:48,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 184 transitions, 408 flow [2022-12-14 06:49:48,337 INFO L130 PetriNetUnfolder]: 2/179 cut-off events. [2022-12-14 06:49:48,337 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-12-14 06:49:48,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 179 events. 2/179 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 132 event pairs, 0 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 136. Up to 2 conditions per place. [2022-12-14 06:49:48,344 INFO L119 LiptonReduction]: Number of co-enabled transitions 4234 [2022-12-14 06:49:54,468 INFO L134 LiptonReduction]: Checked pairs total: 18475 [2022-12-14 06:49:54,468 INFO L136 LiptonReduction]: Total number of compositions: 148 [2022-12-14 06:49:54,473 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 78 places, 62 transitions, 164 flow [2022-12-14 06:49:56,971 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 93610 states, 90486 states have (on average 4.946544216784917) internal successors, (447593), 93609 states have internal predecessors, (447593), 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 06:49:56,986 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 06:49:56,990 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;@1a9ad29c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 06:49:56,991 INFO L358 AbstractCegarLoop]: Starting to check reachability of 45 error locations. [2022-12-14 06:49:57,110 INFO L276 IsEmpty]: Start isEmpty. Operand has 93610 states, 90486 states have (on average 4.946544216784917) internal successors, (447593), 93609 states have internal predecessors, (447593), 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 06:49:57,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 06:49:57,114 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:49:57,115 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 06:49:57,115 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2022-12-14 06:49:57,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:49:57,119 INFO L85 PathProgramCache]: Analyzing trace with hash 804278, now seen corresponding path program 1 times [2022-12-14 06:49:57,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:49:57,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276835138] [2022-12-14 06:49:57,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:49:57,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:49:57,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:49:57,381 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 06:49:57,382 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:49:57,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276835138] [2022-12-14 06:49:57,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276835138] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:49:57,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:49:57,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 06:49:57,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036584264] [2022-12-14 06:49:57,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:49:57,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:49:57,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:49:57,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:49:57,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:49:57,537 INFO L87 Difference]: Start difference. First operand has 93610 states, 90486 states have (on average 4.946544216784917) internal successors, (447593), 93609 states have internal predecessors, (447593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:49:58,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:49:58,913 INFO L93 Difference]: Finished difference Result 92894 states and 443867 transitions. [2022-12-14 06:49:58,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:49:58,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-12-14 06:49:58,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:49:59,775 INFO L225 Difference]: With dead ends: 92894 [2022-12-14 06:49:59,775 INFO L226 Difference]: Without dead ends: 92894 [2022-12-14 06:49:59,776 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 06:49:59,779 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 9 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:49:59,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:49:59,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92894 states. [2022-12-14 06:50:02,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92894 to 92894. [2022-12-14 06:50:02,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92894 states, 89802 states have (on average 4.942729560588851) internal successors, (443867), 92893 states have internal predecessors, (443867), 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 06:50:03,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92894 states to 92894 states and 443867 transitions. [2022-12-14 06:50:03,452 INFO L78 Accepts]: Start accepts. Automaton has 92894 states and 443867 transitions. Word has length 3 [2022-12-14 06:50:03,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:50:03,452 INFO L495 AbstractCegarLoop]: Abstraction has 92894 states and 443867 transitions. [2022-12-14 06:50:03,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:50:03,453 INFO L276 IsEmpty]: Start isEmpty. Operand 92894 states and 443867 transitions. [2022-12-14 06:50:03,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 06:50:03,453 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:50:03,453 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 06:50:03,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 06:50:03,454 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2022-12-14 06:50:03,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:50:03,455 INFO L85 PathProgramCache]: Analyzing trace with hash 772935002, now seen corresponding path program 1 times [2022-12-14 06:50:03,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:50:03,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276506524] [2022-12-14 06:50:03,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:50:03,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:50:03,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:50:03,594 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 06:50:03,594 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:50:03,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276506524] [2022-12-14 06:50:03,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276506524] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:50:03,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:50:03,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:50:03,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576957083] [2022-12-14 06:50:03,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:50:03,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 06:50:03,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:50:03,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 06:50:03,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:50:03,598 INFO L87 Difference]: Start difference. First operand 92894 states and 443867 transitions. Second operand has 5 states, 4 states have (on average 1.25) 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 06:50:04,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:50:04,551 INFO L93 Difference]: Finished difference Result 61164 states and 294287 transitions. [2022-12-14 06:50:04,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 06:50:04,552 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) 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 06:50:04,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:50:05,041 INFO L225 Difference]: With dead ends: 61164 [2022-12-14 06:50:05,041 INFO L226 Difference]: Without dead ends: 61164 [2022-12-14 06:50:05,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-14 06:50:05,043 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 98 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 06:50:05,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 3 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 06:50:05,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61164 states. [2022-12-14 06:50:06,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61164 to 49692. [2022-12-14 06:50:06,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49692 states, 48701 states have (on average 4.770559126095973) internal successors, (232331), 49691 states have internal predecessors, (232331), 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 06:50:06,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49692 states to 49692 states and 232331 transitions. [2022-12-14 06:50:06,989 INFO L78 Accepts]: Start accepts. Automaton has 49692 states and 232331 transitions. Word has length 5 [2022-12-14 06:50:06,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:50:07,116 INFO L495 AbstractCegarLoop]: Abstraction has 49692 states and 232331 transitions. [2022-12-14 06:50:07,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) 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 06:50:07,117 INFO L276 IsEmpty]: Start isEmpty. Operand 49692 states and 232331 transitions. [2022-12-14 06:50:07,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 06:50:07,118 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:50:07,118 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 06:50:07,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 06:50:07,118 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2022-12-14 06:50:07,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:50:07,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1803338799, now seen corresponding path program 1 times [2022-12-14 06:50:07,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:50:07,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73674924] [2022-12-14 06:50:07,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:50:07,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:50:07,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:50:07,178 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 06:50:07,178 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:50:07,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73674924] [2022-12-14 06:50:07,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73674924] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:50:07,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:50:07,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 06:50:07,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820679841] [2022-12-14 06:50:07,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:50:07,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:50:07,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:50:07,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:50:07,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:50:07,180 INFO L87 Difference]: Start difference. First operand 49692 states and 232331 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:50:07,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:50:07,408 INFO L93 Difference]: Finished difference Result 24756 states and 112660 transitions. [2022-12-14 06:50:07,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:50:07,409 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-12-14 06:50:07,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:50:07,542 INFO L225 Difference]: With dead ends: 24756 [2022-12-14 06:50:07,543 INFO L226 Difference]: Without dead ends: 24756 [2022-12-14 06:50:07,543 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 06:50:07,544 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 39 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:50:07,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 1 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:50:07,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24756 states. [2022-12-14 06:50:08,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24756 to 24756. [2022-12-14 06:50:08,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24756 states, 24515 states have (on average 4.595553742606567) internal successors, (112660), 24755 states have internal predecessors, (112660), 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 06:50:08,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24756 states to 24756 states and 112660 transitions. [2022-12-14 06:50:08,278 INFO L78 Accepts]: Start accepts. Automaton has 24756 states and 112660 transitions. Word has length 6 [2022-12-14 06:50:08,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:50:08,279 INFO L495 AbstractCegarLoop]: Abstraction has 24756 states and 112660 transitions. [2022-12-14 06:50:08,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:50:08,279 INFO L276 IsEmpty]: Start isEmpty. Operand 24756 states and 112660 transitions. [2022-12-14 06:50:08,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 06:50:08,280 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:50:08,280 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 06:50:08,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 06:50:08,280 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2022-12-14 06:50:08,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:50:08,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1803338798, now seen corresponding path program 1 times [2022-12-14 06:50:08,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:50:08,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775768821] [2022-12-14 06:50:08,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:50:08,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:50:08,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:50:08,349 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 06:50:08,349 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:50:08,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775768821] [2022-12-14 06:50:08,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775768821] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:50:08,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:50:08,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 06:50:08,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300538741] [2022-12-14 06:50:08,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:50:08,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 06:50:08,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:50:08,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 06:50:08,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 06:50:08,351 INFO L87 Difference]: Start difference. First operand 24756 states and 112660 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:50:08,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:50:08,590 INFO L93 Difference]: Finished difference Result 23762 states and 107717 transitions. [2022-12-14 06:50:08,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 06:50:08,590 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-12-14 06:50:08,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:50:08,700 INFO L225 Difference]: With dead ends: 23762 [2022-12-14 06:50:08,700 INFO L226 Difference]: Without dead ends: 23762 [2022-12-14 06:50:08,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 06:50:08,701 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 34 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:50:08,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:50:08,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23762 states. [2022-12-14 06:50:09,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23762 to 23762. [2022-12-14 06:50:09,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23762 states, 23531 states have (on average 4.577663507713229) internal successors, (107717), 23761 states have internal predecessors, (107717), 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 06:50:09,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23762 states to 23762 states and 107717 transitions. [2022-12-14 06:50:09,507 INFO L78 Accepts]: Start accepts. Automaton has 23762 states and 107717 transitions. Word has length 6 [2022-12-14 06:50:09,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:50:09,508 INFO L495 AbstractCegarLoop]: Abstraction has 23762 states and 107717 transitions. [2022-12-14 06:50:09,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:50:09,508 INFO L276 IsEmpty]: Start isEmpty. Operand 23762 states and 107717 transitions. [2022-12-14 06:50:09,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 06:50:09,508 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:50:09,509 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 06:50:09,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 06:50:09,509 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2022-12-14 06:50:09,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:50:09,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1808820584, now seen corresponding path program 1 times [2022-12-14 06:50:09,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:50:09,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708039934] [2022-12-14 06:50:09,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:50:09,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:50:09,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:50:09,594 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 06:50:09,594 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:50:09,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708039934] [2022-12-14 06:50:09,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708039934] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:50:09,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:50:09,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 06:50:09,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776367583] [2022-12-14 06:50:09,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:50:09,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:50:09,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:50:09,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:50:09,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:50:09,596 INFO L87 Difference]: Start difference. First operand 23762 states and 107717 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:50:09,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:50:09,824 INFO L93 Difference]: Finished difference Result 18028 states and 76812 transitions. [2022-12-14 06:50:09,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:50:09,825 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-12-14 06:50:09,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:50:09,917 INFO L225 Difference]: With dead ends: 18028 [2022-12-14 06:50:09,917 INFO L226 Difference]: Without dead ends: 18026 [2022-12-14 06:50:09,918 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 06:50:09,918 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 22 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:50:09,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 2 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:50:09,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18026 states. [2022-12-14 06:50:10,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18026 to 18026. [2022-12-14 06:50:10,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18026 states, 17796 states have (on average 4.315632726455383) internal successors, (76801), 18025 states have internal predecessors, (76801), 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 06:50:10,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18026 states to 18026 states and 76801 transitions. [2022-12-14 06:50:10,492 INFO L78 Accepts]: Start accepts. Automaton has 18026 states and 76801 transitions. Word has length 6 [2022-12-14 06:50:10,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:50:10,492 INFO L495 AbstractCegarLoop]: Abstraction has 18026 states and 76801 transitions. [2022-12-14 06:50:10,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:50:10,492 INFO L276 IsEmpty]: Start isEmpty. Operand 18026 states and 76801 transitions. [2022-12-14 06:50:10,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 06:50:10,494 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:50:10,494 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:50:10,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 06:50:10,494 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2022-12-14 06:50:10,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:50:10,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1654118230, now seen corresponding path program 1 times [2022-12-14 06:50:10,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:50:10,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257637110] [2022-12-14 06:50:10,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:50:10,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:50:10,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:50:10,664 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 06:50:10,664 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:50:10,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257637110] [2022-12-14 06:50:10,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257637110] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:50:10,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:50:10,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:50:10,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622958260] [2022-12-14 06:50:10,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:50:10,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 06:50:10,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:50:10,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 06:50:10,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:50:10,666 INFO L87 Difference]: Start difference. First operand 18026 states and 76801 transitions. Second operand has 5 states, 4 states have (on average 2.25) 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 06:50:10,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:50:10,863 INFO L93 Difference]: Finished difference Result 15552 states and 65259 transitions. [2022-12-14 06:50:10,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 06:50:10,863 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) 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 9 [2022-12-14 06:50:10,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:50:10,937 INFO L225 Difference]: With dead ends: 15552 [2022-12-14 06:50:10,937 INFO L226 Difference]: Without dead ends: 15552 [2022-12-14 06:50:10,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:50:10,938 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 86 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:50:10,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 4 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:50:10,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15552 states. [2022-12-14 06:50:11,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15552 to 15552. [2022-12-14 06:50:11,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15552 states, 15362 states have (on average 4.248079677125374) internal successors, (65259), 15551 states have internal predecessors, (65259), 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 06:50:11,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15552 states to 15552 states and 65259 transitions. [2022-12-14 06:50:11,294 INFO L78 Accepts]: Start accepts. Automaton has 15552 states and 65259 transitions. Word has length 9 [2022-12-14 06:50:11,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:50:11,295 INFO L495 AbstractCegarLoop]: Abstraction has 15552 states and 65259 transitions. [2022-12-14 06:50:11,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) 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 06:50:11,295 INFO L276 IsEmpty]: Start isEmpty. Operand 15552 states and 65259 transitions. [2022-12-14 06:50:11,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 06:50:11,296 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:50:11,296 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:50:11,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 06:50:11,296 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2022-12-14 06:50:11,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:50:11,297 INFO L85 PathProgramCache]: Analyzing trace with hash -245003808, now seen corresponding path program 1 times [2022-12-14 06:50:11,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:50:11,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239265695] [2022-12-14 06:50:11,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:50:11,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:50:11,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:50:11,391 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 06:50:11,392 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:50:11,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239265695] [2022-12-14 06:50:11,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239265695] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:50:11,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:50:11,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:50:11,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147627742] [2022-12-14 06:50:11,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:50:11,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 06:50:11,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:50:11,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 06:50:11,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:50:11,393 INFO L87 Difference]: Start difference. First operand 15552 states and 65259 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 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 06:50:11,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:50:11,581 INFO L93 Difference]: Finished difference Result 10452 states and 42282 transitions. [2022-12-14 06:50:11,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 06:50:11,581 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 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 10 [2022-12-14 06:50:11,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:50:11,631 INFO L225 Difference]: With dead ends: 10452 [2022-12-14 06:50:11,632 INFO L226 Difference]: Without dead ends: 10428 [2022-12-14 06:50:11,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:50:11,632 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 92 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:50:11,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 3 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:50:11,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10428 states. [2022-12-14 06:50:11,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10428 to 10428. [2022-12-14 06:50:11,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10428 states, 10243 states have (on average 4.1151029971687985) internal successors, (42151), 10427 states have internal predecessors, (42151), 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 06:50:11,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10428 states to 10428 states and 42151 transitions. [2022-12-14 06:50:11,943 INFO L78 Accepts]: Start accepts. Automaton has 10428 states and 42151 transitions. Word has length 10 [2022-12-14 06:50:11,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:50:11,943 INFO L495 AbstractCegarLoop]: Abstraction has 10428 states and 42151 transitions. [2022-12-14 06:50:11,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 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 06:50:11,943 INFO L276 IsEmpty]: Start isEmpty. Operand 10428 states and 42151 transitions. [2022-12-14 06:50:11,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 06:50:11,945 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:50:11,945 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:50:11,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 06:50:11,945 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2022-12-14 06:50:11,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:50:11,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1670086161, now seen corresponding path program 1 times [2022-12-14 06:50:11,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:50:11,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755948143] [2022-12-14 06:50:11,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:50:11,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:50:11,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:50:12,022 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 06:50:12,022 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:50:12,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755948143] [2022-12-14 06:50:12,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755948143] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:50:12,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:50:12,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 06:50:12,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967975647] [2022-12-14 06:50:12,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:50:12,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 06:50:12,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:50:12,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 06:50:12,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-14 06:50:12,024 INFO L87 Difference]: Start difference. First operand 10428 states and 42151 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 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 06:50:12,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:50:12,221 INFO L93 Difference]: Finished difference Result 7536 states and 29515 transitions. [2022-12-14 06:50:12,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 06:50:12,221 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 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 06:50:12,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:50:12,242 INFO L225 Difference]: With dead ends: 7536 [2022-12-14 06:50:12,242 INFO L226 Difference]: Without dead ends: 7536 [2022-12-14 06:50:12,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-14 06:50:12,243 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 74 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:50:12,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 5 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:50:12,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7536 states. [2022-12-14 06:50:12,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7536 to 7536. [2022-12-14 06:50:12,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7536 states, 7431 states have (on average 3.971874579464406) internal successors, (29515), 7535 states have internal predecessors, (29515), 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 06:50:12,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7536 states to 7536 states and 29515 transitions. [2022-12-14 06:50:12,397 INFO L78 Accepts]: Start accepts. Automaton has 7536 states and 29515 transitions. Word has length 12 [2022-12-14 06:50:12,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:50:12,398 INFO L495 AbstractCegarLoop]: Abstraction has 7536 states and 29515 transitions. [2022-12-14 06:50:12,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 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 06:50:12,398 INFO L276 IsEmpty]: Start isEmpty. Operand 7536 states and 29515 transitions. [2022-12-14 06:50:12,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 06:50:12,401 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:50:12,401 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:50:12,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 06:50:12,401 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2022-12-14 06:50:12,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:50:12,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1398341798, now seen corresponding path program 1 times [2022-12-14 06:50:12,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:50:12,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542582786] [2022-12-14 06:50:12,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:50:12,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:50:12,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:50:12,515 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 06:50:12,515 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:50:12,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542582786] [2022-12-14 06:50:12,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542582786] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:50:12,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:50:12,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 06:50:12,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566549234] [2022-12-14 06:50:12,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:50:12,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 06:50:12,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:50:12,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 06:50:12,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-12-14 06:50:12,517 INFO L87 Difference]: Start difference. First operand 7536 states and 29515 transitions. Second operand has 8 states, 7 states have (on average 2.0) 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 06:50:12,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:50:12,860 INFO L93 Difference]: Finished difference Result 19718 states and 73866 transitions. [2022-12-14 06:50:12,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 06:50:12,861 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) 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 14 [2022-12-14 06:50:12,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:50:12,923 INFO L225 Difference]: With dead ends: 19718 [2022-12-14 06:50:12,923 INFO L226 Difference]: Without dead ends: 19586 [2022-12-14 06:50:12,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-12-14 06:50:12,924 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 205 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 06:50:12,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 10 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 06:50:12,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19586 states. [2022-12-14 06:50:13,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19586 to 14248. [2022-12-14 06:50:13,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14248 states, 13953 states have (on average 3.9192288396760553) internal successors, (54685), 14247 states have internal predecessors, (54685), 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 06:50:13,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14248 states to 14248 states and 54685 transitions. [2022-12-14 06:50:13,340 INFO L78 Accepts]: Start accepts. Automaton has 14248 states and 54685 transitions. Word has length 14 [2022-12-14 06:50:13,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:50:13,340 INFO L495 AbstractCegarLoop]: Abstraction has 14248 states and 54685 transitions. [2022-12-14 06:50:13,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) 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 06:50:13,340 INFO L276 IsEmpty]: Start isEmpty. Operand 14248 states and 54685 transitions. [2022-12-14 06:50:13,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 