./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-ext/25_stack_longest-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e7fbc69 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_233a6186-b20d-4f36-ac36-b98e890f099e/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233a6186-b20d-4f36-ac36-b98e890f099e/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233a6186-b20d-4f36-ac36-b98e890f099e/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233a6186-b20d-4f36-ac36-b98e890f099e/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-ext/25_stack_longest-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233a6186-b20d-4f36-ac36-b98e890f099e/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233a6186-b20d-4f36-ac36-b98e890f099e/bin/utaipan-Q6hlc19bkW --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 0cc9afdbf7eeaac0d52aedc8a0325c076240e2f45d0a3fe91081372b30b32137 --- 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-4e7fbc6 [2022-11-23 14:07:27,264 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:07:27,266 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:07:27,287 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:07:27,287 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:07:27,288 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:07:27,290 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:07:27,291 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:07:27,293 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:07:27,294 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:07:27,295 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:07:27,296 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:07:27,296 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:07:27,297 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:07:27,298 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:07:27,300 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:07:27,300 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:07:27,301 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:07:27,303 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:07:27,305 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:07:27,306 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:07:27,313 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:07:27,316 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:07:27,317 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:07:27,320 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:07:27,321 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:07:27,321 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:07:27,322 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:07:27,322 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:07:27,323 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:07:27,324 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:07:27,324 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:07:27,325 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:07:27,326 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:07:27,332 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:07:27,334 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:07:27,335 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:07:27,336 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:07:27,336 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:07:27,339 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:07:27,340 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:07:27,341 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233a6186-b20d-4f36-ac36-b98e890f099e/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-23 14:07:27,384 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:07:27,385 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:07:27,385 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:07:27,386 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:07:27,387 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:07:27,387 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:07:27,387 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:07:27,387 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:07:27,388 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:07:27,388 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:07:27,389 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:07:27,389 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:07:27,389 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:07:27,390 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:07:27,390 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:07:27,390 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:07:27,390 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:07:27,391 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:07:27,392 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:07:27,392 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 14:07:27,392 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 14:07:27,393 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:07:27,393 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 14:07:27,393 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:07:27,393 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:07:27,393 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:07:27,394 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:07:27,394 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 14:07:27,394 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 14:07:27,394 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:07:27,395 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:07:27,395 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:07:27,395 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:07:27,395 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:07:27,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:07:27,396 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:07:27,396 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:07:27,396 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:07:27,397 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:07:27,397 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:07:27,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:07:27,397 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:07:27,398 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:07:27,398 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_233a6186-b20d-4f36-ac36-b98e890f099e/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233a6186-b20d-4f36-ac36-b98e890f099e/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0cc9afdbf7eeaac0d52aedc8a0325c076240e2f45d0a3fe91081372b30b32137 [2022-11-23 14:07:27,632 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:07:27,657 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:07:27,660 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:07:27,661 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:07:27,662 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:07:27,663 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233a6186-b20d-4f36-ac36-b98e890f099e/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/pthread-ext/25_stack_longest-1.i [2022-11-23 14:07:30,724 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:07:30,991 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:07:30,992 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233a6186-b20d-4f36-ac36-b98e890f099e/sv-benchmarks/c/pthread-ext/25_stack_longest-1.i [2022-11-23 14:07:31,011 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233a6186-b20d-4f36-ac36-b98e890f099e/bin/utaipan-Q6hlc19bkW/data/56e737e5c/879c502a64604a1f939aa14977fb8c3a/FLAG2f3a18339 [2022-11-23 14:07:31,028 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233a6186-b20d-4f36-ac36-b98e890f099e/bin/utaipan-Q6hlc19bkW/data/56e737e5c/879c502a64604a1f939aa14977fb8c3a [2022-11-23 14:07:31,033 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:07:31,036 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:07:31,038 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:07:31,038 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:07:31,043 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:07:31,043 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:07:31" (1/1) ... [2022-11-23 14:07:31,044 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d047f72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:31, skipping insertion in model container [2022-11-23 14:07:31,045 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:07:31" (1/1) ... [2022-11-23 14:07:31,052 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:07:31,114 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:07:31,569 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233a6186-b20d-4f36-ac36-b98e890f099e/sv-benchmarks/c/pthread-ext/25_stack_longest-1.i[31040,31053] [2022-11-23 14:07:31,580 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:07:31,599 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:07:31,657 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233a6186-b20d-4f36-ac36-b98e890f099e/sv-benchmarks/c/pthread-ext/25_stack_longest-1.i[31040,31053] [2022-11-23 14:07:31,671 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:07:31,716 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:07:31,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:31 WrapperNode [2022-11-23 14:07:31,717 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:07:31,718 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:07:31,719 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:07:31,719 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:07:31,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:31" (1/1) ... [2022-11-23 14:07:31,763 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:31" (1/1) ... [2022-11-23 14:07:31,804 INFO L138 Inliner]: procedures = 177, calls = 34, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 182 [2022-11-23 14:07:31,804 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:07:31,805 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:07:31,805 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:07:31,806 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:07:31,818 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:31" (1/1) ... [2022-11-23 14:07:31,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:31" (1/1) ... [2022-11-23 14:07:31,822 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:31" (1/1) ... [2022-11-23 14:07:31,822 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:31" (1/1) ... [2022-11-23 14:07:31,828 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:31" (1/1) ... [2022-11-23 14:07:31,832 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:31" (1/1) ... [2022-11-23 14:07:31,835 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:31" (1/1) ... [2022-11-23 14:07:31,837 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:31" (1/1) ... [2022-11-23 14:07:31,840 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:07:31,848 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:07:31,848 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:07:31,848 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:07:31,859 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:31" (1/1) ... [2022-11-23 14:07:31,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:07:31,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233a6186-b20d-4f36-ac36-b98e890f099e/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:07:31,889 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233a6186-b20d-4f36-ac36-b98e890f099e/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:07:31,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233a6186-b20d-4f36-ac36-b98e890f099e/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:07:31,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 14:07:31,929 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-23 14:07:31,929 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-23 14:07:31,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 14:07:31,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:07:31,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 14:07:31,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:07:31,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:07:31,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:07:31,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:07:31,932 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 14:07:32,071 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:07:32,073 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:07:32,506 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:07:32,722 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:07:32,722 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-23 14:07:32,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:07:32 BoogieIcfgContainer [2022-11-23 14:07:32,725 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:07:32,727 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:07:32,728 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:07:32,734 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:07:32,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:07:31" (1/3) ... [2022-11-23 14:07:32,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f15b6fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:07:32, skipping insertion in model container [2022-11-23 14:07:32,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:31" (2/3) ... [2022-11-23 14:07:32,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f15b6fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:07:32, skipping insertion in model container [2022-11-23 14:07:32,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:07:32" (3/3) ... [2022-11-23 14:07:32,739 INFO L112 eAbstractionObserver]: Analyzing ICFG 25_stack_longest-1.i [2022-11-23 14:07:32,754 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-23 14:07:32,765 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:07:32,766 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-23 14:07:32,766 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 14:07:32,871 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-23 14:07:32,923 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 14:07:32,935 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 121 places, 125 transitions, 255 flow [2022-11-23 14:07:32,937 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 121 places, 125 transitions, 255 flow [2022-11-23 14:07:32,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 125 transitions, 255 flow [2022-11-23 14:07:32,991 INFO L130 PetriNetUnfolder]: 8/136 cut-off events. [2022-11-23 14:07:32,992 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 14:07:32,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 136 events. 8/136 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 138 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 100. Up to 4 conditions per place. [2022-11-23 14:07:33,000 INFO L119 LiptonReduction]: Number of co-enabled transitions 2436 [2022-11-23 14:07:41,673 INFO L134 LiptonReduction]: Checked pairs total: 2639 [2022-11-23 14:07:41,674 INFO L136 LiptonReduction]: Total number of compositions: 141 [2022-11-23 14:07:41,687 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 26 places, 27 transitions, 59 flow [2022-11-23 14:07:41,717 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 92 states, 71 states have (on average 2.492957746478873) internal successors, (177), 91 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:07:41,744 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:07:41,752 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;@3e11067d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:07:41,752 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-23 14:07:41,755 INFO L276 IsEmpty]: Start isEmpty. Operand has 92 states, 71 states have (on average 2.492957746478873) internal successors, (177), 91 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:07:41,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-23 14:07:41,760 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:07:41,761 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-23 14:07:41,762 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-23 14:07:41,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:07:41,769 INFO L85 PathProgramCache]: Analyzing trace with hash -642845599, now seen corresponding path program 1 times [2022-11-23 14:07:41,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:07:41,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142006027] [2022-11-23 14:07:41,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:07:41,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:07:41,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:07:41,891 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 14:07:41,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:07:41,932 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 14:07:41,933 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 14:07:41,935 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-11-23 14:07:41,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2022-11-23 14:07:41,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2022-11-23 14:07:41,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2022-11-23 14:07:41,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2022-11-23 14:07:41,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2022-11-23 14:07:41,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2022-11-23 14:07:41,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2022-11-23 14:07:41,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2022-11-23 14:07:41,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2022-11-23 14:07:41,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2022-11-23 14:07:41,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2022-11-23 14:07:41,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2022-11-23 14:07:41,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2022-11-23 14:07:41,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2022-11-23 14:07:41,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2022-11-23 14:07:41,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2022-11-23 14:07:41,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2022-11-23 14:07:41,943 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2022-11-23 14:07:41,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2022-11-23 14:07:41,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2022-11-23 14:07:41,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:07:41,948 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-23 14:07:41,952 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-23 14:07:41,952 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-23 14:07:42,018 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-23 14:07:42,027 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 14:07:42,027 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 205 places, 213 transitions, 438 flow [2022-11-23 14:07:42,028 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 205 places, 213 transitions, 438 flow [2022-11-23 14:07:42,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 213 transitions, 438 flow [2022-11-23 14:07:42,132 INFO L130 PetriNetUnfolder]: 15/237 cut-off events. [2022-11-23 14:07:42,132 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-23 14:07:42,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 237 events. 15/237 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 509 event pairs, 0 based on Foata normal form. 0/199 useless extension candidates. Maximal degree in co-relation 187. Up to 6 conditions per place. [2022-11-23 14:07:42,152 INFO L119 LiptonReduction]: Number of co-enabled transitions 20184 [2022-11-23 14:07:50,438 INFO L134 LiptonReduction]: Checked pairs total: 45440 [2022-11-23 14:07:50,438 INFO L136 LiptonReduction]: Total number of compositions: 193 [2022-11-23 14:07:50,446 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 76 places, 81 transitions, 174 flow [2022-11-23 14:07:50,720 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 6497 states, 6246 states have (on average 3.1775536343259687) internal successors, (19847), 6496 states have internal predecessors, (19847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:07:50,721 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:07:50,723 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;@3e11067d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:07:50,723 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2022-11-23 14:07:50,746 INFO L276 IsEmpty]: Start isEmpty. Operand has 6497 states, 6246 states have (on average 3.1775536343259687) internal successors, (19847), 6496 states have internal predecessors, (19847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:07:50,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-23 14:07:50,751 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:07:50,752 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:07:50,754 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-11-23 14:07:50,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:07:50,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1963457152, now seen corresponding path program 1 times [2022-11-23 14:07:50,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:07:50,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778629043] [2022-11-23 14:07:50,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:07:50,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:07:50,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:07:50,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:07:50,993 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:07:50,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778629043] [2022-11-23 14:07:50,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778629043] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:07:50,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:07:51,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:07:51,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79195544] [2022-11-23 14:07:51,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:07:51,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:07:51,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:07:51,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:07:51,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:07:51,067 INFO L87 Difference]: Start difference. First operand has 6497 states, 6246 states have (on average 3.1775536343259687) internal successors, (19847), 6496 states have internal predecessors, (19847), 0 states have call successors, (0), 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, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:07:51,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:07:51,474 INFO L93 Difference]: Finished difference Result 5883 states and 17359 transitions. [2022-11-23 14:07:51,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:07:51,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2022-11-23 14:07:51,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:07:51,606 INFO L225 Difference]: With dead ends: 5883 [2022-11-23 14:07:51,606 INFO L226 Difference]: Without dead ends: 5883 [2022-11-23 14:07:51,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:07:51,610 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 69 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:07:51,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 27 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:07:51,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5883 states. [2022-11-23 14:07:51,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5883 to 5343. [2022-11-23 14:07:51,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5343 states, 5233 states have (on average 3.0206382572138355) internal successors, (15807), 5342 states have internal predecessors, (15807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:07:51,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5343 states to 5343 states and 15807 transitions. [2022-11-23 14:07:51,944 INFO L78 Accepts]: Start accepts. Automaton has 5343 states and 15807 transitions. Word has length 7 [2022-11-23 14:07:51,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:07:51,944 INFO L495 AbstractCegarLoop]: Abstraction has 5343 states and 15807 transitions. [2022-11-23 14:07:51,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:07:51,945 INFO L276 IsEmpty]: Start isEmpty. Operand 5343 states and 15807 transitions. [2022-11-23 14:07:51,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-23 14:07:51,946 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:07:51,946 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:07:51,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 14:07:51,946 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-11-23 14:07:51,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:07:51,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1079107160, now seen corresponding path program 1 times [2022-11-23 14:07:51,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:07:51,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403101433] [2022-11-23 14:07:51,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:07:51,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:07:51,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:07:52,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:07:52,063 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:07:52,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403101433] [2022-11-23 14:07:52,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403101433] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:07:52,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:07:52,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 14:07:52,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466362714] [2022-11-23 14:07:52,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:07:52,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:07:52,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:07:52,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:07:52,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:07:52,066 INFO L87 Difference]: Start difference. First operand 5343 states and 15807 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:07:52,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:07:52,311 INFO L93 Difference]: Finished difference Result 6211 states and 18285 transitions. [2022-11-23 14:07:52,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:07:52,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-23 14:07:52,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:07:52,356 INFO L225 Difference]: With dead ends: 6211 [2022-11-23 14:07:52,356 INFO L226 Difference]: Without dead ends: 6211 [2022-11-23 14:07:52,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:07:52,358 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 28 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:07:52,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 20 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:07:52,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6211 states. [2022-11-23 14:07:52,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6211 to 6191. [2022-11-23 14:07:52,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6191 states, 6077 states have (on average 3.0021392134276783) internal successors, (18244), 6190 states have internal predecessors, (18244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:07:52,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6191 states to 6191 states and 18244 transitions. [2022-11-23 14:07:52,737 INFO L78 Accepts]: Start accepts. Automaton has 6191 states and 18244 transitions. Word has length 9 [2022-11-23 14:07:52,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:07:52,738 INFO L495 AbstractCegarLoop]: Abstraction has 6191 states and 18244 transitions. [2022-11-23 14:07:52,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:07:52,740 INFO L276 IsEmpty]: Start isEmpty. Operand 6191 states and 18244 transitions. [2022-11-23 14:07:52,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-23 14:07:52,744 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:07:52,744 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-23 14:07:52,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 14:07:52,745 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-11-23 14:07:52,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:07:52,745 INFO L85 PathProgramCache]: Analyzing trace with hash -481720338, now seen corresponding path program 1 times [2022-11-23 14:07:52,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:07:52,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435820479] [2022-11-23 14:07:52,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:07:52,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:07:52,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:07:52,798 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 14:07:52,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:07:52,820 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 14:07:52,824 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 14:07:52,825 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2022-11-23 14:07:52,825 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 31 remaining) [2022-11-23 14:07:52,825 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 31 remaining) [2022-11-23 14:07:52,826 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 31 remaining) [2022-11-23 14:07:52,826 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 31 remaining) [2022-11-23 14:07:52,826 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 31 remaining) [2022-11-23 14:07:52,826 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 31 remaining) [2022-11-23 14:07:52,827 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 31 remaining) [2022-11-23 14:07:52,827 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 31 remaining) [2022-11-23 14:07:52,827 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 31 remaining) [2022-11-23 14:07:52,828 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 31 remaining) [2022-11-23 14:07:52,828 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 31 remaining) [2022-11-23 14:07:52,828 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 31 remaining) [2022-11-23 14:07:52,828 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 31 remaining) [2022-11-23 14:07:52,829 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 31 remaining) [2022-11-23 14:07:52,829 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 31 remaining) [2022-11-23 14:07:52,829 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 31 remaining) [2022-11-23 14:07:52,829 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 31 remaining) [2022-11-23 14:07:52,830 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 31 remaining) [2022-11-23 14:07:52,830 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 31 remaining) [2022-11-23 14:07:52,830 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 31 remaining) [2022-11-23 14:07:52,831 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 31 remaining) [2022-11-23 14:07:52,831 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 31 remaining) [2022-11-23 14:07:52,831 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 31 remaining) [2022-11-23 14:07:52,831 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 31 remaining) [2022-11-23 14:07:52,836 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 31 remaining) [2022-11-23 14:07:52,836 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 31 remaining) [2022-11-23 14:07:52,837 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 31 remaining) [2022-11-23 14:07:52,837 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 31 remaining) [2022-11-23 14:07:52,837 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 31 remaining) [2022-11-23 14:07:52,838 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 31 remaining) [2022-11-23 14:07:52,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 14:07:52,838 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-23 14:07:52,839 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-23 14:07:52,840 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-23 14:07:52,903 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-23 14:07:52,907 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 14:07:52,908 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 289 places, 301 transitions, 623 flow [2022-11-23 14:07:52,908 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 289 places, 301 transitions, 623 flow [2022-11-23 14:07:52,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 289 places, 301 transitions, 623 flow [2022-11-23 14:07:53,088 INFO L130 PetriNetUnfolder]: 22/338 cut-off events. [2022-11-23 14:07:53,089 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-23 14:07:53,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354 conditions, 338 events. 22/338 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 994 event pairs, 0 based on Foata normal form. 0/282 useless extension candidates. Maximal degree in co-relation 274. Up to 8 conditions per place. [2022-11-23 14:07:53,117 INFO L119 LiptonReduction]: Number of co-enabled transitions 53244 [2022-11-23 14:08:05,553 INFO L134 LiptonReduction]: Checked pairs total: 122081 [2022-11-23 14:08:05,553 INFO L136 LiptonReduction]: Total number of compositions: 273 [2022-11-23 14:08:05,554 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 111 places, 119 transitions, 259 flow [2022-11-23 14:08:13,147 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 214698 states, 211907 states have (on average 4.229784764071031) internal successors, (896321), 214697 states have internal predecessors, (896321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:08:13,164 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:08:13,165 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;@3e11067d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:08:13,165 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2022-11-23 14:08:13,639 INFO L276 IsEmpty]: Start isEmpty. Operand has 214698 states, 211907 states have (on average 4.229784764071031) internal successors, (896321), 214697 states have internal predecessors, (896321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:08:13,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 14:08:13,641 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:08:13,642 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:08:13,642 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-23 14:08:13,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:08:13,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1071407394, now seen corresponding path program 1 times [2022-11-23 14:08:13,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:08:13,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371663101] [2022-11-23 14:08:13,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:08:13,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:08:13,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:08:14,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:08:14,390 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:08:14,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371663101] [2022-11-23 14:08:14,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371663101] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:08:14,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:08:14,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:08:14,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620214707] [2022-11-23 14:08:14,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:08:14,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:08:14,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:08:14,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:08:14,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:08:14,784 INFO L87 Difference]: Start difference. First operand has 214698 states, 211907 states have (on average 4.229784764071031) internal successors, (896321), 214697 states have internal predecessors, (896321), 0 states have call successors, (0), 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 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:08:19,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:08:19,429 INFO L93 Difference]: Finished difference Result 209387 states and 838988 transitions. [2022-11-23 14:08:19,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:08:19,430 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-23 14:08:19,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:08:22,134 INFO L225 Difference]: With dead ends: 209387 [2022-11-23 14:08:22,134 INFO L226 Difference]: Without dead ends: 209387 [2022-11-23 14:08:22,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:08:22,135 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 259 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:08:22,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 82 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 14:08:23,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209387 states. [2022-11-23 14:08:31,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209387 to 182097. [2022-11-23 14:08:32,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182097 states, 180876 states have (on average 4.045180123399456) internal successors, (731676), 182096 states have internal predecessors, (731676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:08:34,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182097 states to 182097 states and 731676 transitions. [2022-11-23 14:08:34,190 INFO L78 Accepts]: Start accepts. Automaton has 182097 states and 731676 transitions. Word has length 8 [2022-11-23 14:08:34,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:08:34,191 INFO L495 AbstractCegarLoop]: Abstraction has 182097 states and 731676 transitions. [2022-11-23 14:08:34,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:08:34,191 INFO L276 IsEmpty]: Start isEmpty. Operand 182097 states and 731676 transitions. [2022-11-23 14:08:34,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-23 14:08:34,192 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:08:34,192 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:08:34,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 14:08:34,193 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-23 14:08:34,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:08:34,194 INFO L85 PathProgramCache]: Analyzing trace with hash -299195493, now seen corresponding path program 1 times [2022-11-23 14:08:34,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:08:34,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44384612] [2022-11-23 14:08:34,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:08:34,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:08:34,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:08:34,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:08:34,251 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:08:34,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44384612] [2022-11-23 14:08:34,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44384612] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:08:34,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:08:34,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 14:08:34,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270007168] [2022-11-23 14:08:34,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:08:34,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:08:34,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:08:34,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:08:34,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:08:34,254 INFO L87 Difference]: Start difference. First operand 182097 states and 731676 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:08:38,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:08:38,155 INFO L93 Difference]: Finished difference Result 198841 states and 796419 transitions. [2022-11-23 14:08:38,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:08:38,167 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-23 14:08:38,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:08:39,613 INFO L225 Difference]: With dead ends: 198841 [2022-11-23 14:08:39,613 INFO L226 Difference]: Without dead ends: 198841 [2022-11-23 14:08:39,613 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 [2022-11-23 14:08:39,614 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 44 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:08:39,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 32 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:08:40,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198841 states. [2022-11-23 14:08:47,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198841 to 198781. [2022-11-23 14:08:48,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198781 states, 197549 states have (on average 4.030777174270687) internal successors, (796276), 198780 states have internal predecessors, (796276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:08:50,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198781 states to 198781 states and 796276 transitions. [2022-11-23 14:08:50,237 INFO L78 Accepts]: Start accepts. Automaton has 198781 states and 796276 transitions. Word has length 9 [2022-11-23 14:08:50,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:08:50,237 INFO L495 AbstractCegarLoop]: Abstraction has 198781 states and 796276 transitions. [2022-11-23 14:08:50,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:08:50,238 INFO L276 IsEmpty]: Start isEmpty. Operand 198781 states and 796276 transitions. [2022-11-23 14:08:50,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-23 14:08:50,241 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:08:50,242 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-11-23 14:08:50,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 14:08:50,242 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-23 14:08:50,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:08:50,243 INFO L85 PathProgramCache]: Analyzing trace with hash -236431688, now seen corresponding path program 1 times [2022-11-23 14:08:50,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:08:50,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862251717] [2022-11-23 14:08:50,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:08:50,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:08:50,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:08:50,254 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 14:08:50,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:08:50,267 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 14:08:50,268 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 14:08:50,268 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (40 of 41 remaining) [2022-11-23 14:08:50,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 41 remaining) [2022-11-23 14:08:50,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 41 remaining) [2022-11-23 14:08:50,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 41 remaining) [2022-11-23 14:08:50,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 41 remaining) [2022-11-23 14:08:50,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 41 remaining) [2022-11-23 14:08:50,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 41 remaining) [2022-11-23 14:08:50,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 41 remaining) [2022-11-23 14:08:50,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 41 remaining) [2022-11-23 14:08:50,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 41 remaining) [2022-11-23 14:08:50,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 41 remaining) [2022-11-23 14:08:50,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 41 remaining) [2022-11-23 14:08:50,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 41 remaining) [2022-11-23 14:08:50,271 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 41 remaining) [2022-11-23 14:08:50,271 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 41 remaining) [2022-11-23 14:08:50,271 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 41 remaining) [2022-11-23 14:08:50,271 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 41 remaining) [2022-11-23 14:08:50,271 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 41 remaining) [2022-11-23 14:08:50,272 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 41 remaining) [2022-11-23 14:08:50,272 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 41 remaining) [2022-11-23 14:08:50,272 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 41 remaining) [2022-11-23 14:08:50,272 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 41 remaining) [2022-11-23 14:08:50,272 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 41 remaining) [2022-11-23 14:08:50,273 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 41 remaining) [2022-11-23 14:08:50,273 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 41 remaining) [2022-11-23 14:08:50,273 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 41 remaining) [2022-11-23 14:08:50,273 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 41 remaining) [2022-11-23 14:08:50,273 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 41 remaining) [2022-11-23 14:08:50,274 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 41 remaining) [2022-11-23 14:08:50,274 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 41 remaining) [2022-11-23 14:08:50,274 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 41 remaining) [2022-11-23 14:08:50,274 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 41 remaining) [2022-11-23 14:08:50,274 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 41 remaining) [2022-11-23 14:08:50,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 41 remaining) [2022-11-23 14:08:50,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 41 remaining) [2022-11-23 14:08:50,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 41 remaining) [2022-11-23 14:08:50,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 41 remaining) [2022-11-23 14:08:50,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 41 remaining) [2022-11-23 14:08:50,276 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 41 remaining) [2022-11-23 14:08:50,276 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 41 remaining) [2022-11-23 14:08:50,276 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 41 remaining) [2022-11-23 14:08:50,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 14:08:50,276 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-23 14:08:50,277 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-23 14:08:50,277 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-23 14:08:50,328 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-23 14:08:50,331 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 14:08:50,332 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 373 places, 389 transitions, 810 flow [2022-11-23 14:08:50,332 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 373 places, 389 transitions, 810 flow [2022-11-23 14:08:50,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 373 places, 389 transitions, 810 flow [2022-11-23 14:08:50,437 INFO L130 PetriNetUnfolder]: 29/439 cut-off events. [2022-11-23 14:08:50,437 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-23 14:08:50,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 462 conditions, 439 events. 29/439 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1563 event pairs, 0 based on Foata normal form. 0/365 useless extension candidates. Maximal degree in co-relation 361. Up to 10 conditions per place. [2022-11-23 14:08:50,481 INFO L119 LiptonReduction]: Number of co-enabled transitions 101616