./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57dff1d-9de3-4f54-8555-97ed5f92e115/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57dff1d-9de3-4f54-8555-97ed5f92e115/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57dff1d-9de3-4f54-8555-97ed5f92e115/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57dff1d-9de3-4f54-8555-97ed5f92e115/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57dff1d-9de3-4f54-8555-97ed5f92e115/bin/utaipan-Xvt2sAort0/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57dff1d-9de3-4f54-8555-97ed5f92e115/bin/utaipan-Xvt2sAort0 --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 6710ae2bfe9a41273181e1b4b9dbdfa98f0dea6daffb771915892955eccb69dd --- 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-e04fb08 [2022-11-16 16:05:35,564 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 16:05:35,566 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 16:05:35,586 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 16:05:35,587 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 16:05:35,588 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 16:05:35,589 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 16:05:35,591 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 16:05:35,593 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 16:05:35,594 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 16:05:35,595 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 16:05:35,596 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 16:05:35,596 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 16:05:35,598 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 16:05:35,599 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 16:05:35,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 16:05:35,601 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 16:05:35,602 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 16:05:35,604 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 16:05:35,606 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 16:05:35,607 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 16:05:35,609 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 16:05:35,610 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 16:05:35,611 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 16:05:35,615 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 16:05:35,616 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 16:05:35,616 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 16:05:35,617 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 16:05:35,618 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 16:05:35,619 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 16:05:35,619 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 16:05:35,620 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 16:05:35,621 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 16:05:35,622 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 16:05:35,623 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 16:05:35,623 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 16:05:35,624 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 16:05:35,624 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 16:05:35,625 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 16:05:35,626 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 16:05:35,626 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 16:05:35,627 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57dff1d-9de3-4f54-8555-97ed5f92e115/bin/utaipan-Xvt2sAort0/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-16 16:05:35,650 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 16:05:35,650 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 16:05:35,651 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 16:05:35,651 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 16:05:35,652 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 16:05:35,652 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 16:05:35,652 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 16:05:35,652 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 16:05:35,652 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 16:05:35,653 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 16:05:35,653 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 16:05:35,653 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 16:05:35,653 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 16:05:35,653 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 16:05:35,654 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 16:05:35,654 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 16:05:35,654 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 16:05:35,654 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 16:05:35,655 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 16:05:35,655 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 16:05:35,655 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 16:05:35,656 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 16:05:35,656 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 16:05:35,656 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 16:05:35,656 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 16:05:35,656 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 16:05:35,657 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 16:05:35,657 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 16:05:35,657 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 16:05:35,657 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 16:05:35,657 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 16:05:35,658 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 16:05:35,658 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 16:05:35,658 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 16:05:35,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:05:35,659 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 16:05:35,659 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 16:05:35,659 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 16:05:35,659 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 16:05:35,659 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 16:05:35,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 16:05:35,660 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 16:05:35,660 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 16:05:35,660 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_a57dff1d-9de3-4f54-8555-97ed5f92e115/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57dff1d-9de3-4f54-8555-97ed5f92e115/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6710ae2bfe9a41273181e1b4b9dbdfa98f0dea6daffb771915892955eccb69dd [2022-11-16 16:05:35,913 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 16:05:35,943 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 16:05:35,947 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 16:05:35,948 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 16:05:35,949 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 16:05:35,950 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57dff1d-9de3-4f54-8555-97ed5f92e115/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i [2022-11-16 16:05:36,035 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57dff1d-9de3-4f54-8555-97ed5f92e115/bin/utaipan-Xvt2sAort0/data/14b08dd96/0dbf72c92f514f9d9a79267f692713bf/FLAGbe471529a [2022-11-16 16:05:36,626 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 16:05:36,632 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57dff1d-9de3-4f54-8555-97ed5f92e115/sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i [2022-11-16 16:05:36,651 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57dff1d-9de3-4f54-8555-97ed5f92e115/bin/utaipan-Xvt2sAort0/data/14b08dd96/0dbf72c92f514f9d9a79267f692713bf/FLAGbe471529a [2022-11-16 16:05:36,921 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57dff1d-9de3-4f54-8555-97ed5f92e115/bin/utaipan-Xvt2sAort0/data/14b08dd96/0dbf72c92f514f9d9a79267f692713bf [2022-11-16 16:05:36,924 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 16:05:36,925 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 16:05:36,927 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 16:05:36,927 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 16:05:36,931 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 16:05:36,932 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:05:36" (1/1) ... [2022-11-16 16:05:36,933 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69b9a7ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:05:36, skipping insertion in model container [2022-11-16 16:05:36,934 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:05:36" (1/1) ... [2022-11-16 16:05:36,946 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 16:05:36,982 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 16:05:37,425 WARN L229 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_a57dff1d-9de3-4f54-8555-97ed5f92e115/sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i[30553,30566] [2022-11-16 16:05:37,436 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:05:37,447 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 16:05:37,506 WARN L229 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_a57dff1d-9de3-4f54-8555-97ed5f92e115/sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i[30553,30566] [2022-11-16 16:05:37,515 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:05:37,562 INFO L208 MainTranslator]: Completed translation [2022-11-16 16:05:37,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:05:37 WrapperNode [2022-11-16 16:05:37,563 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 16:05:37,564 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 16:05:37,564 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 16:05:37,564 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 16:05:37,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:05:37" (1/1) ... [2022-11-16 16:05:37,594 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:05:37" (1/1) ... [2022-11-16 16:05:37,623 INFO L138 Inliner]: procedures = 172, calls = 27, calls flagged for inlining = 11, calls inlined = 15, statements flattened = 133 [2022-11-16 16:05:37,624 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 16:05:37,625 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 16:05:37,625 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 16:05:37,625 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 16:05:37,639 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:05:37" (1/1) ... [2022-11-16 16:05:37,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:05:37" (1/1) ... [2022-11-16 16:05:37,654 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:05:37" (1/1) ... [2022-11-16 16:05:37,658 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:05:37" (1/1) ... [2022-11-16 16:05:37,665 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:05:37" (1/1) ... [2022-11-16 16:05:37,679 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:05:37" (1/1) ... [2022-11-16 16:05:37,681 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:05:37" (1/1) ... [2022-11-16 16:05:37,682 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:05:37" (1/1) ... [2022-11-16 16:05:37,692 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 16:05:37,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 16:05:37,693 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 16:05:37,693 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 16:05:37,694 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:05:37" (1/1) ... [2022-11-16 16:05:37,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:05:37,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57dff1d-9de3-4f54-8555-97ed5f92e115/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:05:37,740 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57dff1d-9de3-4f54-8555-97ed5f92e115/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 16:05:37,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57dff1d-9de3-4f54-8555-97ed5f92e115/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 16:05:37,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 16:05:37,794 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2022-11-16 16:05:37,794 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2022-11-16 16:05:37,794 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-16 16:05:37,794 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-16 16:05:37,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 16:05:37,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 16:05:37,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 16:05:37,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 16:05:37,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 16:05:37,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 16:05:37,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 16:05:37,797 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 16:05:37,969 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 16:05:37,971 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 16:05:38,337 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 16:05:38,504 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 16:05:38,523 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 16:05:38,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:05:38 BoogieIcfgContainer [2022-11-16 16:05:38,526 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 16:05:38,528 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 16:05:38,528 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 16:05:38,540 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 16:05:38,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 04:05:36" (1/3) ... [2022-11-16 16:05:38,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48997e53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:05:38, skipping insertion in model container [2022-11-16 16:05:38,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:05:37" (2/3) ... [2022-11-16 16:05:38,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48997e53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:05:38, skipping insertion in model container [2022-11-16 16:05:38,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:05:38" (3/3) ... [2022-11-16 16:05:38,542 INFO L112 eAbstractionObserver]: Analyzing ICFG 35_double_lock_p3_vs.i [2022-11-16 16:05:38,551 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 16:05:38,562 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 16:05:38,562 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-16 16:05:38,562 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 16:05:38,639 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 16:05:38,674 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-16 16:05:38,689 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 95 transitions, 200 flow [2022-11-16 16:05:38,692 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 96 places, 95 transitions, 200 flow [2022-11-16 16:05:38,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 95 transitions, 200 flow [2022-11-16 16:05:38,774 INFO L130 PetriNetUnfolder]: 6/105 cut-off events. [2022-11-16 16:05:38,780 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 16:05:38,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 105 events. 6/105 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 129 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 86. Up to 4 conditions per place. [2022-11-16 16:05:38,792 INFO L119 LiptonReduction]: Number of co-enabled transitions 2644 [2022-11-16 16:05:43,220 INFO L134 LiptonReduction]: Checked pairs total: 4851 [2022-11-16 16:05:43,221 INFO L136 LiptonReduction]: Total number of compositions: 98 [2022-11-16 16:05:43,232 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 33 places, 30 transitions, 70 flow [2022-11-16 16:05:43,293 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 382 states, 364 states have (on average 3.0851648351648353) internal successors, (1123), 381 states have internal predecessors, (1123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:05:43,310 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 16:05:43,315 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;@7863e620, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 16:05:43,316 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-11-16 16:05:43,319 INFO L276 IsEmpty]: Start isEmpty. Operand has 382 states, 364 states have (on average 3.0851648351648353) internal successors, (1123), 381 states have internal predecessors, (1123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:05:43,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-16 16:05:43,325 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:05:43,325 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-16 16:05:43,326 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 16:05:43,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:05:43,330 INFO L85 PathProgramCache]: Analyzing trace with hash 746196353, now seen corresponding path program 1 times [2022-11-16 16:05:43,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:05:43,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757075759] [2022-11-16 16:05:43,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:05:43,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:05:43,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:05:43,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:05:43,519 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:05:43,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757075759] [2022-11-16 16:05:43,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757075759] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:05:43,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:05:43,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 16:05:43,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892037696] [2022-11-16 16:05:43,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:05:43,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 16:05:43,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:05:43,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 16:05:43,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 16:05:43,562 INFO L87 Difference]: Start difference. First operand has 382 states, 364 states have (on average 3.0851648351648353) internal successors, (1123), 381 states have internal predecessors, (1123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 6.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:05:43,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:05:43,646 INFO L93 Difference]: Finished difference Result 222 states and 598 transitions. [2022-11-16 16:05:43,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 16:05:43,648 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 6.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-16 16:05:43,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:05:43,666 INFO L225 Difference]: With dead ends: 222 [2022-11-16 16:05:43,666 INFO L226 Difference]: Without dead ends: 222 [2022-11-16 16:05:43,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 16:05:43,674 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 16:05:43,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 16:05:43,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-11-16 16:05:43,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2022-11-16 16:05:43,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 222 states have (on average 2.6936936936936937) internal successors, (598), 221 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:05:43,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 598 transitions. [2022-11-16 16:05:43,746 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 598 transitions. Word has length 6 [2022-11-16 16:05:43,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:05:43,748 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 598 transitions. [2022-11-16 16:05:43,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 6.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:05:43,754 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 598 transitions. [2022-11-16 16:05:43,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-16 16:05:43,755 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:05:43,756 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-16 16:05:43,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 16:05:43,756 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 16:05:43,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:05:43,757 INFO L85 PathProgramCache]: Analyzing trace with hash 746196357, now seen corresponding path program 1 times [2022-11-16 16:05:43,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:05:43,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905938983] [2022-11-16 16:05:43,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:05:43,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:05:43,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:05:43,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:05:43,996 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:05:43,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905938983] [2022-11-16 16:05:43,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905938983] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:05:43,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:05:43,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 16:05:43,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332468281] [2022-11-16 16:05:43,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:05:44,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:05:44,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:05:44,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:05:44,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:05:44,010 INFO L87 Difference]: Start difference. First operand 222 states and 598 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:05:44,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:05:44,073 INFO L93 Difference]: Finished difference Result 190 states and 494 transitions. [2022-11-16 16:05:44,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:05:44,074 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-16 16:05:44,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:05:44,076 INFO L225 Difference]: With dead ends: 190 [2022-11-16 16:05:44,078 INFO L226 Difference]: Without dead ends: 190 [2022-11-16 16:05:44,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:05:44,080 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 7 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 16:05:44,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 4 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 16:05:44,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-11-16 16:05:44,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 174. [2022-11-16 16:05:44,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 174 states have (on average 2.67816091954023) internal successors, (466), 173 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:05:44,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 466 transitions. [2022-11-16 16:05:44,101 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 466 transitions. Word has length 6 [2022-11-16 16:05:44,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:05:44,101 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 466 transitions. [2022-11-16 16:05:44,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:05:44,101 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 466 transitions. [2022-11-16 16:05:44,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 16:05:44,103 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:05:44,103 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-16 16:05:44,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 16:05:44,104 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 16:05:44,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:05:44,105 INFO L85 PathProgramCache]: Analyzing trace with hash -164906113, now seen corresponding path program 1 times [2022-11-16 16:05:44,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:05:44,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493431775] [2022-11-16 16:05:44,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:05:44,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:05:44,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 16:05:44,139 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 16:05:44,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 16:05:44,181 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-16 16:05:44,181 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 16:05:44,182 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2022-11-16 16:05:44,184 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2022-11-16 16:05:44,185 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2022-11-16 16:05:44,185 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2022-11-16 16:05:44,185 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2022-11-16 16:05:44,185 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2022-11-16 16:05:44,186 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2022-11-16 16:05:44,186 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2022-11-16 16:05:44,186 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2022-11-16 16:05:44,186 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2022-11-16 16:05:44,187 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2022-11-16 16:05:44,187 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2022-11-16 16:05:44,187 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2022-11-16 16:05:44,187 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2022-11-16 16:05:44,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2022-11-16 16:05:44,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2022-11-16 16:05:44,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2022-11-16 16:05:44,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2022-11-16 16:05:44,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 16:05:44,191 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-16 16:05:44,193 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 16:05:44,194 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-16 16:05:44,242 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 16:05:44,246 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-16 16:05:44,246 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 153 places, 152 transitions, 328 flow [2022-11-16 16:05:44,246 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 153 places, 152 transitions, 328 flow [2022-11-16 16:05:44,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 152 transitions, 328 flow [2022-11-16 16:05:44,284 INFO L130 PetriNetUnfolder]: 8/162 cut-off events. [2022-11-16 16:05:44,284 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 16:05:44,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 162 events. 8/162 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 321 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 171. Up to 6 conditions per place. [2022-11-16 16:05:44,292 INFO L119 LiptonReduction]: Number of co-enabled transitions 8688 [2022-11-16 16:05:48,099 INFO L134 LiptonReduction]: Checked pairs total: 25511 [2022-11-16 16:05:48,100 INFO L136 LiptonReduction]: Total number of compositions: 121 [2022-11-16 16:05:48,101 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 69 places, 64 transitions, 152 flow [2022-11-16 16:05:48,834 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 13747 states, 13575 states have (on average 4.047587476979742) internal successors, (54946), 13746 states have internal predecessors, (54946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:05:48,836 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 16:05:48,836 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;@7863e620, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 16:05:48,836 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2022-11-16 16:05:48,866 INFO L276 IsEmpty]: Start isEmpty. Operand has 13747 states, 13575 states have (on average 4.047587476979742) internal successors, (54946), 13746 states have internal predecessors, (54946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:05:48,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 16:05:48,867 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:05:48,867 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:05:48,868 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-16 16:05:48,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:05:48,869 INFO L85 PathProgramCache]: Analyzing trace with hash 454104287, now seen corresponding path program 1 times [2022-11-16 16:05:48,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:05:48,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207691092] [2022-11-16 16:05:48,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:05:48,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:05:48,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:05:49,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:05:49,037 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:05:49,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207691092] [2022-11-16 16:05:49,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207691092] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:05:49,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:05:49,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 16:05:49,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071033857] [2022-11-16 16:05:49,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:05:49,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:05:49,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:05:49,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:05:49,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:05:49,064 INFO L87 Difference]: Start difference. First operand has 13747 states, 13575 states have (on average 4.047587476979742) internal successors, (54946), 13746 states have internal predecessors, (54946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:05:49,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:05:49,328 INFO L93 Difference]: Finished difference Result 8978 states and 33610 transitions. [2022-11-16 16:05:49,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:05:49,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-16 16:05:49,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:05:49,484 INFO L225 Difference]: With dead ends: 8978 [2022-11-16 16:05:49,484 INFO L226 Difference]: Without dead ends: 8978 [2022-11-16 16:05:49,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:05:49,485 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 13 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:05:49,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 11 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:05:49,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8978 states. [2022-11-16 16:05:49,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8978 to 8918. [2022-11-16 16:05:49,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8918 states, 8918 states have (on average 3.752186588921283) internal successors, (33462), 8917 states have internal predecessors, (33462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:05:50,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8918 states to 8918 states and 33462 transitions. [2022-11-16 16:05:50,014 INFO L78 Accepts]: Start accepts. Automaton has 8918 states and 33462 transitions. Word has length 8 [2022-11-16 16:05:50,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:05:50,014 INFO L495 AbstractCegarLoop]: Abstraction has 8918 states and 33462 transitions. [2022-11-16 16:05:50,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:05:50,015 INFO L276 IsEmpty]: Start isEmpty. Operand 8918 states and 33462 transitions. [2022-11-16 16:05:50,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 16:05:50,016 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:05:50,016 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:05:50,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 16:05:50,019 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-16 16:05:50,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:05:50,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1692487127, now seen corresponding path program 1 times [2022-11-16 16:05:50,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:05:50,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813716501] [2022-11-16 16:05:50,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:05:50,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:05:50,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:05:50,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:05:50,139 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:05:50,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813716501] [2022-11-16 16:05:50,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813716501] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:05:50,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:05:50,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:05:50,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245191359] [2022-11-16 16:05:50,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:05:50,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 16:05:50,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:05:50,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 16:05:50,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:05:50,143 INFO L87 Difference]: Start difference. First operand 8918 states and 33462 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:05:50,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:05:50,758 INFO L93 Difference]: Finished difference Result 11922 states and 43310 transitions. [2022-11-16 16:05:50,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 16:05:50,758 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-16 16:05:50,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:05:50,850 INFO L225 Difference]: With dead ends: 11922 [2022-11-16 16:05:50,850 INFO L226 Difference]: Without dead ends: 11922 [2022-11-16 16:05:50,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-16 16:05:50,851 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 114 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 16:05:50,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 30 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 16:05:50,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11922 states. [2022-11-16 16:05:51,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11922 to 10182. [2022-11-16 16:05:51,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10182 states, 10182 states have (on average 3.7417010410528384) internal successors, (38098), 10181 states have internal predecessors, (38098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:05:51,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10182 states to 10182 states and 38098 transitions. [2022-11-16 16:05:51,366 INFO L78 Accepts]: Start accepts. Automaton has 10182 states and 38098 transitions. Word has length 10 [2022-11-16 16:05:51,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:05:51,367 INFO L495 AbstractCegarLoop]: Abstraction has 10182 states and 38098 transitions. [2022-11-16 16:05:51,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:05:51,367 INFO L276 IsEmpty]: Start isEmpty. Operand 10182 states and 38098 transitions. [2022-11-16 16:05:51,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 16:05:51,369 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:05:51,369 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:05:51,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 16:05:51,369 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-16 16:05:51,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:05:51,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1692487125, now seen corresponding path program 1 times [2022-11-16 16:05:51,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:05:51,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853233213] [2022-11-16 16:05:51,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:05:51,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:05:51,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:05:51,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:05:51,440 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:05:51,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853233213] [2022-11-16 16:05:51,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853233213] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:05:51,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:05:51,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:05:51,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365104800] [2022-11-16 16:05:51,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:05:51,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 16:05:51,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:05:51,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 16:05:51,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:05:51,442 INFO L87 Difference]: Start difference. First operand 10182 states and 38098 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:05:52,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:05:52,169 INFO L93 Difference]: Finished difference Result 12206 states and 43882 transitions. [2022-11-16 16:05:52,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 16:05:52,169 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-16 16:05:52,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:05:52,295 INFO L225 Difference]: With dead ends: 12206 [2022-11-16 16:05:52,295 INFO L226 Difference]: Without dead ends: 12206 [2022-11-16 16:05:52,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-16 16:05:52,297 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 104 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 16:05:52,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 40 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 16:05:52,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12206 states. [2022-11-16 16:05:52,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12206 to 10626. [2022-11-16 16:05:52,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10626 states, 10626 states have (on average 3.675701110483719) internal successors, (39058), 10625 states have internal predecessors, (39058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:05:52,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10626 states to 10626 states and 39058 transitions. [2022-11-16 16:05:52,817 INFO L78 Accepts]: Start accepts. Automaton has 10626 states and 39058 transitions. Word has length 10 [2022-11-16 16:05:52,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:05:52,818 INFO L495 AbstractCegarLoop]: Abstraction has 10626 states and 39058 transitions. [2022-11-16 16:05:52,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:05:52,818 INFO L276 IsEmpty]: Start isEmpty. Operand 10626 states and 39058 transitions. [2022-11-16 16:05:52,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 16:05:52,820 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:05:52,820 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:05:52,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 16:05:52,821 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-16 16:05:52,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:05:52,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1406984672, now seen corresponding path program 1 times [2022-11-16 16:05:52,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:05:52,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076208719] [2022-11-16 16:05:52,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:05:52,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:05:52,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:05:52,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:05:52,914 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:05:52,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076208719] [2022-11-16 16:05:52,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076208719] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:05:52,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:05:52,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 16:05:52,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746437297] [2022-11-16 16:05:52,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:05:52,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 16:05:52,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:05:52,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 16:05:52,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-16 16:05:52,917 INFO L87 Difference]: Start difference. First operand 10626 states and 39058 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:05:53,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:05:53,495 INFO L93 Difference]: Finished difference Result 13870 states and 50198 transitions. [2022-11-16 16:05:53,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 16:05:53,495 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-16 16:05:53,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:05:53,724 INFO L225 Difference]: With dead ends: 13870 [2022-11-16 16:05:53,724 INFO L226 Difference]: Without dead ends: 13870 [2022-11-16 16:05:53,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-11-16 16:05:53,727 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 236 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 16:05:53,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 79 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 16:05:53,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13870 states. [2022-11-16 16:05:54,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13870 to 11590. [2022-11-16 16:05:54,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11590 states, 11590 states have (on average 3.706125970664366) internal successors, (42954), 11589 states have internal predecessors, (42954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:05:54,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11590 states to 11590 states and 42954 transitions. [2022-11-16 16:05:54,320 INFO L78 Accepts]: Start accepts. Automaton has 11590 states and 42954 transitions. Word has length 14 [2022-11-16 16:05:54,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:05:54,321 INFO L495 AbstractCegarLoop]: Abstraction has 11590 states and 42954 transitions. [2022-11-16 16:05:54,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:05:54,321 INFO L276 IsEmpty]: Start isEmpty. Operand 11590 states and 42954 transitions. [2022-11-16 16:05:54,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 16:05:54,326 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:05:54,326 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:05:54,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 16:05:54,328 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-16 16:05:54,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:05:54,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1406984638, now seen corresponding path program 1 times [2022-11-16 16:05:54,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:05:54,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083577749] [2022-11-16 16:05:54,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:05:54,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:05:54,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:05:54,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:05:54,469 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:05:54,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083577749] [2022-11-16 16:05:54,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083577749] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:05:54,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:05:54,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 16:05:54,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365470842] [2022-11-16 16:05:54,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:05:54,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 16:05:54,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:05:54,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 16:05:54,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 16:05:54,472 INFO L87 Difference]: Start difference. First operand 11590 states and 42954 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:05:55,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:05:55,227 INFO L93 Difference]: Finished difference Result 13874 states and 49486 transitions. [2022-11-16 16:05:55,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 16:05:55,228 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-16 16:05:55,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:05:55,329 INFO L225 Difference]: With dead ends: 13874 [2022-11-16 16:05:55,329 INFO L226 Difference]: Without dead ends: 13874 [2022-11-16 16:05:55,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-16 16:05:55,330 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 211 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 16:05:55,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 76 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 716 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 16:05:55,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13874 states. [2022-11-16 16:05:55,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13874 to 11654. [2022-11-16 16:05:55,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11654 states, 11654 states have (on average 3.637377724386477) internal successors, (42390), 11653 states have internal predecessors, (42390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:05:55,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11654 states to 11654 states and 42390 transitions. [2022-11-16 16:05:55,833 INFO L78 Accepts]: Start accepts. Automaton has 11654 states and 42390 transitions. Word has length 14 [2022-11-16 16:05:55,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:05:55,834 INFO L495 AbstractCegarLoop]: Abstraction has 11654 states and 42390 transitions. [2022-11-16 16:05:55,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:05:55,834 INFO L276 IsEmpty]: Start isEmpty. Operand 11654 states and 42390 transitions. [2022-11-16 16:05:55,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 16:05:55,835 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:05:55,835 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:05:55,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 16:05:55,836 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-16 16:05:55,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:05:55,836 INFO L85 PathProgramCache]: Analyzing trace with hash 531397783, now seen corresponding path program 1 times [2022-11-16 16:05:55,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:05:55,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983567201] [2022-11-16 16:05:55,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:05:55,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:05:55,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:05:55,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 16:05:55,948 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:05:55,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983567201] [2022-11-16 16:05:55,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983567201] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:05:55,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:05:55,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:05:55,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015570052] [2022-11-16 16:05:55,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:05:55,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 16:05:55,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:05:55,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 16:05:55,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:05:55,952 INFO L87 Difference]: Start difference. First operand 11654 states and 42390 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:05:56,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:05:56,307 INFO L93 Difference]: Finished difference Result 13774 states and 49626 transitions. [2022-11-16 16:05:56,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 16:05:56,308 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-16 16:05:56,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:05:56,376 INFO L225 Difference]: With dead ends: 13774 [2022-11-16 16:05:56,376 INFO L226 Difference]: Without dead ends: 13774 [2022-11-16 16:05:56,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-16 16:05:56,377 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 116 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 16:05:56,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 37 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 16:05:56,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13774 states. [2022-11-16 16:05:56,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13774 to 11954. [2022-11-16 16:05:56,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11954 states, 11954 states have (on average 3.6732474485527855) internal successors, (43910), 11953 states have internal predecessors, (43910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:05:56,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11954 states to 11954 states and 43910 transitions. [2022-11-16 16:05:56,962 INFO L78 Accepts]: Start accepts. Automaton has 11954 states and 43910 transitions. Word has length 14 [2022-11-16 16:05:56,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:05:56,962 INFO L495 AbstractCegarLoop]: Abstraction has 11954 states and 43910 transitions. [2022-11-16 16:05:56,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:05:56,962 INFO L276 IsEmpty]: Start isEmpty. Operand 11954 states and 43910 transitions. [2022-11-16 16:05:56,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 16:05:56,963 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:05:56,964 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:05:56,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 16:05:56,964 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-16 16:05:56,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:05:56,965 INFO L85 PathProgramCache]: Analyzing trace with hash 531397784, now seen corresponding path program 1 times [2022-11-16 16:05:56,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:05:56,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322890912] [2022-11-16 16:05:56,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:05:56,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:05:56,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:05:57,035 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 16:05:57,036 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:05:57,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322890912] [2022-11-16 16:05:57,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322890912] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:05:57,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:05:57,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:05:57,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624200496] [2022-11-16 16:05:57,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:05:57,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 16:05:57,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:05:57,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 16:05:57,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:05:57,039 INFO L87 Difference]: Start difference. First operand 11954 states and 43910 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:05:57,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:05:57,597 INFO L93 Difference]: Finished difference Result 13434 states and 48094 transitions. [2022-11-16 16:05:57,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 16:05:57,598 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-16 16:05:57,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:05:57,668 INFO L225 Difference]: With dead ends: 13434 [2022-11-16 16:05:57,668 INFO L226 Difference]: Without dead ends: 13434 [2022-11-16 16:05:57,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-16 16:05:57,669 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 102 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 16:05:57,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 47 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 16:05:57,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13434 states. [2022-11-16 16:05:58,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13434 to 11534. [2022-11-16 16:05:58,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11534 states, 11534 states have (on average 3.6426218137679904) internal successors, (42014), 11533 states have internal predecessors, (42014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:05:58,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11534 states to 11534 states and 42014 transitions. [2022-11-16 16:05:58,253 INFO L78 Accepts]: Start accepts. Automaton has 11534 states and 42014 transitions. Word has length 14 [2022-11-16 16:05:58,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:05:58,253 INFO L495 AbstractCegarLoop]: Abstraction has 11534 states and 42014 transitions. [2022-11-16 16:05:58,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:05:58,254 INFO L276 IsEmpty]: Start isEmpty. Operand 11534 states and 42014 transitions. [2022-11-16 16:05:58,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 16:05:58,255 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:05:58,255 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:05:58,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 16:05:58,256 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-16 16:05:58,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:05:58,256 INFO L85 PathProgramCache]: Analyzing trace with hash 522428655, now seen corresponding path program 1 times [2022-11-16 16:05:58,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:05:58,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752906417] [2022-11-16 16:05:58,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:05:58,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:05:58,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 16:05:58,268 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 16:05:58,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 16:05:58,287 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-16 16:05:58,287 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 16:05:58,287 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 26 remaining) [2022-11-16 16:05:58,288 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 26 remaining) [2022-11-16 16:05:58,288 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 26 remaining) [2022-11-16 16:05:58,288 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 26 remaining) [2022-11-16 16:05:58,288 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 26 remaining) [2022-11-16 16:05:58,288 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 26 remaining) [2022-11-16 16:05:58,289 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 26 remaining) [2022-11-16 16:05:58,289 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 26 remaining) [2022-11-16 16:05:58,289 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 26 remaining) [2022-11-16 16:05:58,289 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 26 remaining) [2022-11-16 16:05:58,290 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 26 remaining) [2022-11-16 16:05:58,290 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 26 remaining) [2022-11-16 16:05:58,290 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 26 remaining) [2022-11-16 16:05:58,291 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 26 remaining) [2022-11-16 16:05:58,291 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 26 remaining) [2022-11-16 16:05:58,291 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 26 remaining) [2022-11-16 16:05:58,291 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 26 remaining) [2022-11-16 16:05:58,292 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 26 remaining) [2022-11-16 16:05:58,292 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 26 remaining) [2022-11-16 16:05:58,293 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 26 remaining) [2022-11-16 16:05:58,293 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 26 remaining) [2022-11-16 16:05:58,293 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 26 remaining) [2022-11-16 16:05:58,293 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 26 remaining) [2022-11-16 16:05:58,293 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 26 remaining) [2022-11-16 16:05:58,294 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 26 remaining) [2022-11-16 16:05:58,294 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 26 remaining) [2022-11-16 16:05:58,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 16:05:58,295 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:05:58,296 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 16:05:58,296 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-16 16:05:58,350 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 16:05:58,353 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-16 16:05:58,353 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 210 places, 209 transitions, 460 flow [2022-11-16 16:05:58,353 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 210 places, 209 transitions, 460 flow [2022-11-16 16:05:58,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 209 transitions, 460 flow [2022-11-16 16:05:58,439 INFO L130 PetriNetUnfolder]: 10/219 cut-off events. [2022-11-16 16:05:58,443 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-16 16:05:58,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240 conditions, 219 events. 10/219 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 572 event pairs, 0 based on Foata normal form. 0/181 useless extension candidates. Maximal degree in co-relation 233. Up to 8 conditions per place. [2022-11-16 16:05:58,459 INFO L119 LiptonReduction]: Number of co-enabled transitions 18516 [2022-11-16 16:06:04,367 INFO L134 LiptonReduction]: Checked pairs total: 50923 [2022-11-16 16:06:04,368 INFO L136 LiptonReduction]: Total number of compositions: 174 [2022-11-16 16:06:04,369 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 97 places, 90 transitions, 222 flow [2022-11-16 16:06:14,084 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 289272 states, 287724 states have (on average 5.024540879453921) internal successors, (1445681), 289271 states have internal predecessors, (1445681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:06:14,098 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 16:06:14,100 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;@7863e620, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 16:06:14,100 INFO L358 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2022-11-16 16:06:14,479 INFO L276 IsEmpty]: Start isEmpty. Operand has 289272 states, 287724 states have (on average 5.024540879453921) internal successors, (1445681), 289271 states have internal predecessors, (1445681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:06:14,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 16:06:14,480 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:06:14,480 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:06:14,480 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2022-11-16 16:06:14,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:06:14,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1354292703, now seen corresponding path program 1 times [2022-11-16 16:06:14,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:06:14,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620063070] [2022-11-16 16:06:14,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:06:14,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:06:14,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:06:14,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:06:14,524 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:06:14,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620063070] [2022-11-16 16:06:14,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620063070] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:06:14,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:06:14,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 16:06:14,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888059282] [2022-11-16 16:06:14,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:06:14,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:06:14,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:06:14,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:06:14,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:06:14,930 INFO L87 Difference]: Start difference. First operand has 289272 states, 287724 states have (on average 5.024540879453921) internal successors, (1445681), 289271 states have internal predecessors, (1445681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:06:20,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:06:20,765 INFO L93 Difference]: Finished difference Result 271782 states and 1198586 transitions. [2022-11-16 16:06:20,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:06:20,766 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-16 16:06:20,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:06:22,982 INFO L225 Difference]: With dead ends: 271782 [2022-11-16 16:06:22,982 INFO L226 Difference]: Without dead ends: 271782 [2022-11-16 16:06:22,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:06:22,983 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 38 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 16:06:22,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 18 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 16:06:24,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271782 states. [2022-11-16 16:06:33,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271782 to 240922. [2022-11-16 16:06:34,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240922 states, 240922 states have (on average 4.632113298079877) internal successors, (1115978), 240921 states have internal predecessors, (1115978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:06:36,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240922 states to 240922 states and 1115978 transitions. [2022-11-16 16:06:36,951 INFO L78 Accepts]: Start accepts. Automaton has 240922 states and 1115978 transitions. Word has length 8 [2022-11-16 16:06:36,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:06:36,951 INFO L495 AbstractCegarLoop]: Abstraction has 240922 states and 1115978 transitions. [2022-11-16 16:06:36,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:06:36,951 INFO L276 IsEmpty]: Start isEmpty. Operand 240922 states and 1115978 transitions. [2022-11-16 16:06:36,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 16:06:36,952 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:06:36,952 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:06:36,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 16:06:36,952 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2022-11-16 16:06:36,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:06:36,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1354292633, now seen corresponding path program 1 times [2022-11-16 16:06:36,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:06:36,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027055849] [2022-11-16 16:06:36,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:06:36,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:06:36,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:06:36,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:06:36,983 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:06:36,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027055849] [2022-11-16 16:06:36,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027055849] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:06:36,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:06:36,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 16:06:36,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215704770] [2022-11-16 16:06:36,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:06:36,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:06:36,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:06:36,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:06:36,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:06:36,986 INFO L87 Difference]: Start difference. First operand 240922 states and 1115978 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)