06:50:13,344 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:50:13,344 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:50:13,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 06:50:13,344 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2022-12-14 06:50:13,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:50:13,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1311536300, now seen corresponding path program 1 times [2022-12-14 06:50:13,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:50:13,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582228571] [2022-12-14 06:50:13,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:50:13,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:50:13,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:50:13,440 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 06:50:13,440 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:50:13,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582228571] [2022-12-14 06:50:13,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582228571] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:50:13,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:50:13,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 06:50:13,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256419720] [2022-12-14 06:50:13,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:50:13,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 06:50:13,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:50:13,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 06:50:13,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-14 06:50:13,442 INFO L87 Difference]: Start difference. First operand 14248 states and 54685 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 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 06:50:13,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:50:13,626 INFO L93 Difference]: Finished difference Result 10402 states and 41939 transitions. [2022-12-14 06:50:13,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 06:50:13,626 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 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 06:50:13,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:50:13,654 INFO L225 Difference]: With dead ends: 10402 [2022-12-14 06:50:13,654 INFO L226 Difference]: Without dead ends: 10288 [2022-12-14 06:50:13,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-14 06:50:13,654 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 163 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:50:13,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 4 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:50:13,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10288 states. [2022-12-14 06:50:13,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10288 to 8164. [2022-12-14 06:50:13,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8164 states, 8029 states have (on average 4.020301407398182) internal successors, (32279), 8163 states have internal predecessors, (32279), 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 06:50:13,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8164 states to 8164 states and 32279 transitions. [2022-12-14 06:50:13,824 INFO L78 Accepts]: Start accepts. Automaton has 8164 states and 32279 transitions. Word has length 14 [2022-12-14 06:50:13,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:50:13,824 INFO L495 AbstractCegarLoop]: Abstraction has 8164 states and 32279 transitions. [2022-12-14 06:50:13,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 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 06:50:13,825 INFO L276 IsEmpty]: Start isEmpty. Operand 8164 states and 32279 transitions. [2022-12-14 06:50:13,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 06:50:13,829 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:50:13,829 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:50:13,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 06:50:13,830 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2022-12-14 06:50:13,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:50:13,830 INFO L85 PathProgramCache]: Analyzing trace with hash -487559903, now seen corresponding path program 1 times [2022-12-14 06:50:13,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:50:13,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707745527] [2022-12-14 06:50:13,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:50:13,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:50:13,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:50:13,908 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 06:50:13,908 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:50:13,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707745527] [2022-12-14 06:50:13,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707745527] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:50:13,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:50:13,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 06:50:13,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726485831] [2022-12-14 06:50:13,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:50:13,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 06:50:13,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:50:13,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 06:50:13,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-14 06:50:13,910 INFO L87 Difference]: Start difference. First operand 8164 states and 32279 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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 06:50:14,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:50:14,122 INFO L93 Difference]: Finished difference Result 6606 states and 25576 transitions. [2022-12-14 06:50:14,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 06:50:14,123 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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 15 [2022-12-14 06:50:14,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:50:14,141 INFO L225 Difference]: With dead ends: 6606 [2022-12-14 06:50:14,141 INFO L226 Difference]: Without dead ends: 6418 [2022-12-14 06:50:14,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-14 06:50:14,141 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 131 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 06:50:14,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 6 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 06:50:14,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6418 states. [2022-12-14 06:50:14,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6418 to 6418. [2022-12-14 06:50:14,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6418 states, 6383 states have (on average 3.8818737270875765) internal successors, (24778), 6417 states have internal predecessors, (24778), 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 06:50:14,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6418 states to 6418 states and 24778 transitions. [2022-12-14 06:50:14,273 INFO L78 Accepts]: Start accepts. Automaton has 6418 states and 24778 transitions. Word has length 15 [2022-12-14 06:50:14,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:50:14,274 INFO L495 AbstractCegarLoop]: Abstraction has 6418 states and 24778 transitions. [2022-12-14 06:50:14,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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 06:50:14,274 INFO L276 IsEmpty]: Start isEmpty. Operand 6418 states and 24778 transitions. [2022-12-14 06:50:14,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 06:50:14,284 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:50:14,284 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:50:14,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 06:50:14,284 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2022-12-14 06:50:14,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:50:14,284 INFO L85 PathProgramCache]: Analyzing trace with hash 790340350, now seen corresponding path program 1 times [2022-12-14 06:50:14,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:50:14,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857848401] [2022-12-14 06:50:14,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:50:14,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:50:14,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:50:14,452 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 06:50:14,452 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:50:14,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857848401] [2022-12-14 06:50:14,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857848401] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:50:14,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:50:14,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 06:50:14,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58161141] [2022-12-14 06:50:14,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:50:14,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 06:50:14,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:50:14,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 06:50:14,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-12-14 06:50:14,454 INFO L87 Difference]: Start difference. First operand 6418 states and 24778 transitions. Second operand has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 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 06:50:14,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:50:14,861 INFO L93 Difference]: Finished difference Result 12760 states and 47896 transitions. [2022-12-14 06:50:14,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 06:50:14,861 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 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 06:50:14,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:50:14,893 INFO L225 Difference]: With dead ends: 12760 [2022-12-14 06:50:14,893 INFO L226 Difference]: Without dead ends: 11980 [2022-12-14 06:50:14,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2022-12-14 06:50:14,894 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 196 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 06:50:14,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 7 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 06:50:14,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11980 states. [2022-12-14 06:50:15,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11980 to 7010. [2022-12-14 06:50:15,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7010 states, 6975 states have (on average 3.810179211469534) internal successors, (26576), 7009 states have internal predecessors, (26576), 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 06:50:15,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7010 states to 7010 states and 26576 transitions. [2022-12-14 06:50:15,070 INFO L78 Accepts]: Start accepts. Automaton has 7010 states and 26576 transitions. Word has length 18 [2022-12-14 06:50:15,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:50:15,070 INFO L495 AbstractCegarLoop]: Abstraction has 7010 states and 26576 transitions. [2022-12-14 06:50:15,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 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 06:50:15,070 INFO L276 IsEmpty]: Start isEmpty. Operand 7010 states and 26576 transitions. [2022-12-14 06:50:15,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 06:50:15,079 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:50:15,079 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:50:15,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 06:50:15,079 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2022-12-14 