./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-ext/25_stack_longer-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430498dc-ee93-4098-846e-25761e0557fc/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430498dc-ee93-4098-846e-25761e0557fc/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430498dc-ee93-4098-846e-25761e0557fc/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430498dc-ee93-4098-846e-25761e0557fc/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-ext/25_stack_longer-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430498dc-ee93-4098-846e-25761e0557fc/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430498dc-ee93-4098-846e-25761e0557fc/bin/utaipan-gh47qXpMRh --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 dadbc714432dbabd9f10b5aceb2a2ff8af11608da70d21414f772d02695c7806 --- 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-2329fc7 [2022-12-14 11:40:45,124 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 11:40:45,125 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 11:40:45,139 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 11:40:45,139 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 11:40:45,140 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 11:40:45,141 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 11:40:45,142 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 11:40:45,143 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 11:40:45,144 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 11:40:45,144 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 11:40:45,145 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 11:40:45,145 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 11:40:45,146 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 11:40:45,147 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 11:40:45,148 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 11:40:45,148 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 11:40:45,149 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 11:40:45,150 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 11:40:45,151 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 11:40:45,152 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 11:40:45,153 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 11:40:45,154 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 11:40:45,155 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 11:40:45,157 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 11:40:45,157 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 11:40:45,157 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 11:40:45,158 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 11:40:45,159 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 11:40:45,159 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 11:40:45,159 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 11:40:45,160 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 11:40:45,160 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 11:40:45,161 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 11:40:45,162 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 11:40:45,162 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 11:40:45,162 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 11:40:45,163 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 11:40:45,163 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 11:40:45,163 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 11:40:45,164 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 11:40:45,165 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430498dc-ee93-4098-846e-25761e0557fc/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-12-14 11:40:45,180 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 11:40:45,180 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 11:40:45,181 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 11:40:45,181 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 11:40:45,181 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 11:40:45,181 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 11:40:45,182 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 11:40:45,182 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 11:40:45,182 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 11:40:45,182 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 11:40:45,182 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 11:40:45,182 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 11:40:45,182 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 11:40:45,182 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 11:40:45,182 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 11:40:45,183 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 11:40:45,183 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 11:40:45,183 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 11:40:45,183 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 11:40:45,183 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 11:40:45,184 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 11:40:45,184 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 11:40:45,184 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 11:40:45,184 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 11:40:45,184 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 11:40:45,184 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 11:40:45,184 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 11:40:45,184 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 11:40:45,185 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 11:40:45,185 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 11:40:45,185 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 11:40:45,185 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 11:40:45,185 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 11:40:45,185 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 11:40:45,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:40:45,185 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 11:40:45,185 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 11:40:45,186 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 11:40:45,186 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 11:40:45,186 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 11:40:45,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 11:40:45,186 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 11:40:45,186 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 11:40:45,186 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_430498dc-ee93-4098-846e-25761e0557fc/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430498dc-ee93-4098-846e-25761e0557fc/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dadbc714432dbabd9f10b5aceb2a2ff8af11608da70d21414f772d02695c7806 [2022-12-14 11:40:45,372 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 11:40:45,392 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 11:40:45,395 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 11:40:45,396 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 11:40:45,396 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 11:40:45,397 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430498dc-ee93-4098-846e-25761e0557fc/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/pthread-ext/25_stack_longer-2.i [2022-12-14 11:40:47,988 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 11:40:48,143 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 11:40:48,143 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430498dc-ee93-4098-846e-25761e0557fc/sv-benchmarks/c/pthread-ext/25_stack_longer-2.i [2022-12-14 11:40:48,152 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430498dc-ee93-4098-846e-25761e0557fc/bin/utaipan-gh47qXpMRh/data/014d280ee/826e757ede2541c19c2cf5a8c9747c8a/FLAG2c58b7c04 [2022-12-14 11:40:48,163 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430498dc-ee93-4098-846e-25761e0557fc/bin/utaipan-gh47qXpMRh/data/014d280ee/826e757ede2541c19c2cf5a8c9747c8a [2022-12-14 11:40:48,166 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 11:40:48,167 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 11:40:48,168 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 11:40:48,168 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 11:40:48,171 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 11:40:48,172 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:40:48" (1/1) ... [2022-12-14 11:40:48,173 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@516be5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:48, skipping insertion in model container [2022-12-14 11:40:48,173 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:40:48" (1/1) ... [2022-12-14 11:40:48,178 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 11:40:48,202 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 11:40:48,404 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430498dc-ee93-4098-846e-25761e0557fc/sv-benchmarks/c/pthread-ext/25_stack_longer-2.i[31039,31052] [2022-12-14 11:40:48,411 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:40:48,419 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 11:40:48,445 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430498dc-ee93-4098-846e-25761e0557fc/sv-benchmarks/c/pthread-ext/25_stack_longer-2.i[31039,31052] [2022-12-14 11:40:48,448 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:40:48,468 INFO L208 MainTranslator]: Completed translation [2022-12-14 11:40:48,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:48 WrapperNode [2022-12-14 11:40:48,469 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 11:40:48,470 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 11:40:48,470 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 11:40:48,470 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 11:40:48,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:48" (1/1) ... [2022-12-14 11:40:48,484 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:48" (1/1) ... [2022-12-14 11:40:48,502 INFO L138 Inliner]: procedures = 177, calls = 34, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 182 [2022-12-14 11:40:48,502 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 11:40:48,503 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 11:40:48,503 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 11:40:48,503 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 11:40:48,510 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:48" (1/1) ... [2022-12-14 11:40:48,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:48" (1/1) ... [2022-12-14 11:40:48,512 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:48" (1/1) ... [2022-12-14 11:40:48,513 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:48" (1/1) ... [2022-12-14 11:40:48,517 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:48" (1/1) ... [2022-12-14 11:40:48,520 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:48" (1/1) ... [2022-12-14 11:40:48,521 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:48" (1/1) ... [2022-12-14 11:40:48,522 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:48" (1/1) ... [2022-12-14 11:40:48,524 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 11:40:48,525 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 11:40:48,525 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 11:40:48,525 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 11:40:48,526 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:48" (1/1) ... [2022-12-14 11:40:48,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:40:48,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430498dc-ee93-4098-846e-25761e0557fc/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:40:48,549 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430498dc-ee93-4098-846e-25761e0557fc/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 11:40:48,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430498dc-ee93-4098-846e-25761e0557fc/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 11:40:48,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 11:40:48,600 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-12-14 11:40:48,601 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-12-14 11:40:48,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 11:40:48,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 11:40:48,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 11:40:48,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 11:40:48,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 11:40:48,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 11:40:48,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 11:40:48,603 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-14 11:40:48,722 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 11:40:48,724 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 11:40:48,961 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 11:40:49,077 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 11:40:49,078 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 11:40:49,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:40:49 BoogieIcfgContainer [2022-12-14 11:40:49,080 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 11:40:49,082 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 11:40:49,082 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 11:40:49,085 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 11:40:49,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 11:40:48" (1/3) ... [2022-12-14 11:40:49,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f873de4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:40:49, skipping insertion in model container [2022-12-14 11:40:49,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:48" (2/3) ... [2022-12-14 11:40:49,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f873de4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:40:49, skipping insertion in model container [2022-12-14 11:40:49,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:40:49" (3/3) ... [2022-12-14 11:40:49,088 INFO L112 eAbstractionObserver]: Analyzing ICFG 25_stack_longer-2.i [2022-12-14 11:40:49,097 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-14 11:40:49,107 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 11:40:49,107 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-12-14 11:40:49,107 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-14 11:40:49,153 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-14 11:40:49,184 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 11:40:49,199 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 121 places, 125 transitions, 255 flow [2022-12-14 11:40:49,202 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 121 places, 125 transitions, 255 flow [2022-12-14 11:40:49,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 125 transitions, 255 flow [2022-12-14 11:40:49,255 INFO L130 PetriNetUnfolder]: 8/136 cut-off events. [2022-12-14 11:40:49,255 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-14 11:40:49,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 136 events. 8/136 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 145 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 100. Up to 4 conditions per place. [2022-12-14 11:40:49,260 INFO L119 LiptonReduction]: Number of co-enabled transitions 2436 [2022-12-14 11:40:53,958 INFO L134 LiptonReduction]: Checked pairs total: 2550 [2022-12-14 11:40:53,958 INFO L136 LiptonReduction]: Total number of compositions: 139 [2022-12-14 11:40:53,965 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 26 places, 27 transitions, 59 flow [2022-12-14 11:40:53,979 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 92 states, 71 states have (on average 2.492957746478873) internal successors, (177), 91 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:40:53,991 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 11:40:53,996 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;@40b95ed9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 11:40:53,996 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-12-14 11:40:53,997 INFO L276 IsEmpty]: Start isEmpty. Operand has 92 states, 71 states have (on average 2.492957746478873) internal successors, (177), 91 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:40:54,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 11:40:54,001 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:40:54,001 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-12-14 11:40:54,001 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-14 11:40:54,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:40:54,005 INFO L85 PathProgramCache]: Analyzing trace with hash -703797148, now seen corresponding path program 1 times [2022-12-14 11:40:54,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:40:54,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642707666] [2022-12-14 11:40:54,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:40:54,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:40:54,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 11:40:54,089 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 11:40:54,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 11:40:54,114 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 11:40:54,116 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 11:40:54,117 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-12-14 11:40:54,118 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2022-12-14 11:40:54,118 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2022-12-14 11:40:54,118 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2022-12-14 11:40:54,119 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2022-12-14 11:40:54,119 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2022-12-14 11:40:54,119 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2022-12-14 11:40:54,119 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2022-12-14 11:40:54,119 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2022-12-14 11:40:54,119 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2022-12-14 11:40:54,119 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2022-12-14 11:40:54,119 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2022-12-14 11:40:54,120 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2022-12-14 11:40:54,120 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2022-12-14 11:40:54,120 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2022-12-14 11:40:54,120 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2022-12-14 11:40:54,120 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2022-12-14 11:40:54,120 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2022-12-14 11:40:54,120 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2022-12-14 11:40:54,121 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2022-12-14 11:40:54,121 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2022-12-14 11:40:54,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 11:40:54,123 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 11:40:54,125 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-14 11:40:54,125 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-14 11:40:54,160 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-14 11:40:54,163 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 11:40:54,164 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 205 places, 213 transitions, 438 flow [2022-12-14 11:40:54,164 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 205 places, 213 transitions, 438 flow [2022-12-14 11:40:54,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 213 transitions, 438 flow [2022-12-14 11:40:54,199 INFO L130 PetriNetUnfolder]: 15/237 cut-off events. [2022-12-14 11:40:54,199 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-14 11:40:54,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 237 events. 15/237 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 510 event pairs, 0 based on Foata normal form. 0/199 useless extension candidates. Maximal degree in co-relation 187. Up to 6 conditions per place. [2022-12-14 11:40:54,208 INFO L119 LiptonReduction]: Number of co-enabled transitions 20184 [2022-12-14 11:40:59,328 INFO L134 LiptonReduction]: Checked pairs total: 43918 [2022-12-14 11:40:59,329 INFO L136 LiptonReduction]: Total number of compositions: 199 [2022-12-14 11:40:59,329 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 76 places, 81 transitions, 174 flow [2022-12-14 11:40:59,450 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 6497 states, 6246 states have (on average 3.1775536343259687) internal successors, (19847), 6496 states have internal predecessors, (19847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:40:59,451 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 11:40:59,452 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;@40b95ed9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 11:40:59,452 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2022-12-14 11:40:59,465 INFO L276 IsEmpty]: Start isEmpty. Operand has 6497 states, 6246 states have (on average 3.1775536343259687) internal successors, (19847), 6496 states have internal predecessors, (19847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:40:59,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 11:40:59,466 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:40:59,466 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:40:59,466 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-12-14 11:40:59,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:40:59,467 INFO L85 PathProgramCache]: Analyzing trace with hash -902882460, now seen corresponding path program 1 times [2022-12-14 11:40:59,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:40:59,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655077507] [2022-12-14 11:40:59,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:40:59,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:40:59,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:40:59,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:40:59,548 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:40:59,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655077507] [2022-12-14 11:40:59,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655077507] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:40:59,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:40:59,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 11:40:59,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250905295] [2022-12-14 11:40:59,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:40:59,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:40:59,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:40:59,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:40:59,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:40:59,585 INFO L87 Difference]: Start difference. First operand has 6497 states, 6246 states have (on average 3.1775536343259687) internal successors, (19847), 6496 states have internal predecessors, (19847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:40:59,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:40:59,821 INFO L93 Difference]: Finished difference Result 5543 states and 16377 transitions. [2022-12-14 11:40:59,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:40:59,823 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-12-14 11:40:59,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:40:59,872 INFO L225 Difference]: With dead ends: 5543 [2022-12-14 11:40:59,872 INFO L226 Difference]: Without dead ends: 5543 [2022-12-14 11:40:59,873 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 [2022-12-14 11:40:59,875 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 67 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:40:59,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 27 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:40:59,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5543 states. [2022-12-14 11:41:00,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5543 to 5023. [2022-12-14 11:41:00,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5023 states, 4933 states have (on average 3.0166227447800527) internal successors, (14881), 5022 states have internal predecessors, (14881), 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) [2022-12-14 11:41:00,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5023 states to 5023 states and 14881 transitions. [2022-12-14 11:41:00,068 INFO L78 Accepts]: Start accepts. Automaton has 5023 states and 14881 transitions. Word has length 7 [2022-12-14 11:41:00,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:41:00,068 INFO L495 AbstractCegarLoop]: Abstraction has 5023 states and 14881 transitions. [2022-12-14 11:41:00,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:41:00,069 INFO L276 IsEmpty]: Start isEmpty. Operand 5023 states and 14881 transitions. [2022-12-14 11:41:00,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 11:41:00,069 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:41:00,069 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:41:00,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 11:41:00,070 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-12-14 11:41:00,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:41:00,070 INFO L85 PathProgramCache]: Analyzing trace with hash 2048631453, now seen corresponding path program 1 times [2022-12-14 11:41:00,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:41:00,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088868554] [2022-12-14 11:41:00,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:41:00,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:41:00,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:41:00,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:41:00,150 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:41:00,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088868554] [2022-12-14 11:41:00,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088868554] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:41:00,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:41:00,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 11:41:00,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141673558] [2022-12-14 11:41:00,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:41:00,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:41:00,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:41:00,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:41:00,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:41:00,153 INFO L87 Difference]: Start difference. First operand 5023 states and 14881 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:41:00,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:41:00,252 INFO L93 Difference]: Finished difference Result 4111 states and 12247 transitions. [2022-12-14 11:41:00,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:41:00,253 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-12-14 11:41:00,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:41:00,268 INFO L225 Difference]: With dead ends: 4111 [2022-12-14 11:41:00,269 INFO L226 Difference]: Without dead ends: 4111 [2022-12-14 11:41:00,269 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 [2022-12-14 11:41:00,270 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 58 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:41:00,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 10 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:41:00,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4111 states. [2022-12-14 11:41:00,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4111 to 4111. [2022-12-14 11:41:00,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4111 states, 4069 states have (on average 3.0098304251658883) internal successors, (12247), 4110 states have internal predecessors, (12247), 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) [2022-12-14 11:41:00,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4111 states to 4111 states and 12247 transitions. [2022-12-14 11:41:00,372 INFO L78 Accepts]: Start accepts. Automaton has 4111 states and 12247 transitions. Word has length 9 [2022-12-14 11:41:00,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:41:00,372 INFO L495 AbstractCegarLoop]: Abstraction has 4111 states and 12247 transitions. [2022-12-14 11:41:00,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:41:00,372 INFO L276 IsEmpty]: Start isEmpty. Operand 4111 states and 12247 transitions. [2022-12-14 11:41:00,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 11:41:00,373 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:41:00,373 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:41:00,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 11:41:00,373 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-12-14 11:41:00,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:41:00,374 INFO L85 PathProgramCache]: Analyzing trace with hash -916933221, now seen corresponding path program 1 times [2022-12-14 11:41:00,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:41:00,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88307305] [2022-12-14 11:41:00,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:41:00,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:41:00,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:41:00,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:41:00,411 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:41:00,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88307305] [2022-12-14 11:41:00,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88307305] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:41:00,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:41:00,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 11:41:00,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110230477] [2022-12-14 11:41:00,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:41:00,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:41:00,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:41:00,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:41:00,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:41:00,413 INFO L87 Difference]: Start difference. First operand 4111 states and 12247 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:41:00,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:41:00,566 INFO L93 Difference]: Finished difference Result 4979 states and 14725 transitions. [2022-12-14 11:41:00,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:41:00,567 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-12-14 11:41:00,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:41:00,589 INFO L225 Difference]: With dead ends: 4979 [2022-12-14 11:41:00,589 INFO L226 Difference]: Without dead ends: 4979 [2022-12-14 11:41:00,590 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 [2022-12-14 11:41:00,590 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 27 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:41:00,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 20 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:41:00,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4979 states. [2022-12-14 11:41:00,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4979 to 4959. [2022-12-14 11:41:00,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4959 states, 4913 states have (on average 2.988805210665581) internal successors, (14684), 4958 states have internal predecessors, (14684), 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) [2022-12-14 11:41:00,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4959 states to 4959 states and 14684 transitions. [2022-12-14 11:41:00,696 INFO L78 Accepts]: Start accepts. Automaton has 4959 states and 14684 transitions. Word has length 10 [2022-12-14 11:41:00,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:41:00,697 INFO L495 AbstractCegarLoop]: Abstraction has 4959 states and 14684 transitions. [2022-12-14 11:41:00,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:41:00,697 INFO L276 IsEmpty]: Start isEmpty. Operand 4959 states and 14684 transitions. [2022-12-14 11:41:00,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 11:41:00,698 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:41:00,698 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-14 11:41:00,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 11:41:00,698 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-12-14 11:41:00,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:41:00,698 INFO L85 PathProgramCache]: Analyzing trace with hash -711912252, now seen corresponding path program 1 times [2022-12-14 11:41:00,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:41:00,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924996083] [2022-12-14 11:41:00,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:41:00,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:41:00,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 11:41:00,706 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 11:41:00,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 11:41:00,713 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 11:41:00,714 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 11:41:00,714 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2022-12-14 11:41:00,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 31 remaining) [2022-12-14 11:41:00,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 31 remaining) [2022-12-14 11:41:00,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 31 remaining) [2022-12-14 11:41:00,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 31 remaining) [2022-12-14 11:41:00,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 31 remaining) [2022-12-14 11:41:00,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 31 remaining) [2022-12-14 11:41:00,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 31 remaining) [2022-12-14 11:41:00,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 31 remaining) [2022-12-14 11:41:00,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 31 remaining) [2022-12-14 11:41:00,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 31 remaining) [2022-12-14 11:41:00,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 31 remaining) [2022-12-14 11:41:00,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 31 remaining) [2022-12-14 11:41:00,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 31 remaining) [2022-12-14 11:41:00,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 31 remaining) [2022-12-14 11:41:00,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 31 remaining) [2022-12-14 11:41:00,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 31 remaining) [2022-12-14 11:41:00,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 31 remaining) [2022-12-14 11:41:00,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 31 remaining) [2022-12-14 11:41:00,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 31 remaining) [2022-12-14 11:41:00,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 31 remaining) [2022-12-14 11:41:00,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 31 remaining) [2022-12-14 11:41:00,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 31 remaining) [2022-12-14 11:41:00,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 31 remaining) [2022-12-14 11:41:00,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 31 remaining) [2022-12-14 11:41:00,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 31 remaining) [2022-12-14 11:41:00,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 31 remaining) [2022-12-14 11:41:00,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 31 remaining) [2022-12-14 11:41:00,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 31 remaining) [2022-12-14 11:41:00,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 31 remaining) [2022-12-14 11:41:00,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 31 remaining) [2022-12-14 11:41:00,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 11:41:00,717 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-12-14 11:41:00,718 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-14 11:41:00,718 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-14 11:41:00,744 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-14 11:41:00,746 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 11:41:00,747 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 289 places, 301 transitions, 623 flow [2022-12-14 11:41:00,747 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 289 places, 301 transitions, 623 flow [2022-12-14 11:41:00,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 289 places, 301 transitions, 623 flow [2022-12-14 11:41:00,805 INFO L130 PetriNetUnfolder]: 22/338 cut-off events. [2022-12-14 11:41:00,805 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-12-14 11:41:00,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354 conditions, 338 events. 22/338 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 998 event pairs, 0 based on Foata normal form. 0/282 useless extension candidates. Maximal degree in co-relation 274. Up to 8 conditions per place. [2022-12-14 11:41:00,823 INFO L119 LiptonReduction]: Number of co-enabled transitions 53244 [2022-12-14 11:41:08,301 INFO L134 LiptonReduction]: Checked pairs total: 136208 [2022-12-14 11:41:08,301 INFO L136 LiptonReduction]: Total number of compositions: 268 [2022-12-14 11:41:08,302 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 111 places, 119 transitions, 259 flow [2022-12-14 11:41:12,355 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 214698 states, 211907 states have (on average 4.229784764071031) internal successors, (896321), 214697 states have internal predecessors, (896321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:41:12,356 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 11:41:12,356 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;@40b95ed9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 11:41:12,356 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2022-12-14 11:41:12,814 INFO L276 IsEmpty]: Start isEmpty. Operand has 214698 states, 211907 states have (on average 4.229784764071031) internal successors, (896321), 214697 states have internal predecessors, (896321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:41:12,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 11:41:12,814 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:41:12,814 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:41:12,815 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-12-14 11:41:12,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:41:12,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1987561018, now seen corresponding path program 1 times [2022-12-14 11:41:12,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:41:12,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920620488] [2022-12-14 11:41:12,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:41:12,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:41:12,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:41:12,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:41:12,853 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:41:12,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920620488] [2022-12-14 11:41:12,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920620488] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:41:12,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:41:12,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:41:12,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139667393] [2022-12-14 11:41:12,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:41:12,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 11:41:12,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:41:12,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 11:41:12,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 11:41:13,119 INFO L87 Difference]: Start difference. First operand has 214698 states, 211907 states have (on average 4.229784764071031) internal successors, (896321), 214697 states have internal predecessors, (896321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:41:15,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:41:15,542 INFO L93 Difference]: Finished difference Result 221495 states and 886834 transitions. [2022-12-14 11:41:15,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 11:41:15,543 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 11:41:15,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:41:17,139 INFO L225 Difference]: With dead ends: 221495 [2022-12-14 11:41:17,140 INFO L226 Difference]: Without dead ends: 221495 [2022-12-14 11:41:17,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:41:17,141 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 263 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 11:41:17,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 81 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 11:41:17,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221495 states. [2022-12-14 11:41:22,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221495 to 192985. [2022-12-14 11:41:22,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192985 states, 191522 states have (on average 4.045415148129196) internal successors, (774786), 192984 states have internal predecessors, (774786), 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) [2022-12-14 11:41:23,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192985 states to 192985 states and 774786 transitions. [2022-12-14 11:41:23,755 INFO L78 Accepts]: Start accepts. Automaton has 192985 states and 774786 transitions. Word has length 8 [2022-12-14 11:41:23,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:41:23,755 INFO L495 AbstractCegarLoop]: Abstraction has 192985 states and 774786 transitions. [2022-12-14 11:41:23,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:41:23,755 INFO L276 IsEmpty]: Start isEmpty. Operand 192985 states and 774786 transitions. [2022-12-14 11:41:23,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 11:41:23,756 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:41:23,756 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:41:23,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 11:41:23,756 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-12-14 11:41:23,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:41:23,757 INFO L85 PathProgramCache]: Analyzing trace with hash 2053737679, now seen corresponding path program 1 times [2022-12-14 11:41:23,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:41:23,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914541279] [2022-12-14 11:41:23,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:41:23,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:41:23,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:41:23,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:41:23,802 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:41:23,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914541279] [2022-12-14 11:41:23,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914541279] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:41:23,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:41:23,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 11:41:23,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082599813] [2022-12-14 11:41:23,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:41:23,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:41:23,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:41:23,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:41:23,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:41:23,804 INFO L87 Difference]: Start difference. First operand 192985 states and 774786 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:41:25,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:41:25,673 INFO L93 Difference]: Finished difference Result 209729 states and 839529 transitions. [2022-12-14 11:41:25,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:41:25,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-12-14 11:41:25,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:41:27,125 INFO L225 Difference]: With dead ends: 209729 [2022-12-14 11:41:27,125 INFO L226 Difference]: Without dead ends: 209729 [2022-12-14 11:41:27,126 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 [2022-12-14 11:41:27,126 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 44 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:41:27,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 32 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:41:27,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209729 states. [2022-12-14 11:41:32,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209729 to 209669. [2022-12-14 11:41:32,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209669 states, 208195 states have (on average 4.031729868632772) internal successors, (839386), 209668 states have internal predecessors, (839386), 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) [2022-12-14 11:41:33,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209669 states to 209669 states and 839386 transitions. [2022-12-14 11:41:33,761 INFO L78 Accepts]: Start accepts. Automaton has 209669 states and 839386 transitions. Word has length 9 [2022-12-14 11:41:33,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:41:33,762 INFO L495 AbstractCegarLoop]: Abstraction has 209669 states and 839386 transitions. [2022-12-14 11:41:33,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:41:33,762 INFO L276 IsEmpty]: Start isEmpty. Operand 209669 states and 839386 transitions. [2022-12-14 11:41:33,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 11:41:33,765 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:41:33,765 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-12-14 11:41:33,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 11:41:33,766 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-12-14 11:41:33,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:41:33,766 INFO L85 PathProgramCache]: Analyzing trace with hash -668379318, now seen corresponding path program 1 times [2022-12-14 11:41:33,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:41:33,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734946443] [2022-12-14 11:41:33,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:41:33,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:41:33,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 11:41:33,777 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 11:41:33,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 11:41:33,786 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 11:41:33,786 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 11:41:33,786 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (40 of 41 remaining) [2022-12-14 11:41:33,787 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 41 remaining) [2022-12-14 11:41:33,787 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 41 remaining) [2022-12-14 11:41:33,787 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 41 remaining) [2022-12-14 11:41:33,787 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 41 remaining) [2022-12-14 11:41:33,787 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 41 remaining) [2022-12-14 11:41:33,787 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 41 remaining) [2022-12-14 11:41:33,787 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 41 remaining) [2022-12-14 11:41:33,787 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 41 remaining) [2022-12-14 11:41:33,787 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 41 remaining) [2022-12-14 11:41:33,787 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 41 remaining) [2022-12-14 11:41:33,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 41 remaining) [2022-12-14 11:41:33,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 41 remaining) [2022-12-14 11:41:33,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 41 remaining) [2022-12-14 11:41:33,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 41 remaining) [2022-12-14 11:41:33,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 41 remaining) [2022-12-14 11:41:33,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 41 remaining) [2022-12-14 11:41:33,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 41 remaining) [2022-12-14 11:41:33,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 41 remaining) [2022-12-14 11:41:33,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 41 remaining) [2022-12-14 11:41:33,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 41 remaining) [2022-12-14 11:41:33,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 41 remaining) [2022-12-14 11:41:33,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 41 remaining) [2022-12-14 11:41:33,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 41 remaining) [2022-12-14 11:41:33,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 41 remaining) [2022-12-14 11:41:33,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 41 remaining) [2022-12-14 11:41:33,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 41 remaining) [2022-12-14 11:41:33,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 41 remaining) [2022-12-14 11:41:33,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 41 remaining) [2022-12-14 11:41:33,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 41 remaining) [2022-12-14 11:41:33,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 41 remaining) [2022-12-14 11:41:33,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 41 remaining) [2022-12-14 11:41:33,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 41 remaining) [2022-12-14 11:41:33,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 41 remaining) [2022-12-14 11:41:33,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 41 remaining) [2022-12-14 11:41:33,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 41 remaining) [2022-12-14 11:41:33,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 41 remaining) [2022-12-14 11:41:33,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 41 remaining) [2022-12-14 11:41:33,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 41 remaining) [2022-12-14 11:41:33,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 41 remaining) [2022-12-14 11:41:33,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 41 remaining) [2022-12-14 11:41:33,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 11:41:33,790 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-12-14 11:41:33,791 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-14 11:41:33,791 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-12-14 11:41:33,837 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-14 11:41:33,840 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 11:41:33,840 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 373 places, 389 transitions, 810 flow [2022-12-14 11:41:33,840 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 373 places, 389 transitions, 810 flow [2022-12-14 11:41:33,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 373 places, 389 transitions, 810 flow [2022-12-14 11:41:33,904 INFO L130 PetriNetUnfolder]: 29/439 cut-off events. [2022-12-14 11:41:33,904 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-12-14 11:41:33,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 462 conditions, 439 events. 29/439 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1577 event pairs, 0 based on Foata normal form. 0/365 useless extension candidates. Maximal degree in co-relation 361. Up to 10 conditions per place. [2022-12-14 11:41:33,925 INFO L119 LiptonReduction]: Number of co-enabled transitions 101616 [2022-12-14 11:41:43,531 INFO L134 LiptonReduction]: Checked pairs total: 258564 [2022-12-14 11:41:43,531 INFO L136 LiptonReduction]: Total number of compositions: 346 [2022-12-14 11:41:43,532 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 146 places, 157 transitions, 346 flow