./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/systemc/pc_sfifo_3.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a 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_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/pc_sfifo_3.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur --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 677126e8d6773c92cc337bfe0a3ec155f49f784424155f33a8c9c24ee0a42113 --- 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-38b53e6 [2022-11-25 22:18:33,613 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 22:18:33,615 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 22:18:33,645 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 22:18:33,645 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 22:18:33,646 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 22:18:33,648 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 22:18:33,649 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 22:18:33,651 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 22:18:33,652 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 22:18:33,653 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 22:18:33,654 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 22:18:33,655 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 22:18:33,656 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 22:18:33,657 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 22:18:33,658 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 22:18:33,659 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 22:18:33,660 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 22:18:33,662 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 22:18:33,664 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 22:18:33,665 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 22:18:33,667 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 22:18:33,668 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 22:18:33,669 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 22:18:33,673 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 22:18:33,674 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 22:18:33,674 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 22:18:33,675 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 22:18:33,675 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 22:18:33,676 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 22:18:33,677 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 22:18:33,678 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 22:18:33,679 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 22:18:33,679 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 22:18:33,681 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 22:18:33,681 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 22:18:33,682 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 22:18:33,682 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 22:18:33,682 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 22:18:33,683 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 22:18:33,684 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 22:18:33,685 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-25 22:18:33,713 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 22:18:33,713 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 22:18:33,713 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 22:18:33,713 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 22:18:33,714 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 22:18:33,714 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 22:18:33,715 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 22:18:33,715 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 22:18:33,715 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 22:18:33,715 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 22:18:33,715 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 22:18:33,715 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 22:18:33,716 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 22:18:33,716 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 22:18:33,716 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 22:18:33,716 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 22:18:33,716 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 22:18:33,717 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 22:18:33,717 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 22:18:33,718 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 22:18:33,718 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 22:18:33,718 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 22:18:33,718 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 22:18:33,718 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 22:18:33,718 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 22:18:33,719 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 22:18:33,719 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 22:18:33,719 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 22:18:33,719 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 22:18:33,719 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 22:18:33,719 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 22:18:33,720 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 22:18:33,720 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 22:18:33,720 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 22:18:33,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:18:33,720 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 22:18:33,721 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 22:18:33,721 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 22:18:33,721 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 22:18:33,721 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 22:18:33,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 22:18:33,721 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 22:18:33,722 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 22:18:33,722 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_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 677126e8d6773c92cc337bfe0a3ec155f49f784424155f33a8c9c24ee0a42113 [2022-11-25 22:18:33,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 22:18:34,000 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 22:18:34,004 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 22:18:34,005 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 22:18:34,006 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 22:18:34,007 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/systemc/pc_sfifo_3.cil.c [2022-11-25 22:18:37,110 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 22:18:37,387 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 22:18:37,388 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/sv-benchmarks/c/systemc/pc_sfifo_3.cil.c [2022-11-25 22:18:37,401 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/data/5379d489a/cb2d0a45893047ef8d2708d484b328e5/FLAG7df48507b [2022-11-25 22:18:37,422 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/data/5379d489a/cb2d0a45893047ef8d2708d484b328e5 [2022-11-25 22:18:37,428 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 22:18:37,431 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 22:18:37,433 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 22:18:37,434 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 22:18:37,439 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 22:18:37,440 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:18:37" (1/1) ... [2022-11-25 22:18:37,441 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ff1818e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:18:37, skipping insertion in model container [2022-11-25 22:18:37,441 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:18:37" (1/1) ... [2022-11-25 22:18:37,450 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 22:18:37,490 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 22:18:37,648 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_6307afae-a6bc-433a-b2fb-e145226f5161/sv-benchmarks/c/systemc/pc_sfifo_3.cil.c[640,653] [2022-11-25 22:18:37,704 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:18:37,716 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 22:18:37,728 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_6307afae-a6bc-433a-b2fb-e145226f5161/sv-benchmarks/c/systemc/pc_sfifo_3.cil.c[640,653] [2022-11-25 22:18:37,761 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:18:37,782 INFO L208 MainTranslator]: Completed translation [2022-11-25 22:18:37,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:18:37 WrapperNode [2022-11-25 22:18:37,783 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 22:18:37,784 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 22:18:37,784 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 22:18:37,784 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 22:18:37,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:18:37" (1/1) ... [2022-11-25 22:18:37,802 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:18:37" (1/1) ... [2022-11-25 22:18:37,826 INFO L138 Inliner]: procedures = 31, calls = 35, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 231 [2022-11-25 22:18:37,827 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 22:18:37,827 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 22:18:37,827 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 22:18:37,828 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 22:18:37,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:18:37" (1/1) ... [2022-11-25 22:18:37,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:18:37" (1/1) ... [2022-11-25 22:18:37,840 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:18:37" (1/1) ... [2022-11-25 22:18:37,841 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:18:37" (1/1) ... [2022-11-25 22:18:37,846 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:18:37" (1/1) ... [2022-11-25 22:18:37,853 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:18:37" (1/1) ... [2022-11-25 22:18:37,855 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:18:37" (1/1) ... [2022-11-25 22:18:37,856 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:18:37" (1/1) ... [2022-11-25 22:18:37,860 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 22:18:37,861 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 22:18:37,861 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 22:18:37,862 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 22:18:37,863 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:18:37" (1/1) ... [2022-11-25 22:18:37,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:18:37,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:18:37,906 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 22:18:37,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 22:18:37,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 22:18:37,947 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-11-25 22:18:37,947 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-11-25 22:18:37,947 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-11-25 22:18:37,947 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-11-25 22:18:37,948 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-25 22:18:37,948 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-25 22:18:37,948 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-25 22:18:37,948 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-25 22:18:37,948 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-25 22:18:37,948 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-25 22:18:37,948 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-25 22:18:37,949 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-25 22:18:37,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 22:18:37,949 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-25 22:18:37,949 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-25 22:18:37,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 22:18:37,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 22:18:37,950 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-11-25 22:18:37,950 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-11-25 22:18:38,035 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 22:18:38,038 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 22:18:38,483 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##54: assume !(1 == ~q_free~0); [2022-11-25 22:18:38,484 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##53: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0#1; [2022-11-25 22:18:38,504 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 22:18:38,755 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 22:18:38,755 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-25 22:18:38,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:18:38 BoogieIcfgContainer [2022-11-25 22:18:38,758 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 22:18:38,760 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 22:18:38,760 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 22:18:38,765 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 22:18:38,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 10:18:37" (1/3) ... [2022-11-25 22:18:38,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68f69785 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:18:38, skipping insertion in model container [2022-11-25 22:18:38,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:18:37" (2/3) ... [2022-11-25 22:18:38,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68f69785 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:18:38, skipping insertion in model container [2022-11-25 22:18:38,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:18:38" (3/3) ... [2022-11-25 22:18:38,771 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil.c [2022-11-25 22:18:38,792 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 22:18:38,792 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-25 22:18:38,854 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 22:18:38,863 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;@538b8c61, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 22:18:38,863 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-25 22:18:38,869 INFO L276 IsEmpty]: Start isEmpty. Operand has 92 states, 61 states have (on average 1.5245901639344261) internal successors, (93), 70 states have internal predecessors, (93), 16 states have call successors, (16), 8 states have call predecessors, (16), 8 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-25 22:18:38,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-25 22:18:38,883 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:18:38,885 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:18:38,886 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-25 22:18:38,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:18:38,896 INFO L85 PathProgramCache]: Analyzing trace with hash 2103512677, now seen corresponding path program 1 times [2022-11-25 22:18:38,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:18:38,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939284844] [2022-11-25 22:18:38,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:18:38,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:18:39,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:18:39,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:18:39,286 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:18:39,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939284844] [2022-11-25 22:18:39,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939284844] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:18:39,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:18:39,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 22:18:39,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983949163] [2022-11-25 22:18:39,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:18:39,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 22:18:39,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:18:39,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 22:18:39,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:18:39,356 INFO L87 Difference]: Start difference. First operand has 92 states, 61 states have (on average 1.5245901639344261) internal successors, (93), 70 states have internal predecessors, (93), 16 states have call successors, (16), 8 states have call predecessors, (16), 8 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 4 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-25 22:18:39,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:18:39,773 INFO L93 Difference]: Finished difference Result 333 states and 461 transitions. [2022-11-25 22:18:39,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 22:18:39,775 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 4 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 41 [2022-11-25 22:18:39,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:18:39,785 INFO L225 Difference]: With dead ends: 333 [2022-11-25 22:18:39,785 INFO L226 Difference]: Without dead ends: 231 [2022-11-25 22:18:39,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:18:39,793 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 191 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 22:18:39,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 342 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 22:18:39,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-11-25 22:18:39,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 216. [2022-11-25 22:18:39,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 155 states have (on average 1.3935483870967742) internal successors, (216), 161 states have internal predecessors, (216), 34 states have call successors, (34), 21 states have call predecessors, (34), 21 states have return successors, (37), 34 states have call predecessors, (37), 34 states have call successors, (37) [2022-11-25 22:18:39,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 287 transitions. [2022-11-25 22:18:39,885 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 287 transitions. Word has length 41 [2022-11-25 22:18:39,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:18:39,886 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 287 transitions. [2022-11-25 22:18:39,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 4 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-25 22:18:39,887 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 287 transitions. [2022-11-25 22:18:39,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-25 22:18:39,889 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:18:39,889 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:18:39,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 22:18:39,890 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-25 22:18:39,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:18:39,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1386688987, now seen corresponding path program 1 times [2022-11-25 22:18:39,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:18:39,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348880303] [2022-11-25 22:18:39,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:18:39,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:18:39,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:18:40,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:18:40,055 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:18:40,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348880303] [2022-11-25 22:18:40,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348880303] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:18:40,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:18:40,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 22:18:40,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870053541] [2022-11-25 22:18:40,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:18:40,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 22:18:40,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:18:40,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 22:18:40,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:18:40,062 INFO L87 Difference]: Start difference. First operand 216 states and 287 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-25 22:18:40,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:18:40,789 INFO L93 Difference]: Finished difference Result 823 states and 1089 transitions. [2022-11-25 22:18:40,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 22:18:40,790 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 42 [2022-11-25 22:18:40,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:18:40,798 INFO L225 Difference]: With dead ends: 823 [2022-11-25 22:18:40,799 INFO L226 Difference]: Without dead ends: 578 [2022-11-25 22:18:40,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-25 22:18:40,808 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 589 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 22:18:40,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [597 Valid, 745 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 22:18:40,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2022-11-25 22:18:40,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 482. [2022-11-25 22:18:40,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 345 states have (on average 1.3159420289855073) internal successors, (454), 352 states have internal predecessors, (454), 76 states have call successors, (76), 51 states have call predecessors, (76), 55 states have return successors, (84), 79 states have call predecessors, (84), 76 states have call successors, (84) [2022-11-25 22:18:40,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 614 transitions. [2022-11-25 22:18:40,934 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 614 transitions. Word has length 42 [2022-11-25 22:18:40,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:18:40,934 INFO L495 AbstractCegarLoop]: Abstraction has 482 states and 614 transitions. [2022-11-25 22:18:40,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-25 22:18:40,935 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 614 transitions. [2022-11-25 22:18:40,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-25 22:18:40,938 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:18:40,939 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:18:40,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 22:18:40,940 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-25 22:18:40,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:18:40,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1417503400, now seen corresponding path program 1 times [2022-11-25 22:18:40,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:18:40,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030467975] [2022-11-25 22:18:40,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:18:40,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:18:40,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:18:41,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:18:41,287 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:18:41,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030467975] [2022-11-25 22:18:41,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030467975] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:18:41,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:18:41,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 22:18:41,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012792725] [2022-11-25 22:18:41,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:18:41,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 22:18:41,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:18:41,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 22:18:41,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-25 22:18:41,291 INFO L87 Difference]: Start difference. First operand 482 states and 614 transitions. Second operand has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-25 22:18:41,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:18:41,832 INFO L93 Difference]: Finished difference Result 1329 states and 1689 transitions. [2022-11-25 22:18:41,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 22:18:41,833 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 43 [2022-11-25 22:18:41,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:18:41,843 INFO L225 Difference]: With dead ends: 1329 [2022-11-25 22:18:41,843 INFO L226 Difference]: Without dead ends: 853 [2022-11-25 22:18:41,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2022-11-25 22:18:41,851 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 254 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 22:18:41,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 337 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 22:18:41,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2022-11-25 22:18:41,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 789. [2022-11-25 22:18:41,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 563 states have (on average 1.3019538188277087) internal successors, (733), 572 states have internal predecessors, (733), 126 states have call successors, (126), 86 states have call predecessors, (126), 94 states have return successors, (142), 131 states have call predecessors, (142), 126 states have call successors, (142) [2022-11-25 22:18:41,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1001 transitions. [2022-11-25 22:18:41,969 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1001 transitions. Word has length 43 [2022-11-25 22:18:41,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:18:41,970 INFO L495 AbstractCegarLoop]: Abstraction has 789 states and 1001 transitions. [2022-11-25 22:18:41,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-25 22:18:41,971 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1001 transitions. [2022-11-25 22:18:41,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-25 22:18:41,977 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:18:41,977 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:18:41,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 22:18:41,979 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-25 22:18:41,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:18:41,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1883878625, now seen corresponding path program 1 times [2022-11-25 22:18:41,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:18:41,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434510182] [2022-11-25 22:18:41,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:18:41,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:18:42,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:18:42,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:18:42,099 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:18:42,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434510182] [2022-11-25 22:18:42,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434510182] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:18:42,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:18:42,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:18:42,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310400029] [2022-11-25 22:18:42,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:18:42,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:18:42,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:18:42,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:18:42,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:18:42,101 INFO L87 Difference]: Start difference. First operand 789 states and 1001 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 22:18:42,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:18:42,264 INFO L93 Difference]: Finished difference Result 1509 states and 1931 transitions. [2022-11-25 22:18:42,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:18:42,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 44 [2022-11-25 22:18:42,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:18:42,270 INFO L225 Difference]: With dead ends: 1509 [2022-11-25 22:18:42,270 INFO L226 Difference]: Without dead ends: 725 [2022-11-25 22:18:42,272 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 [2022-11-25 22:18:42,273 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 83 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:18:42,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 190 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 22:18:42,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2022-11-25 22:18:42,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 605. [2022-11-25 22:18:42,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 427 states have (on average 1.2505854800936769) internal successors, (534), 431 states have internal predecessors, (534), 104 states have call successors, (104), 70 states have call predecessors, (104), 70 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) [2022-11-25 22:18:42,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 742 transitions. [2022-11-25 22:18:42,347 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 742 transitions. Word has length 44 [2022-11-25 22:18:42,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:18:42,347 INFO L495 AbstractCegarLoop]: Abstraction has 605 states and 742 transitions. [2022-11-25 22:18:42,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 22:18:42,348 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 742 transitions. [2022-11-25 22:18:42,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-25 22:18:42,349 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:18:42,349 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:18:42,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 22:18:42,349 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-25 22:18:42,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:18:42,350 INFO L85 PathProgramCache]: Analyzing trace with hash -621296856, now seen corresponding path program 1 times [2022-11-25 22:18:42,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:18:42,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66905746] [2022-11-25 22:18:42,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:18:42,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:18:42,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:18:42,528 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 22:18:42,528 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:18:42,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66905746] [2022-11-25 22:18:42,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66905746] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:18:42,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:18:42,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 22:18:42,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556079038] [2022-11-25 22:18:42,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:18:42,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 22:18:42,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:18:42,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 22:18:42,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-25 22:18:42,541 INFO L87 Difference]: Start difference. First operand 605 states and 742 transitions. Second operand has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 4 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-25 22:18:43,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:18:43,020 INFO L93 Difference]: Finished difference Result 1528 states and 1865 transitions. [2022-11-25 22:18:43,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 22:18:43,021 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 4 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 56 [2022-11-25 22:18:43,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:18:43,026 INFO L225 Difference]: With dead ends: 1528 [2022-11-25 22:18:43,027 INFO L226 Difference]: Without dead ends: 929 [2022-11-25 22:18:43,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2022-11-25 22:18:43,029 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 236 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 22:18:43,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 352 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 22:18:43,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2022-11-25 22:18:43,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 890. [2022-11-25 22:18:43,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 890 states, 627 states have (on average 1.2360446570972887) internal successors, (775), 631 states have internal predecessors, (775), 154 states have call successors, (154), 105 states have call predecessors, (154), 105 states have return successors, (154), 154 states have call predecessors, (154), 154 states have call successors, (154) [2022-11-25 22:18:43,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 1083 transitions. [2022-11-25 22:18:43,136 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 1083 transitions. Word has length 56 [2022-11-25 22:18:43,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:18:43,137 INFO L495 AbstractCegarLoop]: Abstraction has 890 states and 1083 transitions. [2022-11-25 22:18:43,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 4 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-25 22:18:43,138 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 1083 transitions. [2022-11-25 22:18:43,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-25 22:18:43,141 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:18:43,142 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:18:43,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 22:18:43,142 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-25 22:18:43,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:18:43,143 INFO L85 PathProgramCache]: Analyzing trace with hash 2141230225, now seen corresponding path program 1 times [2022-11-25 22:18:43,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:18:43,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020512341] [2022-11-25 22:18:43,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:18:43,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:18:43,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:18:43,253 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 22:18:43,253 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:18:43,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020512341] [2022-11-25 22:18:43,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020512341] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:18:43,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:18:43,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 22:18:43,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814507690] [2022-11-25 22:18:43,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:18:43,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 22:18:43,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:18:43,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 22:18:43,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:18:43,255 INFO L87 Difference]: Start difference. First operand 890 states and 1083 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-25 22:18:43,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:18:43,566 INFO L93 Difference]: Finished difference Result 2196 states and 2709 transitions. [2022-11-25 22:18:43,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 22:18:43,567 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 57 [2022-11-25 22:18:43,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:18:43,576 INFO L225 Difference]: With dead ends: 2196 [2022-11-25 22:18:43,577 INFO L226 Difference]: Without dead ends: 1482 [2022-11-25 22:18:43,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-25 22:18:43,581 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 259 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:18:43,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 382 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:18:43,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2022-11-25 22:18:43,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 1293. [2022-11-25 22:18:43,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1293 states, 910 states have (on average 1.2263736263736265) internal successors, (1116), 914 states have internal predecessors, (1116), 223 states have call successors, (223), 156 states have call predecessors, (223), 156 states have return successors, (241), 223 states have call predecessors, (241), 223 states have call successors, (241) [2022-11-25 22:18:43,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1293 states to 1293 states and 1580 transitions. [2022-11-25 22:18:43,743 INFO L78 Accepts]: Start accepts. Automaton has 1293 states and 1580 transitions. Word has length 57 [2022-11-25 22:18:43,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:18:43,743 INFO L495 AbstractCegarLoop]: Abstraction has 1293 states and 1580 transitions. [2022-11-25 22:18:43,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-25 22:18:43,744 INFO L276 IsEmpty]: Start isEmpty. Operand 1293 states and 1580 transitions. [2022-11-25 22:18:43,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-25 22:18:43,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:18:43,745 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:18:43,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 22:18:43,746 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-25 22:18:43,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:18:43,746 INFO L85 PathProgramCache]: Analyzing trace with hash -194522902, now seen corresponding path program 1 times [2022-11-25 22:18:43,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:18:43,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884468798] [2022-11-25 22:18:43,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:18:43,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:18:43,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:18:44,131 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-25 22:18:44,131 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:18:44,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884468798] [2022-11-25 22:18:44,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884468798] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:18:44,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612696624] [2022-11-25 22:18:44,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:18:44,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:18:44,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:18:44,139 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:18:44,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 22:18:44,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:18:44,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 22:18:44,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:18:44,533 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-25 22:18:44,533 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:18:44,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612696624] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:18:44,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:18:44,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [14] total 15 [2022-11-25 22:18:44,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123328713] [2022-11-25 22:18:44,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:18:44,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:18:44,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:18:44,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:18:44,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-25 22:18:44,536 INFO L87 Difference]: Start difference. First operand 1293 states and 1580 transitions. Second operand has 3 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-25 22:18:44,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:18:44,709 INFO L93 Difference]: Finished difference Result 1293 states and 1580 transitions. [2022-11-25 22:18:44,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:18:44,710 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 74 [2022-11-25 22:18:44,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:18:44,717 INFO L225 Difference]: With dead ends: 1293 [2022-11-25 22:18:44,717 INFO L226 Difference]: Without dead ends: 1292 [2022-11-25 22:18:44,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-25 22:18:44,722 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 49 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:18:44,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 83 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 22:18:44,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2022-11-25 22:18:44,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 1292. [2022-11-25 22:18:44,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1292 states, 910 states have (on average 1.2032967032967032) internal successors, (1095), 913 states have internal predecessors, (1095), 223 states have call successors, (223), 156 states have call predecessors, (223), 156 states have return successors, (241), 223 states have call predecessors, (241), 223 states have call successors, (241) [2022-11-25 22:18:44,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1292 states to 1292 states and 1559 transitions. [2022-11-25 22:18:44,897 INFO L78 Accepts]: Start accepts. Automaton has 1292 states and 1559 transitions. Word has length 74 [2022-11-25 22:18:44,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:18:44,897 INFO L495 AbstractCegarLoop]: Abstraction has 1292 states and 1559 transitions. [2022-11-25 22:18:44,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-25 22:18:44,898 INFO L276 IsEmpty]: Start isEmpty. Operand 1292 states and 1559 transitions. [2022-11-25 22:18:44,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-25 22:18:44,898 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:18:44,899 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:18:44,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 22:18:45,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:18:45,109 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-25 22:18:45,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:18:45,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1735242335, now seen corresponding path program 1 times [2022-11-25 22:18:45,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:18:45,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935937976] [2022-11-25 22:18:45,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:18:45,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:18:45,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:18:45,470 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-25 22:18:45,471 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:18:45,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935937976] [2022-11-25 22:18:45,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935937976] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:18:45,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203438110] [2022-11-25 22:18:45,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:18:45,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:18:45,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:18:45,473 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:18:45,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 22:18:45,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:18:45,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 22:18:45,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:18:45,740 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-25 22:18:45,740 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:18:45,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203438110] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:18:45,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:18:45,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [14] total 15 [2022-11-25 22:18:45,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447593611] [2022-11-25 22:18:45,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:18:45,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:18:45,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:18:45,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:18:45,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-25 22:18:45,742 INFO L87 Difference]: Start difference. First operand 1292 states and 1559 transitions. Second operand has 3 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-25 22:18:46,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:18:46,031 INFO L93 Difference]: Finished difference Result 3820 states and 4594 transitions. [2022-11-25 22:18:46,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:18:46,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 75 [2022-11-25 22:18:46,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:18:46,043 INFO L225 Difference]: With dead ends: 3820 [2022-11-25 22:18:46,043 INFO L226 Difference]: Without dead ends: 2534 [2022-11-25 22:18:46,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-25 22:18:46,048 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 47 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:18:46,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 184 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 22:18:46,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2534 states. [2022-11-25 22:18:46,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2534 to 2532. [2022-11-25 22:18:46,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2532 states, 1776 states have (on average 1.1728603603603605) internal successors, (2083), 1778 states have internal predecessors, (2083), 442 states have call successors, (442), 312 states have call predecessors, (442), 312 states have return successors, (478), 442 states have call predecessors, (478), 442 states have call successors, (478) [2022-11-25 22:18:46,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2532 states to 2532 states and 3003 transitions. [2022-11-25 22:18:46,344 INFO L78 Accepts]: Start accepts. Automaton has 2532 states and 3003 transitions. Word has length 75 [2022-11-25 22:18:46,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:18:46,345 INFO L495 AbstractCegarLoop]: Abstraction has 2532 states and 3003 transitions. [2022-11-25 22:18:46,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-25 22:18:46,345 INFO L276 IsEmpty]: Start isEmpty. Operand 2532 states and 3003 transitions. [2022-11-25 22:18:46,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-25 22:18:46,353 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:18:46,353 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:18:46,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 22:18:46,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:18:46,564 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-25 22:18:46,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:18:46,565 INFO L85 PathProgramCache]: Analyzing trace with hash 145280184, now seen corresponding path program 1 times [2022-11-25 22:18:46,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:18:46,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301204921] [2022-11-25 22:18:46,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:18:46,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:18:46,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:18:46,846 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 17 proven. 9 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-25 22:18:46,846 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:18:46,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301204921] [2022-11-25 22:18:46,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301204921] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:18:46,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106924902] [2022-11-25 22:18:46,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:18:46,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:18:46,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:18:46,849 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:18:46,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 22:18:46,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:18:46,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 22:18:46,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:18:47,158 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-25 22:18:47,158 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:18:47,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106924902] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:18:47,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:18:47,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [10] total 11 [2022-11-25 22:18:47,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079459351] [2022-11-25 22:18:47,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:18:47,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:18:47,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:18:47,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:18:47,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-25 22:18:47,161 INFO L87 Difference]: Start difference. First operand 2532 states and 3003 transitions. Second operand has 3 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-25 22:18:47,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:18:47,406 INFO L93 Difference]: Finished difference Result 2532 states and 3003 transitions. [2022-11-25 22:18:47,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:18:47,406 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 104 [2022-11-25 22:18:47,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:18:47,416 INFO L225 Difference]: With dead ends: 2532 [2022-11-25 22:18:47,417 INFO L226 Difference]: Without dead ends: 2531 [2022-11-25 22:18:47,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-25 22:18:47,421 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 30 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:18:47,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 83 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 22:18:47,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2531 states. [2022-11-25 22:18:47,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2531 to 2531. [2022-11-25 22:18:47,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2531 states, 1776 states have (on average 1.169481981981982) internal successors, (2077), 1777 states have internal predecessors, (2077), 442 states have call successors, (442), 312 states have call predecessors, (442), 312 states have return successors, (478), 442 states have call predecessors, (478), 442 states have call successors, (478) [2022-11-25 22:18:47,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2531 states to 2531 states and 2997 transitions. [2022-11-25 22:18:47,705 INFO L78 Accepts]: Start accepts. Automaton has 2531 states and 2997 transitions. Word has length 104 [2022-11-25 22:18:47,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:18:47,706 INFO L495 AbstractCegarLoop]: Abstraction has 2531 states and 2997 transitions. [2022-11-25 22:18:47,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-25 22:18:47,707 INFO L276 IsEmpty]: Start isEmpty. Operand 2531 states and 2997 transitions. [2022-11-25 22:18:47,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-25 22:18:47,711 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:18:47,711 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:18:47,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 22:18:47,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:18:47,916 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-25 22:18:47,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:18:47,917 INFO L85 PathProgramCache]: Analyzing trace with hash 208718642, now seen corresponding path program 1 times [2022-11-25 22:18:47,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:18:47,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356998234] [2022-11-25 22:18:47,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:18:47,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:18:47,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:18:48,207 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 17 proven. 9 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-25 22:18:48,208 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:18:48,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356998234] [2022-11-25 22:18:48,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356998234] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:18:48,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393167069] [2022-11-25 22:18:48,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:18:48,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:18:48,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:18:48,210 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:18:48,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 22:18:48,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:18:48,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 22:18:48,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:18:48,498 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-25 22:18:48,498 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:18:48,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393167069] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:18:48,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:18:48,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [10] total 11 [2022-11-25 22:18:48,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678445373] [2022-11-25 22:18:48,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:18:48,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:18:48,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:18:48,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:18:48,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-25 22:18:48,500 INFO L87 Difference]: Start difference. First operand 2531 states and 2997 transitions. Second operand has 3 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-25 22:18:49,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:18:49,058 INFO L93 Difference]: Finished difference Result 4722 states and 5601 transitions. [2022-11-25 22:18:49,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:18:49,059 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 105 [2022-11-25 22:18:49,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:18:49,080 INFO L225 Difference]: With dead ends: 4722 [2022-11-25 22:18:49,080 INFO L226 Difference]: Without dead ends: 4721 [2022-11-25 22:18:49,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-25 22:18:49,083 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 28 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:18:49,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 169 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:18:49,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4721 states. [2022-11-25 22:18:49,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4721 to 4721. [2022-11-25 22:18:49,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4721 states, 3318 states have (on average 1.1702833031946955) internal successors, (3883), 3319 states have internal predecessors, (3883), 820 states have call successors, (820), 582 states have call predecessors, (820), 582 states have return successors, (892), 820 states have call predecessors, (892), 820 states have call successors, (892) [2022-11-25 22:18:49,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4721 states to 4721 states and 5595 transitions. [2022-11-25 22:18:49,605 INFO L78 Accepts]: Start accepts. Automaton has 4721 states and 5595 transitions. Word has length 105 [2022-11-25 22:18:49,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:18:49,605 INFO L495 AbstractCegarLoop]: Abstraction has 4721 states and 5595 transitions. [2022-11-25 22:18:49,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-25 22:18:49,606 INFO L276 IsEmpty]: Start isEmpty. Operand 4721 states and 5595 transitions. [2022-11-25 22:18:49,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-11-25 22:18:49,613 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:18:49,613 INFO L195 NwaCegarLoop]: trace histogram [9, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:18:49,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 22:18:49,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-25 22:18:49,819 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-25 22:18:49,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:18:49,820 INFO L85 PathProgramCache]: Analyzing trace with hash 621563487, now seen corresponding path program 1 times [2022-11-25 22:18:49,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:18:49,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449473385] [2022-11-25 22:18:49,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:18:49,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:18:49,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:18:49,930 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 46 proven. 6 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-11-25 22:18:49,931 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:18:49,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449473385] [2022-11-25 22:18:49,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449473385] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:18:49,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27170790] [2022-11-25 22:18:49,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:18:49,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:18:49,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:18:49,933 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:18:49,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 22:18:50,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:18:50,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 22:18:50,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:18:50,234 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-11-25 22:18:50,234 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:18:50,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27170790] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:18:50,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:18:50,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-11-25 22:18:50,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247455858] [2022-11-25 22:18:50,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:18:50,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:18:50,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:18:50,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:18:50,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:18:50,239 INFO L87 Difference]: Start difference. First operand 4721 states and 5595 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-25 22:18:51,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:18:51,231 INFO L93 Difference]: Finished difference Result 12480 states and 14924 transitions. [2022-11-25 22:18:51,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:18:51,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 169 [2022-11-25 22:18:51,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:18:51,281 INFO L225 Difference]: With dead ends: 12480 [2022-11-25 22:18:51,281 INFO L226 Difference]: Without dead ends: 9319 [2022-11-25 22:18:51,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:18:51,292 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 41 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:18:51,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 174 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 22:18:51,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9319 states. [2022-11-25 22:18:52,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9319 to 9318. [2022-11-25 22:18:52,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9318 states, 6556 states have (on average 1.1644295302013423) internal successors, (7634), 6557 states have internal predecessors, (7634), 1597 states have call successors, (1597), 1164 states have call predecessors, (1597), 1164 states have return successors, (1729), 1597 states have call predecessors, (1729), 1597 states have call successors, (1729) [2022-11-25 22:18:52,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9318 states to 9318 states and 10960 transitions. [2022-11-25 22:18:52,324 INFO L78 Accepts]: Start accepts. Automaton has 9318 states and 10960 transitions. Word has length 169 [2022-11-25 22:18:52,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:18:52,324 INFO L495 AbstractCegarLoop]: Abstraction has 9318 states and 10960 transitions. [2022-11-25 22:18:52,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-25 22:18:52,325 INFO L276 IsEmpty]: Start isEmpty. Operand 9318 states and 10960 transitions. [2022-11-25 22:18:52,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-11-25 22:18:52,332 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:18:52,332 INFO L195 NwaCegarLoop]: trace histogram [9, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:18:52,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 22:18:52,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-25 22:18:52,544 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-25 22:18:52,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:18:52,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1145098526, now seen corresponding path program 1 times [2022-11-25 22:18:52,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:18:52,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403521080] [2022-11-25 22:18:52,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:18:52,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:18:52,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:18:52,928 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 41 proven. 19 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-11-25 22:18:52,928 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:18:52,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403521080] [2022-11-25 22:18:52,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403521080] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:18:52,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751174014] [2022-11-25 22:18:52,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:18:52,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:18:52,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:18:52,930 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:18:52,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 22:18:53,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:18:53,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 578 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 22:18:53,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:18:53,194 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-11-25 22:18:53,194 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:18:53,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751174014] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:18:53,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:18:53,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [10] total 11 [2022-11-25 22:18:53,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213710226] [2022-11-25 22:18:53,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:18:53,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:18:53,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:18:53,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:18:53,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-25 22:18:53,198 INFO L87 Difference]: Start difference. First operand 9318 states and 10960 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-25 22:18:54,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:18:54,208 INFO L93 Difference]: Finished difference Result 17972 states and 21184 transitions. [2022-11-25 22:18:54,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:18:54,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 170 [2022-11-25 22:18:54,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:18:54,265 INFO L225 Difference]: With dead ends: 17972 [2022-11-25 22:18:54,265 INFO L226 Difference]: Without dead ends: 9319 [2022-11-25 22:18:54,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-25 22:18:54,295 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 38 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:18:54,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 183 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 22:18:54,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9319 states. [2022-11-25 22:18:55,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9319 to 9318. [2022-11-25 22:18:55,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9318 states, 6556 states have (on average 1.1625991458206224) internal successors, (7622), 6557 states have internal predecessors, (7622), 1597 states have call successors, (1597), 1164 states have call predecessors, (1597), 1164 states have return successors, (1729), 1597 states have call predecessors, (1729), 1597 states have call successors, (1729) [2022-11-25 22:18:55,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9318 states to 9318 states and 10948 transitions. [2022-11-25 22:18:55,522 INFO L78 Accepts]: Start accepts. Automaton has 9318 states and 10948 transitions. Word has length 170 [2022-11-25 22:18:55,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:18:55,523 INFO L495 AbstractCegarLoop]: Abstraction has 9318 states and 10948 transitions. [2022-11-25 22:18:55,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-25 22:18:55,523 INFO L276 IsEmpty]: Start isEmpty. Operand 9318 states and 10948 transitions. [2022-11-25 22:18:55,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-11-25 22:18:55,530 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:18:55,531 INFO L195 NwaCegarLoop]: trace histogram [9, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:18:55,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 22:18:55,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:18:55,736 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-25 22:18:55,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:18:55,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1997241502, now seen corresponding path program 1 times [2022-11-25 22:18:55,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:18:55,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125571562] [2022-11-25 22:18:55,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:18:55,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:18:55,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:18:56,051 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 41 proven. 23 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-11-25 22:18:56,052 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:18:56,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125571562] [2022-11-25 22:18:56,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125571562] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:18:56,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261732704] [2022-11-25 22:18:56,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:18:56,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:18:56,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:18:56,054 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:18:56,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 22:18:56,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:18:56,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 578 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 22:18:56,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:18:56,312 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-11-25 22:18:56,312 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:18:56,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261732704] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:18:56,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:18:56,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-11-25 22:18:56,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661690152] [2022-11-25 22:18:56,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:18:56,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:18:56,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:18:56,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:18:56,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-25 22:18:56,315 INFO L87 Difference]: Start difference. First operand 9318 states and 10948 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-25 22:18:57,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:18:57,367 INFO L93 Difference]: Finished difference Result 15167 states and 17794 transitions. [2022-11-25 22:18:57,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:18:57,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 174 [2022-11-25 22:18:57,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:18:57,404 INFO L225 Difference]: With dead ends: 15167 [2022-11-25 22:18:57,405 INFO L226 Difference]: Without dead ends: 10804 [2022-11-25 22:18:57,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-25 22:18:57,417 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 32 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:18:57,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 229 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 22:18:57,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10804 states. [2022-11-25 22:18:58,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10804 to 10768. [2022-11-25 22:18:58,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10768 states, 7580 states have (on average 1.158311345646438) internal successors, (8780), 7581 states have internal predecessors, (8780), 1843 states have call successors, (1843), 1344 states have call predecessors, (1843), 1344 states have return successors, (1975), 1843 states have call predecessors, (1975), 1843 states have call successors, (1975) [2022-11-25 22:18:58,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10768 states to 10768 states and 12598 transitions. [2022-11-25 22:18:58,555 INFO L78 Accepts]: Start accepts. Automaton has 10768 states and 12598 transitions. Word has length 174 [2022-11-25 22:18:58,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:18:58,556 INFO L495 AbstractCegarLoop]: Abstraction has 10768 states and 12598 transitions. [2022-11-25 22:18:58,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-25 22:18:58,556 INFO L276 IsEmpty]: Start isEmpty. Operand 10768 states and 12598 transitions. [2022-11-25 22:18:58,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-25 22:18:58,576 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:18:58,577 INFO L195 NwaCegarLoop]: trace histogram [13, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:18:58,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-25 22:18:58,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:18:58,789 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-25 22:18:58,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:18:58,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1135407294, now seen corresponding path program 1 times [2022-11-25 22:18:58,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:18:58,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668862872] [2022-11-25 22:18:58,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:18:58,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:18:58,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:18:59,209 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 64 proven. 34 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-11-25 22:18:59,209 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:18:59,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668862872] [2022-11-25 22:18:59,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668862872] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:18:59,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857228759] [2022-11-25 22:18:59,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:18:59,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:18:59,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:18:59,211 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:18:59,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 22:18:59,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:18:59,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 766 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 22:18:59,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:18:59,777 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 278 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-11-25 22:18:59,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:19:00,098 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 103 refuted. 0 times theorem prover too weak. 359 trivial. 0 not checked. [2022-11-25 22:19:00,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857228759] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:19:00,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [609483573] [2022-11-25 22:19:00,124 INFO L159 IcfgInterpreter]: Started Sifa with 66 locations of interest [2022-11-25 22:19:00,125 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:19:00,129 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:19:00,134 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:19:00,135 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:19:15,526 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 65 for LOIs [2022-11-25 22:19:15,539 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 65 for LOIs [2022-11-25 22:19:15,550 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 76 for LOIs [2022-11-25 22:19:15,563 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 34 for LOIs [2022-11-25 22:19:15,567 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 65 for LOIs [2022-11-25 22:19:15,792 INFO L197 IcfgInterpreter]: Interpreting procedure is_do_write_p_triggered with input of size 65 for LOIs [2022-11-25 22:19:15,889 INFO L197 IcfgInterpreter]: Interpreting procedure is_do_read_c_triggered with input of size 65 for LOIs [2022-11-25 22:19:15,921 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 22:19:27,863 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '164932#(and (<= ~q_buf_0~0 2147483647) (= ~p_last_write~0 ~q_buf_0~0) (< 2147483646 ~p_num_write~0) (<= 0 (+ ~q_buf_0~0 2147483648)) (or (and (not (= |ULTIMATE.start_eval_~tmp~2#1| 0)) (= ~c_num_read~0 0) (<= 0 |ULTIMATE.start_stop_simulation_~__retres2~0#1|) (= |ULTIMATE.start_start_simulation_~tmp___0~3#1| 0) (<= |ULTIMATE.start_stop_simulation_~__retres2~0#1| 0) (<= |ULTIMATE.start_eval_~tmp~2#1| 2147483647) (= ~c_last_read~0 0) (= 1 ~c_dr_i~0) (= |ULTIMATE.start_start_simulation_~kernel_st~0#1| 1) (<= |ULTIMATE.start_stop_simulation_~tmp~3#1| 1) (<= 0 |ULTIMATE.start_stop_simulation_#res#1|) (<= |ULTIMATE.start_stop_simulation_#res#1| 0) (= 2 ~p_dw_pc~0) (= ~slow_clk_edge~0 2) (<= 0 |ULTIMATE.start_stop_simulation_~tmp~3#1|) (<= |ULTIMATE.start_eval_~tmp___1~0#1| 1) (= ~t~0 0) (not (= |ULTIMATE.start_eval_~tmp___1~0#1| 0)) (= ~p_dw_st~0 1) (<= ~q_free~0 1) (<= |ULTIMATE.start_start_simulation_~tmp~4#1| 1) (= ~c_dr_pc~0 0) (= ~p_dw_i~0 1) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_eval_~tmp___1~0#1|) (= 2 ~fast_clk_edge~0) (= ~a_t~0 0) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_start_simulation_~tmp~4#1|) (= |#NULL.base| 0) (<= 0 (+ |ULTIMATE.start_eval_~tmp~2#1| 2147483648))) (and (not (= |ULTIMATE.start_eval_~tmp~2#1| 0)) (= ~c_num_read~0 0) (<= 0 |ULTIMATE.start_stop_simulation_~__retres2~0#1|) (= |ULTIMATE.start_start_simulation_~tmp___0~3#1| 0) (<= |ULTIMATE.start_stop_simulation_~__retres2~0#1| 0) (<= |ULTIMATE.start_eval_~tmp~2#1| 2147483647) (= ~c_last_read~0 0) (= 1 ~c_dr_i~0) (= |ULTIMATE.start_start_simulation_~kernel_st~0#1| 1) (<= |ULTIMATE.start_stop_simulation_~tmp~3#1| 1) (<= 0 |ULTIMATE.start_stop_simulation_#res#1|) (<= |ULTIMATE.start_stop_simulation_#res#1| 0) (= ~slow_clk_edge~0 2) (not (= ~q_free~0 0)) (<= 0 |ULTIMATE.start_stop_simulation_~tmp~3#1|) (<= |ULTIMATE.start_eval_~tmp___1~0#1| 1) (= ~t~0 0) (= ~p_dw_pc~0 1) (not (= |ULTIMATE.start_eval_~tmp___1~0#1| 0)) (= ~p_dw_st~0 1) (<= ~q_free~0 1) (<= |ULTIMATE.start_start_simulation_~tmp~4#1| 1) (= ~c_dr_pc~0 0) (= ~p_dw_i~0 1) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_eval_~tmp___1~0#1|) (= 2 ~fast_clk_edge~0) (= ~a_t~0 0) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_start_simulation_~tmp~4#1|) (= |#NULL.base| 0) (<= 0 (+ |ULTIMATE.start_eval_~tmp~2#1| 2147483648)))))' at error location [2022-11-25 22:19:27,864 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 22:19:27,864 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:19:27,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 3] total 14 [2022-11-25 22:19:27,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293007884] [2022-11-25 22:19:27,864 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 22:19:27,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-25 22:19:27,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:19:27,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-25 22:19:27,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=348, Invalid=3312, Unknown=0, NotChecked=0, Total=3660 [2022-11-25 22:19:27,867 INFO L87 Difference]: Start difference. First operand 10768 states and 12598 transitions. Second operand has 14 states, 13 states have (on average 16.76923076923077) internal successors, (218), 13 states have internal predecessors, (218), 9 states have call successors, (56), 3 states have call predecessors, (56), 5 states have return successors, (57), 9 states have call predecessors, (57), 9 states have call successors, (57) [2022-11-25 22:19:34,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:19:34,750 INFO L93 Difference]: Finished difference Result 24773 states and 29091 transitions. [2022-11-25 22:19:34,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2022-11-25 22:19:34,751 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 16.76923076923077) internal successors, (218), 13 states have internal predecessors, (218), 9 states have call successors, (56), 3 states have call predecessors, (56), 5 states have return successors, (57), 9 states have call predecessors, (57), 9 states have call successors, (57) Word has length 236 [2022-11-25 22:19:34,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:19:34,803 INFO L225 Difference]: With dead ends: 24773 [2022-11-25 22:19:34,804 INFO L226 Difference]: Without dead ends: 14694 [2022-11-25 22:19:34,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 980 GetRequests, 701 SyntacticMatches, 42 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28794 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=5186, Invalid=51696, Unknown=0, NotChecked=0, Total=56882 [2022-11-25 22:19:34,847 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 1784 mSDsluCounter, 2215 mSDsCounter, 0 mSdLazyCounter, 1958 mSolverCounterSat, 745 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1792 SdHoareTripleChecker+Valid, 2574 SdHoareTripleChecker+Invalid, 2703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 745 IncrementalHoareTripleChecker+Valid, 1958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:19:34,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1792 Valid, 2574 Invalid, 2703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [745 Valid, 1958 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-25 22:19:34,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14694 states. [2022-11-25 22:19:36,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14694 to 12926. [2022-11-25 22:19:36,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12926 states, 9240 states have (on average 1.158008658008658) internal successors, (10700), 9241 states have internal predecessors, (10700), 2125 states have call successors, (2125), 1560 states have call predecessors, (2125), 1560 states have return successors, (2290), 2125 states have call predecessors, (2290), 2125 states have call successors, (2290) [2022-11-25 22:19:36,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12926 states to 12926 states and 15115 transitions. [2022-11-25 22:19:36,217 INFO L78 Accepts]: Start accepts. Automaton has 12926 states and 15115 transitions. Word has length 236 [2022-11-25 22:19:36,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:19:36,220 INFO L495 AbstractCegarLoop]: Abstraction has 12926 states and 15115 transitions. [2022-11-25 22:19:36,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 16.76923076923077) internal successors, (218), 13 states have internal predecessors, (218), 9 states have call successors, (56), 3 states have call predecessors, (56), 5 states have return successors, (57), 9 states have call predecessors, (57), 9 states have call successors, (57) [2022-11-25 22:19:36,220 INFO L276 IsEmpty]: Start isEmpty. Operand 12926 states and 15115 transitions. [2022-11-25 22:19:36,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 627 [2022-11-25 22:19:36,286 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:19:36,287 INFO L195 NwaCegarLoop]: trace histogram [37, 19, 19, 19, 19, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:19:36,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-25 22:19:36,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-25 22:19:36,493 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-25 22:19:36,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:19:36,493 INFO L85 PathProgramCache]: Analyzing trace with hash 390055225, now seen corresponding path program 1 times [2022-11-25 22:19:36,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:19:36,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447235752] [2022-11-25 22:19:36,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:19:36,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:19:36,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:19:38,803 INFO L134 CoverageAnalysis]: Checked inductivity of 3930 backedges. 274 proven. 173 refuted. 0 times theorem prover too weak. 3483 trivial. 0 not checked. [2022-11-25 22:19:38,803 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:19:38,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447235752] [2022-11-25 22:19:38,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447235752] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:19:38,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766572216] [2022-11-25 22:19:38,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:19:38,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:19:38,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:19:38,805 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:19:38,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-25 22:19:39,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:19:39,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 1901 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 22:19:39,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:19:40,106 INFO L134 CoverageAnalysis]: Checked inductivity of 3930 backedges. 0 proven. 3374 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2022-11-25 22:19:40,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:19:40,989 INFO L134 CoverageAnalysis]: Checked inductivity of 3930 backedges. 0 proven. 1304 refuted. 0 times theorem prover too weak. 2626 trivial. 0 not checked. [2022-11-25 22:19:40,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766572216] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:19:40,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1128962530] [2022-11-25 22:19:41,004 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2022-11-25 22:19:41,004 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:19:41,006 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:19:41,006 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:19:41,007 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:20:04,060 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 117 for LOIs [2022-11-25 22:20:04,222 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 121 for LOIs [2022-11-25 22:20:04,391 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 144 for LOIs [2022-11-25 22:20:04,542 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 63 for LOIs [2022-11-25 22:20:04,557 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 129 for LOIs [2022-11-25 22:20:04,943 INFO L197 IcfgInterpreter]: Interpreting procedure is_do_write_p_triggered with input of size 85 for LOIs [2022-11-25 22:20:05,034 INFO L197 IcfgInterpreter]: Interpreting procedure is_do_read_c_triggered with input of size 33 for LOIs [2022-11-25 22:20:05,091 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 22:20:25,437 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '224163#(and (<= ~q_buf_0~0 2147483647) (= ~p_last_write~0 ~q_buf_0~0) (< 2147483646 ~p_num_write~0) (<= 0 (+ ~q_buf_0~0 2147483648)) (or (and (<= 1 ~p_dw_i~0) (<= 0 ~t~0) (<= 1 |ULTIMATE.start_start_simulation_~kernel_st~0#1|) (<= 0 |#NULL.base|) (<= |ULTIMATE.start_start_simulation_~kernel_st~0#1| 1) (<= 1 ~c_dr_i~0) (<= 0 |ULTIMATE.start_stop_simulation_~__retres2~0#1|) (<= 0 ~c_dr_pc~0) (<= ~c_num_read~0 0) (<= ~c_last_read~0 0) (<= ~c_dr_i~0 1) (<= 1 ~p_dw_st~0) (<= |ULTIMATE.start_stop_simulation_~__retres2~0#1| 0) (<= |ULTIMATE.start_eval_~tmp~2#1| 2147483647) (<= |ULTIMATE.start_start_simulation_~tmp___0~3#1| 0) (<= 0 |ULTIMATE.start_start_simulation_~tmp___0~3#1|) (<= ~c_dr_pc~0 1) (<= |ULTIMATE.start_stop_simulation_~tmp~3#1| 1) (<= 0 |ULTIMATE.start_stop_simulation_#res#1|) (<= |ULTIMATE.start_stop_simulation_#res#1| 0) (<= |#NULL.offset| 0) (<= ~p_dw_i~0 1) (<= ~fast_clk_edge~0 2) (<= 0 |ULTIMATE.start_stop_simulation_~tmp~3#1|) (<= |ULTIMATE.start_eval_~tmp___1~0#1| 1) (<= ~q_free~0 1) (<= |ULTIMATE.start_start_simulation_~tmp~4#1| 1) (<= 2 ~p_dw_pc~0) (<= ~t~0 0) (<= 2 ~slow_clk_edge~0) (<= |#NULL.base| 0) (<= 2 ~fast_clk_edge~0) (<= 0 |ULTIMATE.start_eval_~tmp___1~0#1|) (<= ~p_dw_pc~0 2) (<= ~p_dw_st~0 1) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_start_simulation_~tmp~4#1|) (<= 0 ~c_num_read~0) (<= ~slow_clk_edge~0 2) (<= 0 ~c_last_read~0) (<= 0 (+ |ULTIMATE.start_eval_~tmp~2#1| 2147483648))) (and (<= 1 ~p_dw_i~0) (<= 0 ~t~0) (<= 1 |ULTIMATE.start_start_simulation_~kernel_st~0#1|) (<= 0 |#NULL.base|) (<= |ULTIMATE.start_start_simulation_~kernel_st~0#1| 1) (<= 1 ~c_dr_i~0) (<= ~p_dw_pc~0 1) (<= 0 |ULTIMATE.start_stop_simulation_~__retres2~0#1|) (<= 0 ~c_dr_pc~0) (<= ~c_num_read~0 0) (<= ~c_last_read~0 0) (<= ~c_dr_i~0 1) (<= 1 ~p_dw_st~0) (<= |ULTIMATE.start_stop_simulation_~__retres2~0#1| 0) (<= |ULTIMATE.start_eval_~tmp~2#1| 2147483647) (<= |ULTIMATE.start_start_simulation_~tmp___0~3#1| 0) (<= 0 |ULTIMATE.start_start_simulation_~tmp___0~3#1|) (<= ~c_dr_pc~0 1) (<= |ULTIMATE.start_stop_simulation_~tmp~3#1| 1) (<= 0 |ULTIMATE.start_stop_simulation_#res#1|) (<= |ULTIMATE.start_stop_simulation_#res#1| 0) (<= 1 ~p_dw_pc~0) (<= |#NULL.offset| 0) (<= ~p_dw_i~0 1) (<= ~fast_clk_edge~0 2) (<= 0 |ULTIMATE.start_stop_simulation_~tmp~3#1|) (<= |ULTIMATE.start_eval_~tmp___1~0#1| 1) (<= ~q_free~0 1) (<= |ULTIMATE.start_start_simulation_~tmp~4#1| 1) (<= ~t~0 0) (<= 2 ~slow_clk_edge~0) (<= |#NULL.base| 0) (<= 2 ~fast_clk_edge~0) (<= 0 |ULTIMATE.start_eval_~tmp___1~0#1|) (<= ~p_dw_st~0 1) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_start_simulation_~tmp~4#1|) (<= 0 ~c_num_read~0) (<= ~slow_clk_edge~0 2) (<= 0 ~c_last_read~0) (<= 0 (+ |ULTIMATE.start_eval_~tmp~2#1| 2147483648)))) (or (and (not (= |ULTIMATE.start_eval_~tmp~2#1| 0)) (not (= ~q_free~0 0)) (not (= |ULTIMATE.start_eval_~tmp___1~0#1| 0))) (and (not (= |ULTIMATE.start_eval_~tmp~2#1| 0)) (= 2 ~p_dw_pc~0) (not (= |ULTIMATE.start_eval_~tmp___1~0#1| 0)))))' at error location [2022-11-25 22:20:25,437 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 22:20:25,437 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:20:25,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 5, 6] total 26 [2022-11-25 22:20:25,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201713633] [2022-11-25 22:20:25,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 22:20:25,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-25 22:20:25,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:20:25,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-25 22:20:25,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=6019, Unknown=0, NotChecked=0, Total=6480 [2022-11-25 22:20:25,444 INFO L87 Difference]: Start difference. First operand 12926 states and 15115 transitions. Second operand has 26 states, 23 states have (on average 19.652173913043477) internal successors, (452), 23 states have internal predecessors, (452), 16 states have call successors, (111), 7 states have call predecessors, (111), 11 states have return successors, (112), 18 states have call predecessors, (112), 16 states have call successors, (112) [2022-11-25 22:21:19,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:21:19,420 INFO L93 Difference]: Finished difference Result 56945 states and 71966 transitions. [2022-11-25 22:21:19,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 827 states. [2022-11-25 22:21:19,421 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 23 states have (on average 19.652173913043477) internal successors, (452), 23 states have internal predecessors, (452), 16 states have call successors, (111), 7 states have call predecessors, (111), 11 states have return successors, (112), 18 states have call predecessors, (112), 16 states have call successors, (112) Word has length 626 [2022-11-25 22:21:19,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:21:19,562 INFO L225 Difference]: With dead ends: 56945 [2022-11-25 22:21:19,562 INFO L226 Difference]: Without dead ends: 39864 [2022-11-25 22:21:19,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2977 GetRequests, 2009 SyntacticMatches, 82 SemanticMatches, 886 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391859 ImplicationChecksByTransitivity, 49.4s TimeCoverageRelationStatistics Valid=42960, Invalid=744696, Unknown=0, NotChecked=0, Total=787656 [2022-11-25 22:21:19,877 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 9035 mSDsluCounter, 2638 mSDsCounter, 0 mSdLazyCounter, 25101 mSolverCounterSat, 5697 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9064 SdHoareTripleChecker+Valid, 3052 SdHoareTripleChecker+Invalid, 30798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 5697 IncrementalHoareTripleChecker+Valid, 25101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.7s IncrementalHoareTripleChecker+Time [2022-11-25 22:21:19,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9064 Valid, 3052 Invalid, 30798 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [5697 Valid, 25101 Invalid, 0 Unknown, 0 Unchecked, 18.7s Time] [2022-11-25 22:21:19,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39864 states. [2022-11-25 22:21:23,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39864 to 26752. [2022-11-25 22:21:23,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26752 states, 18581 states have (on average 1.1427802594047682) internal successors, (21234), 18973 states have internal predecessors, (21234), 4551 states have call successors, (4551), 3182 states have call predecessors, (4551), 3619 states have return successors, (5768), 4597 states have call predecessors, (5768), 4551 states have call successors, (5768) [2022-11-25 22:21:23,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26752 states to 26752 states and 31553 transitions. [2022-11-25 22:21:23,313 INFO L78 Accepts]: Start accepts. Automaton has 26752 states and 31553 transitions. Word has length 626 [2022-11-25 22:21:23,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:21:23,314 INFO L495 AbstractCegarLoop]: Abstraction has 26752 states and 31553 transitions. [2022-11-25 22:21:23,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 23 states have (on average 19.652173913043477) internal successors, (452), 23 states have internal predecessors, (452), 16 states have call successors, (111), 7 states have call predecessors, (111), 11 states have return successors, (112), 18 states have call predecessors, (112), 16 states have call successors, (112) [2022-11-25 22:21:23,315 INFO L276 IsEmpty]: Start isEmpty. Operand 26752 states and 31553 transitions. [2022-11-25 22:21:23,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1391 [2022-11-25 22:21:23,463 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:21:23,464 INFO L195 NwaCegarLoop]: trace histogram [85, 43, 43, 43, 43, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 23, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 20, 19, 19, 12, 12, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:21:23,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-25 22:21:23,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:21:23,672 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-25 22:21:23,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:21:23,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1425973768, now seen corresponding path program 1 times [2022-11-25 22:21:23,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:21:23,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165848553] [2022-11-25 22:21:23,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:21:23,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:21:23,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:21:25,904 INFO L134 CoverageAnalysis]: Checked inductivity of 21085 backedges. 1312 proven. 292 refuted. 0 times theorem prover too weak. 19481 trivial. 0 not checked. [2022-11-25 22:21:25,904 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:21:25,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165848553] [2022-11-25 22:21:25,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165848553] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:21:25,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078434527] [2022-11-25 22:21:25,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:21:25,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:21:25,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:21:25,906 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:21:25,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-25 22:21:26,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:21:26,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 4293 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 22:21:26,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:21:28,607 INFO L134 CoverageAnalysis]: Checked inductivity of 21085 backedges. 0 proven. 19747 refuted. 0 times theorem prover too weak. 1338 trivial. 0 not checked. [2022-11-25 22:21:28,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:21:30,330 INFO L134 CoverageAnalysis]: Checked inductivity of 21085 backedges. 0 proven. 7764 refuted. 0 times theorem prover too weak. 13321 trivial. 0 not checked. [2022-11-25 22:21:30,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078434527] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:21:30,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2074887599] [2022-11-25 22:21:30,334 INFO L159 IcfgInterpreter]: Started Sifa with 75 locations of interest [2022-11-25 22:21:30,335 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:21:30,335 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:21:30,335 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:21:30,336 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:21:38,659 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 62 for LOIs [2022-11-25 22:21:38,667 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 62 for LOIs [2022-11-25 22:21:38,677 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 74 for LOIs [2022-11-25 22:21:38,692 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 32 for LOIs [2022-11-25 22:21:38,696 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 51 for LOIs [2022-11-25 22:21:38,851 INFO L197 IcfgInterpreter]: Interpreting procedure is_do_write_p_triggered with input of size 51 for LOIs [2022-11-25 22:21:38,968 INFO L197 IcfgInterpreter]: Interpreting procedure is_do_read_c_triggered with input of size 51 for LOIs [2022-11-25 22:21:39,036 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 22:21:56,936 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '357666#(and (<= ~q_buf_0~0 2147483647) (= ~p_last_write~0 ~q_buf_0~0) (< 2147483646 ~p_num_write~0) (<= 0 (+ ~q_buf_0~0 2147483648)) (or (and (<= 0 ~t~0) (not (= |ULTIMATE.start_eval_~tmp~2#1| 0)) (= ~c_num_read~0 0) (<= 0 ~c_dr_pc~0) (<= |ULTIMATE.start_eval_~tmp~2#1| 2147483647) (= ~c_last_read~0 0) (= 1 ~c_dr_i~0) (= |ULTIMATE.start_start_simulation_~kernel_st~0#1| 1) (= 2 ~p_dw_pc~0) (= ~slow_clk_edge~0 2) (<= |ULTIMATE.start_eval_~tmp___1~0#1| 1) (not (= |ULTIMATE.start_eval_~tmp___1~0#1| 0)) (= ~p_dw_st~0 1) (<= ~q_free~0 1) (= ~p_dw_i~0 1) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_eval_~tmp___1~0#1|) (= 2 ~fast_clk_edge~0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0) (<= 0 (+ |ULTIMATE.start_eval_~tmp~2#1| 2147483648))) (and (<= 0 ~t~0) (not (= |ULTIMATE.start_eval_~tmp~2#1| 0)) (= ~c_num_read~0 0) (<= 0 ~c_dr_pc~0) (<= |ULTIMATE.start_eval_~tmp~2#1| 2147483647) (= ~c_last_read~0 0) (= 1 ~c_dr_i~0) (= |ULTIMATE.start_start_simulation_~kernel_st~0#1| 1) (= ~slow_clk_edge~0 2) (not (= ~q_free~0 0)) (<= |ULTIMATE.start_eval_~tmp___1~0#1| 1) (= ~p_dw_pc~0 1) (not (= |ULTIMATE.start_eval_~tmp___1~0#1| 0)) (= ~p_dw_st~0 1) (<= ~q_free~0 1) (= ~p_dw_i~0 1) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_eval_~tmp___1~0#1|) (= 2 ~fast_clk_edge~0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0) (<= 0 (+ |ULTIMATE.start_eval_~tmp~2#1| 2147483648)))))' at error location [2022-11-25 22:21:56,936 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 22:21:56,936 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:21:56,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 12] total 27 [2022-11-25 22:21:56,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157275737] [2022-11-25 22:21:56,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 22:21:56,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-25 22:21:56,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:21:56,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-25 22:21:56,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=809, Invalid=5997, Unknown=0, NotChecked=0, Total=6806 [2022-11-25 22:21:56,945 INFO L87 Difference]: Start difference. First operand 26752 states and 31553 transitions. Second operand has 27 states, 27 states have (on average 33.148148148148145) internal successors, (895), 27 states have internal predecessors, (895), 27 states have call successors, (216), 12 states have call predecessors, (216), 14 states have return successors, (218), 27 states have call predecessors, (218), 27 states have call successors, (218) [2022-11-25 22:22:05,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:22:05,178 INFO L93 Difference]: Finished difference Result 95265 states and 111443 transitions. [2022-11-25 22:22:05,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-25 22:22:05,179 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 33.148148148148145) internal successors, (895), 27 states have internal predecessors, (895), 27 states have call successors, (216), 12 states have call predecessors, (216), 14 states have return successors, (218), 27 states have call predecessors, (218), 27 states have call successors, (218) Word has length 1390 [2022-11-25 22:22:05,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:22:05,450 INFO L225 Difference]: With dead ends: 95265 [2022-11-25 22:22:05,450 INFO L226 Difference]: Without dead ends: 69301 [2022-11-25 22:22:05,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4264 GetRequests, 3993 SyntacticMatches, 146 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19599 ImplicationChecksByTransitivity, 18.7s TimeCoverageRelationStatistics Valid=2019, Invalid=13983, Unknown=0, NotChecked=0, Total=16002 [2022-11-25 22:22:05,511 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 3535 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 1753 mSolverCounterSat, 1036 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3535 SdHoareTripleChecker+Valid, 1943 SdHoareTripleChecker+Invalid, 2789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1036 IncrementalHoareTripleChecker+Valid, 1753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-25 22:22:05,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3535 Valid, 1943 Invalid, 2789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1036 Valid, 1753 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-25 22:22:05,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69301 states. [2022-11-25 22:22:11,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69301 to 67669. [2022-11-25 22:22:11,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67669 states, 47506 states have (on average 1.1265945354271039) internal successors, (53520), 48316 states have internal predecessors, (53520), 10448 states have call successors, (10448), 8696 states have call predecessors, (10448), 9714 states have return successors, (12756), 10657 states have call predecessors, (12756), 10448 states have call successors, (12756) [2022-11-25 22:22:12,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67669 states to 67669 states and 76724 transitions. [2022-11-25 22:22:12,099 INFO L78 Accepts]: Start accepts. Automaton has 67669 states and 76724 transitions. Word has length 1390 [2022-11-25 22:22:12,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:22:12,099 INFO L495 AbstractCegarLoop]: Abstraction has 67669 states and 76724 transitions. [2022-11-25 22:22:12,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 33.148148148148145) internal successors, (895), 27 states have internal predecessors, (895), 27 states have call successors, (216), 12 states have call predecessors, (216), 14 states have return successors, (218), 27 states have call predecessors, (218), 27 states have call successors, (218) [2022-11-25 22:22:12,100 INFO L276 IsEmpty]: Start isEmpty. Operand 67669 states and 76724 transitions. [2022-11-25 22:22:12,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3349 [2022-11-25 22:22:12,743 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:22:12,744 INFO L195 NwaCegarLoop]: trace histogram [181, 91, 91, 91, 91, 69, 69, 69, 69, 69, 69, 69, 69, 69, 69, 69, 68, 65, 46, 46, 46, 46, 46, 46, 46, 46, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 44, 24, 24, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 22, 22, 22, 22, 22, 22, 22, 12, 12, 12, 11, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:22:12,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-25 22:22:12,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-25 22:22:12,956 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-25 22:22:12,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:22:12,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1936619569, now seen corresponding path program 1 times [2022-11-25 22:22:12,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:22:12,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214768350] [2022-11-25 22:22:12,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:22:12,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:22:13,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:22:20,293 INFO L134 CoverageAnalysis]: Checked inductivity of 115501 backedges. 4614 proven. 775 refuted. 0 times theorem prover too weak. 110112 trivial. 0 not checked. [2022-11-25 22:22:20,293 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:22:20,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214768350] [2022-11-25 22:22:20,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214768350] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:22:20,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908100064] [2022-11-25 22:22:20,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:22:20,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:22:20,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:22:20,295 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:22:20,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6307afae-a6bc-433a-b2fb-e145226f5161/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-25 22:22:21,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:22:22,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 10131 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 22:22:22,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:22:22,662 INFO L134 CoverageAnalysis]: Checked inductivity of 115501 backedges. 28779 proven. 0 refuted. 0 times theorem prover too weak. 86722 trivial. 0 not checked. [2022-11-25 22:22:22,662 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:22:22,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908100064] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:22:22,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:22:22,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-11-25 22:22:22,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772481920] [2022-11-25 22:22:22,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:22:22,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 22:22:22,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:22:22,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 22:22:22,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-25 22:22:22,670 INFO L87 Difference]: Start difference. First operand 67669 states and 76724 transitions. Second operand has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 4 states have call successors, (44), 4 states have call predecessors, (44), 4 states have return successors, (44), 4 states have call predecessors, (44), 4 states have call successors, (44) [2022-11-25 22:22:26,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:22:26,720 INFO L93 Difference]: Finished difference Result 115721 states and 131482 transitions. [2022-11-25 22:22:26,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 22:22:26,721 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 4 states have call successors, (44), 4 states have call predecessors, (44), 4 states have return successors, (44), 4 states have call predecessors, (44), 4 states have call successors, (44) Word has length 3348 [2022-11-25 22:22:26,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:22:26,861 INFO L225 Difference]: With dead ends: 115721 [2022-11-25 22:22:26,862 INFO L226 Difference]: Without dead ends: 48288 [2022-11-25 22:22:26,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3355 GetRequests, 3349 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-25 22:22:26,961 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 48 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:22:26,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 193 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:22:27,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48288 states.