06:50:15,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:50:15,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1049450155, now seen corresponding path program 1 times [2022-12-14 06:50:15,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:50:15,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736870663] [2022-12-14 06:50:15,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:50:15,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:50:15,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:50:15,191 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 06:50:15,191 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:50:15,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736870663] [2022-12-14 06:50:15,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736870663] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:50:15,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:50:15,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 06:50:15,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010125173] [2022-12-14 06:50:15,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:50:15,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 06:50:15,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:50:15,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 06:50:15,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2022-12-14 06:50:15,192 INFO L87 Difference]: Start difference. First operand 7010 states and 26576 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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 06:50:15,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:50:15,446 INFO L93 Difference]: Finished difference Result 10550 states and 39549 transitions. [2022-12-14 06:50:15,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 06:50:15,447 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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 06:50:15,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:50:15,469 INFO L225 Difference]: With dead ends: 10550 [2022-12-14 06:50:15,469 INFO L226 Difference]: Without dead ends: 9796 [2022-12-14 06:50:15,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2022-12-14 06:50:15,470 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 157 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 06:50:15,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 9 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 06:50:15,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9796 states. [2022-12-14 06:50:15,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9796 to 7882. [2022-12-14 06:50:15,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7882 states, 7847 states have (on average 3.8498789346246975) internal successors, (30210), 7881 states have internal predecessors, (30210), 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 06:50:15,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7882 states to 7882 states and 30210 transitions. [2022-12-14 06:50:15,620 INFO L78 Accepts]: Start accepts. Automaton has 7882 states and 30210 transitions. Word has length 18 [2022-12-14 06:50:15,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:50:15,621 INFO L495 AbstractCegarLoop]: Abstraction has 7882 states and 30210 transitions. [2022-12-14 06:50:15,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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 06:50:15,621 INFO L276 IsEmpty]: Start isEmpty. Operand 7882 states and 30210 transitions. [2022-12-14 06:50:15,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 06:50:15,630 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:50:15,630 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:50:15,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 06:50:15,631 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2022-12-14 06:50:15,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:50:15,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1231954909, now seen corresponding path program 1 times [2022-12-14 06:50:15,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:50:15,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392101652] [2022-12-14 06:50:15,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:50:15,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:50:15,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:50:15,752 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 06:50:15,753 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:50:15,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392101652] [2022-12-14 06:50:15,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392101652] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:50:15,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:50:15,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 06:50:15,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373136439] [2022-12-14 06:50:15,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:50:15,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 06:50:15,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:50:15,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 06:50:15,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2022-12-14 06:50:15,754 INFO L87 Difference]: Start difference. First operand 7882 states and 30210 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 06:50:16,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:50:16,006 INFO L93 Difference]: Finished difference Result 12126 states and 46365 transitions. [2022-12-14 06:50:16,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 06:50:16,007 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 06:50:16,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:50:16,034 INFO L225 Difference]: With dead ends: 12126 [2022-12-14 06:50:16,034 INFO L226 Difference]: Without dead ends: 11368 [2022-12-14 06:50:16,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2022-12-14 06:50:16,035 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 129 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 06:50:16,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 6 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 06:50:16,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11368 states. [2022-12-14 06:50:16,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11368 to 8282. [2022-12-14 06:50:16,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8282 states, 8247 states have (on average 3.879713835334061) internal successors, (31996), 8281 states have internal predecessors, (31996), 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 06:50:16,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8282 states to 8282 states and 31996 transitions. [2022-12-14 06:50:16,204 INFO L78 Accepts]: Start accepts. Automaton has 8282 states and 31996 transitions. Word has length 18 [2022-12-14 06:50:16,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:50:16,204 INFO L495 AbstractCegarLoop]: Abstraction has 8282 states and 31996 transitions. [2022-12-14 06:50:16,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 06:50:16,205 INFO L276 IsEmpty]: Start isEmpty. Operand 8282 states and 31996 transitions. [2022-12-14 06:50:16,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 06:50:16,221 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:50:16,222 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:50:16,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-14 06:50:16,222 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2022-12-14 06:50:16,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:50:16,222 INFO L85 PathProgramCache]: Analyzing trace with hash -25215391, now seen corresponding path program 2 times [2022-12-14 06:50:16,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:50:16,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291961365] [2022-12-14 06:50:16,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:50:16,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:50:16,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:50:16,376 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 06:50:16,376 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:50:16,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291961365] [2022-12-14 06:50:16,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291961365] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:50:16,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:50:16,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 06:50:16,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675152911] [2022-12-14 06:50:16,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:50:16,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 06:50:16,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:50:16,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 06:50:16,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-12-14 06:50:16,377 INFO L87 Difference]: Start difference. First operand 8282 states and 31996 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 06:50:16,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:50:16,635 INFO L93 Difference]: Finished difference Result 12034 states and 46383 transitions. [2022-12-14 06:50:16,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 06:50:16,635 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 06:50:16,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:50:16,669 INFO L225 Difference]: With dead ends: 12034 [2022-12-14 06:50:16,669 INFO L226 Difference]: Without dead ends: 11298 [2022-12-14 06:50:16,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-12-14 06:50:16,669 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 116 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 06:50:16,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 8 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 06:50:16,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11298 states. [2022-12-14 06:50:16,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11298 to 8186. [2022-12-14 06:50:16,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8186 states, 8151 states have (on average 3.880750828119249) internal successors, (31632), 8185 states have internal predecessors, (31632), 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 06:50:16,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8186 states to 8186 states and 31632 transitions. [2022-12-14 06:50:16,882 INFO L78 Accepts]: Start accepts. Automaton has 8186 states and 31632 transitions. Word has length 18 [2022-12-14 06:50:16,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:50:16,883 INFO L495 AbstractCegarLoop]: Abstraction has 8186 states and 31632 transitions. [2022-12-14 06:50:16,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 06:50:16,883 INFO L276 IsEmpty]: Start isEmpty. Operand 8186 states and 31632 transitions. [2022-12-14 06:50:16,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 06:50:16,894 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:50:16,894 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:50:16,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-14 06:50:16,894 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2022-12-14 06:50:16,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:50:16,895 INFO L85 PathProgramCache]: Analyzing trace with hash 2089933639, now seen corresponding path program 3 times [2022-12-14 06:50:16,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:50:16,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255312106] [2022-12-14 06:50:16,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:50:16,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:50:16,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:50:17,017 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 06:50:17,017 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:50:17,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255312106] [2022-12-14 06:50:17,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255312106] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:50:17,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:50:17,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 06:50:17,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970482189] [2022-12-14 06:50:17,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:50:17,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 06:50:17,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:50:17,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 06:50:17,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-12-14 06:50:17,019 INFO L87 Difference]: Start difference. First operand 8186 states and 31632 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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 06:50:17,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:50:17,278 INFO L93 Difference]: Finished difference Result 11102 states and 42843 transitions. [2022-12-14 06:50:17,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 06:50:17,279 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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 06:50:17,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:50:17,302 INFO L225 Difference]: With dead ends: 11102 [2022-12-14 06:50:17,302 INFO L226 Difference]: Without dead ends: 10306 [2022-12-14 06:50:17,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-12-14 06:50:17,303 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 146 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 06:50:17,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 8 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 06:50:17,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10306 states. [2022-12-14 06:50:17,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10306 to 6388. [2022-12-14 06:50:17,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6388 states, 6357 states have (on average 3.8846940380682713) internal successors, (24695), 6387 states have internal predecessors, (24695), 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 06:50:17,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6388 states to 6388 states and 24695 transitions. [2022-12-14 06:50:17,441 INFO L78 Accepts]: Start accepts. Automaton has 6388 states and 24695 transitions. Word has length 18 [2022-12-14 06:50:17,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:50:17,441 INFO L495 AbstractCegarLoop]: Abstraction has 6388 states and 24695 transitions. [2022-12-14 06:50:17,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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 06:50:17,441 INFO L276 IsEmpty]: Start isEmpty. Operand 6388 states and 24695 transitions. [2022-12-14 06:50:17,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-14 06:50:17,450 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:50:17,450 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:50:17,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-14 06:50:17,450 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2022-12-14 06:50:17,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:50:17,451 INFO L85 PathProgramCache]: Analyzing trace with hash -184000045, now seen corresponding path program 1 times [2022-12-14 06:50:17,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:50:17,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797818849] [2022-12-14 06:50:17,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:50:17,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:50:17,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:50:17,580 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 06:50:17,580 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:50:17,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797818849] [2022-12-14 06:50:17,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797818849] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:50:17,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:50:17,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 06:50:17,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335445763] [2022-12-14 06:50:17,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:50:17,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 06:50:17,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:50:17,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 06:50:17,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-12-14 06:50:17,582 INFO L87 Difference]: Start difference. First operand 6388 states and 24695 transitions. Second operand has 9 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 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 06:50:17,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:50:17,912 INFO L93 Difference]: Finished difference Result 14670 states and 52224 transitions. [2022-12-14 06:50:17,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 06:50:17,913 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 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 19 [2022-12-14 06:50:17,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:50:17,945 INFO L225 Difference]: With dead ends: 14670 [2022-12-14 06:50:17,945 INFO L226 Difference]: Without dead ends: 14516 [2022-12-14 06:50:17,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2022-12-14 06:50:17,946 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 166 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 06:50:17,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 9 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 06:50:17,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14516 states. [2022-12-14 06:50:18,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14516 to 7546. [2022-12-14 06:50:18,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7546 states, 7515 states have (on average 3.996806387225549) internal successors, (30036), 7545 states have internal predecessors, (30036), 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 06:50:18,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7546 states to 7546 states and 30036 transitions. [2022-12-14 06:50:18,129 INFO L78 Accepts]: Start accepts. Automaton has 7546 states and 30036 transitions. Word has length 19 [2022-12-14 06:50:18,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:50:18,129 INFO L495 AbstractCegarLoop]: Abstraction has 7546 states and 30036 transitions. [2022-12-14 06:50:18,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 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 06:50:18,130 INFO L276 IsEmpty]: Start isEmpty. Operand 7546 states and 30036 transitions. [2022-12-14 06:50:18,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-14 06:50:18,141 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:50:18,141 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:50:18,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-14 06:50:18,141 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2022-12-14 06:50:18,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:50:18,142 INFO L85 PathProgramCache]: Analyzing trace with hash -186798456, now seen corresponding path program 1 times [2022-12-14 06:50:18,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:50:18,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871471460] [2022-12-14 06:50:18,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:50:18,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:50:18,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:50:18,252 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 06:50:18,253 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:50:18,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871471460] [2022-12-14 06:50:18,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871471460] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:50:18,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:50:18,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 06:50:18,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013827245] [2022-12-14 06:50:18,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:50:18,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 06:50:18,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:50:18,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 06:50:18,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-14 06:50:18,254 INFO L87 Difference]: Start difference. First operand 7546 states and 30036 transitions. Second operand has 9 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 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 06:50:18,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:50:18,578 INFO L93 Difference]: Finished difference Result 12658 states and 48449 transitions. [2022-12-14 06:50:18,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 06:50:18,579 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 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 19 [2022-12-14 06:50:18,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:50:18,614 INFO L225 Difference]: With dead ends: 12658 [2022-12-14 06:50:18,614 INFO L226 Difference]: Without dead ends: 11936 [2022-12-14 06:50:18,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2022-12-14 06:50:18,615 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 139 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 06:50:18,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 13 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 06:50:18,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11936 states. [2022-12-14 06:50:18,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11936 to 8894. [2022-12-14 06:50:18,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8894 states, 8863 states have (on average 3.9064650795441724) internal successors, (34623), 8893 states have internal predecessors, (34623), 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 06:50:18,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8894 states to 8894 states and 34623 transitions. [2022-12-14 06:50:18,801 INFO L78 Accepts]: Start accepts. Automaton has 8894 states and 34623 transitions. Word has length 19 [2022-12-14 06:50:18,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:50:18,801 INFO L495 AbstractCegarLoop]: Abstraction has 8894 states and 34623 transitions. [2022-12-14 06:50:18,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 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 06:50:18,802 INFO L276 IsEmpty]: Start isEmpty. Operand 8894 states and 34623 transitions. [2022-12-14 06:50:18,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-14 06:50:18,817 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:50:18,817 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:50:18,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-14 06:50:18,817 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2022-12-14 06:50:18,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:50:18,818 INFO L85 PathProgramCache]: Analyzing trace with hash -274412826, now seen corresponding path program 2 times [2022-12-14 06:50:18,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:50:18,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390906003] [2022-12-14 06:50:18,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:50:18,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:50:18,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:50:18,919 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 06:50:18,919 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:50:18,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390906003] [2022-12-14 06:50:18,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390906003] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:50:18,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:50:18,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 06:50:18,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414193438] [2022-12-14 06:50:18,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:50:18,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 06:50:18,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:50:18,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 06:50:18,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-14 06:50:18,922 INFO L87 Difference]: Start difference. First operand 8894 states and 34623 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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 06:50:19,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:50:19,142 INFO L93 Difference]: Finished difference Result 8438 states and 33505 transitions. [2022-12-14 06:50:19,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 06:50:19,143 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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 19 [2022-12-14 06:50:19,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:50:19,165 INFO L225 Difference]: With dead ends: 8438 [2022-12-14 06:50:19,165 INFO L226 Difference]: Without dead ends: 7664 [2022-12-14 06:50:19,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-14 06:50:19,165 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 161 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 06:50:19,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 5 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 06:50:19,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7664 states. [2022-12-14 06:50:19,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7664 to 4920. [2022-12-14 06:50:19,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4920 states, 4915 states have (on average 3.8732451678535096) internal successors, (19037), 4919 states have internal predecessors, (19037), 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 06:50:19,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4920 states to 4920 states and 19037 transitions. [2022-12-14 06:50:19,284 INFO L78 Accepts]: Start accepts. Automaton has 4920 states and 19037 transitions. Word has length 19 [2022-12-14 06:50:19,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:50:19,284 INFO L495 AbstractCegarLoop]: Abstraction has 4920 states and 19037 transitions. [2022-12-14 06:50:19,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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 06:50:19,284 INFO L276 IsEmpty]: Start isEmpty. Operand 4920 states and 19037 transitions. [2022-12-14 06:50:19,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-12-14 06:50:19,292 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:50:19,292 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:50:19,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-14 06:50:19,292 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread5Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2022-12-14 06:50:19,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:50:19,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1525489918, now seen corresponding path program 1 times [2022-12-14 06:50:19,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:50:19,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442317136] [2022-12-14 06:50:19,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:50:19,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:50:19,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:50:19,404 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 06:50:19,405 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:50:19,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442317136] [2022-12-14 06:50:19,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442317136] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:50:19,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:50:19,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 06:50:19,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195160190] [2022-12-14 06:50:19,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:50:19,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 06:50:19,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:50:19,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 06:50:19,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2022-12-14 06:50:19,406 INFO L87 Difference]: Start difference. First operand 4920 states and 19037 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) 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 06:50:19,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:50:19,623 INFO L93 Difference]: Finished difference Result 7802 states and 29423 transitions. [2022-12-14 06:50:19,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 06:50:19,623 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) 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 22 [2022-12-14 06:50:19,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:50:19,633 INFO L225 Difference]: With dead ends: 7802 [2022-12-14 06:50:19,633 INFO L226 Difference]: Without dead ends: 4760 [2022-12-14 06:50:19,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2022-12-14 06:50:19,634 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 156 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 06:50:19,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 8 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 06:50:19,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4760 states. [2022-12-14 06:50:19,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4760 to 4760. [2022-12-14 06:50:19,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4760 states, 4755 states have (on average 3.8321766561514194) internal successors, (18222), 4759 states have internal predecessors, (18222), 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 06:50:19,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4760 states to 4760 states and 18222 transitions. [2022-12-14 06:50:19,708 INFO L78 Accepts]: Start accepts. Automaton has 4760 states and 18222 transitions. Word has length 22 [2022-12-14 06:50:19,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:50:19,708 INFO L495 AbstractCegarLoop]: Abstraction has 4760 states and 18222 transitions. [2022-12-14 06:50:19,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) 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 06:50:19,708 INFO L276 IsEmpty]: Start isEmpty. Operand 4760 states and 18222 transitions. [2022-12-14 06:50:19,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-12-14 06:50:19,716 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:50:19,716 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:50:19,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-14 06:50:19,716 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2022-12-14 06:50:19,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:50:19,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1916141800, now seen corresponding path program 1 times [2022-12-14 06:50:19,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:50:19,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915808866] [2022-12-14 06:50:19,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:50:19,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:50:19,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:50:19,807 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 06:50:19,808 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:50:19,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915808866] [2022-12-14 06:50:19,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915808866] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:50:19,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:50:19,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 06:50:19,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362439332] [2022-12-14 06:50:19,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:50:19,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 06:50:19,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:50:19,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 06:50:19,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-12-14 06:50:19,809 INFO L87 Difference]: Start difference. First operand 4760 states and 18222 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) 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 06:50:19,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:50:19,979 INFO L93 Difference]: Finished difference Result 4730 states and 18167 transitions. [2022-12-14 06:50:19,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 06:50:19,979 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) 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 22 [2022-12-14 06:50:19,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:50:19,979 INFO L225 Difference]: With dead ends: 4730 [2022-12-14 06:50:19,980 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 06:50:19,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-12-14 06:50:19,980 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 106 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:50:19,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 5 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:50:19,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 06:50:19,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 06:50:19,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:50:19,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 06:50:19,982 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2022-12-14 06:50:19,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:50:19,982 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 06:50:19,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) 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 06:50:19,982 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 06:50:19,982 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 06:50:19,984 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (44 of 45 remaining) [2022-12-14 06:50:19,984 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (43 of 45 remaining) [2022-12-14 06:50:19,984 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (42 of 45 remaining) [2022-12-14 06:50:19,985 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 45 remaining) [2022-12-14 06:50:19,985 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 45 remaining) [2022-12-14 06:50:19,985 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 45 remaining) [2022-12-14 06:50:19,985 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 45 remaining) [2022-12-14 06:50:19,985 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 45 remaining) [2022-12-14 06:50:19,985 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 45 remaining) [2022-12-14 06:50:19,985 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 45 remaining) [2022-12-14 06:50:19,985 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 45 remaining) [2022-12-14 06:50:19,985 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 45 remaining) [2022-12-14 06:50:19,985 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (32 of 45 remaining) [2022-12-14 06:50:19,985 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (31 of 45 remaining) [2022-12-14 06:50:19,985 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 45 remaining) [2022-12-14 06:50:19,985 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (29 of 45 remaining) [2022-12-14 06:50:19,986 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 45 remaining) [2022-12-14 06:50:19,986 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 45 remaining) [2022-12-14 06:50:19,986 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 45 remaining) [2022-12-14 06:50:19,986 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 45 remaining) [2022-12-14 06:50:19,986 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 45 remaining) [2022-12-14 06:50:19,986 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread5Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 45 remaining) [2022-12-14 06:50:19,986 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread5Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 45 remaining) [2022-12-14 06:50:19,986 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread5Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 45 remaining) [2022-12-14 06:50:19,986 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread5Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 45 remaining) [2022-12-14 06:50:19,986 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 45 remaining) [2022-12-14 06:50:19,986 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 45 remaining) [2022-12-14 06:50:19,986 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 45 remaining) [2022-12-14 06:50:19,987 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 45 remaining) [2022-12-14 06:50:19,987 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 45 remaining) [2022-12-14 06:50:19,987 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 45 remaining) [2022-12-14 06:50:19,987 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 45 remaining) [2022-12-14 06:50:19,987 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 45 remaining) [2022-12-14 06:50:19,987 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 45 remaining) [2022-12-14 06:50:19,987 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 45 remaining) [2022-12-14 06:50:19,987 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 45 remaining) [2022-12-14 06:50:19,987 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 45 remaining) [2022-12-14 06:50:19,987 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 45 remaining) [2022-12-14 06:50:19,987 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 45 remaining) [2022-12-14 06:50:19,987 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 45 remaining) [2022-12-14 06:50:19,987 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 45 remaining) [2022-12-14 06:50:19,988 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread5Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 45 remaining) [2022-12-14 06:50:19,988 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread5Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 45 remaining) [2022-12-14 06:50:19,988 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread5Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 45 remaining) [2022-12-14 06:50:19,988 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread5Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 45 remaining) [2022-12-14 06:50:19,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-14 06:50:19,990 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:50:19,993 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-14 06:50:19,993 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 06:50:19,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 06:50:19 BasicIcfg [2022-12-14 06:50:19,995 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 06:50:19,995 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 06:50:19,995 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 06:50:19,995 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 06:50:19,995 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:49:48" (3/4) ... [2022-12-14 06:50:19,997 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 06:50:20,000 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-12-14 06:50:20,001 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-12-14 06:50:20,001 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-12-14 06:50:20,001 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread4 [2022-12-14 06:50:20,001 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread5 [2022-12-14 06:50:20,004 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 26 nodes and edges [2022-12-14 06:50:20,004 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-14 06:50:20,004 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-14 06:50:20,004 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 06:50:20,025 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9127ad8-c7f7-40d3-b78a-7c8d9fb1661d/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 06:50:20,026 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 06:50:20,026 INFO L158 Benchmark]: Toolchain (without parser) took 32767.36ms. Allocated memory was 121.6MB in the beginning and 9.6GB in the end (delta: 9.5GB). Free memory was 87.4MB in the beginning and 6.2GB in the end (delta: -6.1GB). Peak memory consumption was 3.3GB. Max. memory is 16.1GB. [2022-12-14 06:50:20,026 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 121.6MB. Free memory is still 97.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 06:50:20,026 INFO L158 Benchmark]: CACSL2BoogieTranslator took 222.58ms. Allocated memory is still 121.6MB. Free memory was 87.4MB in the beginning and 71.0MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-14 06:50:20,026 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.86ms. Allocated memory is still 121.6MB. Free memory was 71.0MB in the beginning and 68.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 06:50:20,027 INFO L158 Benchmark]: Boogie Preprocessor took 23.59ms. Allocated memory is still 121.6MB. Free memory was 68.9MB in the beginning and 67.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 06:50:20,027 INFO L158 Benchmark]: RCFGBuilder took 579.21ms. Allocated memory was 121.6MB in the beginning and 146.8MB in the end (delta: 25.2MB). Free memory was 67.1MB in the beginning and 103.1MB in the end (delta: -36.0MB). Peak memory consumption was 26.8MB. Max. memory is 16.1GB. [2022-12-14 06:50:20,027 INFO L158 Benchmark]: TraceAbstraction took 31866.22ms. Allocated memory was 146.8MB in the beginning and 9.6GB in the end (delta: 9.5GB). Free memory was 102.3MB in the beginning and 6.2GB in the end (delta: -6.1GB). Peak memory consumption was 3.3GB. Max. memory is 16.1GB. [2022-12-14 06:50:20,027 INFO L158 Benchmark]: Witness Printer took 30.66ms. Allocated memory is still 9.6GB. Free memory was 6.2GB in the beginning and 6.2GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 06:50:20,028 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 121.6MB. Free memory is still 97.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 222.58ms. Allocated memory is still 121.6MB. Free memory was 87.4MB in the beginning and 71.0MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.86ms. Allocated memory is still 121.6MB. Free memory was 71.0MB in the beginning and 68.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.59ms. Allocated memory is still 121.6MB. Free memory was 68.9MB in the beginning and 67.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 579.21ms. Allocated memory was 121.6MB in the beginning and 146.8MB in the end (delta: 25.2MB). Free memory was 67.1MB in the beginning and 103.1MB in the end (delta: -36.0MB). Peak memory consumption was 26.8MB. Max. memory is 16.1GB. * TraceAbstraction took 31866.22ms. Allocated memory was 146.8MB in the beginning and 9.6GB in the end (delta: 9.5GB). Free memory was 102.3MB in the beginning and 6.2GB in the end (delta: -6.1GB). Peak memory consumption was 3.3GB. Max. memory is 16.1GB. * Witness Printer took 30.66ms. Allocated memory is still 9.6GB. Free memory was 6.2GB in the beginning and 6.2GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.2s, 198 PlacesBefore, 78 PlacesAfterwards, 184 TransitionsBefore, 62 TransitionsAfterwards, 4234 CoEnabledTransitionPairs, 7 FixpointIterations, 83 TrivialSequentialCompositions, 51 ConcurrentSequentialCompositions, 12 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 148 TotalNumberOfCompositions, 18475 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6872, independent: 6550, independent conditional: 0, independent unconditional: 6550, dependent: 322, dependent conditional: 0, dependent unconditional: 322, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2743, independent: 2650, independent conditional: 0, independent unconditional: 2650, dependent: 93, dependent conditional: 0, dependent unconditional: 93, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2743, independent: 2507, independent conditional: 0, independent unconditional: 2507, dependent: 236, dependent conditional: 0, dependent unconditional: 236, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 236, independent: 143, independent conditional: 0, independent unconditional: 143, dependent: 93, dependent conditional: 0, dependent unconditional: 93, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 446, independent: 252, independent conditional: 0, independent unconditional: 252, dependent: 194, dependent conditional: 0, dependent unconditional: 194, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 6872, independent: 3900, independent conditional: 0, independent unconditional: 3900, dependent: 229, dependent conditional: 0, dependent unconditional: 229, unknown: 2743, unknown conditional: 0, unknown unconditional: 2743] , Statistics on independence cache: Total cache size (in pairs): 497, Positive cache size: 448, Positive conditional cache size: 0, Positive unconditional cache size: 448, Negative cache size: 49, Negative conditional cache size: 0, Negative unconditional cache size: 49, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 57]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 57]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 66]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 66]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 76]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 76]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 104]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 104]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 114]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 114]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 123]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 123]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 133]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 133]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 11 procedures, 244 locations, 45 error locations. Started 1 CEGAR loops. OverallTime: 31.7s, OverallIterations: 21, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.2s, AutomataDifference: 9.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2425 SdHoareTripleChecker+Valid, 3.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2425 mSDsluCounter, 121 SdHoareTripleChecker+Invalid, 2.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 90 mSDsCounter, 484 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4865 IncrementalHoareTripleChecker+Invalid, 5349 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 484 mSolverCounterUnsat, 31 mSDtfsCounter, 4865 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 117 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=93610occurred in iteration=0, InterpolantAutomatonStates: 135, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 10.7s AutomataMinimizationTime, 21 MinimizatonAttempts, 48690 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 291 NumberOfCodeBlocks, 291 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 270 ConstructedInterpolants, 0 QuantifiedInterpolants, 1816 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 21 InterpolantComputations, 21 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 20 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-14 06:50:20,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9127ad8-c7f7-40d3-b78a-7c8d9fb1661d/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE