./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-ext/34_double_lock_p2_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90aeba31-81ba-42b9-aa68-8399f9c8f69d/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90aeba31-81ba-42b9-aa68-8399f9c8f69d/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90aeba31-81ba-42b9-aa68-8399f9c8f69d/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90aeba31-81ba-42b9-aa68-8399f9c8f69d/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-ext/34_double_lock_p2_vs.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90aeba31-81ba-42b9-aa68-8399f9c8f69d/bin/utaipan-7li7fVZpFI/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90aeba31-81ba-42b9-aa68-8399f9c8f69d/bin/utaipan-7li7fVZpFI --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 92ecee121b9ddff062603596761b7b6e384463e9908bd9593577f02dd4911207 --- 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-5e519f3 [2022-11-03 02:52:10,946 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:52:10,948 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:52:10,999 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:52:11,000 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:52:11,006 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:52:11,007 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:52:11,009 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:52:11,011 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:52:11,012 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:52:11,013 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:52:11,014 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:52:11,014 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:52:11,015 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:52:11,017 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:52:11,025 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:52:11,027 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:52:11,036 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:52:11,039 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:52:11,041 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:52:11,043 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:52:11,050 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:52:11,051 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:52:11,052 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:52:11,056 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:52:11,056 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:52:11,057 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:52:11,058 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:52:11,064 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:52:11,065 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:52:11,066 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:52:11,067 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:52:11,070 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:52:11,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:52:11,073 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:52:11,073 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:52:11,075 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:52:11,075 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:52:11,076 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:52:11,077 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:52:11,078 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:52:11,079 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90aeba31-81ba-42b9-aa68-8399f9c8f69d/bin/utaipan-7li7fVZpFI/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-03 02:52:11,135 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:52:11,135 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:52:11,136 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:52:11,136 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:52:11,139 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:52:11,139 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:52:11,139 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:52:11,139 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:52:11,140 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:52:11,140 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:52:11,141 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:52:11,141 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:52:11,142 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:52:11,142 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:52:11,142 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:52:11,142 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:52:11,143 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:52:11,143 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:52:11,144 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:52:11,144 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:52:11,144 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-03 02:52:11,144 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:52:11,144 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:52:11,147 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:52:11,147 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:52:11,147 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:52:11,147 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:52:11,148 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-03 02:52:11,148 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:52:11,148 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:52:11,148 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:52:11,149 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:52:11,149 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:52:11,149 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:52:11,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:52:11,150 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:52:11,150 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:52:11,150 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:52:11,150 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:52:11,151 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:52:11,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:52:11,151 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:52:11,151 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:52:11,151 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_90aeba31-81ba-42b9-aa68-8399f9c8f69d/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90aeba31-81ba-42b9-aa68-8399f9c8f69d/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 92ecee121b9ddff062603596761b7b6e384463e9908bd9593577f02dd4911207 [2022-11-03 02:52:11,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:52:11,484 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:52:11,487 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:52:11,488 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:52:11,489 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:52:11,491 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90aeba31-81ba-42b9-aa68-8399f9c8f69d/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/pthread-ext/34_double_lock_p2_vs.i [2022-11-03 02:52:11,572 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90aeba31-81ba-42b9-aa68-8399f9c8f69d/bin/utaipan-7li7fVZpFI/data/e89ea6e8a/5e0d4dc10b5d411e934774cd36378c0e/FLAGe76cdcef4 [2022-11-03 02:52:12,258 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:52:12,259 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90aeba31-81ba-42b9-aa68-8399f9c8f69d/sv-benchmarks/c/pthread-ext/34_double_lock_p2_vs.i [2022-11-03 02:52:12,273 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90aeba31-81ba-42b9-aa68-8399f9c8f69d/bin/utaipan-7li7fVZpFI/data/e89ea6e8a/5e0d4dc10b5d411e934774cd36378c0e/FLAGe76cdcef4 [2022-11-03 02:52:12,548 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90aeba31-81ba-42b9-aa68-8399f9c8f69d/bin/utaipan-7li7fVZpFI/data/e89ea6e8a/5e0d4dc10b5d411e934774cd36378c0e [2022-11-03 02:52:12,551 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:52:12,553 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:52:12,554 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:52:12,555 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:52:12,562 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:52:12,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:52:12" (1/1) ... [2022-11-03 02:52:12,564 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10351dd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:52:12, skipping insertion in model container [2022-11-03 02:52:12,564 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:52:12" (1/1) ... [2022-11-03 02:52:12,573 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:52:12,615 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:52:13,150 WARN L230 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_90aeba31-81ba-42b9-aa68-8399f9c8f69d/sv-benchmarks/c/pthread-ext/34_double_lock_p2_vs.i[30847,30860] [2022-11-03 02:52:13,162 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:52:13,172 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:52:13,236 WARN L230 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_90aeba31-81ba-42b9-aa68-8399f9c8f69d/sv-benchmarks/c/pthread-ext/34_double_lock_p2_vs.i[30847,30860] [2022-11-03 02:52:13,240 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:52:13,297 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:52:13,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:52:13 WrapperNode [2022-11-03 02:52:13,298 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:52:13,299 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:52:13,299 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:52:13,299 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:52:13,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:52:13" (1/1) ... [2022-11-03 02:52:13,341 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:52:13" (1/1) ... [2022-11-03 02:52:13,387 INFO L138 Inliner]: procedures = 175, calls = 36, calls flagged for inlining = 18, calls inlined = 24, statements flattened = 165 [2022-11-03 02:52:13,388 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:52:13,389 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:52:13,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:52:13,390 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:52:13,401 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:52:13" (1/1) ... [2022-11-03 02:52:13,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:52:13" (1/1) ... [2022-11-03 02:52:13,417 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:52:13" (1/1) ... [2022-11-03 02:52:13,418 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:52:13" (1/1) ... [2022-11-03 02:52:13,423 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:52:13" (1/1) ... [2022-11-03 02:52:13,428 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:52:13" (1/1) ... [2022-11-03 02:52:13,430 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:52:13" (1/1) ... [2022-11-03 02:52:13,446 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:52:13" (1/1) ... [2022-11-03 02:52:13,449 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:52:13,450 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:52:13,450 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:52:13,451 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:52:13,462 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:52:13" (1/1) ... [2022-11-03 02:52:13,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:52:13,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90aeba31-81ba-42b9-aa68-8399f9c8f69d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:52:13,496 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90aeba31-81ba-42b9-aa68-8399f9c8f69d/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:52:13,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90aeba31-81ba-42b9-aa68-8399f9c8f69d/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:52:13,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:52:13,555 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2022-11-03 02:52:13,555 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2022-11-03 02:52:13,555 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-03 02:52:13,555 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-03 02:52:13,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:52:13,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:52:13,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:52:13,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:52:13,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:52:13,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:52:13,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:52:13,558 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-03 02:52:13,746 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:52:13,749 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:52:14,193 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:52:14,482 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:52:14,490 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-03 02:52:14,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:52:14 BoogieIcfgContainer [2022-11-03 02:52:14,493 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:52:14,497 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:52:14,497 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:52:14,503 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:52:14,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:52:12" (1/3) ... [2022-11-03 02:52:14,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a68518a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:52:14, skipping insertion in model container [2022-11-03 02:52:14,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:52:13" (2/3) ... [2022-11-03 02:52:14,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a68518a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:52:14, skipping insertion in model container [2022-11-03 02:52:14,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:52:14" (3/3) ... [2022-11-03 02:52:14,508 INFO L112 eAbstractionObserver]: Analyzing ICFG 34_double_lock_p2_vs.i [2022-11-03 02:52:14,522 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-03 02:52:14,536 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:52:14,539 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-03 02:52:14,539 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-03 02:52:14,667 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-03 02:52:14,744 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-03 02:52:14,767 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 86 transitions, 182 flow [2022-11-03 02:52:14,782 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 86 transitions, 182 flow [2022-11-03 02:52:14,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 86 transitions, 182 flow [2022-11-03 02:52:14,855 INFO L130 PetriNetUnfolder]: 7/96 cut-off events. [2022-11-03 02:52:14,855 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-03 02:52:14,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 96 events. 7/96 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 199 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 75. Up to 4 conditions per place. [2022-11-03 02:52:14,864 INFO L118 LiptonReduction]: Number of co-enabled transitions 2224 [2022-11-03 02:52:21,683 INFO L133 LiptonReduction]: Checked pairs total: 6156 [2022-11-03 02:52:21,683 INFO L135 LiptonReduction]: Total number of compositions: 91 [2022-11-03 02:52:21,701 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 37 places, 34 transitions, 78 flow [2022-11-03 02:52:21,809 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 642 states, 623 states have (on average 2.956661316211878) internal successors, (1842), 641 states have internal predecessors, (1842), 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) [2022-11-03 02:52:21,863 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:52:21,872 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;@200da541, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:52:21,873 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-11-03 02:52:21,877 INFO L276 IsEmpty]: Start isEmpty. Operand has 642 states, 623 states have (on average 2.956661316211878) internal successors, (1842), 641 states have internal predecessors, (1842), 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) [2022-11-03 02:52:21,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-03 02:52:21,885 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:52:21,886 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-03 02:52:21,887 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 02:52:21,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:52:21,898 INFO L85 PathProgramCache]: Analyzing trace with hash -318731953, now seen corresponding path program 1 times [2022-11-03 02:52:21,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:52:21,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759457954] [2022-11-03 02:52:21,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:52:21,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:52:22,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:52:22,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:52:22,353 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:52:22,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759457954] [2022-11-03 02:52:22,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759457954] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:52:22,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:52:22,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-03 02:52:22,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252265688] [2022-11-03 02:52:22,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:52:22,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:52:22,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:52:22,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:52:22,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:52:22,402 INFO L87 Difference]: Start difference. First operand has 642 states, 623 states have (on average 2.956661316211878) internal successors, (1842), 641 states have internal predecessors, (1842), 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 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) [2022-11-03 02:52:22,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:52:22,534 INFO L93 Difference]: Finished difference Result 247 states and 660 transitions. [2022-11-03 02:52:22,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:52:22,536 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 [2022-11-03 02:52:22,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:52:22,557 INFO L225 Difference]: With dead ends: 247 [2022-11-03 02:52:22,558 INFO L226 Difference]: Without dead ends: 247 [2022-11-03 02:52:22,559 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 [2022-11-03 02:52:22,564 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 11 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:52:22,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 4 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:52:22,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2022-11-03 02:52:22,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2022-11-03 02:52:22,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 247 states have (on average 2.672064777327935) internal successors, (660), 246 states have internal predecessors, (660), 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) [2022-11-03 02:52:22,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 660 transitions. [2022-11-03 02:52:22,646 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 660 transitions. Word has length 6 [2022-11-03 02:52:22,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:52:22,647 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 660 transitions. [2022-11-03 02:52:22,647 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) [2022-11-03 02:52:22,647 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 660 transitions. [2022-11-03 02:52:22,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-03 02:52:22,648 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:52:22,649 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-03 02:52:22,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:52:22,649 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 02:52:22,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:52:22,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1358753952, now seen corresponding path program 1 times [2022-11-03 02:52:22,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:52:22,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68331278] [2022-11-03 02:52:22,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:52:22,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:52:22,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:52:22,677 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 02:52:22,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:52:22,739 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 02:52:22,739 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 02:52:22,742 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2022-11-03 02:52:22,745 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2022-11-03 02:52:22,746 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2022-11-03 02:52:22,747 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2022-11-03 02:52:22,747 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2022-11-03 02:52:22,748 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2022-11-03 02:52:22,755 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2022-11-03 02:52:22,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2022-11-03 02:52:22,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2022-11-03 02:52:22,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2022-11-03 02:52:22,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2022-11-03 02:52:22,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2022-11-03 02:52:22,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2022-11-03 02:52:22,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2022-11-03 02:52:22,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2022-11-03 02:52:22,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2022-11-03 02:52:22,761 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2022-11-03 02:52:22,761 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2022-11-03 02:52:22,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:52:22,766 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-03 02:52:22,768 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-03 02:52:22,768 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-03 02:52:22,834 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-03 02:52:22,840 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-03 02:52:22,841 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 131 places, 132 transitions, 288 flow [2022-11-03 02:52:22,841 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 131 places, 132 transitions, 288 flow [2022-11-03 02:52:22,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 132 transitions, 288 flow [2022-11-03 02:52:22,907 INFO L130 PetriNetUnfolder]: 9/138 cut-off events. [2022-11-03 02:52:22,907 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-03 02:52:22,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 138 events. 9/138 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 362 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 147. Up to 6 conditions per place. [2022-11-03 02:52:22,917 INFO L118 LiptonReduction]: Number of co-enabled transitions 5560 [2022-11-03 02:52:31,060 INFO L133 LiptonReduction]: Checked pairs total: 19390 [2022-11-03 02:52:31,061 INFO L135 LiptonReduction]: Total number of compositions: 120 [2022-11-03 02:52:31,062 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 62 places, 57 transitions, 138 flow [2022-11-03 02:52:31,670 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 12866 states, 12697 states have (on average 3.960148066472395) internal successors, (50282), 12865 states have internal predecessors, (50282), 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) [2022-11-03 02:52:31,672 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:52:31,673 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;@200da541, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:52:31,674 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2022-11-03 02:52:31,716 INFO L276 IsEmpty]: Start isEmpty. Operand has 12866 states, 12697 states have (on average 3.960148066472395) internal successors, (50282), 12865 states have internal predecessors, (50282), 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) [2022-11-03 02:52:31,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-03 02:52:31,717 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:52:31,718 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:52:31,718 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-03 02:52:31,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:52:31,720 INFO L85 PathProgramCache]: Analyzing trace with hash -557513839, now seen corresponding path program 1 times [2022-11-03 02:52:31,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:52:31,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35479992] [2022-11-03 02:52:31,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:52:31,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:52:31,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:52:31,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:52:31,800 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:52:31,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35479992] [2022-11-03 02:52:31,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35479992] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:52:31,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:52:31,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-03 02:52:31,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847784172] [2022-11-03 02:52:31,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:52:31,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 02:52:31,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:52:31,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 02:52:31,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:52:31,837 INFO L87 Difference]: Start difference. First operand has 12866 states, 12697 states have (on average 3.960148066472395) internal successors, (50282), 12865 states have internal predecessors, (50282), 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 7.0) 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) [2022-11-03 02:52:32,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:52:32,179 INFO L93 Difference]: Finished difference Result 7282 states and 27302 transitions. [2022-11-03 02:52:32,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 02:52:32,180 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 7.0) 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 [2022-11-03 02:52:32,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:52:32,324 INFO L225 Difference]: With dead ends: 7282 [2022-11-03 02:52:32,324 INFO L226 Difference]: Without dead ends: 7282 [2022-11-03 02:52:32,326 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 [2022-11-03 02:52:32,332 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:52:32,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:52:32,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7282 states. [2022-11-03 02:52:32,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7282 to 7282. [2022-11-03 02:52:32,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7282 states, 7282 states have (on average 3.7492447129909365) internal successors, (27302), 7281 states have internal predecessors, (27302), 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) [2022-11-03 02:52:32,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7282 states to 7282 states and 27302 transitions. [2022-11-03 02:52:32,757 INFO L78 Accepts]: Start accepts. Automaton has 7282 states and 27302 transitions. Word has length 7 [2022-11-03 02:52:32,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:52:32,757 INFO L495 AbstractCegarLoop]: Abstraction has 7282 states and 27302 transitions. [2022-11-03 02:52:32,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 7.0) 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) [2022-11-03 02:52:32,758 INFO L276 IsEmpty]: Start isEmpty. Operand 7282 states and 27302 transitions. [2022-11-03 02:52:32,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-03 02:52:32,758 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:52:32,759 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:52:32,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:52:32,759 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-03 02:52:32,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:52:32,760 INFO L85 PathProgramCache]: Analyzing trace with hash -557513864, now seen corresponding path program 1 times [2022-11-03 02:52:32,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:52:32,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312630488] [2022-11-03 02:52:32,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:52:32,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:52:32,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:52:32,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:52:32,914 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:52:32,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312630488] [2022-11-03 02:52:32,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312630488] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:52:32,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:52:32,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-03 02:52:32,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330972330] [2022-11-03 02:52:32,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:52:32,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:52:32,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:52:32,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:52:32,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:52:32,917 INFO L87 Difference]: Start difference. First operand 7282 states and 27302 transitions. Second operand has 3 states, 2 states have (on average 3.5) 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) [2022-11-03 02:52:33,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:52:33,127 INFO L93 Difference]: Finished difference Result 5770 states and 21366 transitions. [2022-11-03 02:52:33,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:52:33,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) 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 [2022-11-03 02:52:33,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:52:33,268 INFO L225 Difference]: With dead ends: 5770 [2022-11-03 02:52:33,268 INFO L226 Difference]: Without dead ends: 5770 [2022-11-03 02:52:33,268 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 [2022-11-03 02:52:33,269 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 15 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:52:33,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 10 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:52:33,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5770 states. [2022-11-03 02:52:33,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5770 to 5770. [2022-11-03 02:52:33,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5770 states, 5770 states have (on average 3.702946273830156) internal successors, (21366), 5769 states have internal predecessors, (21366), 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) [2022-11-03 02:52:33,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5770 states to 5770 states and 21366 transitions. [2022-11-03 02:52:33,670 INFO L78 Accepts]: Start accepts. Automaton has 5770 states and 21366 transitions. Word has length 7 [2022-11-03 02:52:33,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:52:33,670 INFO L495 AbstractCegarLoop]: Abstraction has 5770 states and 21366 transitions. [2022-11-03 02:52:33,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) 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) [2022-11-03 02:52:33,671 INFO L276 IsEmpty]: Start isEmpty. Operand 5770 states and 21366 transitions. [2022-11-03 02:52:33,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-03 02:52:33,672 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:52:33,672 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:52:33,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:52:33,673 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-03 02:52:33,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:52:33,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1100123398, now seen corresponding path program 1 times [2022-11-03 02:52:33,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:52:33,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758469642] [2022-11-03 02:52:33,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:52:33,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:52:33,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:52:33,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:52:33,734 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:52:33,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758469642] [2022-11-03 02:52:33,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758469642] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:52:33,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:52:33,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:52:33,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638929667] [2022-11-03 02:52:33,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:52:33,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:52:33,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:52:33,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:52:33,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:52:33,737 INFO L87 Difference]: Start difference. First operand 5770 states and 21366 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2022-11-03 02:52:33,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:52:33,994 INFO L93 Difference]: Finished difference Result 5567 states and 19637 transitions. [2022-11-03 02:52:33,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:52:33,994 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 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 [2022-11-03 02:52:33,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:52:34,033 INFO L225 Difference]: With dead ends: 5567 [2022-11-03 02:52:34,033 INFO L226 Difference]: Without dead ends: 5567 [2022-11-03 02:52:34,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:52:34,035 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 38 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:52:34,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 20 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:52:34,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5567 states. [2022-11-03 02:52:34,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5567 to 5007. [2022-11-03 02:52:34,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5007 states, 5007 states have (on average 3.6367086079488717) internal successors, (18209), 5006 states have internal predecessors, (18209), 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) [2022-11-03 02:52:34,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5007 states to 5007 states and 18209 transitions. [2022-11-03 02:52:34,453 INFO L78 Accepts]: Start accepts. Automaton has 5007 states and 18209 transitions. Word has length 9 [2022-11-03 02:52:34,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:52:34,453 INFO L495 AbstractCegarLoop]: Abstraction has 5007 states and 18209 transitions. [2022-11-03 02:52:34,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2022-11-03 02:52:34,454 INFO L276 IsEmpty]: Start isEmpty. Operand 5007 states and 18209 transitions. [2022-11-03 02:52:34,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-03 02:52:34,457 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:52:34,458 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:52:34,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:52:34,458 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-03 02:52:34,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:52:34,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1100137908, now seen corresponding path program 1 times [2022-11-03 02:52:34,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:52:34,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342008005] [2022-11-03 02:52:34,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:52:34,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:52:34,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:52:34,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:52:34,628 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:52:34,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342008005] [2022-11-03 02:52:34,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342008005] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:52:34,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:52:34,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:52:34,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916776973] [2022-11-03 02:52:34,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:52:34,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:52:34,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:52:34,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:52:34,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:52:34,632 INFO L87 Difference]: Start difference. First operand 5007 states and 18209 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2022-11-03 02:52:35,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:52:35,029 INFO L93 Difference]: Finished difference Result 4727 states and 16767 transitions. [2022-11-03 02:52:35,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:52:35,030 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 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 [2022-11-03 02:52:35,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:52:35,068 INFO L225 Difference]: With dead ends: 4727 [2022-11-03 02:52:35,068 INFO L226 Difference]: Without dead ends: 4727 [2022-11-03 02:52:35,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:52:35,070 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 38 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:52:35,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 24 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:52:35,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4727 states. [2022-11-03 02:52:35,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4727 to 4447. [2022-11-03 02:52:35,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4447 states, 4447 states have (on average 3.578367438722734) internal successors, (15913), 4446 states have internal predecessors, (15913), 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) [2022-11-03 02:52:35,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4447 states to 4447 states and 15913 transitions. [2022-11-03 02:52:35,461 INFO L78 Accepts]: Start accepts. Automaton has 4447 states and 15913 transitions. Word has length 9 [2022-11-03 02:52:35,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:52:35,462 INFO L495 AbstractCegarLoop]: Abstraction has 4447 states and 15913 transitions. [2022-11-03 02:52:35,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2022-11-03 02:52:35,463 INFO L276 IsEmpty]: Start isEmpty. Operand 4447 states and 15913 transitions. [2022-11-03 02:52:35,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-03 02:52:35,466 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:52:35,466 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:52:35,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:52:35,467 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-03 02:52:35,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:52:35,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1693564694, now seen corresponding path program 1 times [2022-11-03 02:52:35,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:52:35,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382119591] [2022-11-03 02:52:35,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:52:35,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:52:35,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:52:35,622 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:52:35,622 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:52:35,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382119591] [2022-11-03 02:52:35,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382119591] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:52:35,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:52:35,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:52:35,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089351665] [2022-11-03 02:52:35,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:52:35,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:52:35,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:52:35,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:52:35,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:52:35,626 INFO L87 Difference]: Start difference. First operand 4447 states and 15913 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:52:35,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:52:35,736 INFO L93 Difference]: Finished difference Result 4237 states and 15185 transitions. [2022-11-03 02:52:35,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:52:35,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-03 02:52:35,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:52:35,764 INFO L225 Difference]: With dead ends: 4237 [2022-11-03 02:52:35,764 INFO L226 Difference]: Without dead ends: 4237 [2022-11-03 02:52:35,765 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 [2022-11-03 02:52:35,766 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 34 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:52:35,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 6 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:52:35,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4237 states. [2022-11-03 02:52:35,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4237 to 4237. [2022-11-03 02:52:35,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4237 states, 4237 states have (on average 3.583903705451971) internal successors, (15185), 4236 states have internal predecessors, (15185), 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) [2022-11-03 02:52:35,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4237 states to 4237 states and 15185 transitions. [2022-11-03 02:52:35,941 INFO L78 Accepts]: Start accepts. Automaton has 4237 states and 15185 transitions. Word has length 13 [2022-11-03 02:52:35,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:52:35,942 INFO L495 AbstractCegarLoop]: Abstraction has 4237 states and 15185 transitions. [2022-11-03 02:52:35,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:52:35,942 INFO L276 IsEmpty]: Start isEmpty. Operand 4237 states and 15185 transitions. [2022-11-03 02:52:35,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 02:52:35,948 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:52:35,948 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:52:35,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:52:35,949 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-03 02:52:35,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:52:35,950 INFO L85 PathProgramCache]: Analyzing trace with hash -960758239, now seen corresponding path program 1 times [2022-11-03 02:52:35,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:52:35,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043663212] [2022-11-03 02:52:35,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:52:35,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:52:35,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:52:36,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:52:36,056 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:52:36,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043663212] [2022-11-03 02:52:36,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043663212] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:52:36,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:52:36,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:52:36,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114877721] [2022-11-03 02:52:36,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:52:36,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:52:36,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:52:36,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:52:36,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:52:36,060 INFO L87 Difference]: Start difference. First operand 4237 states and 15185 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:52:36,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:52:36,319 INFO L93 Difference]: Finished difference Result 5230 states and 18396 transitions. [2022-11-03 02:52:36,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:52:36,321 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-03 02:52:36,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:52:36,348 INFO L225 Difference]: With dead ends: 5230 [2022-11-03 02:52:36,348 INFO L226 Difference]: Without dead ends: 5230 [2022-11-03 02:52:36,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:52:36,350 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 56 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:52:36,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 14 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:52:36,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5230 states. [2022-11-03 02:52:36,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5230 to 3572. [2022-11-03 02:52:36,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3572 states, 3572 states have (on average 3.6024636058230683) internal successors, (12868), 3571 states have internal predecessors, (12868), 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) [2022-11-03 02:52:36,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3572 states to 3572 states and 12868 transitions. [2022-11-03 02:52:36,531 INFO L78 Accepts]: Start accepts. Automaton has 3572 states and 12868 transitions. Word has length 14 [2022-11-03 02:52:36,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:52:36,532 INFO L495 AbstractCegarLoop]: Abstraction has 3572 states and 12868 transitions. [2022-11-03 02:52:36,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:52:36,532 INFO L276 IsEmpty]: Start isEmpty. Operand 3572 states and 12868 transitions. [2022-11-03 02:52:36,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 02:52:36,534 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:52:36,534 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:52:36,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 02:52:36,535 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-03 02:52:36,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:52:36,538 INFO L85 PathProgramCache]: Analyzing trace with hash -960901181, now seen corresponding path program 1 times [2022-11-03 02:52:36,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:52:36,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311513011] [2022-11-03 02:52:36,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:52:36,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:52:36,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:52:36,620 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:52:36,620 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:52:36,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311513011] [2022-11-03 02:52:36,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311513011] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:52:36,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:52:36,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:52:36,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539082634] [2022-11-03 02:52:36,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:52:36,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:52:36,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:52:36,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:52:36,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:52:36,623 INFO L87 Difference]: Start difference. First operand 3572 states and 12868 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) [2022-11-03 02:52:36,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:52:36,810 INFO L93 Difference]: Finished difference Result 3782 states and 13386 transitions. [2022-11-03 02:52:36,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:52:36,810 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 [2022-11-03 02:52:36,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:52:36,833 INFO L225 Difference]: With dead ends: 3782 [2022-11-03 02:52:36,834 INFO L226 Difference]: Without dead ends: 3782 [2022-11-03 02:52:36,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:52:36,835 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 71 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:52:36,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 24 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:52:36,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3782 states. [2022-11-03 02:52:36,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3782 to 3292. [2022-11-03 02:52:37,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3292 states, 3292 states have (on average 3.606925880923451) internal successors, (11874), 3291 states have internal predecessors, (11874), 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) [2022-11-03 02:52:37,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3292 states to 3292 states and 11874 transitions. [2022-11-03 02:52:37,067 INFO L78 Accepts]: Start accepts. Automaton has 3292 states and 11874 transitions. Word has length 14 [2022-11-03 02:52:37,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:52:37,068 INFO L495 AbstractCegarLoop]: Abstraction has 3292 states and 11874 transitions. [2022-11-03 02:52:37,068 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) [2022-11-03 02:52:37,068 INFO L276 IsEmpty]: Start isEmpty. Operand 3292 states and 11874 transitions. [2022-11-03 02:52:37,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 02:52:37,070 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:52:37,070 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:52:37,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 02:52:37,071 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-03 02:52:37,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:52:37,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1676858155, now seen corresponding path program 1 times [2022-11-03 02:52:37,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:52:37,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531499170] [2022-11-03 02:52:37,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:52:37,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:52:37,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:52:37,093 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 02:52:37,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:52:37,111 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 02:52:37,111 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 02:52:37,112 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 26 remaining) [2022-11-03 02:52:37,112 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 26 remaining) [2022-11-03 02:52:37,112 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 26 remaining) [2022-11-03 02:52:37,113 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 26 remaining) [2022-11-03 02:52:37,113 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 26 remaining) [2022-11-03 02:52:37,113 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 26 remaining) [2022-11-03 02:52:37,113 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 26 remaining) [2022-11-03 02:52:37,114 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 26 remaining) [2022-11-03 02:52:37,114 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 26 remaining) [2022-11-03 02:52:37,114 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 26 remaining) [2022-11-03 02:52:37,115 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 26 remaining) [2022-11-03 02:52:37,115 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 26 remaining) [2022-11-03 02:52:37,115 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 26 remaining) [2022-11-03 02:52:37,115 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 26 remaining) [2022-11-03 02:52:37,116 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 26 remaining) [2022-11-03 02:52:37,116 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 26 remaining) [2022-11-03 02:52:37,116 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 26 remaining) [2022-11-03 02:52:37,116 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 26 remaining) [2022-11-03 02:52:37,117 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 26 remaining) [2022-11-03 02:52:37,117 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 26 remaining) [2022-11-03 02:52:37,117 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 26 remaining) [2022-11-03 02:52:37,118 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 26 remaining) [2022-11-03 02:52:37,118 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 26 remaining) [2022-11-03 02:52:37,118 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 26 remaining) [2022-11-03 02:52:37,118 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 26 remaining) [2022-11-03 02:52:37,119 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 26 remaining) [2022-11-03 02:52:37,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 02:52:37,119 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:52:37,121 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-03 02:52:37,121 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-03 02:52:37,175 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-03 02:52:37,179 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-03 02:52:37,179 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 176 places, 178 transitions, 398 flow [2022-11-03 02:52:37,180 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 176 places, 178 transitions, 398 flow [2022-11-03 02:52:37,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 178 transitions, 398 flow [2022-11-03 02:52:37,220 INFO L130 PetriNetUnfolder]: 11/180 cut-off events. [2022-11-03 02:52:37,221 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-03 02:52:37,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 180 events. 11/180 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 529 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 194. Up to 8 conditions per place. [2022-11-03 02:52:37,231 INFO L118 LiptonReduction]: Number of co-enabled transitions 10520 [2022-11-03 02:52:48,135 INFO L133 LiptonReduction]: Checked pairs total: 37199 [2022-11-03 02:52:48,136 INFO L135 LiptonReduction]: Total number of compositions: 168 [2022-11-03 02:52:48,137 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 85 places, 78 transitions, 198 flow [2022-11-03 02:52:56,701 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 207210 states, 205665 states have (on average 4.946913670289062) internal successors, (1017407), 207209 states have internal predecessors, (1017407), 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) [2022-11-03 02:52:56,705 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:52:56,705 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;@200da541, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:52:56,706 INFO L358 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2022-11-03 02:52:57,126 INFO L276 IsEmpty]: Start isEmpty. Operand has 207210 states, 205665 states have (on average 4.946913670289062) internal successors, (1017407), 207209 states have internal predecessors, (1017407), 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) [2022-11-03 02:52:57,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-03 02:52:57,127 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:52:57,127 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:52:57,128 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2022-11-03 02:52:57,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:52:57,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1853376487, now seen corresponding path program 1 times [2022-11-03 02:52:57,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:52:57,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875859320] [2022-11-03 02:52:57,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:52:57,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:52:57,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:52:57,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:52:57,178 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:52:57,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875859320] [2022-11-03 02:52:57,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875859320] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:52:57,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:52:57,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-03 02:52:57,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718257118] [2022-11-03 02:52:57,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:52:57,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:52:57,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:52:57,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:52:57,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:52:57,554 INFO L87 Difference]: Start difference. First operand has 207210 states, 205665 states have (on average 4.946913670289062) internal successors, (1017407), 207209 states have internal predecessors, (1017407), 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 3.5) 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) [2022-11-03 02:52:59,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:52:59,921 INFO L93 Difference]: Finished difference Result 89658 states and 421850 transitions. [2022-11-03 02:52:59,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:52:59,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) 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 [2022-11-03 02:52:59,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:53:01,688 INFO L225 Difference]: With dead ends: 89658 [2022-11-03 02:53:01,688 INFO L226 Difference]: Without dead ends: 89658 [2022-11-03 02:53:01,688 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 [2022-11-03 02:53:01,689 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 18 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:53:01,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 10 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:53:02,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89658 states. [2022-11-03 02:53:06,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89658 to 89658. [2022-11-03 02:53:06,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89658 states, 89658 states have (on average 4.705101608333891) internal successors, (421850), 89657 states have internal predecessors, (421850), 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) [2022-11-03 02:53:07,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89658 states to 89658 states and 421850 transitions. [2022-11-03 02:53:07,665 INFO L78 Accepts]: Start accepts. Automaton has 89658 states and 421850 transitions. Word has length 7 [2022-11-03 02:53:07,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:53:07,665 INFO L495 AbstractCegarLoop]: Abstraction has 89658 states and 421850 transitions. [2022-11-03 02:53:07,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) 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) [2022-11-03 02:53:07,666 INFO L276 IsEmpty]: Start isEmpty. Operand 89658 states and 421850 transitions. [2022-11-03 02:53:07,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-03 02:53:07,666 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:53:07,666 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:53:07,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 02:53:07,667 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2022-11-03 02:53:07,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:53:07,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1316607399, now seen corresponding path program 1 times [2022-11-03 02:53:07,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:53:07,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895479251] [2022-11-03 02:53:07,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:53:07,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:53:07,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:53:07,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:53:07,745 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:53:07,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895479251] [2022-11-03 02:53:07,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895479251] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:53:07,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:53:07,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:53:07,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415193980] [2022-11-03 02:53:07,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:53:07,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:53:07,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:53:07,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:53:07,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:53:07,748 INFO L87 Difference]: Start difference. First operand 89658 states and 421850 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2022-11-03 02:53:10,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:53:10,113 INFO L93 Difference]: Finished difference Result 100585 states and 436088 transitions. [2022-11-03 02:53:10,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:53:10,114 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 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 [2022-11-03 02:53:10,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:53:11,104 INFO L225 Difference]: With dead ends: 100585 [2022-11-03 02:53:11,105 INFO L226 Difference]: Without dead ends: 100585 [2022-11-03 02:53:11,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:53:11,106 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 48 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:53:11,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 20 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:53:12,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100585 states. [2022-11-03 02:53:15,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100585 to 86725. [2022-11-03 02:53:15,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86725 states, 86725 states have (on average 4.537330642836553) internal successors, (393500), 86724 states have internal predecessors, (393500), 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) [2022-11-03 02:53:16,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86725 states to 86725 states and 393500 transitions. [2022-11-03 02:53:16,846 INFO L78 Accepts]: Start accepts. Automaton has 86725 states and 393500 transitions. Word has length 9 [2022-11-03 02:53:16,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:53:16,846 INFO L495 AbstractCegarLoop]: Abstraction has 86725 states and 393500 transitions. [2022-11-03 02:53:16,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2022-11-03 02:53:16,846 INFO L276 IsEmpty]: Start isEmpty. Operand 86725 states and 393500 transitions. [2022-11-03 02:53:16,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-03 02:53:16,847 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:53:16,847 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:53:16,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 02:53:16,847 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2022-11-03 02:53:16,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:53:16,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1316606343, now seen corresponding path program 1 times [2022-11-03 02:53:16,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:53:16,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609648272] [2022-11-03 02:53:16,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:53:16,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:53:16,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:53:16,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:53:16,905 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:53:16,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609648272] [2022-11-03 02:53:16,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609648272] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:53:16,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:53:16,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:53:16,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182860503] [2022-11-03 02:53:16,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:53:16,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:53:16,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:53:16,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:53:16,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:53:16,908 INFO L87 Difference]: Start difference. First operand 86725 states and 393500 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2022-11-03 02:53:18,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:53:18,982 INFO L93 Difference]: Finished difference Result 80159 states and 359060 transitions. [2022-11-03 02:53:18,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:53:18,983 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 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 [2022-11-03 02:53:18,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:53:19,635 INFO L225 Difference]: With dead ends: 80159 [2022-11-03 02:53:19,635 INFO L226 Difference]: Without dead ends: 80159 [2022-11-03 02:53:19,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:53:19,636 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 48 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:53:19,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 24 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:53:19,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80159 states. [2022-11-03 02:53:23,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80159 to 79249. [2022-11-03 02:53:23,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79249 states, 79249 states have (on average 4.487589748766546) internal successors, (355637), 79248 states have internal predecessors, (355637), 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) [2022-11-03 02:53:23,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79249 states to 79249 states and 355637 transitions. [2022-11-03 02:53:23,893 INFO L78 Accepts]: Start accepts. Automaton has 79249 states and 355637 transitions. Word has length 9 [2022-11-03 02:53:23,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:53:23,894 INFO L495 AbstractCegarLoop]: Abstraction has 79249 states and 355637 transitions. [2022-11-03 02:53:23,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2022-11-03 02:53:23,894 INFO L276 IsEmpty]: Start isEmpty. Operand 79249 states and 355637 transitions. [2022-11-03 02:53:23,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-03 02:53:23,895 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:53:23,895 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:53:23,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 02:53:23,895 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2022-11-03 02:53:23,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:53:23,896 INFO L85 PathProgramCache]: Analyzing trace with hash -924782064, now seen corresponding path program 1 times [2022-11-03 02:53:23,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:53:23,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146404459] [2022-11-03 02:53:23,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:53:23,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:53:23,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:53:23,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:53:23,966 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:53:23,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146404459] [2022-11-03 02:53:23,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146404459] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:53:23,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:53:23,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:53:23,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78714459] [2022-11-03 02:53:23,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:53:23,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:53:23,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:53:23,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:53:23,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:53:23,969 INFO L87 Difference]: Start difference. First operand 79249 states and 355637 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:53:25,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:53:25,648 INFO L93 Difference]: Finished difference Result 68364 states and 306882 transitions. [2022-11-03 02:53:25,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:53:25,649 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-03 02:53:25,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:53:26,200 INFO L225 Difference]: With dead ends: 68364 [2022-11-03 02:53:26,201 INFO L226 Difference]: Without dead ends: 68364 [2022-11-03 02:53:26,201 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 [2022-11-03 02:53:26,201 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 44 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:53:26,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 6 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:53:26,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68364 states. [2022-11-03 02:53:29,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68364 to 68364. [2022-11-03 02:53:29,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68364 states, 68364 states have (on average 4.488941548183254) internal successors, (306882), 68363 states have internal predecessors, (306882), 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)