./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_94-alloc_region_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a 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_782b60a7-7994-41c7-affb-60306bed76b4/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782b60a7-7994-41c7-affb-60306bed76b4/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782b60a7-7994-41c7-affb-60306bed76b4/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782b60a7-7994-41c7-affb-60306bed76b4/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_94-alloc_region_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782b60a7-7994-41c7-affb-60306bed76b4/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782b60a7-7994-41c7-affb-60306bed76b4/bin/uautomizer-ZsLfNo2U6R --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7faac9952fd378b53dcd8f21391daa9cc75834f7be2a5ad0c70d96fc8524bd08 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 18:28:19,332 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:28:19,335 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:28:19,384 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:28:19,385 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:28:19,389 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:28:19,392 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:28:19,397 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:28:19,399 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:28:19,405 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:28:19,407 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:28:19,409 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:28:19,410 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:28:19,413 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:28:19,415 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:28:19,419 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:28:19,420 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:28:19,422 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:28:19,423 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:28:19,430 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:28:19,433 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:28:19,434 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:28:19,436 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:28:19,437 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:28:19,441 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:28:19,441 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:28:19,441 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:28:19,442 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:28:19,443 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:28:19,444 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:28:19,445 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:28:19,446 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:28:19,446 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:28:19,447 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:28:19,448 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:28:19,449 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:28:19,450 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:28:19,450 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:28:19,450 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:28:19,451 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:28:19,452 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:28:19,453 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782b60a7-7994-41c7-affb-60306bed76b4/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-25 18:28:19,475 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:28:19,475 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:28:19,475 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:28:19,476 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:28:19,476 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:28:19,477 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:28:19,486 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:28:19,486 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:28:19,486 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:28:19,487 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:28:19,487 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:28:19,487 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 18:28:19,487 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:28:19,488 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:28:19,488 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:28:19,488 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 18:28:19,488 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:28:19,488 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 18:28:19,489 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 18:28:19,489 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:28:19,489 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 18:28:19,489 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:28:19,489 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 18:28:19,490 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:28:19,490 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:28:19,490 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:28:19,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:28:19,491 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:28:19,491 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:28:19,491 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 18:28:19,491 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:28:19,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:28:19,492 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:28:19,492 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 18:28:19,492 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:28:19,492 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:28:19,492 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_782b60a7-7994-41c7-affb-60306bed76b4/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782b60a7-7994-41c7-affb-60306bed76b4/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7faac9952fd378b53dcd8f21391daa9cc75834f7be2a5ad0c70d96fc8524bd08 [2022-11-25 18:28:19,753 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:28:19,783 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:28:19,786 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:28:19,788 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:28:19,788 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:28:19,790 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782b60a7-7994-41c7-affb-60306bed76b4/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/goblint-regression/28-race_reach_94-alloc_region_racing.i [2022-11-25 18:28:22,870 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:28:23,272 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:28:23,276 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782b60a7-7994-41c7-affb-60306bed76b4/sv-benchmarks/c/goblint-regression/28-race_reach_94-alloc_region_racing.i [2022-11-25 18:28:23,298 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782b60a7-7994-41c7-affb-60306bed76b4/bin/uautomizer-ZsLfNo2U6R/data/3c637da4c/f74dd15f069245198ecbd0f8d5754371/FLAG522a84f6d [2022-11-25 18:28:23,326 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782b60a7-7994-41c7-affb-60306bed76b4/bin/uautomizer-ZsLfNo2U6R/data/3c637da4c/f74dd15f069245198ecbd0f8d5754371 [2022-11-25 18:28:23,332 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:28:23,334 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:28:23,337 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:28:23,337 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:28:23,342 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:28:23,343 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:28:23" (1/1) ... [2022-11-25 18:28:23,344 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@228e751d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:28:23, skipping insertion in model container [2022-11-25 18:28:23,345 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:28:23" (1/1) ... [2022-11-25 18:28:23,354 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:28:23,423 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:28:24,086 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_782b60a7-7994-41c7-affb-60306bed76b4/sv-benchmarks/c/goblint-regression/28-race_reach_94-alloc_region_racing.i[58135,58148] [2022-11-25 18:28:24,120 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:28:24,135 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:28:24,190 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_782b60a7-7994-41c7-affb-60306bed76b4/sv-benchmarks/c/goblint-regression/28-race_reach_94-alloc_region_racing.i[58135,58148] [2022-11-25 18:28:24,217 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:28:24,296 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:28:24,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:28:24 WrapperNode [2022-11-25 18:28:24,297 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:28:24,298 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:28:24,298 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:28:24,298 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:28:24,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:28:24" (1/1) ... [2022-11-25 18:28:24,373 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:28:24" (1/1) ... [2022-11-25 18:28:24,418 INFO L138 Inliner]: procedures = 377, calls = 72, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 248 [2022-11-25 18:28:24,419 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:28:24,420 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:28:24,420 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:28:24,420 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:28:24,439 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:28:24" (1/1) ... [2022-11-25 18:28:24,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:28:24" (1/1) ... [2022-11-25 18:28:24,454 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:28:24" (1/1) ... [2022-11-25 18:28:24,460 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:28:24" (1/1) ... [2022-11-25 18:28:24,471 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:28:24" (1/1) ... [2022-11-25 18:28:24,477 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:28:24" (1/1) ... [2022-11-25 18:28:24,480 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:28:24" (1/1) ... [2022-11-25 18:28:24,482 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:28:24" (1/1) ... [2022-11-25 18:28:24,487 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:28:24,488 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:28:24,488 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:28:24,488 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:28:24,489 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:28:24" (1/1) ... [2022-11-25 18:28:24,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:28:24,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782b60a7-7994-41c7-affb-60306bed76b4/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:28:24,530 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782b60a7-7994-41c7-affb-60306bed76b4/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:28:24,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782b60a7-7994-41c7-affb-60306bed76b4/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:28:24,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 18:28:24,587 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 18:28:24,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 18:28:24,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-25 18:28:24,587 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 18:28:24,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 18:28:24,588 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-25 18:28:24,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 18:28:24,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:28:24,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 18:28:24,589 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-25 18:28:24,589 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-25 18:28:24,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 18:28:24,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:28:24,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:28:24,592 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 18:28:24,893 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:28:24,895 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:28:25,588 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:28:25,617 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:28:25,618 INFO L300 CfgBuilder]: Removed 23 assume(true) statements. [2022-11-25 18:28:25,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:28:25 BoogieIcfgContainer [2022-11-25 18:28:25,622 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:28:25,625 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:28:25,626 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:28:25,631 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:28:25,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:28:23" (1/3) ... [2022-11-25 18:28:25,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7890b5d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:28:25, skipping insertion in model container [2022-11-25 18:28:25,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:28:24" (2/3) ... [2022-11-25 18:28:25,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7890b5d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:28:25, skipping insertion in model container [2022-11-25 18:28:25,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:28:25" (3/3) ... [2022-11-25 18:28:25,636 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_94-alloc_region_racing.i [2022-11-25 18:28:25,645 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 18:28:25,654 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:28:25,654 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-25 18:28:25,654 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 18:28:25,761 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-25 18:28:25,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 250 places, 276 transitions, 560 flow [2022-11-25 18:28:26,025 INFO L130 PetriNetUnfolder]: 45/391 cut-off events. [2022-11-25 18:28:26,026 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 18:28:26,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 397 conditions, 391 events. 45/391 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1201 event pairs, 0 based on Foata normal form. 0/327 useless extension candidates. Maximal degree in co-relation 213. Up to 8 conditions per place. [2022-11-25 18:28:26,038 INFO L82 GeneralOperation]: Start removeDead. Operand has 250 places, 276 transitions, 560 flow [2022-11-25 18:28:26,056 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 248 places, 273 transitions, 554 flow [2022-11-25 18:28:26,061 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 18:28:26,088 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 248 places, 273 transitions, 554 flow [2022-11-25 18:28:26,098 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 248 places, 273 transitions, 554 flow [2022-11-25 18:28:26,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 248 places, 273 transitions, 554 flow [2022-11-25 18:28:26,197 INFO L130 PetriNetUnfolder]: 44/388 cut-off events. [2022-11-25 18:28:26,197 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 18:28:26,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 394 conditions, 388 events. 44/388 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1199 event pairs, 0 based on Foata normal form. 0/325 useless extension candidates. Maximal degree in co-relation 213. Up to 8 conditions per place. [2022-11-25 18:28:26,214 INFO L119 LiptonReduction]: Number of co-enabled transitions 22250 [2022-11-25 18:29:36,082 INFO L134 LiptonReduction]: Checked pairs total: 43902 [2022-11-25 18:29:36,083 INFO L136 LiptonReduction]: Total number of compositions: 245 [2022-11-25 18:29:36,101 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:29:36,108 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=PETRI_NET, 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;@231be31b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:29:36,109 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-25 18:29:36,113 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2022-11-25 18:29:36,114 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:29:36,114 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:29:36,115 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 18:29:36,115 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-25 18:29:36,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:29:36,121 INFO L85 PathProgramCache]: Analyzing trace with hash 31870185, now seen corresponding path program 1 times [2022-11-25 18:29:36,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:29:36,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348931638] [2022-11-25 18:29:36,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:29:36,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:29:36,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:29:36,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:29:36,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:29:36,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348931638] [2022-11-25 18:29:36,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348931638] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:29:36,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:29:36,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:29:36,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678809990] [2022-11-25 18:29:36,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:29:36,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:29:36,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:29:36,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:29:36,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:29:36,637 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 521 [2022-11-25 18:29:36,643 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 93 transitions, 194 flow. Second operand has 3 states, 3 states have (on average 244.33333333333334) internal successors, (733), 3 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:29:36,646 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:29:36,646 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 521 [2022-11-25 18:29:36,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:29:37,156 INFO L130 PetriNetUnfolder]: 719/1530 cut-off events. [2022-11-25 18:29:37,156 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 18:29:37,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2910 conditions, 1530 events. 719/1530 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 8485 event pairs, 513 based on Foata normal form. 232/1434 useless extension candidates. Maximal degree in co-relation 2882. Up to 1344 conditions per place. [2022-11-25 18:29:37,168 INFO L137 encePairwiseOnDemand]: 494/521 looper letters, 79 selfloop transitions, 2 changer transitions 0/93 dead transitions. [2022-11-25 18:29:37,169 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 93 transitions, 356 flow [2022-11-25 18:29:37,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:29:37,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:29:37,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 845 transitions. [2022-11-25 18:29:37,194 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5406269993602048 [2022-11-25 18:29:37,195 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 845 transitions. [2022-11-25 18:29:37,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 845 transitions. [2022-11-25 18:29:37,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:29:37,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 845 transitions. [2022-11-25 18:29:37,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 281.6666666666667) internal successors, (845), 3 states have internal predecessors, (845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:29:37,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 521.0) internal successors, (2084), 4 states have internal predecessors, (2084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:29:37,227 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 521.0) internal successors, (2084), 4 states have internal predecessors, (2084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:29:37,230 INFO L175 Difference]: Start difference. First operand has 72 places, 93 transitions, 194 flow. Second operand 3 states and 845 transitions. [2022-11-25 18:29:37,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 93 transitions, 356 flow [2022-11-25 18:29:37,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 93 transitions, 356 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 18:29:37,240 INFO L231 Difference]: Finished difference. Result has 72 places, 69 transitions, 154 flow [2022-11-25 18:29:37,243 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=521, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=72, PETRI_TRANSITIONS=69} [2022-11-25 18:29:37,247 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 0 predicate places. [2022-11-25 18:29:37,247 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 69 transitions, 154 flow [2022-11-25 18:29:37,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 244.33333333333334) internal successors, (733), 3 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:29:37,248 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:29:37,249 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-11-25 18:29:37,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 18:29:37,250 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-25 18:29:37,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:29:37,260 INFO L85 PathProgramCache]: Analyzing trace with hash 562546635, now seen corresponding path program 1 times [2022-11-25 18:29:37,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:29:37,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623795407] [2022-11-25 18:29:37,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:29:37,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:29:37,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:29:37,346 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 18:29:37,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:29:37,413 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 18:29:37,414 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 18:29:37,416 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-11-25 18:29:37,418 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-11-25 18:29:37,419 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-11-25 18:29:37,419 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-11-25 18:29:37,419 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-11-25 18:29:37,419 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-11-25 18:29:37,420 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-11-25 18:29:37,420 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-11-25 18:29:37,420 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2022-11-25 18:29:37,421 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2022-11-25 18:29:37,421 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2022-11-25 18:29:37,421 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-11-25 18:29:37,421 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-11-25 18:29:37,422 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-11-25 18:29:37,422 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-11-25 18:29:37,422 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-11-25 18:29:37,423 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-11-25 18:29:37,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 18:29:37,423 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-25 18:29:37,426 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 18:29:37,427 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-25 18:29:37,472 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-25 18:29:37,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 330 places, 367 transitions, 752 flow [2022-11-25 18:29:37,611 INFO L130 PetriNetUnfolder]: 76/634 cut-off events. [2022-11-25 18:29:37,611 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-25 18:29:37,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 648 conditions, 634 events. 76/634 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2591 event pairs, 0 based on Foata normal form. 0/524 useless extension candidates. Maximal degree in co-relation 393. Up to 12 conditions per place. [2022-11-25 18:29:37,622 INFO L82 GeneralOperation]: Start removeDead. Operand has 330 places, 367 transitions, 752 flow [2022-11-25 18:29:37,629 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 330 places, 367 transitions, 752 flow [2022-11-25 18:29:37,630 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 18:29:37,630 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 330 places, 367 transitions, 752 flow [2022-11-25 18:29:37,631 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 330 places, 367 transitions, 752 flow [2022-11-25 18:29:37,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 330 places, 367 transitions, 752 flow [2022-11-25 18:29:37,793 INFO L130 PetriNetUnfolder]: 76/634 cut-off events. [2022-11-25 18:29:37,793 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-25 18:29:37,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 648 conditions, 634 events. 76/634 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2591 event pairs, 0 based on Foata normal form. 0/524 useless extension candidates. Maximal degree in co-relation 393. Up to 12 conditions per place. [2022-11-25 18:29:37,837 INFO L119 LiptonReduction]: Number of co-enabled transitions 63724 [2022-11-25 18:31:31,701 INFO L134 LiptonReduction]: Checked pairs total: 134412 [2022-11-25 18:31:31,701 INFO L136 LiptonReduction]: Total number of compositions: 314 [2022-11-25 18:31:31,704 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:31:31,706 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=PETRI_NET, 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;@231be31b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:31:31,706 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-25 18:31:31,711 INFO L130 PetriNetUnfolder]: 0/8 cut-off events. [2022-11-25 18:31:31,711 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:31:31,711 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:31:31,712 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 18:31:31,712 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-25 18:31:31,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:31:31,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1723870177, now seen corresponding path program 1 times [2022-11-25 18:31:31,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:31:31,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543140278] [2022-11-25 18:31:31,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:31:31,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:31:31,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:31:31,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:31:31,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:31:31,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543140278] [2022-11-25 18:31:31,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543140278] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:31:31,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:31:31,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:31:31,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609696881] [2022-11-25 18:31:31,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:31:31,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:31:31,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:31:31,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:31:31,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:31:31,848 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 320 out of 681 [2022-11-25 18:31:31,850 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 139 transitions, 296 flow. Second operand has 3 states, 3 states have (on average 321.3333333333333) internal successors, (964), 3 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:31:31,850 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:31:31,851 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 320 of 681 [2022-11-25 18:31:31,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:31:41,303 INFO L130 PetriNetUnfolder]: 40688/63877 cut-off events. [2022-11-25 18:31:41,303 INFO L131 PetriNetUnfolder]: For 130/130 co-relation queries the response was YES. [2022-11-25 18:31:41,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124274 conditions, 63877 events. 40688/63877 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 1510. Compared 510263 event pairs, 18750 based on Foata normal form. 8200/57081 useless extension candidates. Maximal degree in co-relation 8429. Up to 60194 conditions per place. [2022-11-25 18:31:41,878 INFO L137 encePairwiseOnDemand]: 644/681 looper letters, 111 selfloop transitions, 2 changer transitions 0/132 dead transitions. [2022-11-25 18:31:41,879 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 132 transitions, 508 flow [2022-11-25 18:31:41,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:31:41,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:31:41,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1119 transitions. [2022-11-25 18:31:41,882 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5477239353891337 [2022-11-25 18:31:41,883 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1119 transitions. [2022-11-25 18:31:41,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1119 transitions. [2022-11-25 18:31:41,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:31:41,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1119 transitions. [2022-11-25 18:31:41,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 373.0) internal successors, (1119), 3 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:31:41,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 681.0) internal successors, (2724), 4 states have internal predecessors, (2724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:31:41,892 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 681.0) internal successors, (2724), 4 states have internal predecessors, (2724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:31:41,893 INFO L175 Difference]: Start difference. First operand has 106 places, 139 transitions, 296 flow. Second operand 3 states and 1119 transitions. [2022-11-25 18:31:41,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 132 transitions, 508 flow [2022-11-25 18:31:41,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 132 transitions, 508 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 18:31:41,901 INFO L231 Difference]: Finished difference. Result has 109 places, 108 transitions, 248 flow [2022-11-25 18:31:41,902 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=681, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=109, PETRI_TRANSITIONS=108} [2022-11-25 18:31:41,902 INFO L288 CegarLoopForPetriNet]: 106 programPoint places, 3 predicate places. [2022-11-25 18:31:41,903 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 108 transitions, 248 flow [2022-11-25 18:31:41,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 321.3333333333333) internal successors, (964), 3 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:31:41,904 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:31:41,904 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-25 18:31:41,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 18:31:41,904 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-25 18:31:41,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:31:41,905 INFO L85 PathProgramCache]: Analyzing trace with hash 2056649573, now seen corresponding path program 1 times [2022-11-25 18:31:41,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:31:41,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961535848] [2022-11-25 18:31:41,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:31:41,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:31:41,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:31:42,017 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:31:42,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:31:42,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961535848] [2022-11-25 18:31:42,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961535848] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:31:42,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:31:42,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:31:42,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189224940] [2022-11-25 18:31:42,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:31:42,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:31:42,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:31:42,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:31:42,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:31:42,034 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 320 out of 681 [2022-11-25 18:31:42,036 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 108 transitions, 248 flow. Second operand has 3 states, 3 states have (on average 322.3333333333333) internal successors, (967), 3 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:31:42,036 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:31:42,036 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 320 of 681 [2022-11-25 18:31:42,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:31:48,860 INFO L130 PetriNetUnfolder]: 40073/62218 cut-off events. [2022-11-25 18:31:48,861 INFO L131 PetriNetUnfolder]: For 1451/1451 co-relation queries the response was YES. [2022-11-25 18:31:48,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122700 conditions, 62218 events. 40073/62218 cut-off events. For 1451/1451 co-relation queries the response was YES. Maximal size of possible extension queue 1472. Compared 479271 event pairs, 37424 based on Foata normal form. 0/48652 useless extension candidates. Maximal degree in co-relation 122536. Up to 58397 conditions per place. [2022-11-25 18:31:49,191 INFO L137 encePairwiseOnDemand]: 679/681 looper letters, 87 selfloop transitions, 1 changer transitions 0/107 dead transitions. [2022-11-25 18:31:49,191 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 107 transitions, 420 flow [2022-11-25 18:31:49,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:31:49,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:31:49,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1048 transitions. [2022-11-25 18:31:49,195 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5129711209006363 [2022-11-25 18:31:49,196 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1048 transitions. [2022-11-25 18:31:49,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1048 transitions. [2022-11-25 18:31:49,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:31:49,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1048 transitions. [2022-11-25 18:31:49,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 349.3333333333333) internal successors, (1048), 3 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:31:49,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 681.0) internal successors, (2724), 4 states have internal predecessors, (2724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:31:49,206 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 681.0) internal successors, (2724), 4 states have internal predecessors, (2724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:31:49,207 INFO L175 Difference]: Start difference. First operand has 109 places, 108 transitions, 248 flow. Second operand 3 states and 1048 transitions. [2022-11-25 18:31:49,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 107 transitions, 420 flow [2022-11-25 18:31:49,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 107 transitions, 418 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:31:49,213 INFO L231 Difference]: Finished difference. Result has 109 places, 107 transitions, 244 flow [2022-11-25 18:31:49,213 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=681, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=109, PETRI_TRANSITIONS=107} [2022-11-25 18:31:49,214 INFO L288 CegarLoopForPetriNet]: 106 programPoint places, 3 predicate places. [2022-11-25 18:31:49,215 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 107 transitions, 244 flow [2022-11-25 18:31:49,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 322.3333333333333) internal successors, (967), 3 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:31:49,216 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:31:49,216 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-25 18:31:49,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 18:31:49,217 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-25 18:31:49,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:31:49,217 INFO L85 PathProgramCache]: Analyzing trace with hash 2056649689, now seen corresponding path program 1 times [2022-11-25 18:31:49,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:31:49,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684818944] [2022-11-25 18:31:49,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:31:49,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:31:49,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:31:49,317 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 18:31:49,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:31:49,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684818944] [2022-11-25 18:31:49,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684818944] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:31:49,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:31:49,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:31:49,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377796575] [2022-11-25 18:31:49,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:31:49,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:31:49,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:31:49,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:31:49,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:31:49,337 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 681 [2022-11-25 18:31:49,339 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 107 transitions, 244 flow. Second operand has 3 states, 3 states have (on average 321.3333333333333) internal successors, (964), 3 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:31:49,340 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:31:49,340 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 681 [2022-11-25 18:31:49,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:31:55,534 INFO L130 PetriNetUnfolder]: 37637/60733 cut-off events. [2022-11-25 18:31:55,535 INFO L131 PetriNetUnfolder]: For 774/774 co-relation queries the response was YES. [2022-11-25 18:31:55,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118746 conditions, 60733 events. 37637/60733 cut-off events. For 774/774 co-relation queries the response was YES. Maximal size of possible extension queue 1396. Compared 507913 event pairs, 1819 based on Foata normal form. 0/48361 useless extension candidates. Maximal degree in co-relation 118736. Up to 53459 conditions per place. [2022-11-25 18:31:55,889 INFO L137 encePairwiseOnDemand]: 677/681 looper letters, 132 selfloop transitions, 4 changer transitions 0/155 dead transitions. [2022-11-25 18:31:55,889 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 155 transitions, 610 flow [2022-11-25 18:31:55,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:31:55,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:31:55,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1093 transitions. [2022-11-25 18:31:55,900 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.534997552618698 [2022-11-25 18:31:55,900 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1093 transitions. [2022-11-25 18:31:55,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1093 transitions. [2022-11-25 18:31:55,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:31:55,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1093 transitions. [2022-11-25 18:31:55,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 364.3333333333333) internal successors, (1093), 3 states have internal predecessors, (1093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:31:55,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 681.0) internal successors, (2724), 4 states have internal predecessors, (2724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:31:55,916 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 681.0) internal successors, (2724), 4 states have internal predecessors, (2724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:31:55,916 INFO L175 Difference]: Start difference. First operand has 109 places, 107 transitions, 244 flow. Second operand 3 states and 1093 transitions. [2022-11-25 18:31:55,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 155 transitions, 610 flow [2022-11-25 18:31:55,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 155 transitions, 609 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:31:55,924 INFO L231 Difference]: Finished difference. Result has 110 places, 107 transitions, 255 flow [2022-11-25 18:31:55,925 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=681, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=255, PETRI_PLACES=110, PETRI_TRANSITIONS=107} [2022-11-25 18:31:55,927 INFO L288 CegarLoopForPetriNet]: 106 programPoint places, 4 predicate places. [2022-11-25 18:31:55,927 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 107 transitions, 255 flow [2022-11-25 18:31:55,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 321.3333333333333) internal successors, (964), 3 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:31:55,928 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:31:55,929 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-25 18:31:55,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 18:31:55,930 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-25 18:31:55,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:31:55,931 INFO L85 PathProgramCache]: Analyzing trace with hash 755449348, now seen corresponding path program 1 times [2022-11-25 18:31:55,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:31:55,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27870558] [2022-11-25 18:31:55,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:31:55,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:31:55,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:31:55,977 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 18:31:56,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:31:56,034 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 18:31:56,037 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 18:31:56,037 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-11-25 18:31:56,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2022-11-25 18:31:56,038 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2022-11-25 18:31:56,038 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2022-11-25 18:31:56,038 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2022-11-25 18:31:56,039 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2022-11-25 18:31:56,039 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2022-11-25 18:31:56,039 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2022-11-25 18:31:56,041 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2022-11-25 18:31:56,041 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2022-11-25 18:31:56,041 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2022-11-25 18:31:56,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2022-11-25 18:31:56,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2022-11-25 18:31:56,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2022-11-25 18:31:56,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2022-11-25 18:31:56,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2022-11-25 18:31:56,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2022-11-25 18:31:56,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2022-11-25 18:31:56,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2022-11-25 18:31:56,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2022-11-25 18:31:56,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2022-11-25 18:31:56,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 18:31:56,047 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-25 18:31:56,048 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 18:31:56,048 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-25 18:31:56,119 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-25 18:31:56,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 410 places, 458 transitions, 946 flow [2022-11-25 18:31:56,539 INFO L130 PetriNetUnfolder]: 112/918 cut-off events. [2022-11-25 18:31:56,539 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-25 18:31:56,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 946 conditions, 918 events. 112/918 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4225 event pairs, 1 based on Foata normal form. 0/754 useless extension candidates. Maximal degree in co-relation 642. Up to 16 conditions per place. [2022-11-25 18:31:56,550 INFO L82 GeneralOperation]: Start removeDead. Operand has 410 places, 458 transitions, 946 flow [2022-11-25 18:31:56,564 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 410 places, 458 transitions, 946 flow [2022-11-25 18:31:56,564 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 18:31:56,564 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 410 places, 458 transitions, 946 flow [2022-11-25 18:31:56,566 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 410 places, 458 transitions, 946 flow [2022-11-25 18:31:56,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 410 places, 458 transitions, 946 flow [2022-11-25 18:31:56,790 INFO L130 PetriNetUnfolder]: 112/918 cut-off events. [2022-11-25 18:31:56,790 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-25 18:31:56,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 946 conditions, 918 events. 112/918 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4225 event pairs, 1 based on Foata normal form. 0/754 useless extension candidates. Maximal degree in co-relation 642. Up to 16 conditions per place. [2022-11-25 18:31:56,869 INFO L119 LiptonReduction]: Number of co-enabled transitions 120150 [2022-11-25 18:35:18,574 INFO L134 LiptonReduction]: Checked pairs total: 262364 [2022-11-25 18:35:18,575 INFO L136 LiptonReduction]: Total number of compositions: 382 [2022-11-25 18:35:18,577 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:35:18,578 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=PETRI_NET, 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;@231be31b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:35:18,579 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-11-25 18:35:18,583 INFO L130 PetriNetUnfolder]: 0/8 cut-off events. [2022-11-25 18:35:18,583 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:35:18,583 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:35:18,583 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 18:35:18,584 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-25 18:35:18,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:35:18,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1682770965, now seen corresponding path program 1 times [2022-11-25 18:35:18,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:35:18,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288676994] [2022-11-25 18:35:18,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:35:18,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:35:18,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:35:18,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:35:18,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:35:18,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288676994] [2022-11-25 18:35:18,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288676994] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:35:18,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:35:18,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:35:18,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011504454] [2022-11-25 18:35:18,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:35:18,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:35:18,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:35:18,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:35:18,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:35:18,690 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 397 out of 840 [2022-11-25 18:35:18,692 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 184 transitions, 398 flow. Second operand has 3 states, 3 states have (on average 398.3333333333333) internal successors, (1195), 3 states have internal predecessors, (1195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:18,692 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:35:18,692 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 397 of 840 [2022-11-25 18:35:18,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand