./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc6fe91-74cb-42c2-9109-18dc76b5eec5/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc6fe91-74cb-42c2-9109-18dc76b5eec5/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc6fe91-74cb-42c2-9109-18dc76b5eec5/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc6fe91-74cb-42c2-9109-18dc76b5eec5/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc6fe91-74cb-42c2-9109-18dc76b5eec5/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc6fe91-74cb-42c2-9109-18dc76b5eec5/bin/utaipan-g80aRyZoba --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 e7fe0631e7f950e2868c8cb954edca4f6de3fdffbf6debba58771511fbac2e8b --- 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-b5237d8 [2022-11-22 01:59:18,351 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:59:18,355 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:59:18,388 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:59:18,389 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:59:18,390 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:59:18,392 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:59:18,394 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:59:18,397 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:59:18,398 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:59:18,399 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:59:18,401 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:59:18,402 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:59:18,403 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:59:18,405 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:59:18,407 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:59:18,408 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:59:18,409 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:59:18,412 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:59:18,414 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:59:18,416 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:59:18,420 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:59:18,439 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:59:18,440 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:59:18,445 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:59:18,445 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:59:18,445 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:59:18,446 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:59:18,447 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:59:18,448 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:59:18,448 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:59:18,449 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:59:18,450 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:59:18,459 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:59:18,463 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:59:18,464 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:59:18,464 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:59:18,465 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:59:18,465 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:59:18,469 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:59:18,470 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:59:18,471 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc6fe91-74cb-42c2-9109-18dc76b5eec5/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-22 01:59:18,540 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:59:18,544 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:59:18,545 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:59:18,546 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:59:18,547 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:59:18,547 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:59:18,547 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:59:18,547 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:59:18,548 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:59:18,548 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:59:18,549 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:59:18,550 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:59:18,550 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:59:18,550 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:59:18,550 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:59:18,551 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:59:18,551 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:59:18,551 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:59:18,552 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:59:18,552 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 01:59:18,553 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 01:59:18,553 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:59:18,553 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 01:59:18,553 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:59:18,554 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:59:18,554 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:59:18,554 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:59:18,554 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-22 01:59:18,555 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 01:59:18,555 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:59:18,555 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:59:18,556 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:59:18,557 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:59:18,557 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:59:18,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:59:18,558 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:59:18,558 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:59:18,559 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:59:18,559 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:59:18,559 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:59:18,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:59:18,560 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:59:18,560 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:59:18,560 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_7bc6fe91-74cb-42c2-9109-18dc76b5eec5/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc6fe91-74cb-42c2-9109-18dc76b5eec5/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e7fe0631e7f950e2868c8cb954edca4f6de3fdffbf6debba58771511fbac2e8b [2022-11-22 01:59:18,891 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:59:18,923 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:59:18,931 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:59:18,933 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:59:18,933 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:59:18,935 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc6fe91-74cb-42c2-9109-18dc76b5eec5/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i [2022-11-22 01:59:22,582 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:59:22,998 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:59:22,999 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc6fe91-74cb-42c2-9109-18dc76b5eec5/sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i [2022-11-22 01:59:23,017 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc6fe91-74cb-42c2-9109-18dc76b5eec5/bin/utaipan-g80aRyZoba/data/09fedc454/d624866e7c094a49a3ac606c79c6981e/FLAGa92449c40 [2022-11-22 01:59:23,036 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc6fe91-74cb-42c2-9109-18dc76b5eec5/bin/utaipan-g80aRyZoba/data/09fedc454/d624866e7c094a49a3ac606c79c6981e [2022-11-22 01:59:23,039 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:59:23,041 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:59:23,043 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:59:23,043 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:59:23,048 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:59:23,049 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:59:23" (1/1) ... [2022-11-22 01:59:23,050 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12556a18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:23, skipping insertion in model container [2022-11-22 01:59:23,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:59:23" (1/1) ... [2022-11-22 01:59:23,060 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:59:23,100 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:59:23,487 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_7bc6fe91-74cb-42c2-9109-18dc76b5eec5/sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i[30687,30700] [2022-11-22 01:59:23,492 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:59:23,506 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:59:23,555 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_7bc6fe91-74cb-42c2-9109-18dc76b5eec5/sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i[30687,30700] [2022-11-22 01:59:23,557 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:59:23,600 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:59:23,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:23 WrapperNode [2022-11-22 01:59:23,601 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:59:23,603 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:59:23,603 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:59:23,603 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:59:23,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:23" (1/1) ... [2022-11-22 01:59:23,629 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:23" (1/1) ... [2022-11-22 01:59:23,657 INFO L138 Inliner]: procedures = 170, calls = 35, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 112 [2022-11-22 01:59:23,657 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:59:23,658 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:59:23,659 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:59:23,659 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:59:23,670 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:23" (1/1) ... [2022-11-22 01:59:23,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:23" (1/1) ... [2022-11-22 01:59:23,674 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:23" (1/1) ... [2022-11-22 01:59:23,674 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:23" (1/1) ... [2022-11-22 01:59:23,681 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:23" (1/1) ... [2022-11-22 01:59:23,686 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:23" (1/1) ... [2022-11-22 01:59:23,688 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:23" (1/1) ... [2022-11-22 01:59:23,690 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:23" (1/1) ... [2022-11-22 01:59:23,693 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:59:23,694 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:59:23,695 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:59:23,695 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:59:23,696 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:23" (1/1) ... [2022-11-22 01:59:23,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:59:23,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc6fe91-74cb-42c2-9109-18dc76b5eec5/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:59:23,761 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc6fe91-74cb-42c2-9109-18dc76b5eec5/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:59:23,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc6fe91-74cb-42c2-9109-18dc76b5eec5/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:59:23,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 01:59:23,822 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-22 01:59:23,822 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-22 01:59:23,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 01:59:23,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:59:23,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 01:59:23,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 01:59:23,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 01:59:23,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:59:23,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:59:23,825 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-22 01:59:23,994 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:59:23,996 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:59:24,345 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:59:24,516 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:59:24,517 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-22 01:59:24,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:59:24 BoogieIcfgContainer [2022-11-22 01:59:24,520 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:59:24,558 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:59:24,559 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:59:24,563 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:59:24,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:59:23" (1/3) ... [2022-11-22 01:59:24,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a85eebb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:59:24, skipping insertion in model container [2022-11-22 01:59:24,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:23" (2/3) ... [2022-11-22 01:59:24,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a85eebb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:59:24, skipping insertion in model container [2022-11-22 01:59:24,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:59:24" (3/3) ... [2022-11-22 01:59:24,567 INFO L112 eAbstractionObserver]: Analyzing ICFG 36_stack_cas_p0_vs_concur.i [2022-11-22 01:59:24,578 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-22 01:59:24,591 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:59:24,591 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-22 01:59:24,592 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-22 01:59:24,690 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-22 01:59:24,746 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-22 01:59:24,783 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 104 places, 110 transitions, 225 flow [2022-11-22 01:59:24,791 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 104 places, 110 transitions, 225 flow [2022-11-22 01:59:24,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 110 transitions, 225 flow [2022-11-22 01:59:24,916 INFO L130 PetriNetUnfolder]: 10/121 cut-off events. [2022-11-22 01:59:24,917 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-22 01:59:24,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 121 events. 10/121 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 147 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 90. Up to 4 conditions per place. [2022-11-22 01:59:24,929 INFO L119 LiptonReduction]: Number of co-enabled transitions 2156 [2022-11-22 01:59:31,126 INFO L134 LiptonReduction]: Checked pairs total: 2540 [2022-11-22 01:59:31,126 INFO L136 LiptonReduction]: Total number of compositions: 112 [2022-11-22 01:59:31,136 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 32 transitions, 69 flow [2022-11-22 01:59:31,162 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 117 states, 96 states have (on average 2.3229166666666665) internal successors, (223), 116 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:31,182 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:59:31,190 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;@2a1db34c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:59:31,190 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-22 01:59:31,193 INFO L276 IsEmpty]: Start isEmpty. Operand has 117 states, 96 states have (on average 2.3229166666666665) internal successors, (223), 116 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:31,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-22 01:59:31,200 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:31,201 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-22 01:59:31,201 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-22 01:59:31,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:31,208 INFO L85 PathProgramCache]: Analyzing trace with hash 534059933, now seen corresponding path program 1 times [2022-11-22 01:59:31,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:31,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960030916] [2022-11-22 01:59:31,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:31,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:31,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:31,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:59:31,518 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:31,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960030916] [2022-11-22 01:59:31,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960030916] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:31,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:59:31,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 01:59:31,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284687142] [2022-11-22 01:59:31,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:31,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:59:31,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:31,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:59:31,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:59:31,559 INFO L87 Difference]: Start difference. First operand has 117 states, 96 states have (on average 2.3229166666666665) internal successors, (223), 116 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:31,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:59:31,669 INFO L93 Difference]: Finished difference Result 83 states and 151 transitions. [2022-11-22 01:59:31,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:59:31,672 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-22 01:59:31,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:59:31,688 INFO L225 Difference]: With dead ends: 83 [2022-11-22 01:59:31,688 INFO L226 Difference]: Without dead ends: 83 [2022-11-22 01:59:31,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:59:31,696 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:59:31,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 7 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:59:31,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-11-22 01:59:31,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2022-11-22 01:59:31,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 76 states have (on average 1.986842105263158) internal successors, (151), 82 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:31,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 151 transitions. [2022-11-22 01:59:31,772 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 151 transitions. Word has length 5 [2022-11-22 01:59:31,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:59:31,774 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 151 transitions. [2022-11-22 01:59:31,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:31,774 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 151 transitions. [2022-11-22 01:59:31,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-22 01:59:31,775 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:31,775 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-22 01:59:31,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:59:31,776 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-22 01:59:31,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:31,777 INFO L85 PathProgramCache]: Analyzing trace with hash -623919486, now seen corresponding path program 1 times [2022-11-22 01:59:31,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:31,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584864637] [2022-11-22 01:59:31,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:31,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:31,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 01:59:31,825 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-22 01:59:31,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 01:59:31,863 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-22 01:59:31,863 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-22 01:59:31,866 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-11-22 01:59:31,868 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2022-11-22 01:59:31,869 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2022-11-22 01:59:31,869 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2022-11-22 01:59:31,869 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2022-11-22 01:59:31,870 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2022-11-22 01:59:31,870 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2022-11-22 01:59:31,871 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2022-11-22 01:59:31,871 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2022-11-22 01:59:31,871 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2022-11-22 01:59:31,872 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2022-11-22 01:59:31,872 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2022-11-22 01:59:31,872 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2022-11-22 01:59:31,873 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2022-11-22 01:59:31,873 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2022-11-22 01:59:31,873 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2022-11-22 01:59:31,874 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2022-11-22 01:59:31,874 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2022-11-22 01:59:31,874 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2022-11-22 01:59:31,875 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2022-11-22 01:59:31,875 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2022-11-22 01:59:31,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 01:59:31,878 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-22 01:59:31,881 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-22 01:59:31,881 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-22 01:59:31,940 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-22 01:59:31,944 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-22 01:59:31,944 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 176 places, 188 transitions, 388 flow [2022-11-22 01:59:31,945 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 176 places, 188 transitions, 388 flow [2022-11-22 01:59:31,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 188 transitions, 388 flow [2022-11-22 01:59:32,004 INFO L130 PetriNetUnfolder]: 19/212 cut-off events. [2022-11-22 01:59:32,004 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-22 01:59:32,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 212 events. 19/212 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 549 event pairs, 0 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 167. Up to 6 conditions per place. [2022-11-22 01:59:32,020 INFO L119 LiptonReduction]: Number of co-enabled transitions 16324 [2022-11-22 01:59:47,947 INFO L134 LiptonReduction]: Checked pairs total: 40524 [2022-11-22 01:59:47,948 INFO L136 LiptonReduction]: Total number of compositions: 183 [2022-11-22 01:59:47,958 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 66 places, 69 transitions, 150 flow [2022-11-22 01:59:48,191 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 4672 states, 4421 states have (on average 3.1949785116489484) internal successors, (14125), 4671 states have internal predecessors, (14125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:48,201 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:59:48,202 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;@2a1db34c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:59:48,202 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2022-11-22 01:59:48,219 INFO L276 IsEmpty]: Start isEmpty. Operand has 4672 states, 4421 states have (on average 3.1949785116489484) internal successors, (14125), 4671 states have internal predecessors, (14125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:48,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-22 01:59:48,220 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:48,221 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-22 01:59:48,221 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-11-22 01:59:48,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:48,222 INFO L85 PathProgramCache]: Analyzing trace with hash 956274917, now seen corresponding path program 1 times [2022-11-22 01:59:48,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:48,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325087548] [2022-11-22 01:59:48,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:48,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:48,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:48,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:59:48,323 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:48,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325087548] [2022-11-22 01:59:48,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325087548] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:48,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:59:48,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 01:59:48,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9595115] [2022-11-22 01:59:48,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:48,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-22 01:59:48,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:48,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-22 01:59:48,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 01:59:48,348 INFO L87 Difference]: Start difference. First operand has 4672 states, 4421 states have (on average 3.1949785116489484) internal successors, (14125), 4671 states have internal predecessors, (14125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 5.0) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:48,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:59:48,563 INFO L93 Difference]: Finished difference Result 2855 states and 8269 transitions. [2022-11-22 01:59:48,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-22 01:59:48,564 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 5.0) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-22 01:59:48,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:59:48,666 INFO L225 Difference]: With dead ends: 2855 [2022-11-22 01:59:48,667 INFO L226 Difference]: Without dead ends: 2855 [2022-11-22 01:59:48,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 01:59:48,669 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:59:48,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 11 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:59:48,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2855 states. [2022-11-22 01:59:48,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2855 to 2855. [2022-11-22 01:59:48,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2855 states, 2806 states have (on average 2.9468995010691375) internal successors, (8269), 2854 states have internal predecessors, (8269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:48,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2855 states to 2855 states and 8269 transitions. [2022-11-22 01:59:48,882 INFO L78 Accepts]: Start accepts. Automaton has 2855 states and 8269 transitions. Word has length 5 [2022-11-22 01:59:48,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:59:48,883 INFO L495 AbstractCegarLoop]: Abstraction has 2855 states and 8269 transitions. [2022-11-22 01:59:48,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 5.0) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:48,883 INFO L276 IsEmpty]: Start isEmpty. Operand 2855 states and 8269 transitions. [2022-11-22 01:59:48,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-22 01:59:48,884 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:48,884 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-22 01:59:48,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 01:59:48,885 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-11-22 01:59:48,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:48,886 INFO L85 PathProgramCache]: Analyzing trace with hash -420247718, now seen corresponding path program 1 times [2022-11-22 01:59:48,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:48,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451225828] [2022-11-22 01:59:48,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:48,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:48,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:48,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:59:48,956 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:48,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451225828] [2022-11-22 01:59:48,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451225828] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:48,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:59:48,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 01:59:48,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797582699] [2022-11-22 01:59:48,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:48,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:59:48,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:48,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:59:48,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:59:48,960 INFO L87 Difference]: Start difference. First operand 2855 states and 8269 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) [2022-11-22 01:59:49,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:59:49,292 INFO L93 Difference]: Finished difference Result 3352 states and 9379 transitions. [2022-11-22 01:59:49,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:59:49,293 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 [2022-11-22 01:59:49,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:59:49,320 INFO L225 Difference]: With dead ends: 3352 [2022-11-22 01:59:49,320 INFO L226 Difference]: Without dead ends: 3352 [2022-11-22 01:59:49,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:59:49,322 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 48 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:59:49,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 26 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 01:59:49,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3352 states. [2022-11-22 01:59:49,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3352 to 3227. [2022-11-22 01:59:49,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3227 states, 3178 states have (on average 2.9103209565764634) internal successors, (9249), 3226 states have internal predecessors, (9249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:49,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3227 states to 3227 states and 9249 transitions. [2022-11-22 01:59:49,549 INFO L78 Accepts]: Start accepts. Automaton has 3227 states and 9249 transitions. Word has length 6 [2022-11-22 01:59:49,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:59:49,550 INFO L495 AbstractCegarLoop]: Abstraction has 3227 states and 9249 transitions. [2022-11-22 01:59:49,551 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) [2022-11-22 01:59:49,552 INFO L276 IsEmpty]: Start isEmpty. Operand 3227 states and 9249 transitions. [2022-11-22 01:59:49,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-22 01:59:49,552 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:49,552 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-22 01:59:49,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 01:59:49,553 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-11-22 01:59:49,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:49,554 INFO L85 PathProgramCache]: Analyzing trace with hash -420247717, now seen corresponding path program 1 times [2022-11-22 01:59:49,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:49,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344693512] [2022-11-22 01:59:49,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:49,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:49,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:49,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:59:49,616 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:49,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344693512] [2022-11-22 01:59:49,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344693512] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:49,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:59:49,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 01:59:49,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449799226] [2022-11-22 01:59:49,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:49,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:59:49,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:49,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:59:49,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:59:49,620 INFO L87 Difference]: Start difference. First operand 3227 states and 9249 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) [2022-11-22 01:59:49,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:59:49,767 INFO L93 Difference]: Finished difference Result 2479 states and 7183 transitions. [2022-11-22 01:59:49,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:59:49,768 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 [2022-11-22 01:59:49,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:59:49,786 INFO L225 Difference]: With dead ends: 2479 [2022-11-22 01:59:49,786 INFO L226 Difference]: Without dead ends: 2479 [2022-11-22 01:59:49,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:59:49,788 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 46 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:59:49,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 11 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:59:49,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2479 states. [2022-11-22 01:59:49,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2479 to 2479. [2022-11-22 01:59:49,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2479 states, 2454 states have (on average 2.9270578647106764) internal successors, (7183), 2478 states have internal predecessors, (7183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:49,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2479 states to 2479 states and 7183 transitions. [2022-11-22 01:59:49,885 INFO L78 Accepts]: Start accepts. Automaton has 2479 states and 7183 transitions. Word has length 6 [2022-11-22 01:59:49,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:59:49,886 INFO L495 AbstractCegarLoop]: Abstraction has 2479 states and 7183 transitions. [2022-11-22 01:59:49,886 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) [2022-11-22 01:59:49,886 INFO L276 IsEmpty]: Start isEmpty. Operand 2479 states and 7183 transitions. [2022-11-22 01:59:49,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-22 01:59:49,887 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:49,887 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:59:49,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 01:59:49,888 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-11-22 01:59:49,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:49,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1564899799, now seen corresponding path program 1 times [2022-11-22 01:59:49,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:49,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598849165] [2022-11-22 01:59:49,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:49,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:49,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:50,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:59:50,394 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:50,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598849165] [2022-11-22 01:59:50,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598849165] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:50,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:59:50,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:59:50,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135875553] [2022-11-22 01:59:50,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:50,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:59:50,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:50,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:59:50,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:59:50,397 INFO L87 Difference]: Start difference. First operand 2479 states and 7183 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) [2022-11-22 01:59:51,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:59:51,098 INFO L93 Difference]: Finished difference Result 2967 states and 8568 transitions. [2022-11-22 01:59:51,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:59:51,100 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 [2022-11-22 01:59:51,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:59:51,125 INFO L225 Difference]: With dead ends: 2967 [2022-11-22 01:59:51,126 INFO L226 Difference]: Without dead ends: 2967 [2022-11-22 01:59:51,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:59:51,127 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 81 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 01:59:51,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 75 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-22 01:59:51,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2967 states. [2022-11-22 01:59:51,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2967 to 2740. [2022-11-22 01:59:51,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2740 states, 2715 states have (on average 2.9745856353591162) internal successors, (8076), 2739 states have internal predecessors, (8076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:51,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2740 states to 2740 states and 8076 transitions. [2022-11-22 01:59:51,310 INFO L78 Accepts]: Start accepts. Automaton has 2740 states and 8076 transitions. Word has length 10 [2022-11-22 01:59:51,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:59:51,310 INFO L495 AbstractCegarLoop]: Abstraction has 2740 states and 8076 transitions. [2022-11-22 01:59:51,310 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) [2022-11-22 01:59:51,311 INFO L276 IsEmpty]: Start isEmpty. Operand 2740 states and 8076 transitions. [2022-11-22 01:59:51,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-22 01:59:51,312 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:51,312 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:59:51,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 01:59:51,312 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-11-22 01:59:51,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:51,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1564899877, now seen corresponding path program 1 times [2022-11-22 01:59:51,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:51,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968144422] [2022-11-22 01:59:51,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:51,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:51,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:51,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:59:51,579 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:51,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968144422] [2022-11-22 01:59:51,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968144422] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:51,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:59:51,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:59:51,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939506274] [2022-11-22 01:59:51,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:51,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:59:51,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:51,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:59:51,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:59:51,584 INFO L87 Difference]: Start difference. First operand 2740 states and 8076 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) [2022-11-22 01:59:52,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:59:52,216 INFO L93 Difference]: Finished difference Result 2938 states and 8350 transitions. [2022-11-22 01:59:52,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:59:52,217 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 [2022-11-22 01:59:52,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:59:52,251 INFO L225 Difference]: With dead ends: 2938 [2022-11-22 01:59:52,251 INFO L226 Difference]: Without dead ends: 2938 [2022-11-22 01:59:52,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:59:52,254 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 78 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 01:59:52,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 77 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-22 01:59:52,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2022-11-22 01:59:52,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 2740. [2022-11-22 01:59:52,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2740 states, 2715 states have (on average 2.912338858195212) internal successors, (7907), 2739 states have internal predecessors, (7907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:52,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2740 states to 2740 states and 7907 transitions. [2022-11-22 01:59:52,399 INFO L78 Accepts]: Start accepts. Automaton has 2740 states and 7907 transitions. Word has length 10 [2022-11-22 01:59:52,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:59:52,401 INFO L495 AbstractCegarLoop]: Abstraction has 2740 states and 7907 transitions. [2022-11-22 01:59:52,401 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) [2022-11-22 01:59:52,402 INFO L276 IsEmpty]: Start isEmpty. Operand 2740 states and 7907 transitions. [2022-11-22 01:59:52,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-22 01:59:52,405 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:52,406 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-22 01:59:52,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 01:59:52,408 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-11-22 01:59:52,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:52,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1404263239, now seen corresponding path program 1 times [2022-11-22 01:59:52,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:52,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499874347] [2022-11-22 01:59:52,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:52,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:52,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 01:59:52,434 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-22 01:59:52,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 01:59:52,453 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-22 01:59:52,454 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-22 01:59:52,454 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2022-11-22 01:59:52,454 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 31 remaining) [2022-11-22 01:59:52,455 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 31 remaining) [2022-11-22 01:59:52,455 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 31 remaining) [2022-11-22 01:59:52,455 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 31 remaining) [2022-11-22 01:59:52,456 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 31 remaining) [2022-11-22 01:59:52,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 31 remaining) [2022-11-22 01:59:52,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 31 remaining) [2022-11-22 01:59:52,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 31 remaining) [2022-11-22 01:59:52,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 31 remaining) [2022-11-22 01:59:52,458 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 31 remaining) [2022-11-22 01:59:52,459 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 31 remaining) [2022-11-22 01:59:52,459 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 31 remaining) [2022-11-22 01:59:52,459 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 31 remaining) [2022-11-22 01:59:52,459 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 31 remaining) [2022-11-22 01:59:52,460 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 31 remaining) [2022-11-22 01:59:52,460 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 31 remaining) [2022-11-22 01:59:52,460 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 31 remaining) [2022-11-22 01:59:52,460 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 31 remaining) [2022-11-22 01:59:52,461 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 31 remaining) [2022-11-22 01:59:52,461 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 31 remaining) [2022-11-22 01:59:52,461 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 31 remaining) [2022-11-22 01:59:52,461 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 31 remaining) [2022-11-22 01:59:52,462 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 31 remaining) [2022-11-22 01:59:52,462 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 31 remaining) [2022-11-22 01:59:52,463 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 31 remaining) [2022-11-22 01:59:52,464 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 31 remaining) [2022-11-22 01:59:52,464 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 31 remaining) [2022-11-22 01:59:52,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 31 remaining) [2022-11-22 01:59:52,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 31 remaining) [2022-11-22 01:59:52,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 31 remaining) [2022-11-22 01:59:52,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 01:59:52,466 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-22 01:59:52,467 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-22 01:59:52,467 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-22 01:59:52,538 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-22 01:59:52,548 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-22 01:59:52,549 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 248 places, 266 transitions, 553 flow [2022-11-22 01:59:52,549 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 248 places, 266 transitions, 553 flow [2022-11-22 01:59:52,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 248 places, 266 transitions, 553 flow [2022-11-22 01:59:52,676 INFO L130 PetriNetUnfolder]: 28/303 cut-off events. [2022-11-22 01:59:52,676 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-22 01:59:52,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 319 conditions, 303 events. 28/303 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1026 event pairs, 0 based on Foata normal form. 0/241 useless extension candidates. Maximal degree in co-relation 244. Up to 8 conditions per place. [2022-11-22 01:59:52,713 INFO L119 LiptonReduction]: Number of co-enabled transitions 42504 [2022-11-22 02:00:11,623 INFO L134 LiptonReduction]: Checked pairs total: 98691 [2022-11-22 02:00:11,624 INFO L136 LiptonReduction]: Total number of compositions: 245 [2022-11-22 02:00:11,626 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 96 places, 101 transitions, 223 flow [2022-11-22 02:00:18,238 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 131068 states, 128277 states have (on average 4.2180671515548385) internal successors, (541081), 131067 states have internal predecessors, (541081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:00:18,240 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:00:18,241 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;@2a1db34c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:00:18,241 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2022-11-22 02:00:18,559 INFO L276 IsEmpty]: Start isEmpty. Operand has 131068 states, 128277 states have (on average 4.2180671515548385) internal successors, (541081), 131067 states have internal predecessors, (541081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:00:18,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-22 02:00:18,560 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:00:18,560 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-22 02:00:18,563 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-22 02:00:18,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:00:18,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1521513106, now seen corresponding path program 1 times [2022-11-22 02:00:18,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:00:18,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671596583] [2022-11-22 02:00:18,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:18,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:00:18,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:18,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:00:18,588 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:00:18,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671596583] [2022-11-22 02:00:18,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671596583] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:00:18,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:00:18,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 02:00:18,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600501202] [2022-11-22 02:00:18,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:00:18,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-22 02:00:18,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:00:18,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-22 02:00:18,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 02:00:18,846 INFO L87 Difference]: Start difference. First operand has 131068 states, 128277 states have (on average 4.2180671515548385) internal successors, (541081), 131067 states have internal predecessors, (541081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 5.0) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:00:21,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:00:21,195 INFO L93 Difference]: Finished difference Result 68643 states and 273131 transitions. [2022-11-22 02:00:21,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-22 02:00:21,196 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 5.0) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-22 02:00:21,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:00:22,375 INFO L225 Difference]: With dead ends: 68643 [2022-11-22 02:00:22,375 INFO L226 Difference]: Without dead ends: 68643 [2022-11-22 02:00:22,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 02:00:22,378 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:00:22,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:00:22,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68643 states. [2022-11-22 02:00:25,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68643 to 68643. [2022-11-22 02:00:25,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68643 states, 68300 states have (on average 3.9989897510980965) internal successors, (273131), 68642 states have internal predecessors, (273131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:00:26,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68643 states to 68643 states and 273131 transitions. [2022-11-22 02:00:26,126 INFO L78 Accepts]: Start accepts. Automaton has 68643 states and 273131 transitions. Word has length 5 [2022-11-22 02:00:26,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:00:26,126 INFO L495 AbstractCegarLoop]: Abstraction has 68643 states and 273131 transitions. [2022-11-22 02:00:26,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 5.0) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:00:26,126 INFO L276 IsEmpty]: Start isEmpty. Operand 68643 states and 273131 transitions. [2022-11-22 02:00:26,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-22 02:00:26,127 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:00:26,127 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-22 02:00:26,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 02:00:26,127 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-22 02:00:26,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:00:26,128 INFO L85 PathProgramCache]: Analyzing trace with hash -77732594, now seen corresponding path program 1 times [2022-11-22 02:00:26,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:00:26,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384719304] [2022-11-22 02:00:26,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:26,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:00:26,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:26,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:00:26,169 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:00:26,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384719304] [2022-11-22 02:00:26,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384719304] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:00:26,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:00:26,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 02:00:26,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297566710] [2022-11-22 02:00:26,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:00:26,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:00:26,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:00:26,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:00:26,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:00:26,172 INFO L87 Difference]: Start difference. First operand 68643 states and 273131 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) [2022-11-22 02:00:27,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:00:27,594 INFO L93 Difference]: Finished difference Result 69030 states and 274532 transitions. [2022-11-22 02:00:27,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:00:27,594 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 [2022-11-22 02:00:27,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:00:28,642 INFO L225 Difference]: With dead ends: 69030 [2022-11-22 02:00:28,642 INFO L226 Difference]: Without dead ends: 69030 [2022-11-22 02:00:28,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:00:28,645 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:00:28,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 28 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 02:00:28,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69030 states. [2022-11-22 02:00:31,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69030 to 69025. [2022-11-22 02:00:31,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69025 states, 68682 states have (on average 3.99686963105326) internal successors, (274513), 69024 states have internal predecessors, (274513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:00:32,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69025 states to 69025 states and 274513 transitions. [2022-11-22 02:00:32,335 INFO L78 Accepts]: Start accepts. Automaton has 69025 states and 274513 transitions. Word has length 6 [2022-11-22 02:00:32,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:00:32,335 INFO L495 AbstractCegarLoop]: Abstraction has 69025 states and 274513 transitions. [2022-11-22 02:00:32,335 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) [2022-11-22 02:00:32,336 INFO L276 IsEmpty]: Start isEmpty. Operand 69025 states and 274513 transitions. [2022-11-22 02:00:32,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-22 02:00:32,344 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:00:32,344 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:00:32,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 02:00:32,344 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-22 02:00:32,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:00:32,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1716026304, now seen corresponding path program 1 times [2022-11-22 02:00:32,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:00:32,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184371191] [2022-11-22 02:00:32,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:32,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:00:32,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:32,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:00:32,466 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:00:32,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184371191] [2022-11-22 02:00:32,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184371191] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:00:32,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:00:32,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:00:32,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481237615] [2022-11-22 02:00:32,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:00:32,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:00:32,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:00:32,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:00:32,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:00:32,469 INFO L87 Difference]: Start difference. First operand 69025 states and 274513 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2022-11-22 02:00:33,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:00:33,411 INFO L93 Difference]: Finished difference Result 69025 states and 271653 transitions. [2022-11-22 02:00:33,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:00:33,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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 [2022-11-22 02:00:33,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:00:33,773 INFO L225 Difference]: With dead ends: 69025 [2022-11-22 02:00:33,773 INFO L226 Difference]: Without dead ends: 69025 [2022-11-22 02:00:33,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:00:33,774 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 56 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:00:33,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 38 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 02:00:34,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69025 states. [2022-11-22 02:00:36,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69025 to 69025. [2022-11-22 02:00:37,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69025 states, 68633 states have (on average 3.958052248918159) internal successors, (271653), 69024 states have internal predecessors, (271653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:00:37,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69025 states to 69025 states and 271653 transitions. [2022-11-22 02:00:37,591 INFO L78 Accepts]: Start accepts. Automaton has 69025 states and 271653 transitions. Word has length 10 [2022-11-22 02:00:37,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:00:37,591 INFO L495 AbstractCegarLoop]: Abstraction has 69025 states and 271653 transitions. [2022-11-22 02:00:37,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2022-11-22 02:00:37,591 INFO L276 IsEmpty]: Start isEmpty. Operand 69025 states and 271653 transitions. [2022-11-22 02:00:37,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-22 02:00:37,592 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:00:37,592 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:00:37,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-22 02:00:37,592 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-22 02:00:37,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:00:37,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1716167230, now seen corresponding path program 1 times [2022-11-22 02:00:37,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:00:37,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545260308] [2022-11-22 02:00:37,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:37,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:00:37,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:37,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:00:37,778 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:00:37,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545260308] [2022-11-22 02:00:37,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545260308] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:00:37,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:00:37,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:00:37,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668320428] [2022-11-22 02:00:37,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:00:37,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:00:37,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:00:37,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:00:37,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:00:37,781 INFO L87 Difference]: Start difference. First operand 69025 states and 271653 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) [2022-11-22 02:00:40,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:00:40,304 INFO L93 Difference]: Finished difference Result 74103 states and 290992 transitions. [2022-11-22 02:00:40,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:00:40,305 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 [2022-11-22 02:00:40,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:00:40,691 INFO L225 Difference]: With dead ends: 74103 [2022-11-22 02:00:40,692 INFO L226 Difference]: Without dead ends: 74103 [2022-11-22 02:00:40,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:00:40,692 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 110 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-22 02:00:40,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 96 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-22 02:00:40,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74103 states. [2022-11-22 02:00:43,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74103 to 73272. [2022-11-22 02:00:44,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73272 states, 72880 states have (on average 3.95064489571899) internal successors, (287923), 73271 states have internal predecessors, (287923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:00:44,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73272 states to 73272 states and 287923 transitions. [2022-11-22 02:00:44,453 INFO L78 Accepts]: Start accepts. Automaton has 73272 states and 287923 transitions. Word has length 10 [2022-11-22 02:00:44,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:00:44,453 INFO L495 AbstractCegarLoop]: Abstraction has 73272 states and 287923 transitions. [2022-11-22 02:00:44,453 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) [2022-11-22 02:00:44,453 INFO L276 IsEmpty]: Start isEmpty. Operand 73272 states and 287923 transitions. [2022-11-22 02:00:44,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-22 02:00:44,455 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:00:44,455 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:00:44,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-22 02:00:44,456 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-22 02:00:44,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:00:44,456 INFO L85 PathProgramCache]: Analyzing trace with hash 392299207, now seen corresponding path program 1 times [2022-11-22 02:00:44,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:00:44,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714262402] [2022-11-22 02:00:44,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:44,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:00:44,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:44,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:00:44,755 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:00:44,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714262402] [2022-11-22 02:00:44,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714262402] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:00:44,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093051584] [2022-11-22 02:00:44,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:44,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:00:44,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc6fe91-74cb-42c2-9109-18dc76b5eec5/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:00:44,761 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc6fe91-74cb-42c2-9109-18dc76b5eec5/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:00:44,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc6fe91-74cb-42c2-9109-18dc76b5eec5/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 02:00:44,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:44,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-22 02:00:44,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:00:44,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 02:00:45,102 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-22 02:00:45,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-22 02:00:45,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 02:00:45,368 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-22 02:00:45,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 02:00:45,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:00:45,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:00:45,693 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 02:00:45,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 44 treesize of output 58 [2022-11-22 02:00:45,719 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 02:00:45,720 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 8 [2022-11-22 02:00:45,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 50 [2022-11-22 02:00:45,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-22 02:00:45,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-22 02:00:45,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 37 [2022-11-22 02:00:45,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2022-11-22 02:00:46,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:00:46,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093051584] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:00:46,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1302960334] [2022-11-22 02:00:46,358 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-22 02:00:46,366 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:00:46,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2022-11-22 02:00:46,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416168699] [2022-11-22 02:00:46,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:00:46,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-22 02:00:46,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:00:46,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-22 02:00:46,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-11-22 02:00:46,370 INFO L87 Difference]: Start difference. First operand 73272 states and 287923 transitions. Second operand has 16 states, 15 states have (on average 2.2) internal successors, (33), 15 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:00:56,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:00:56,099 INFO L93 Difference]: Finished difference Result 115354 states and 436540 transitions. [2022-11-22 02:00:56,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-22 02:00:56,100 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.2) internal successors, (33), 15 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-22 02:00:56,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:00:56,821 INFO L225 Difference]: With dead ends: 115354 [2022-11-22 02:00:56,821 INFO L226 Difference]: Without dead ends: 115354 [2022-11-22 02:00:56,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=176, Invalid=634, Unknown=2, NotChecked=0, Total=812 [2022-11-22 02:00:56,822 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 606 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 1982 mSolverCounterSat, 80 mSolverCounterUnsat, 170 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 2232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1982 IncrementalHoareTripleChecker+Invalid, 170 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:00:56,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [606 Valid, 396 Invalid, 2232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1982 Invalid, 170 Unknown, 0 Unchecked, 6.6s Time] [2022-11-22 02:00:57,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115354 states. [2022-11-22 02:01:00,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115354 to 94304. [2022-11-22 02:01:00,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94304 states, 93912 states have (on average 3.9755409319362807) internal successors, (373351), 94303 states have internal predecessors, (373351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:01:02,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94304 states to 94304 states and 373351 transitions. [2022-11-22 02:01:02,026 INFO L78 Accepts]: Start accepts. Automaton has 94304 states and 373351 transitions. Word has length 13 [2022-11-22 02:01:02,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:01:02,028 INFO L495 AbstractCegarLoop]: Abstraction has 94304 states and 373351 transitions. [2022-11-22 02:01:02,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.2) internal successors, (33), 15 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:01:02,028 INFO L276 IsEmpty]: Start isEmpty. Operand 94304 states and 373351 transitions. [2022-11-22 02:01:02,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-22 02:01:02,043 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:01:02,044 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:01:02,057 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc6fe91-74cb-42c2-9109-18dc76b5eec5/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-22 02:01:02,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc6fe91-74cb-42c2-9109-18dc76b5eec5/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-22 02:01:02,260 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-22 02:01:02,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:01:02,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1680667918, now seen corresponding path program 1 times [2022-11-22 02:01:02,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:01:02,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539649010] [2022-11-22 02:01:02,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:01:02,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:01:02,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:01:02,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 02:01:02,366 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:01:02,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539649010] [2022-11-22 02:01:02,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539649010] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:01:02,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:01:02,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:01:02,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904228733] [2022-11-22 02:01:02,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:01:02,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:01:02,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:01:02,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:01:02,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:01:02,370 INFO L87 Difference]: Start difference. First operand 94304 states and 373351 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:01:03,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:01:03,189 INFO L93 Difference]: Finished difference Result 66891 states and 268433 transitions. [2022-11-22 02:01:03,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 02:01:03,190 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-22 02:01:03,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:01:03,530 INFO L225 Difference]: With dead ends: 66891 [2022-11-22 02:01:03,530 INFO L226 Difference]: Without dead ends: 66891 [2022-11-22 02:01:03,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:01:03,531 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 78 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:01:03,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 46 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 02:01:04,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66891 states. [2022-11-22 02:01:07,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66891 to 66861. [2022-11-22 02:01:07,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66861 states, 66711 states have (on average 4.021285844913133) internal successors, (268264), 66860 states have internal predecessors, (268264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:01:07,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66861 states to 66861 states and 268264 transitions. [2022-11-22 02:01:07,606 INFO L78 Accepts]: Start accepts. Automaton has 66861 states and 268264 transitions. Word has length 14 [2022-11-22 02:01:07,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:01:07,606 INFO L495 AbstractCegarLoop]: Abstraction has 66861 states and 268264 transitions. [2022-11-22 02:01:07,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:01:07,606 INFO L276 IsEmpty]: Start isEmpty. Operand 66861 states and 268264 transitions. [2022-11-22 02:01:07,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-22 02:01:07,607 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:01:07,607 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:01:07,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-22 02:01:07,607 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-22 02:01:07,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:01:07,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1677948366, now seen corresponding path program 1 times [2022-11-22 02:01:07,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:01:07,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986634320] [2022-11-22 02:01:07,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:01:07,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:01:07,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:01:07,808 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 02:01:07,808 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:01:07,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986634320] [2022-11-22 02:01:07,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986634320] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:01:07,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:01:07,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:01:07,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120692290] [2022-11-22 02:01:07,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:01:07,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:01:07,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:01:07,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:01:07,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:01:07,810 INFO L87 Difference]: Start difference. First operand 66861 states and 268264 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:01:08,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:01:08,986 INFO L93 Difference]: Finished difference Result 70185 states and 281111 transitions. [2022-11-22 02:01:08,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:01:08,987 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-22 02:01:08,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted.