./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_09-ptrmunge_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 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_c136f037-3953-4bf4-b484-dc573e802d2d/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c136f037-3953-4bf4-b484-dc573e802d2d/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c136f037-3953-4bf4-b484-dc573e802d2d/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c136f037-3953-4bf4-b484-dc573e802d2d/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_09-ptrmunge_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c136f037-3953-4bf4-b484-dc573e802d2d/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c136f037-3953-4bf4-b484-dc573e802d2d/bin/uautomizer-vX5HgA9Q3a --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 7b88fee59ad03447f68c116aa52c40e006cc633d8116aa4d446048afd18fa64f --- 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-b5237d8 [2022-11-21 13:54:06,015 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 13:54:06,017 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 13:54:06,057 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 13:54:06,058 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 13:54:06,061 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 13:54:06,064 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 13:54:06,066 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 13:54:06,068 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 13:54:06,073 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 13:54:06,075 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 13:54:06,077 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 13:54:06,078 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 13:54:06,080 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 13:54:06,081 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 13:54:06,083 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 13:54:06,085 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 13:54:06,086 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 13:54:06,087 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 13:54:06,093 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 13:54:06,095 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 13:54:06,097 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 13:54:06,098 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 13:54:06,099 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 13:54:06,109 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 13:54:06,110 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 13:54:06,110 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 13:54:06,112 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 13:54:06,113 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 13:54:06,114 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 13:54:06,114 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 13:54:06,115 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 13:54:06,118 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 13:54:06,119 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 13:54:06,120 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 13:54:06,121 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 13:54:06,121 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 13:54:06,122 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 13:54:06,122 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 13:54:06,123 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 13:54:06,124 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 13:54:06,124 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c136f037-3953-4bf4-b484-dc573e802d2d/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-21 13:54:06,162 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 13:54:06,163 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 13:54:06,163 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 13:54:06,163 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 13:54:06,164 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 13:54:06,164 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 13:54:06,165 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 13:54:06,165 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 13:54:06,165 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 13:54:06,166 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 13:54:06,167 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 13:54:06,167 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 13:54:06,167 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 13:54:06,167 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 13:54:06,168 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 13:54:06,168 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 13:54:06,168 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 13:54:06,168 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 13:54:06,168 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-21 13:54:06,169 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 13:54:06,169 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 13:54:06,169 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 13:54:06,169 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 13:54:06,170 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 13:54:06,170 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 13:54:06,170 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 13:54:06,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:54:06,170 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 13:54:06,171 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 13:54:06,171 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 13:54:06,171 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 13:54:06,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 13:54:06,172 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 13:54:06,172 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 13:54:06,172 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 13:54:06,172 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_c136f037-3953-4bf4-b484-dc573e802d2d/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c136f037-3953-4bf4-b484-dc573e802d2d/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7b88fee59ad03447f68c116aa52c40e006cc633d8116aa4d446048afd18fa64f [2022-11-21 13:54:06,454 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 13:54:06,479 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 13:54:06,482 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 13:54:06,483 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 13:54:06,483 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 13:54:06,484 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c136f037-3953-4bf4-b484-dc573e802d2d/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/goblint-regression/28-race_reach_09-ptrmunge_racing.i [2022-11-21 13:54:09,516 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 13:54:09,764 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 13:54:09,765 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c136f037-3953-4bf4-b484-dc573e802d2d/sv-benchmarks/c/goblint-regression/28-race_reach_09-ptrmunge_racing.i [2022-11-21 13:54:09,785 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c136f037-3953-4bf4-b484-dc573e802d2d/bin/uautomizer-vX5HgA9Q3a/data/696deb8ec/c6b645158a764ed3966c9e92b8993886/FLAGbec06d5a3 [2022-11-21 13:54:09,799 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c136f037-3953-4bf4-b484-dc573e802d2d/bin/uautomizer-vX5HgA9Q3a/data/696deb8ec/c6b645158a764ed3966c9e92b8993886 [2022-11-21 13:54:09,801 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 13:54:09,803 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 13:54:09,804 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 13:54:09,804 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 13:54:09,808 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 13:54:09,808 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:54:09" (1/1) ... [2022-11-21 13:54:09,809 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65b91264 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:54:09, skipping insertion in model container [2022-11-21 13:54:09,810 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:54:09" (1/1) ... [2022-11-21 13:54:09,817 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 13:54:09,858 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 13:54:10,197 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_c136f037-3953-4bf4-b484-dc573e802d2d/sv-benchmarks/c/goblint-regression/28-race_reach_09-ptrmunge_racing.i[30176,30189] [2022-11-21 13:54:10,240 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:54:10,257 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 13:54:10,305 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_c136f037-3953-4bf4-b484-dc573e802d2d/sv-benchmarks/c/goblint-regression/28-race_reach_09-ptrmunge_racing.i[30176,30189] [2022-11-21 13:54:10,339 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:54:10,372 INFO L208 MainTranslator]: Completed translation [2022-11-21 13:54:10,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:54:10 WrapperNode [2022-11-21 13:54:10,373 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 13:54:10,374 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 13:54:10,374 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 13:54:10,374 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 13:54:10,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:54:10" (1/1) ... [2022-11-21 13:54:10,394 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:54:10" (1/1) ... [2022-11-21 13:54:10,421 INFO L138 Inliner]: procedures = 172, calls = 50, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 232 [2022-11-21 13:54:10,421 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 13:54:10,422 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 13:54:10,422 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 13:54:10,422 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 13:54:10,431 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:54:10" (1/1) ... [2022-11-21 13:54:10,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:54:10" (1/1) ... [2022-11-21 13:54:10,435 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:54:10" (1/1) ... [2022-11-21 13:54:10,435 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:54:10" (1/1) ... [2022-11-21 13:54:10,442 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:54:10" (1/1) ... [2022-11-21 13:54:10,447 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:54:10" (1/1) ... [2022-11-21 13:54:10,449 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:54:10" (1/1) ... [2022-11-21 13:54:10,450 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:54:10" (1/1) ... [2022-11-21 13:54:10,453 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 13:54:10,454 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 13:54:10,454 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 13:54:10,454 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 13:54:10,455 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:54:10" (1/1) ... [2022-11-21 13:54:10,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:54:10,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c136f037-3953-4bf4-b484-dc573e802d2d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:54:10,489 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c136f037-3953-4bf4-b484-dc573e802d2d/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 13:54:10,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c136f037-3953-4bf4-b484-dc573e802d2d/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 13:54:10,525 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 13:54:10,525 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-11-21 13:54:10,525 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-11-21 13:54:10,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 13:54:10,525 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-21 13:54:10,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 13:54:10,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 13:54:10,526 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-11-21 13:54:10,526 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-11-21 13:54:10,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 13:54:10,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 13:54:10,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 13:54:10,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 13:54:10,528 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 13:54:10,665 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 13:54:10,667 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 13:54:11,179 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 13:54:11,189 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 13:54:11,189 INFO L300 CfgBuilder]: Removed 24 assume(true) statements. [2022-11-21 13:54:11,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:54:11 BoogieIcfgContainer [2022-11-21 13:54:11,192 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 13:54:11,195 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 13:54:11,195 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 13:54:11,198 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 13:54:11,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:54:09" (1/3) ... [2022-11-21 13:54:11,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55829cd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:54:11, skipping insertion in model container [2022-11-21 13:54:11,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:54:10" (2/3) ... [2022-11-21 13:54:11,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55829cd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:54:11, skipping insertion in model container [2022-11-21 13:54:11,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:54:11" (3/3) ... [2022-11-21 13:54:11,201 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_09-ptrmunge_racing.i [2022-11-21 13:54:11,210 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 13:54:11,220 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 13:54:11,221 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-11-21 13:54:11,221 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 13:54:11,312 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-21 13:54:11,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 228 places, 255 transitions, 532 flow [2022-11-21 13:54:11,519 INFO L130 PetriNetUnfolder]: 58/453 cut-off events. [2022-11-21 13:54:11,519 INFO L131 PetriNetUnfolder]: For 8/12 co-relation queries the response was YES. [2022-11-21 13:54:11,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 453 events. 58/453 cut-off events. For 8/12 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2026 event pairs, 0 based on Foata normal form. 0/359 useless extension candidates. Maximal degree in co-relation 241. Up to 8 conditions per place. [2022-11-21 13:54:11,533 INFO L82 GeneralOperation]: Start removeDead. Operand has 228 places, 255 transitions, 532 flow [2022-11-21 13:54:11,549 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 228 places, 255 transitions, 532 flow [2022-11-21 13:54:11,572 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 13:54:11,577 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;@eca77c5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 13:54:11,577 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2022-11-21 13:54:11,590 INFO L130 PetriNetUnfolder]: 4/71 cut-off events. [2022-11-21 13:54:11,590 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 13:54:11,591 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:54:11,591 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:54:11,592 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-21 13:54:11,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:54:11,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1584074424, now seen corresponding path program 1 times [2022-11-21 13:54:11,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:54:11,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746897782] [2022-11-21 13:54:11,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:54:11,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:54:11,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:12,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:54:12,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:54:12,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746897782] [2022-11-21 13:54:12,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746897782] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:54:12,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:54:12,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:54:12,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605854769] [2022-11-21 13:54:12,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:54:12,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 13:54:12,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:54:12,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 13:54:12,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 13:54:12,212 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 255 [2022-11-21 13:54:12,223 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 255 transitions, 532 flow. Second operand has 4 states, 4 states have (on average 210.75) internal successors, (843), 4 states have internal predecessors, (843), 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) [2022-11-21 13:54:12,226 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:54:12,226 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 255 [2022-11-21 13:54:12,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:54:12,390 INFO L130 PetriNetUnfolder]: 8/316 cut-off events. [2022-11-21 13:54:12,390 INFO L131 PetriNetUnfolder]: For 37/88 co-relation queries the response was YES. [2022-11-21 13:54:12,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 356 conditions, 316 events. 8/316 cut-off events. For 37/88 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1071 event pairs, 0 based on Foata normal form. 120/397 useless extension candidates. Maximal degree in co-relation 219. Up to 15 conditions per place. [2022-11-21 13:54:12,397 INFO L137 encePairwiseOnDemand]: 222/255 looper letters, 14 selfloop transitions, 4 changer transitions 0/227 dead transitions. [2022-11-21 13:54:12,397 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 227 transitions, 512 flow [2022-11-21 13:54:12,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:54:12,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 13:54:12,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1126 transitions. [2022-11-21 13:54:12,422 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8831372549019608 [2022-11-21 13:54:12,423 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1126 transitions. [2022-11-21 13:54:12,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1126 transitions. [2022-11-21 13:54:12,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:54:12,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1126 transitions. [2022-11-21 13:54:12,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 225.2) internal successors, (1126), 5 states have internal predecessors, (1126), 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) [2022-11-21 13:54:12,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 255.0) internal successors, (1530), 6 states have internal predecessors, (1530), 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) [2022-11-21 13:54:12,445 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 255.0) internal successors, (1530), 6 states have internal predecessors, (1530), 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) [2022-11-21 13:54:12,447 INFO L175 Difference]: Start difference. First operand has 228 places, 255 transitions, 532 flow. Second operand 5 states and 1126 transitions. [2022-11-21 13:54:12,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 227 transitions, 512 flow [2022-11-21 13:54:12,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 227 transitions, 512 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 13:54:12,456 INFO L231 Difference]: Finished difference. Result has 229 places, 225 transitions, 484 flow [2022-11-21 13:54:12,459 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=484, PETRI_PLACES=229, PETRI_TRANSITIONS=225} [2022-11-21 13:54:12,462 INFO L288 CegarLoopForPetriNet]: 228 programPoint places, 1 predicate places. [2022-11-21 13:54:12,463 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 225 transitions, 484 flow [2022-11-21 13:54:12,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 210.75) internal successors, (843), 4 states have internal predecessors, (843), 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) [2022-11-21 13:54:12,464 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:54:12,464 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:54:12,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 13:54:12,465 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-21 13:54:12,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:54:12,466 INFO L85 PathProgramCache]: Analyzing trace with hash -193541305, now seen corresponding path program 1 times [2022-11-21 13:54:12,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:54:12,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293940241] [2022-11-21 13:54:12,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:54:12,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:54:12,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:54:12,494 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 13:54:12,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:54:12,551 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 13:54:12,552 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-21 13:54:12,554 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 26 remaining) [2022-11-21 13:54:12,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 26 remaining) [2022-11-21 13:54:12,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 26 remaining) [2022-11-21 13:54:12,560 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 26 remaining) [2022-11-21 13:54:12,560 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 26 remaining) [2022-11-21 13:54:12,561 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 26 remaining) [2022-11-21 13:54:12,561 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 26 remaining) [2022-11-21 13:54:12,561 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 26 remaining) [2022-11-21 13:54:12,562 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 26 remaining) [2022-11-21 13:54:12,563 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 26 remaining) [2022-11-21 13:54:12,564 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 26 remaining) [2022-11-21 13:54:12,568 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 26 remaining) [2022-11-21 13:54:12,569 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 26 remaining) [2022-11-21 13:54:12,569 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 26 remaining) [2022-11-21 13:54:12,570 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 26 remaining) [2022-11-21 13:54:12,570 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 26 remaining) [2022-11-21 13:54:12,571 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 26 remaining) [2022-11-21 13:54:12,571 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 26 remaining) [2022-11-21 13:54:12,571 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 26 remaining) [2022-11-21 13:54:12,571 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 26 remaining) [2022-11-21 13:54:12,572 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 26 remaining) [2022-11-21 13:54:12,572 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 26 remaining) [2022-11-21 13:54:12,572 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 26 remaining) [2022-11-21 13:54:12,573 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 26 remaining) [2022-11-21 13:54:12,573 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 26 remaining) [2022-11-21 13:54:12,578 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 26 remaining) [2022-11-21 13:54:12,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 13:54:12,579 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-21 13:54:12,583 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-21 13:54:12,583 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-21 13:54:12,700 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-11-21 13:54:12,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 352 places, 403 transitions, 854 flow [2022-11-21 13:54:13,148 INFO L130 PetriNetUnfolder]: 197/1354 cut-off events. [2022-11-21 13:54:13,148 INFO L131 PetriNetUnfolder]: For 72/78 co-relation queries the response was YES. [2022-11-21 13:54:13,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1451 conditions, 1354 events. 197/1354 cut-off events. For 72/78 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 8646 event pairs, 1 based on Foata normal form. 0/1062 useless extension candidates. Maximal degree in co-relation 820. Up to 32 conditions per place. [2022-11-21 13:54:13,175 INFO L82 GeneralOperation]: Start removeDead. Operand has 352 places, 403 transitions, 854 flow [2022-11-21 13:54:13,199 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 352 places, 403 transitions, 854 flow [2022-11-21 13:54:13,201 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 13:54:13,202 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;@eca77c5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 13:54:13,202 INFO L358 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2022-11-21 13:54:13,211 INFO L130 PetriNetUnfolder]: 4/71 cut-off events. [2022-11-21 13:54:13,211 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 13:54:13,211 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:54:13,212 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:54:13,212 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2022-11-21 13:54:13,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:54:13,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1307583831, now seen corresponding path program 1 times [2022-11-21 13:54:13,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:54:13,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108443645] [2022-11-21 13:54:13,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:54:13,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:54:13,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:13,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:54:13,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:54:13,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108443645] [2022-11-21 13:54:13,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108443645] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:54:13,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:54:13,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:54:13,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948408575] [2022-11-21 13:54:13,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:54:13,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 13:54:13,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:54:13,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 13:54:13,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 13:54:13,360 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 327 out of 403 [2022-11-21 13:54:13,364 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 403 transitions, 854 flow. Second operand has 4 states, 4 states have (on average 328.75) internal successors, (1315), 4 states have internal predecessors, (1315), 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) [2022-11-21 13:54:13,364 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:54:13,364 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 327 of 403 [2022-11-21 13:54:13,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:54:13,837 INFO L130 PetriNetUnfolder]: 60/1052 cut-off events. [2022-11-21 13:54:13,838 INFO L131 PetriNetUnfolder]: For 270/592 co-relation queries the response was YES. [2022-11-21 13:54:13,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1235 conditions, 1052 events. 60/1052 cut-off events. For 270/592 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 6576 event pairs, 2 based on Foata normal form. 861/1757 useless extension candidates. Maximal degree in co-relation 751. Up to 85 conditions per place. [2022-11-21 13:54:13,869 INFO L137 encePairwiseOnDemand]: 348/403 looper letters, 27 selfloop transitions, 4 changer transitions 0/358 dead transitions. [2022-11-21 13:54:13,869 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 358 transitions, 826 flow [2022-11-21 13:54:13,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:54:13,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 13:54:13,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1751 transitions. [2022-11-21 13:54:13,873 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8689826302729529 [2022-11-21 13:54:13,873 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1751 transitions. [2022-11-21 13:54:13,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1751 transitions. [2022-11-21 13:54:13,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:54:13,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1751 transitions. [2022-11-21 13:54:13,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 350.2) internal successors, (1751), 5 states have internal predecessors, (1751), 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) [2022-11-21 13:54:13,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 403.0) internal successors, (2418), 6 states have internal predecessors, (2418), 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) [2022-11-21 13:54:13,884 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 403.0) internal successors, (2418), 6 states have internal predecessors, (2418), 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) [2022-11-21 13:54:13,884 INFO L175 Difference]: Start difference. First operand has 352 places, 403 transitions, 854 flow. Second operand 5 states and 1751 transitions. [2022-11-21 13:54:13,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 358 transitions, 826 flow [2022-11-21 13:54:13,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 358 transitions, 826 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 13:54:13,892 INFO L231 Difference]: Finished difference. Result has 355 places, 354 transitions, 782 flow [2022-11-21 13:54:13,893 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=782, PETRI_PLACES=355, PETRI_TRANSITIONS=354} [2022-11-21 13:54:13,894 INFO L288 CegarLoopForPetriNet]: 352 programPoint places, 3 predicate places. [2022-11-21 13:54:13,894 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 354 transitions, 782 flow [2022-11-21 13:54:13,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 328.75) internal successors, (1315), 4 states have internal predecessors, (1315), 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) [2022-11-21 13:54:13,895 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:54:13,896 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:54:13,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 13:54:13,896 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2022-11-21 13:54:13,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:54:13,897 INFO L85 PathProgramCache]: Analyzing trace with hash 449041860, now seen corresponding path program 1 times [2022-11-21 13:54:13,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:54:13,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611960621] [2022-11-21 13:54:13,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:54:13,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:54:13,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:13,972 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 13:54:13,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:54:13,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611960621] [2022-11-21 13:54:13,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611960621] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:54:13,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:54:13,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:54:13,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498660763] [2022-11-21 13:54:13,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:54:13,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 13:54:13,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:54:13,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 13:54:13,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 13:54:13,977 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 327 out of 403 [2022-11-21 13:54:13,979 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 354 transitions, 782 flow. Second operand has 4 states, 4 states have (on average 330.75) internal successors, (1323), 4 states have internal predecessors, (1323), 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) [2022-11-21 13:54:13,979 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:54:13,979 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 327 of 403 [2022-11-21 13:54:13,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:54:14,441 INFO L130 PetriNetUnfolder]: 60/1051 cut-off events. [2022-11-21 13:54:14,441 INFO L131 PetriNetUnfolder]: For 275/582 co-relation queries the response was YES. [2022-11-21 13:54:14,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1250 conditions, 1051 events. 60/1051 cut-off events. For 275/582 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 6614 event pairs, 2 based on Foata normal form. 13/912 useless extension candidates. Maximal degree in co-relation 1170. Up to 74 conditions per place. [2022-11-21 13:54:14,478 INFO L137 encePairwiseOnDemand]: 397/403 looper letters, 19 selfloop transitions, 8 changer transitions 0/354 dead transitions. [2022-11-21 13:54:14,479 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 354 transitions, 834 flow [2022-11-21 13:54:14,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:54:14,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 13:54:14,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1660 transitions. [2022-11-21 13:54:14,488 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8238213399503722 [2022-11-21 13:54:14,488 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1660 transitions. [2022-11-21 13:54:14,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1660 transitions. [2022-11-21 13:54:14,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:54:14,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1660 transitions. [2022-11-21 13:54:14,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 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) [2022-11-21 13:54:14,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 403.0) internal successors, (2418), 6 states have internal predecessors, (2418), 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) [2022-11-21 13:54:14,500 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 403.0) internal successors, (2418), 6 states have internal predecessors, (2418), 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) [2022-11-21 13:54:14,501 INFO L175 Difference]: Start difference. First operand has 355 places, 354 transitions, 782 flow. Second operand 5 states and 1660 transitions. [2022-11-21 13:54:14,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 354 transitions, 834 flow [2022-11-21 13:54:14,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 354 transitions, 832 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 13:54:14,514 INFO L231 Difference]: Finished difference. Result has 358 places, 354 transitions, 800 flow [2022-11-21 13:54:14,515 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=800, PETRI_PLACES=358, PETRI_TRANSITIONS=354} [2022-11-21 13:54:14,518 INFO L288 CegarLoopForPetriNet]: 352 programPoint places, 6 predicate places. [2022-11-21 13:54:14,518 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 354 transitions, 800 flow [2022-11-21 13:54:14,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 330.75) internal successors, (1323), 4 states have internal predecessors, (1323), 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) [2022-11-21 13:54:14,519 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:54:14,519 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:54:14,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 13:54:14,520 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2022-11-21 13:54:14,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:54:14,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1035396663, now seen corresponding path program 1 times [2022-11-21 13:54:14,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:54:14,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275293423] [2022-11-21 13:54:14,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:54:14,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:54:14,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:14,704 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:54:14,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:54:14,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275293423] [2022-11-21 13:54:14,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275293423] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:54:14,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488606778] [2022-11-21 13:54:14,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:54:14,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:54:14,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c136f037-3953-4bf4-b484-dc573e802d2d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:54:14,712 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c136f037-3953-4bf4-b484-dc573e802d2d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:54:14,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c136f037-3953-4bf4-b484-dc573e802d2d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 13:54:14,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:14,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 13:54:14,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:54:14,967 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:54:14,967 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:54:14,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488606778] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:54:14,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:54:14,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 13:54:14,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478999315] [2022-11-21 13:54:14,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:54:14,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 13:54:14,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:54:14,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 13:54:14,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 13:54:14,973 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 327 out of 403 [2022-11-21 13:54:14,975 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 354 transitions, 800 flow. Second operand has 6 states, 6 states have (on average 329.6666666666667) internal successors, (1978), 6 states have internal predecessors, (1978), 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) [2022-11-21 13:54:14,975 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:54:14,976 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 327 of 403 [2022-11-21 13:54:14,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:54:15,397 INFO L130 PetriNetUnfolder]: 60/1050 cut-off events. [2022-11-21 13:54:15,398 INFO L131 PetriNetUnfolder]: For 281/573 co-relation queries the response was YES. [2022-11-21 13:54:15,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1259 conditions, 1050 events. 60/1050 cut-off events. For 281/573 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 6549 event pairs, 2 based on Foata normal form. 11/909 useless extension candidates. Maximal degree in co-relation 767. Up to 77 conditions per place. [2022-11-21 13:54:15,425 INFO L137 encePairwiseOnDemand]: 398/403 looper letters, 23 selfloop transitions, 6 changer transitions 0/356 dead transitions. [2022-11-21 13:54:15,425 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 356 transitions, 860 flow [2022-11-21 13:54:15,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 13:54:15,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 13:54:15,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2319 transitions. [2022-11-21 13:54:15,430 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8220489188231124 [2022-11-21 13:54:15,431 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2319 transitions. [2022-11-21 13:54:15,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2319 transitions. [2022-11-21 13:54:15,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:54:15,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2319 transitions. [2022-11-21 13:54:15,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 331.2857142857143) internal successors, (2319), 7 states have internal predecessors, (2319), 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) [2022-11-21 13:54:15,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 403.0) internal successors, (3224), 8 states have internal predecessors, (3224), 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) [2022-11-21 13:54:15,446 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 403.0) internal successors, (3224), 8 states have internal predecessors, (3224), 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) [2022-11-21 13:54:15,446 INFO L175 Difference]: Start difference. First operand has 358 places, 354 transitions, 800 flow. Second operand 7 states and 2319 transitions. [2022-11-21 13:54:15,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 356 transitions, 860 flow [2022-11-21 13:54:15,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 356 transitions, 848 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 13:54:15,455 INFO L231 Difference]: Finished difference. Result has 360 places, 353 transitions, 796 flow [2022-11-21 13:54:15,456 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=784, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=796, PETRI_PLACES=360, PETRI_TRANSITIONS=353} [2022-11-21 13:54:15,458 INFO L288 CegarLoopForPetriNet]: 352 programPoint places, 8 predicate places. [2022-11-21 13:54:15,458 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 353 transitions, 796 flow [2022-11-21 13:54:15,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 329.6666666666667) internal successors, (1978), 6 states have internal predecessors, (1978), 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) [2022-11-21 13:54:15,460 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:54:15,460 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:54:15,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c136f037-3953-4bf4-b484-dc573e802d2d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 13:54:15,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c136f037-3953-4bf4-b484-dc573e802d2d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:54:15,667 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2022-11-21 13:54:15,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:54:15,667 INFO L85 PathProgramCache]: Analyzing trace with hash -594385330, now seen corresponding path program 1 times [2022-11-21 13:54:15,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:54:15,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307432652] [2022-11-21 13:54:15,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:54:15,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:54:15,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:16,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:54:16,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:54:16,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307432652] [2022-11-21 13:54:16,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307432652] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:54:16,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:54:16,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-21 13:54:16,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441452082] [2022-11-21 13:54:16,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:54:16,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-21 13:54:16,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:54:16,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-21 13:54:16,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-11-21 13:54:16,369 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 403 [2022-11-21 13:54:16,373 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 353 transitions, 796 flow. Second operand has 13 states, 13 states have (on average 247.92307692307693) internal successors, (3223), 13 states have internal predecessors, (3223), 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) [2022-11-21 13:54:16,373 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:54:16,373 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 403 [2022-11-21 13:54:16,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand